ZTE - UMTS Radio Parameter

UMTS Radio Parameter

Contents

1 Cell and common signal channel establishment establishment parameters.................................................................. 1 2 Cell selection and parameter parameter re-selection re-selection ................................................................................................ 9 3 Random access access parameter....................................................................................................................... parameter....................................................................................................................... 21 4 UE call call establishment parameter............................................................................................................ 31 5 Paging parameter..................................................................................................................................... 39 6 Power control parameter......................................................................................................................... parameter......................................................................................................................... 45

6.1 Basic principle of internal loop power control................................................................................ 45 6.2 Basic principle principle of external loop power control ............................................................................... 58 7 Control parameter switch........................................................................................................................ 67

7.1 Basic principle of intra-frequency intra-frequency switch ....................................................................................... 67 7.2 Basic principle of inter-frequency inter-frequency switch ....................................................................................... 80 7.3 Basic principle of intersystem switch.............................................................................................. switch.............................................................................................. 90

1 Ce Cell and common com mon signal sig nal channel channel establishm stablis hme ent parame parameters ters Normal cell operation is premise for a UMTS system to guarantee normal network operation while premise of normal cell operation is successful cell and common signal channel establishment as well as broadcasting communication parameters to network side of UE through system messages. Above signaling process is shown in following figure:

Key factors to indicate a cell include configuration of frequency point, primary scrambling code, total power and common physical signal channel. In which: Common physical signal channels which shall be configured are as follows: 

Pilot channel (PCPICH): Used as reference basis of other signal channels and signal measurement.



Primary synchronous channel (PSCH): Used for time slot synchronization when searching for the cell.



Auxiliary synchronous channel (SSCH): To define frame synchronization and main scrambling code when searching for the cell.




Broadcasting channel (PCCPCH): Used to broadcast system messages.



Auxiliary common control physical channel (SCCPCH) ：Used to bear FACH or PCH transmission channel messages. Random access channel (PRACH): Used for subscriber’s random access; Relevant



parameters are introduced in random access process Chapter. Chapter. Access indicator channel (AICH): Downlinkindicator channel which is used with



PRACH channel together; AICH channel parameters are introduced in random access process Chapter. Paging indicator channel (PICH): Used for paging indication; Paging channel



parameters are introduced introduced in paging Chapter. Chapter. Central Frequency of the Carrier Frequency of the Uplink Channel (UUARFCN) 3GPP Name

UARFCN (Nupper)

3GPP Reference

TS 25.331

Field Name

Uuarfcn This parameter indicates the upper limit of the Band of a UTRAN FDD controlled by the local PLMN. When a UE returns to the idle state from the RRC connection state,

Description

the UE selects and resides in a cell. UTRAN carries this parameter in the RRC CONNECTION RELEASE message. This parameter indicates the possible transmit Band of the surrounding cell. This helps the UE to speed up cell search.

Description of data item of radio parameter message GUI Element Name

Upper limit of FDD UMTS frequency point Band 1: 10562..10838 Band 2: 9662..9938, 412, 587,

Value Range

612,

637,

487,

512,

537,

562,

687

Band 5: 4357… 4458, 1007,

1012,

Band 6: 4387 …4413, 1037,

1062

Default Value

[10838,9938]

Scope

RNC

Function

-

Configuration

462,

Band 3: 1162.. 1513

Band 8: 2937..3088

Recommended

662,

437,

-

1032,

1037,

1062,

1087

Chapter 1

Cell and common signal channel establishment parameters

Central Frequency of the Carrier Frequency of the Downlink Channel (DUARFCN) 3GPP Name

UARFCN (Nlow)

3GPP Reference

TS 25.331

Field Name

Luarfcn [8] The parameter is to instruct lower limit of a certain UTRAN FDD frequency scope under PLMN control. UE will select a cell when returning from RRC connection

Description

status to idle state. Utran has this parameter in RRC CONNECTION RELEASE message to instruct possible transmitting frequency scope around the cell so that UE can search for the cell quickly.

Description of data item

of

radio

parameter message GUI Element Name

Lower limit of FDD UMTS frequency point Band 1: 10562..10838 Band 2: 9662..9938,412, 437, 462, 487, 512, 537, 562, 587, 612, 637, 662, 687

Value Range

Band 3: 1162.. 1513 Band 5: 4357… 4458,1007, 1012, 1032, 1037, 1062, 1087 Band 6: 4387 …4413,1037, 1062 Band 8: 2937..3088

Default Value

[10562, 9662]

Scope

RNC

Function

-

Recommended Configuration

-

Cell Maximum Transmission Power 3GPP Name

Maximum Transmission Power

3GPP Reference

TS 25.433

Field Name

MAXDlTxPwr

Description

This parameter indicates the maximum transmission power allowed by all downlink physical channels of a cell.

Description of data item of radio parameter message GUI Name

Element

Cell Maximum Transmission Power


3GPP Name Value Range

Maximum Transmission Power OMCR: (0.0..50.0)dBm (0.0..50.0)dBm，step 0.1dBm RNC: D=P*10,0..500

Default Value

43dBm

Scope

UTRAN Cell

Function

The parameter value depends on the scenario defined by the cell coverage attribute. The maximum transmission power is related


to the cell coverage range and should be adjusted according to the coverage attribute of the cell. The principle of adjustment is: Typically, the pilot frequency covers 10%, and the Ec/Io at the edges of the pilot frequency should be maintained at about -12dB.

Cell Primary Scrambling Code 3GPP Name

Primary Scrambling Code TS 25.331

3GPP Reference

TS 25.423 TS25.433

Field Name

PrimScraCode Cell primary scrambling codes distinguish between cells. The

Description

UTRAN system has a total of 512 available primary scrambling codes.


Cell Primary Scrambling Code

Value Range

0..511-

Default Value

-

Scope

UTRAN Cell

Function

Since there are a total of 512 available primary scrambling codes, these codes follow spatial multiplexing. Basically, the


principle is to ensure that the primary scrambling codes are different between neighboring cells, and the space between the cells with the same primary scrambling code should be as large as possible. Typically, you should plan the primary scrambling codes during network planning.

P-CPICH Power

Chapter 1

3GPP Name


Primary CPICH Tx Power; Primary CPICH power; Primary CPICH Power TS 25.331: “RRC Protocol Specification”

3GPP Reference

TS 25.433: “UTRAN Iub Interface NBAP Signaling” TS 25.423: "UTRAN Iur interface RNSAP signalling"

Field Name

PcpichPwr This parameter indicates the transmit power of the PCPICH. It

Description

is an absolute value. The cell uses this power to transmit the PCPICH.


P-CPICH Power

Value Range

(-10.0..50.0) (-10.0..50. 0) dBm step 0.1dBm

Default Value

33dBm

Scope

UTRAN Cell

Function

Power Control The parameter value is related to the scenario defined by the cell coverage attribute and should be adjusted according to the


coverage attribute of the cell. Typically, the rational value of Ec/Io of the PCPICH at the edges of the cell is about -12dB. If the power is high, it is a waste of power. If the power is low, QoS cannot be guaranteed in case that a subscriber is at the edge of the cell.

Primary SCH Power 3GPP Name

Primary SCH Power

3GPP Reference

TS 25.433: “UTRAN Iub Interface NBAP Signalling” Signalling ”

Field Name

PschPwr This parameter indicates the transmit power of the PSCH. It is

Description

a relative value (dB) of the transmit power of the PCPICH of the local cell.


PSCH Power

Value Range

(-35..+15) dB step 0.1dB

Default Value

-3dB

Scope

UTRAN Cell

Function

Power Control

Recommended

The transmit power of the PSCH should ensure that the

Configuration

subscribers at the edges of the cell correctly detect the PSCH.


3GPP Name

Primary SCH Power In network optimization, you can adjust the power according to the actual cell search success status of the subscribers. Usually, because the transmit power of the PSCH is associated with the PCPICH, the default configuration can ensure successful synchronization only if the power of the PCPICH is appropriate.

Secondary SCH Power 3GPP Name

Secondary SCH Power

3GPP Reference

TS 25.433: “UTRAN Iub Interface NBAP Signalling” Signallin g”

Field Name

SschPwr This parameter indicates the transmit power of the SSCH. It is

Description

a relative value (dB) of the transmit power of PCPICH of the local cell.


SSCH power

Value Range

(-35..+15) dB step 0.1dB

Default Value

-4dB

Scope

UTRAN Cell

Function

Power Control

Recommended

The recommended configuration is the same as the transmit

Configuration

power of the the PSCH.

S-CCPCH Time Slot Format 3GPP Name

Secondary CCPCH Slot Format

3GPP Reference


Field Name

SlotFmt This parameter indicates the format of timeslot used by the

Description

SCCPCH. The SCCPCH uses a total of 18 formats of timeslots.


SCCPCH Slot Format

Value Range

0..17 SCCPCH to bear PCH: 4

Default Value

SCCPCH to bear R99 FACH: 8 SCCPCH to bear MCCH: 6

Scope

UTRAN Cell

Chapter 1


3GPP Name

Secondary CCPCH Slot Format

Function

-

Recommended

The timeslot format of the SCCPCH determines the bearer rate

Configuration

over SCCPCH.

S-CCPCH TFCI Field Power Offset 3GPP Name

PO1

3GPP Reference


Field Name

PO1 This parameter indicates the offset (relative value) of the

Description

transmit powers of the SCCPCH in the TFCI field and the data field. The offset varies according to the data bit rate.


S-CCPCH TFCI Field Power Offset

Value Range

(0..6) dB step 0.25 dB

Default Value

3dB

Scope

UTRAN Cell

Function

Power Control This parameter is associated with the SF of the SCCPCH that bears the FACH. FACH. Typically Typically,, when the SF changes, changes, the gain gain over


the channel changes as well. Therefore, to maintain the bit detection performance of the TFCI field of the SCCPCH, the parameter should also be adjusted. The principle is: The smaller the SF of the SCCPCH, the smaller the parameter value.

S-CCPCH Pilot Field Power Offset 3GPP Name

PO3

3GPP Reference


Field Name

PO3 This parameter indicates the offset (relative value) of the transmit

Description

powers of the the SCCPCH in the PILOT PILOT field and and the data field. field. The offset varies according to the data bit rate.

Description of data item of radio parameter message GUI

Element

Name

S-CCPCH Pilot Field Power Offset

Value Range

(0.6) dB step 0.25 dB

Default Value

3dB


3GPP Name

PO3

Scope

UTRAN Cell

Function

Power Control

Recommended

The recommended configuration is the same as SCCPCH TFCI

Configuration

Field Power Offset.

Maximum FACH Power 3GPP Name

Max FACH Power

3GPP Reference


Field Name

MaxFachPwr This parameter indicates the maximum transmit power (relative

Description

value based on the transmit power of the PCPICH) of the FACH mapped to the SCCPCH.


Maximum FACH transmitting transmitt ing power

Value Range

(-35..15)dB step 0.1 dB

Default Value

-1dB

Scope

UTRAN Cell

Function

Power Control


This parameter is associated with the data rate over the FACH. The larger the data rate over the FACH, the larger the required power. power.

2 Cell selectio select ion n and parameter parameter re-selecti re-selection on Execute PLMN selection and cell selection process in sequence after UE bootstrap. The cell shall be selected for staying and registration to network side after selecting a suitable cell. UE will select the cell again after staying to a certain serving cell with UE motion and variation of signal channel quality.

PLMN selection process: PLMN selection standard is that CPICH RSCP is more than or equal to -95dBm. UE will read PLMN of cell which has searched for the strongest signal. PLMN also can be regarded as selection access PLMN if failing to meet above standards but PLMN mark can be decoded. Cell selection process: Cell with the strongest signal shall be regarded as the initial access cell. S rule definitions of cell selection standards are as follows:

for FDD cells:

Srxlev > 0 AND Squal > 0

for TDD cells:

Srxlev > 0

In which:

Squal = Qqualmeas – Qqualmin Srxlev = Qrxlevmeas - Qrxlevmin - Pcompensation

Squal Srxlev

Cell selection quality value (dB) It is only suitable to FDD cell. RX level value (dB) for cell selection Measured cell quality value: CPICH E c/N0 refers to quality of

Qqualmeas

signals received by FDD cell and it is only suitable to FDD cell.


RX level value of measured cell: Received signal of FDD cell Qrxlevmeas

is CPICH RSCP (dB) and that of TDD cell is P-CCPCH RSCP (dBm) and that of GSM cell is RXLEV（dBm）. It refers to the minimum quality value required for cell ant it is

Qqualmin

only suitable to FDD cell.

Qrxlevmin

The minimum RX level (dBm) required for cell;

P compensation

Max (UE_TXPWR_MAX_RAC (UE_TXPWR_MAX_RACH H – P_MAX, 0)

UE_TXPWR_MAX_

The maximum available TX power level of UE (which is read

RACH

from system messages) during RACH cell access;

P_MAX

The maximum RF output power of UE ，(dBm)

Cell re-selection process UE will select cell again after staying to the cell. Cell re-selection includes measurement execution and determination of UE.

Following introduction is not suitable to HCS cell. 

Measurement rules:

UE will regard Squal （FDD cell ） as Sx in following rules: UE does not need to execute inter-frequency measurement if Sx exceeds Sintrasearch. UE will execute inter-frequency measurement if Sx is less than or equal to Sintrasearch. UE will carry on intra- frequency measurement if Sintrasearch has not been configured. UE does not need to execute inter-frequency measurement if Sx exceeds Sintrasearch. UE will execute inter-frequency measurement if Sx is less than or equal to Sintrasearch.

Chapter 2 Cell selection and parameter re-selection

UE will carry on inter- frequency measurement measurement if Sintrasearch has not been configured. UE does not need to measure cells with different radio measurement techniques if Sx exceeds SsearchRAT m. UE will measure other RAT m cells if Sx is less than or equal to SsearchRATm. UE will measure other RAT m cells if SsearchRAT m has not been configured. 

Cell re-selection determination rules are as follows:

Following cell re-selection standards are used for intra-frequency, inter-frequency and inter-RAT cells: R rules for cell array standards are as follows:

R s = Qmeas,s + Qhysts R n = Qmeas,n - Qoffsets,n - TOn * (1 – Ln) In which:

In which: Tn is a timer and it shall be started up if signal quality of adjacent cell is better than sum of signal quality of serving cell and relative offset（Qoffset1 s,n or Qoffset2 s,n） of serving cell and adjacent cell. That is, adjacent cell shall be deducted deducted by offset if signals of adjacent cell fluctuate so that it is difficult to be regarded as target cell for re-selection. All cells which meet S standard shall be founded out firstly then arrayed according to above R rules and cell with the largest R shall be regarded as target cell for re-selection during cell re-selection determination. UE will execute cell re-selection process if re-selection interval meets cell re-selection standard and UE has stayed in current serving cell for more than 1 second. Minimum demand level of cell quality (Qqualmin)


3GPP Name 3GPP Reference Field Name

Qqualmin TS 25.304: “UE Procedures in Idle Mode” TS 25.331: “RRC Protocol Specification” QQualMin This parameter indicates the minimum cell quality level that satisfies cell selection and reselection conditions. When the

Description

measured value is CPICH Ec/No, the quality value of the measured cell must be greater than Qqualmin before it can meet the condition for cell selection.


Minimum demand level of cell quality

Value Range

(-24..0) dB step 1dB

Default Value

-18 dB

Scope

UTRAN Cell

Function

Cell Selection/Reselection Selection/Reselection This parameter is the foundation for determining the S rule of the cell. Typically, you should use the default value. However, in the scenario of a highway, because the distance between stations is large, the number of cells is small with a large

Recommended

distance, and the UE moves fast, the original cell will therefore

Configuration

features a power signal quality. In this case, the UE fails to reselect the new cell. Therefore, you can lower Qqualmin and Qrxlevmin to make the UE complete the cell reselection as early as possible. The principle also applies to the corners of crowded cells.

Minimum Cell Receiving Electrical Level Threshold (Qrxlevmin) 3GPP Name 3GPP Reference Field Name

Qrxlevmin TS 25.304: “UE Procedures in Idle Mode” TS 25.331: “RRC Protocol Specification” QRxLevMin This parameter indicates the minimum cell receiving level that satisfies the cell selection and reselection conditions. When the

Description

measured value is CPICH RSCP, the receiving level of the measured cell must be greater than Qrxlevmin before it can meet the condition for cell selection.


Minimum cell receiving electrical level threshold

Value Range

(-115..-25) dBm step 2dBm


3GPP Name

Qrxlevmin

Default Value

-115 dBm

Scope

UTRAN Cell

Function

Cell Selection/Reselection Selection/Reselection


The recommended configuration is the same as Qqualmin.

Measurement Quantity for Cell Selection and Reselection 3GPP Name 3GPP Reference Field Name Description

Cell selection and reselection reselectio n quality measure TS 25.331: “RRC Protocol Specification” TS 25.304: “UE Procedures in Idle Mode” QualMeas This parameter indicates the measure for cell selection and reselection.

Description of data item of radio parameter message GUI Element Name Value Range

Cell re-selection re-selecti on measurement quantity 1: CPICH Ec/No 2: CPICH RSCP

Default Value

CPICH Ec/No

Scope

UTRAN Cell

Function

Cell Selection/Reselection Selection/Reselection This parameter indicates the measure as determination standard for cell selection and reselection. This parameter is determined in view of the co-channel interference. When you configure a co-channel neighboring cell for the cell, the co-channel interference is larger. To better reflect the signal quality, you should use CPICH Ec/No as the

Recommended

determination standard of the measure. However, when you

Configuration

configure an inter-frequency or inter-system neighboring cell, there is no co-channel interference. In this case, it is more appropriate to use CPICH RSCP as the determination standard for the measure. In a typical networking, there are a lot of co-channel neighboring cells; therefore, you should select CPICH Ec/No as the default value.

Synchronization frequency Measurement Trigger Threshold for Cell Re-selection (Sintrasearch)


3GPP Name

Sintrasearch

3GPP Reference Field Name

TS 25.304: “UE Procedures in Idle Mode” TS 25.331: “RRC Protocol Specification” SIntraSearch This parameter indicates the intra-frequency measurement trigger for cell reselection. The UE uses this parameter to determine whether to execute intra-frequency measurement. In case HCS is not used, if the quality of the

Description

serving cell is greater than Sintrasearch, intra-frequency measurement is not executed. If the quality of the serving cell is smaller than or equal to Sintrasearch or Sintrasearch is not configured, the UE executes intra-frequency measurement. For details, see TS 25.304.


Synchronization frequency measurement trigger threshold for cell re-selection re-select ion

Value Range

(0..20 ) dB Step 2dB

Default Value

14dB

Scope

UTRAN Cell

Function

Cell Selection/Reselection Selection/Reselection The parameter is determined depending on the situation whether the specific scenario expects the reselection of the intra-frequency cell as soon as possible.

Recommended

A smaller parameter value is more likely to trigger the measurement of the

Configuration

intra-frequency cell. A larger parameter value is not easy to trigger the measurement. The recommended configuration is based on the universal scenarios. Therefore, you should follow the recommended configuration.

Inter-frequency

Measurement

Trigger

Threshold

for

Cell

(Sintersearch) 3GPP Name 3GPP Reference Field Name

Sintersearch TS 25.304: “UE Procedures in Idle Mode” TS 25.331: “RRC Protocol Specification” SInterSearch This parameter indicates the inter-frequency measurement trigger for cell reselection. The UE uses this parameter to determine whether to execute inter-frequency measurement. In case HCS is

Description

not used, if the quality of the serving cell is greater than SInterSearch, inter-frequency measurement is not executed. If the quality of the serving cell is smaller than or equal to Sintrasearch or

SInterSearch

is

not

configured,

the

UE

inter-frequency measurement. For details, see TS 25.304. Description of data item of radio parameter message

executes

Re-selection


3GPP Name

Sintersearch

GUI

Inter-frequency

Element

measurement

Name

re-selection

Value Range


Default Value

10dB

Scope

UTRAN Cell

Function


trigger

threshold

for

cell

The parameter is determined depending on the situation whether the

specific

scenario

expects

the

reselection

of

the

Recommended

inter-frequency cell as soon as possible. A smaller parameter

Configuration

value is more likely to trigger the measurement of the intra-frequency cell. A larger parameter value is not easy to trigger the measurement.

Inter-system Measurement Trigger Threshold for Cell Re-selection (Ssearch, RAT) 3GPP Name 3GPP Reference Field Name

Ssearch,RAT TS 25.304: “UE Procedures in Idle Mode” TS 25.331: “RRC Protocol Specification” SSearchRat This parameter indicates the triggers Ssearch, RAT for inter-system measurement for cell reselection. The UE uses these triggers to determine whether to execute inter-system measurement. In case

Description

HCS is not used, if the quality of the serving cell is greater than Ssearch, RAT, inter-system measurement is not executed. If the quality of the serving cell is smaller than or equal to Ssearch, RAT or Ssearch, RAT is not configured, the UE executes inter-system measurement. For details, see TS 25.304.


Element

Name

Inter-system measurement trigger threshold for cell re-selection

Value Range


Default Value

6dB

Scope

UTRAN Cell

Function

Cell Selection/Reselection Selection/Reselection The parameter is determined depending on the situation whether

Recommended

the specific scenario expects the reselection of the inter-system cell

Configuration

as soon as possible. A smaller parameter value is more likely to trigger the measurement of the intra-frequency cell. A larger


3GPP Name

Ssearch,RAT parameter value value is not easy easy to trigger the the measurement. measurement.

Re-selection Lag 1 of Serving Cell (Qhyst1s) 3GPP Name

Qhyst1 s

3GPP

TS 25.331: “RRC Protocol Specification” Specification”

Reference

TS 25.304: “UE Procedures in Idle Mode”

Field Name

QHyst1S This parameter indicates the hysteresis parameter for determining FDD cell reselection in case that the measure is CPICH RSCP. In the

Description

R rule of cell reselection, the R value of the cell is equal to the measured value plus the hysteresis parameter. For details, see TS 25.304.


Element

Name

Re-selection lag 1 of serving cell

Value Range

(0..40) dB step2 dB

Default Value

10dB

Scope

UTRAN Cell

Function

Cell Selection/Reselection Selection/Reselection The parameter is determined depending on the situation whether the specific scenario expects the reselection of the inter-frequency cell as soon as possible. A larger parameter value indicates that the UE is


more expected to reside in the current serving cell. A smaller parameter value is more likely to trigger the measurement measurement of the intra-frequency cell. However, a larger value may result in poor signal quality of the local cell whereas good quality of the neighboring cell. In this case, cell reselection still will not be triggered.

Re-selection Lag 2 of Serving Cell (Qhyst2s) 3GPP Name 3GPP Reference Field Name

Qhyst2 s TS 25.331: “RRC Protocol Specification” TS 25.304: “UE Procedures in Idle Mode” QHyst2S This parameter indicates the hysteresis parameter for determining

Description

FDD cell reselection in case that the measure is CPICH Ec/No. In the R rule of cell reselection, the R value of the serving cell is equal to the measured value plus the delay parameter. For details,


3GPP Name

Qhyst2 s see TS 25.304.


Re-selection Re-selecti on lag 2 of serving cell

Value Range

(0..40) dB step 2 dB

Default Value

2 dB

Scope

UTRAN Cell

Function


Recommended Configuration Configurati on

The recommended configuration is the same as QHyst1S.

Timer Duration for Cell Re-selection (Treselections) 3GPP Name

Treselection s TS 25.331: “RRC Protocol Specification”

3GPP Reference

TS 25.304: “UE Procedures in Idle Mode”

Field Name

T reselection This parameter indicates the timer for cell reselection. For a serving cell, a new cell must prolong the Treselections

Description

duration according to the R sorting rule before it can be selected as the new serving cell.


Timer duration for cell re-selection

Value Range

(0..31) s step 1s

Default Value

1s

Scope

UTRAN Cell

Function

Cell Selection/Reselection Selection/Reselection The purpose of Treselection is to avoid mutual reselection


between two cells. In a scenario where a cell features dense signal with fast changes, you need to increase the difficulty for reselection, for example, increase the timer, to avoid frequent reselection. This helps to cut down Treselections.

Quality Offset 1 (Qoffset1s,n in SIB11) of Corresponding Serving Cell and Adjacent Cell in SIB11 3GPP Name 3GPP Reference Field Name

Qoffset1 s,n TS 25.331: “RRC Protocol Specification” TS 25.304: “UE Procedures in Idle Mode” Qoffset1SNSib11


3GPP Name

Qoffset1 s,n This parameter indicates the offset between the serving cell and the

Description

neighboring cell in the event that the measure is CPICH RSCP. It is required to sort cells in cell reselection. This parameter is broadcasted to the UE in SIB11.


Element

Name

Quality offset 1 of corresponding serving cell and adjacent cell in SIB11

Value Range

OMCR: (-50..50) dB RNC: D=P+50, 0..100

Default Value

0dB

Scope

UTRAN Neighboring Cell, GSM Neighboring Cell

Function

Cell Selection/Reselection Selection/Reselection This parameter indicates the offset between the serving cell and the neighboring cell in the event that the measure is CPICH RSCP. Cell reselection follows the R rule, and the R value of the neighboring cell is equal to the measured value subtracting the neighboring quality offset. The parameter is determined depending on the situation whether the specific scenario expects the reselection of the inter-frequency cell as soon as possible. A larger parameter value indicates that the neighboring cell is more impossible to be reselected as the destination cell, and therefore cell reselection seldom happens. A smaller parameter value is more likely to trigger cell reselection. However, a larger value may result in poor quality of the local cell


and good quality of the neighboring cell. In this case, cell reselection still will not happen. In co-networking of UMTS and GSM, continuous coverage is expected inside the UMTS network. Only when the UMTS network covers edges, cell reselection from UMTS to GSM is required. Therefore, in the suburbs with dense signals, you can increase Qrxlevmin in SIB11 and Qoffset1-s, n in SIB11 (neighboring cell) to improve the difficulty for cell reselection. As to the edges of the UMTS network, especially a highway, the UE moves fast. In this case, the signal of the UMTS cell quickly decreases. In case that the UE goes into the GSM network coverage area but cell reselection still does not happen. Therefore, you can increase Ssearch, RAT and reduce Qrxlevmin in SIB11 and Qoffset1-s, n in SIB11 (neighboring cell) to help the UE complete cell reselection as early as possible.

Quality Offset 2(Qoffset2s, n in SIB11) of Corresponding Serving Cell and Adjacent Cell in SIB11


3GPP Name 3GPP Reference Field Name

Qoffset2 s,n TS 25.331: “RRC Protocol Specification” TS 25.304: “UE Procedures in Idle Mode” Qoffset2SN Sib11 This parameter indicates the offset between the serving cell and

Description

the neighboring cell in the event that the measure is CPICH Ec/No. It is required to sort cells in cell reselection. This parameter is broadcasted broadcasted to the UE in SIB11. SIB11.


Value Range

Quality offset 2 of corresponding serving cell and adjacent cell in SIB11 OMCR: (-50..50) dB RNC: D=P+50,0..100

Default Value

0dB

Scope

UTRAN Neighboring Cell

Function


Recommended

The

Configuration

Qoffset1SNSib11.

recommended

configuration

is

the

same

as

3 Rando Random m access parameter Registration process shall be initiated after UE selecting a cell for staying. A random access process shall be initiated firstly according to system broadcasting messages. In addition, random access process shall be executed for uplinkinteraction between UE and network side firstly once UE is under idle, CELL_PCH/URA_PCH or CELL_FACH status. Frame structure of random access channel:

Preamble

Preamble

Preamble

Message part

4096 chips

10 ms one radio radio frame

Preamble

Preamble

Preamble

Message part

4096 chips

20 ms two radio radio frames frames Prefix of frame structure consists of signature code and scrambling. Timing relationship between PRACH and AICH One access slot Acq. Acq. Ind.

AIC AICH H acces ccess s slots RX at UE

τp-a p-a PRACH access slots TX at UE

Preamble

Preamble

τp-p p-p

Message part

τp-m p-m


In which: -

When AICH_Transmission_Timing AICH_Transmission_Timing is 0:

τ p-p,min = 15360 chips (3 access slots) τ p-a = 7680 chips τ p-m = 15360 chips (3 access slots) -

When AICH_Transmission_Timing AICH_Transmission_Timing is 1:

τ p-p,min = 20480 chips (4 access slots) τ p-a = 12800 chips τ p-m = 20480 chips (4 access slots) Random access includes MAC layer and physical layer. Physical channels used for random access are represented by scrambling and signature. Access process of physical layer Effective uplinkaccess time slot gained from access time slot collection ：An effective access time slot shall be selected randomly among corresponding access time slot collection for effective RACH sub-channel Number which is required for corresponding ASC. A signature shall be selected randomly among available signatures which correspond to selected ASC. Setting prefix retransmission counter is Preamble Retrans Max. Setting initial transmitting power of prefix Setting prefix transmitting power is equal to the maximum transmitting power if calculated

prefix

transmitting

power

exceeds

the

maximum

permissible

uplinktransmitting power. Setting prefix transmitting power is equal to the minimum transmitting power if calculated prefix transmitting power is less than the maximum permissible uplinktransmitting power. power. Then selected signature, uplinkaccess time t ime slot and prefix transmitting power shall be connected to prefix. If UE has not received yes/no reply of selected signature （AI ≠ +1 nor –1 ）of AICH during Downlinkaccess time slot which is defined after uplinkaccess time slot: 

An effective access time slot shall be selected randomly among effective RACH

Chapter 3

Random access parameter

sub-channel Number which corresponds to selected ASC. 

An available signature shall be selected randomly among available signatures which correspond to selected ASC.



Prefix Prefix transmitt transmitting ing power power shall shall be be increase increased d by step step length length of of

P0 = Power Ramp

Step [dB] 

Prefix retransmission counter shall be deducted by 1.



Turn to Step 5 for re-execution if prefix retransmission counter exceeds 0 or physical layer (L1) of UE will report status (of “No ack on AICH”) to MAC and exit physical random access process.

UE physical layer will report (of “No ack on AICH received”) to MAC and exit physical random access process if UE has received negative reply for selected signature of AICH during definition period after uplinkaccess time slot. rd

th

UE will send random access messages during the 3 or 4 uplinkaccess time slot after sending the prefix time slot finally after receiving positive reply for selected signature of AICH during definition period after uplinkaccess time slot. The 3

rd

or 4

th

uplinkaccess time slot depends on MAC parameter of AICH transmission timing. Physical layer L1 of UE will report status (of "RACH message transmitted") to MAC and exit physical random access process. Access process of MAC layer MAC layer will generate random quantity and send probability (Pi) for comparison if data shall be sent. Sending Sending is not allowed unless it exceeds Pi. Pi.

MAC layer will will wait

form next TTI for re-sending if sending is not allowed previously. Random access process request of physical layer will be initiated to L1 if sending is allowed. Physical layer will feedback to MAC layer for notice of successful access to RRC layer if prefix sent by physical layer has been confirmed by AICH signal channel. L1 layer will notify MAC layer of access failure if prefix sending times of physical layer is equal to the maximum prefix retransmission times but reply of AICH channel has not been received. MAC layer will send reply again for next TTI. MAC layer will start up revolution timer (TBO1) after physical layer receives negative


reply of AICH and notice to MAC layer. It can be sent again after timing. TBO1 can be set to NBO1 times of interval of 10ms ； 0 ≤ NBO1min ≤ NBO1 ≤ NBO1max； NBO1min can be equal equal to NBO1max when expecting expecting a fixed delay. delay. MAC layer will notify RRC RACH of sending failure if re-trial times exceed the maximum preamble cycle times of RACH.

Available Signature 3GPP Name

Available Signature ; Preamble Signatures


TS 25.331: “RRC Protocol Specification” TS 25.433: “UTRAN Iub Interface NBAP Signalling” Signature This parameter indicates all available signatures for PRACH access. The 16 bits represents 16 signatures. If the value of a bit

Description

is 1, it indicates that the corresponding signature is available. One signature number corresponds to one SF=16 channelized coded number.


Available signature Bitstring(16) Bit0: sig0

Value Range

.. Bit15: sig15 Bit of 1 refers to available signature.

Default Value

1

Scope

UTRAN Cell

Function

PRACH signatures distinguish between subscribers. To avoid the same sending preamble for multiple subscribers, multiple


available signatures are defined in the protocol. A subscriber can select a random signature before sending. The more signatures you configure, the smaller probability a conflict occurs.

PRACH Available Subchannel Number 3GPP Name 3GPP Reference

Available Subchannel Number; RACH Subchannel Numbers TS 25.331: “RRC Protocol Specification” TS 25.433: “UTRAN Iub Interface NBAP Signaling”

Chapter 3


3GPP Name

Available Subchannel Number; RACH Subchannel Numbers

Field Name

AvailSubChanNum This parameter indicates available subchannel numbers of the PRACH. The subchannel number defines the available access

Description

timeslot for the PRACH. Each bit indicates whether the subchannel number is available. Each subchannel number can correspond to multiple access timeslots.


PRACH available subchannel number Bitstring (12) bit0: subch0

Value Range

.. bit11: subch1 subch11 1 Bit of 1 refers to available subchannel

Default Value

4095

Scope

UTRAN Cell

Function An available subchannel number offers an chance for PRACH


access. More subchannel numbers means more access chances.

PRACH Available SF 3GPP Name

Available SF

3GPP Reference

TS 25.331: “RRC Protocol Specification” Specificat ion”

Field Name

AvailableSF This parameter indicates the minimum available spreading

Description

factor (SF) for the PRACH (namely, the parameter restricts the maximum transmission rate of the PRACH).


PRACH available spreading factor

Value Range

(32,64,128,256)

Default Value

64

Scope

UTRAN Cell

Function

-


PRACH 3GPP Name

The PRACH available SF reflects the uploading rate of the PRACH. The larger the rate, the smaller the SF.

Preamble Scrambling Code Preamble scrambling code number; Scrambling Code Number


3GPP Name

Preamble scrambling code number; Scrambling Code Number TS 25.331: “RRC Protocol Specification” Specification”

3GPP Reference

TS 25.433: “UTRAN Iub Interface NBAP Signaling”

Field Name

PreamScraCode This parameter indicates the preamble scrambling code number for the PRACH. The scrambling code number used by the PRACH is

Description

associated with the downlink primary scrambling code, and a maximum of 16 scrambling codes are available. This parameter distinguishes between PRACH physical channels.


PRACH preamble scrambling code

Value Range

0..15

Default Value

0 (PRACH shall be increased by 1 if one value is added)

Scope

UTRAN Cell

Function

The PRACH preamble scrambling code number distinguishes between physical physical channels. If multiple PRACH channels are


configured in the cell, you need only to ensure that the scrambling codes are different between PRACH physical channels.

Initial Dynamic Persistence Level 3GPP Name

Dynamic persistence level

3GPP Reference


Field Name

DynPstLevelInit DynPstLevelI nit This parameter indicates the initial value of the dynamic persistence level used for calculating the sending possibility of the MAC layer in the event

Description

of ASCi ≥ 1. each PRACH should be configured with a dynamic persistence level. The dynamic persistence levels of multiple PRACH channels can be broadcasted in SIB 7.


Initial dynamic persistence level of PRACH

Value Range

1..8

Default Value

1

Scope

UTRAN Cell

Function

Dynamic persistence level determines the access probability of the MAC


layer. The larger the parameter value, the higher the access probability. If the cell traffic is low, you can set the parameter value to 1 to avoid access

Chapter 3

3GPP Name


Dynamic persistence persistenc e level delay as best as possible. If the cell traffic is high, you can reduce the dynamic persistence level to prevent interference due to the conflict that occurs during the access process of multiple subscribers. This ensures that the subscribers can access the network at different points of time.

Maximum Allowed UL TX Power of RACH 3GPP Name

Maximum allowed UL TX power

3GPP Reference


Field Name

MaxRACHTxPwr This parameter indicates the maximum uplink transmit power used by

Description

the RACH.


Maximum transmitting transmitti ng power of RACH

Value Range

(-50..33) dBm

Default Value

24dBm

Scope

UTRAN Cell

Function

Power Control The configuration is associated with the cell coverage and UE capabilities. In network planning, you should determine the coverage


according to the UE capabilities, and therefore determine the maximum transmit power of the PRACH. A larger value is not sure the best. The parameter value should match the coverage. coverage. Otherwise, large interference occurs.

PRACH Preamble Power Ramp Step 3GPP Name

Power Ramp Step

3GPP Reference


Field Name

PRStep This parameter indicates that the UE needs to ramp up the step on the

Description

basis of the original power after sending one preamble whereas failing to receive any response from the AICH. The UE then uses this power to send next preamble.


PRACH preamble power ramp step

Value Range

(1..8)dB step 1dB

Default Value

1dB

Scope

UTRAN Cell


3GPP Name

Power Ramp Step

Function

-


In general, Power Ramp Step affects the speed of random access of the UE. Typically, Use the default settings.

Maximum Number of Preamble Being Transmitted 3GPP Name

Preamble Retrans Max

3GPP Reference


Field Name

MaxPreamRetrans This parameter defines the maximum number of access preambles of

Description

the L1 layer before the layer receives the ACK or NACK response.


Maximum number of preamble being transmitted transmitt ed of PRACH

Value Range

1..64

Default Value

40

Scope

UTRAN Cell

Function

-


This parameter indicates the attempts of the physical layer preamble. Typically, you do not need to change the parameter value.

Sets Lower Bound for Random Back-off of MAC Layer 3GPP Name

NB01min

3GPP Reference


Field Name

NB01min This parameter indicates the minimum time limit for resending after NACK is received. When the UE receives the negative response from the AICH, the MAC layer needs to start the timer Tbo1 so that the MAC layer can attempt to resend after a specific time. This avoids

Description

frequent refusal. TBO1 can be set to NBO1 times the interval of 10 ms and randomly changes in a range. Use this expression to determine NBO1: 0 ≤ NBO1min ≤ NBO1 ≤ NBO1max. After TB01 expires, a new RACH attempt starts.


Sets lower bound for random back-off of MAC layer

Value Range

0..50

Default Value

3

Chapter 3

3GPP Name

NB01min

Scope

UTRAN Cell

Function

-


The random backoff lower and upper limits of the MAC layer are the Recommended Configuration

time lengths for waiting for next access after failure to access the physical layer is determined. The greater the NB01min value, the longer the time to wait. Typically, use the default settings.

Sets Upper Bound for Random Back-off of MAC Layer 3GPP Name

NB01max

3GPP Reference


Field Name

NB01max This parameter indicates the maximum time limit for resending after NACK is received. received. When the UE receives the negative response from the AICH, the MAC layer needs to start the timer Tbo1 so that the MAC layer can attempt to

Description

resend after a specific time. This avoids frequent refusal. TBO1 can be set to NBO1 times the interval of 10 ms and randomly changes in a range. Use this expression to determine NBO1: 0 ≤ NBO1min ≤ NBO1 ≤ NBO1max. After TB01 expires, a new RACH attempt starts.


Sets upper bound for random back-off of MAC layer

Value Range

0..50

Default Value

40

Scope

UTRAN Cell

Function

The random backoff lower and upper limits of the MAC layer are the time lengths for waiting for next access after failure to access the


physical layer is determined. A greater difference difference between NBO01max and NB01min reduces the probability of next conflict after a subscriber fails to access the network. Typically, use the default settings.

Maximum Number of Preamble Ramping Cycles of RACH 3GPP Name

Preamble Retrans Max

3GPP Reference


Field Name

Mmax

Description Descripti on

This parameter indicates the maximum number of possibilities possibili ties


3GPP Name

Preamble Retrans Max for the MAC layer to attempt to send again. When the physical layer returns NACK or NO ACK, the number of attempts of the MAC layer, namely, M increases by 1. When the value of M exceeds Mmax, the MAC layer exits from the access process.


Maximum number of preamble ramping cycles of RACH

Value Range

1..32

Default Value

6

Scope

UTRAN Cell

Function

This parameter indicates the maximum number of access


attempts of the MAC layer. Typically, use the default settings.

AICH Transmitting Power 3GPP Name 3GPP Reference Field Name Description

AICH Power offset; AICH Power TS 25.331: “RRC Protocol Specification” Specification” TS 25.433: “UTRAN Iub Interface NBAP Signaling” AichPwr This parameter indicates the transmit power of the AICH. The value is an offset relative to the primary pilot power.


AICH transmitting transmitti ng power

Value Range

(-22..5) dB step 1dB

Default Value

-7dB

Scope

UTRAN Cell

Function

Power Control The AICH transmit power affects the feedback of the random access process. Therefore, it is important to set the power.


However, since the AICH power is relative to the pilot channel, only if the coverage of the pilot channel is guaranteed, the AICH power offset offset can meet meet the requirement requirement with its default default value.

4 UE call call establ establis ishm hment ent parameter parameter Call establishment process shall be executed once UE selecting the cell with interaction. It also shall be executed after staying on the serving cell if subsequent Traffic requests shall be initiated. Call establishment process is shown as follows:


The Chapter is only to introduce parameters which are not relevant to UE call process and Radio Resource Management. Parameters related to radio resource management are introduced in other Chapters. Waiting Time after UE Sending RRC CONNECTION SETUP REQUEST Message (T300)

Chapter 4

3GPP Name

T300

3GPP Reference

TS 25.331

Field Name

T300

UE call establishment establishment parameter parameter

This parameter indicates the wait after the UE sends the "RRC

Description

CONNECTION SETUP REQUEST" message.


Waiting time after UE sending RRC CONNECTION SETUP REQUEST messages (T300) OMCR: (100,200,400,600,800,1000,1200,1400,1600,1800,2000,3000,4000,6

Value Range

000,8000) ms RNC:(0..14)

Default Value

2000ms

Scope

RNC

Function

-


You should consider at least one loopback delay for this parameter.

Maximum Number of Retransmissions of the RRC CONNECTION REQUEST Message (N300) 3GPP Name

N300

3GPP Reference

TS 25.331

Field Name

N300 This parameter indicates the maximum times for resending the

Description

"RRC CONNECTION SETUP REQUEST" message.


Maximum number of retransmission of the RRC CONNECTION SETUP REQUEST message (N300)

Value Range

(0..7)

Default Value

3

Scope

RNC

Function

-


This parameter offers multiple sending chances for the RRC link request. Typically, use the default settings.

Waiting Time for Receiving "In Sync" from L1 in Idle Mode (T312 in Idle Mode) 3GPP Name

T312

3GPP Reference

TS 25.331


3GPP Name

T312

Field Name

T312Idle This parameter indicates T312 in idle mode, that is, the time that

Description

the UE waits for the L1 synchronization indication for starting to establish a dedicated channel.


Waiting time for receiving “In Sync” from L1 in idle mode (T312 in Idle Mode)

Value Range

(1..15)s

Default Value

2s

Scope

RNC

Function

The greater the parameter value, the longer time the physical layer


takes for synchronization. Typically, the principle is to reduce the time for the physical layer to establish the link, and therefore to reduce the call success delay.

Maximum Number of "In Sync" Received from L1 in Idle Mode (N312 in Idle Mode) 3GPP Name

N312

3GPP Reference

TS 25.331

Field Name

N312Idle This parameter indicates N312 in idle mode, that is, the number of

Description

consecutive "in sync" indications that the UE receives from L1 before it successfully successfully establishes establishes a dedicated dedicated channel. channel.


Maximum number of “In Sync” received from L1 in idle mode Idle Mode）（ N312 in Idle OMCR: (1, 2, 4, 10, 20, 50, 100, 200, 400, 600, 800, 1000)

Value Range

RNC: ( 0..11)

Default Value

10

Scope

RNC

Function




Waiting Time for Receiving "In Sync" from L1 in Connected Mode (T312 in

Chapter 4


Connected Mode) 3GPP Name

T312

3GPP Reference

TS 25.331

Field Name

T312Connected This parameter indicates T312 in connected mode, that is, the time

Description

that the UE waits for the L1 synchronization indication indication for starting to establish a dedicated channel.


Waiting time for receiving “In Sync” from L1 in connected mode (T312 in Connected Mode)

Value Range

(1..15)s

Default Value

1s

Scope

RNC

Function




Maximum Number of "In Sync" Received from L1 in Connected Mode (N312 in Connected Mode) 3GPP Name

N312

3GPP Reference

TS 25.331

Field Name

N312Connected

Description

Number of “In Sync” received from L1 for N312 in idle mode before successful successful establishment establishment of special special signal channel channel


Value Range

Maximum number of “In Sync” received from L1 in connected mode（ N312 In Connected Connected Mode Mode ） OMCR: (1, 2, 4, 10, 20, 50, 100, 200, 400, 600, 800, 1000) RNC: (0..11)

Default Value

1

Scope

RNC

Function



takes for synchronization. Typically, the principle is to reduce the time for the physical layer to establish the link, and therefore to


3GPP Name

N312 reduce the call success delay.

Waiting

Time

after

DPCCH

Established

in

CELL_DCH

State

Losing

Synchronization (T313) 3GPP Name

T313

3GPP Reference

TS 25.331

Field Name

T313 This parameter indicates the time to wait after the DPCCH in

Description

CELL_DCH state loses synchronization.


Waiting time after DPCCH established in CELL_DCH state losing synchronization （T313）

Value Range

(0..15) s

Default Value

3s

Scope

RNC

Function

After "out of sync", the message indicating the real failure should


be reported to the upper layer after a specific time. Therefore, the parameter value cannot be too small; otherwise, unnecessary unnecessary link release will result. Typically, use the default settings.

Maximum Number of Successive "Out of Sync" Received from L1 (N313) 3GPP Name

N313

3GPP Reference

TS 25.331

Field Name

N313

Description

This parameter indicates the maximum number of consecutive "out of sync" indications received from L1.


Value Range

Maximum number of successive “out of sync” received from L1 (N313) OMCR: (1, 2, 4, 10, 20, 50, 100, 200) RNC: (0..7)

Default Value

50

Scope

RNC

Function

-


After the link is established, because the radio environment

Chapter 4

3GPP Name


N313 becomes bad, the link is out of sync. This parameter parameter sends the indication of this "out of sync" to the upper layer, which was determined by the physical layer in advance. The parameter value cannot be too small; otherwise, calls drop in case that a sudden and short bad change of the environment occurs.

Maximum Number of Successive "In Sync" Received from L1 When T313 is Activated (N315) 3GPP Name

N315

3GPP Reference

TS 25.331

Field Name

N315 This parameter indicates the maximum number of consecutive "in

Description

sync" indications that the UE receives from L1 in T313 active state.


Value Range

Maximum number of successive “In Sync” received from L1 when T313 is activated (N315) OMCR: (1, 2, 4, 10, 20, 50, 100, 200, 400, 600, 800, 1000) RNC: (0..11)

Default Value

1

Scope

RNC

Function




5 Pagin Paging g parameter parameter PICH signal channels shall be detected when UE is under CELL_PCH/URA_PCH and idle states. PCH channel carried by SCCPCH shall be monitored to gain paging message which is paging type 1.

Calculation formula of paging occasion is shown as follows: Paging Occasion= Occasion= (IMSI div K) mod (DRX cycle cycle length) + n * DRX cycle cycle length In which: K: It refers to several PICHs. n = 0, 1, 2… as long as SFN is below its maximum value. Calculation formula of subscriber’s position in PICH: PI = DRX Index mod Np When: DRX Index = IMSI div 8192 Detailed position in PICH shall be calculated as follows:

⎛

⎢ ⎣

q = ⎜⎜ PI + ⎢((18 × (SFN + ⎣SFN / 8⎦ + ⎣SFN / 64⎦ + ⎣SFN / 512⎦)) mod 144)×

⎝

Mapping of paging indicators Pq to PICH bits: Number of paging indicators per frame (Np) (Np) Np=18

Pq = 1

Pq = 0

{b16q , …, b16q+15} = {1,

{b16q , …, b16q+15} = {0,

Np ⎥ ⎞

⎟ mod Np

144 ⎥⎦ ⎠⎟


Number of paging indicators per frame (Np) (Np)

Np=36

Np=72

Np=144

Pq = 1

Pq = 0

1,…, 1}

0,…, 0}

{b8q , …, b8q+7} = {1, 1,…,

{b8q , …, b8q+7} = {0,

1}

0,…, 0}

{b4q , …, b4q+3} = {1, 1,…,

{b4q , …, b4q+3} = {0,

1}

0,…, 0}

{b2q , b2q+1} = {1, 1}

{b2q , b2q+1} = {0, 0}

UE also can receive paging message which is paging type 2 under CELL_DCH status. DCCH logic channel is adopted so there is no need to calculate paging occasion. CS Domain Discontinuous Reception (DRX) Cycle Length Coefficient 3GPP Name

CN domain specific DRX cycle length coefficient

3GPP Reference

TS 25.331

Field Name

Kcs This parameter is used for DRX receiving of the UE in idle, CELL_PCH connected, and URA_PCH connected states. The parameter is a constant used to calculate paging occasions, or say, required intercepting the period of the PICH. The DRX receiving period is 2k frames. If the UE is in idle state and has performed attaching operations operations in the CS domain and PS domain,

Description

the UE selects the minimum value of CN domain specific DRX cycle length coefficient of both domains as k. otherwise, the UE selects CN domain specific DRX cycle length coefficient of the cross-attaching operation as k. If the UE is in connected state, it selects the minimum value of UTRAN DRX cycle length coefficient and CN domain specific DRX cycle length coefficient of the cross-attaching operation domain as k.


CS domain DRX cycle length coefficient

Value Range

6..9

Default Value

6

Scope

RNC

Function

The size of Kcs determines the paging period of the CS domain


services. The greater the parameter value, the longer the paging period. Therefore, subscribers respond to the network slower. CS domain paging has a higher requirement for real time. Therefore,

Chapter 5

3GPP Name

Paging parameter

CN domain specific DRX cycle length coefficient typically, the parameter should use the minimum value specified by the protocol. protocol.

PS Domain DRX Cycle Length Coefficient 3GPP Name

CN domain specific DRX cycle length coefficient

3GPP Reference

TS 25.331

Field Name

Kps This parameter is used for DRX receiving of the UE in idle, CELL_PCH connected, and URA_PCH connected states. The parameter is a constant used to calculate paging occasions, or say, required intercepting the period of the PICH. The DRX receiving period is 2k frames. If the UE is in idle state and has performed attaching operations in the CS domain and PS domain, the UE selects the minimum value

Description

of CN domain specific DRX cycle length coefficient of both domains as k. otherwise, the UE selects CN domain specific DRX cycle length coefficient of the cross-attaching operation as k. If the UE is in connected state, it selects the minimum value of UTRAN DRX cycle length coefficient and CN domain specific DRX cycle length coefficient of the cross-attaching operation domain as k.


PS domain DRX cycle length coefficient

Value Range

6..9

Default Value

6

Scope

RNC

Function

The size of Kps determines the paging period of the PS domain services. The greater the parameter value, the longer the paging


period. Therefore, subscribers respond to the network slower. PS domain paging has a lower requirement for real time. This means that you can configure a larger value of Kcs. However, considering subscriber experience, the parameter still uses its minimum value.

UTRAN DRX Cycle Length Coefficient


3GPP Name

UTRAN DRX cycle length coefficient

3GPP Reference

TS 25.331

Field Name

KUtran It is used for DRX under idle status and Cell_PCH or URA_PCH connected state. It can be used to calculate paging occasion which is a constant required for PICH cycle. DRX cycle is 2 k .

Description

UE will regard the minimum value of UTRAN DRX cycle length coefficient and CN domain specific DRX cycle length coefficient as k.


UTRAN DRX cycle length coefficient

Value Range

3..9

Default Value

6

Scope

RNC

Function

KUtran is paging cycle in UTRAN side configured for subscribers


without distinguishing PS and CS. A suitable paging cycle shall be mainly defined from the angle of radio resources in radio side.

Number of Paging Indicators per PICH Frame 3GPP Name 3GPP Reference Field Name Description

Number of PI per frame; PICH Mode TS 25.331: “RRC Protocol Specification”; TS 25.433: “UTRAN Iub Interface NBAP Signaling” Np The parameter indicates the number of paging indicators per PICH frame.


Number of paging indicators per PICH frame

Value Range

(18, 36, 72, 144)

Default Value

18

Scope

UTRAN Cell

Function

Power Control Np indicates the number of subscribers subscribers of the PICH. The larger Np is, the larger the number of subscribers can be indicated.


However, the actual number of subscribers that the PICH indicates is associated with the subscriber message carried over the PCH. Therefore, the parameter value cannot be too large. A smaller value ensures that the sent data bits can be repetitive and

Chapter 5

3GPP Name

Paging parameter

Number of PI per frame; PICH Mode the power resource can be smaller.

Sending Times of One Paging Message 3GPP Name

-

3GPP Reference

-

Field Name

PagingSendTimes This parameter indicates the maximum times for sending a paging

Description

message.


Sending times of one paging message

Value Range

1..6

Default Value

3

Scope

UTRAN Cell

Function

-


This parameter improves the success rate of receiving a paging message by a subscriber. Typically, set the parameter value to 3.

PCH Transmitting Power 3GPP Name

PCH Power

3GPP Reference


Field Name

PchPwr This parameter indicates the transmit power of the PCH mapped

Description

to the SCCPCH, which is relative to the power offset of the power of the PCPICH.


PCH transmitting transmitti ng power

Value Range

(-35..15) dB step 0.1dB

Default Value

-3dB

Scope

UTRAN Cell

Function

Power Control PCH is carried over the SCCPCH. Typically, this parameter is used when only the PCH is carried over the SCCPCH. Therefore,


when configuring this power, you need to only ensure that PCH can be corrected decoded at the edges of the cell. Typically, use the default settings.

PICH Transmitting Power


3GPP Name 3GPP Reference Field Name Description

PICH Power offset; PICH Power TS 25.331: “RRC Protocol Specification” TS 25.433: “UTRAN Iub Interface NBAP Signaling” PichPwr This parameter indicates the transmit power of the PICH. It is an offset relative to the primary pilot power.


PICH transmitting transmitti ng power

Value Range

(-10.. 5) dB step1 dB

Default Value

-7dB

Scope

UTRAN Cell

Function

Power Control PICH power is also relative to the PCPICH power and associated


with Np. Currently, the default value is the power offset in case of Np=18. The The power should should decrease decrease with the increase increase of Np. Np.

6 Pow Powe er cont c ontro roll paramete parameterr UMTS power control includes power control of open loop, internal loop and external loop. Open loop power control is actually used to configure original transmitting power and set the maximum and minimum transmitting power for internal loop power control. Therefore, power control of open and int ernal loops shall be placed together. together.

6.1 6.1 Basic Basic p rincipl e of internal internal loop power contro l Basic process of internal loop power control Receiving end will measure signal to interference ratio (SIR ＝ Eb/No) for every received radio chain circuit then compared with target signal to interference ratio required for Traffic. Return control message to send a transmitted power control-TPC command of which bit value is 0 to sender if SIR>=SIR target target . A TPC command of which bit value is 1 will be returned to sender by Downlinkcontrol channel if SIR
Uplinkinternal loop power control

Uplinkinternal loop power control is used for NodeB to adjust UE transmitting power according to received SIR of DPCCH and target SIR. There are 2 algorithms for uplinkinternal loop power control. The 1st algorithm is internal loop power control for every time slot and the 2nd algorithm is internal loop power control for every 5 ti me slots. Downlinkinternal loop power control Downlinkinternal loop power control is used for UE to adjust NodeB transmitting power according according to received DPCH DPCH SIR and target target SIR. There are 2 modes for Downlinkinternal loop power control.


The 1st mode is internal loop power control for every time slot and the 2nd mode is internal loop power control for every 3 time slots. DPCH PC Preamble Length 3GPP Name 3GPP Reference Field Name

PC preamble; PC Preamble TS 25.331: “RRC Protocol Specification” TS 25.423: "UTRAN Iur interface RNSAP signalling" DpcchPcpLen This parameter indicates the length of the DPCH power control (PC) preamble. For the uplink DPCH channel, the PC preamble

Description

should be sent prior to the data channel, and closed-loop power control has been started the time the PC preamble is sent. This best ensures that the power of the data channel channel meets the requirement.


DPCH PC preamble length

Value Range

(0..7) Frames step 1

Default Value

0 Frames

Scope

UTRAN Cell

Function

Power Control

Recommended

DPCH PC Preamble Length has the same purpose of SrbDelay.

Configuration

You need to configure only one of them.

SRB Delay 3GPP Name 3GPP Reference Field Name

SRB delay; SRB Delay TS 25.331: “RRC Protocol Specification” TS 25.423: "UTRAN Iur interface RNSAP signaling" SrbDelay This parameter indicates the number of SRB delay frames.

Description

Upon the time to send the uplink DPDCH data, the signaling data RB0–RB4 in the SRB delay frame is not sent.


SRB delay

Value Range

(0..7) Frames step 1

Default Value

7Frames

Scope

UTRAN Cell

Function

Power Control

Chapter 6

Power control parameter

3GPP Name

SRB delay; SRB Delay

Recommended

The recommended configuration is the same as that of

Configuration

DpcchPcpLen.

Uplink Internal Loop Power Control Algorithm 3GPP Name

Power Control Algorithm

3GPP Reference


Field Name

UlIlPcAlg This parameter indicates which inner loop power control

Description

algorithm should be used. For algorithm 1, inner loop power control is carried out per hour. For algorithm 2, inner loop power control control is carried out every five five timeslots.


Uplink Internal Loop Power Control Algorithm 1: The 1st algorithm 2: The 2nd algorithm

Default Value

The 1st algorithm

Scope

UTRAN Cell and Service Related

Function

Power Control


Typically, if the channel is stable, algorithm 1 should be used. If channel fading is serious, and radio quality features large fluctuation, algorithm 2 should be used.

TPC Step Size of UplinkInternal Loop 3GPP Name

TPC step size

3GPP Reference


Field Name

TpcStepSize This parameter indicates the adjustable step size of the uplink inner loop power control. This parameter should be configured

Description

only when algorithm 1 is selected as the uplink inner loop power control algorithm. For algorithm 2, the default step size is 1, and you should use the default value.


TPC step size of uplinkinternal loop

Value Range

(1,2) dB

Default Value

1dB

Scope



3GPP Name

TPC step size

Function

Power Control When algorithm 1 is selected as the uplink inner loop power control algorithm, TPC step size is adjustable. Typically, the parameter value should allow the UE to trace the change of the

Recommended

channel conditions under worst circumstances and maintain the

Configuration

QoS in time according to the conditions of the UE in the cell, such as speed and fading. In addition, when the channel is stable, the step size should be able to keep the power fluctuation stable. Typically, the default settings can meet the requirement.

DPC Mode of DownlinkInternal Loop 3GPP Name 3GPP Reference Field Name

DPC Mode TS 25.433: “UTRAN Iub Interface NBAP Signalling” TS 25.423: “UTRAN Iur interface RNSAP signalling” DPCMode This parameter indicates which algorithm for downlink inner loop power control should be used. There are two algorithms for

Description

downlink inner loop power control, that is, Single TPC and TPC triplet in soft. No matter which algorithm is used, the UE must be notified.


DPC mode of Downlinkinternal Downlinkinter nal loop 0 : Single time slot mode 1: 3-time-slot mode

Default Value

Single time slot mode

Scope


Function

Power Control

Recommended


Configuration

UlIlPcAlg.

TPC DL Step Size 3GPP Name 3GPP Reference Field Name

FDD TPC Downlink Step Size; TS 25.433: “UTRAN Iub Interface NBAP Signalling” TS 25.423: “UTRAN Iur interface RNSAP signalling” TpcDlStep This parameter indicates the adjustable step size of the

Description

downlink inner loop power control. Typically, in the event of a good radio environment set the parameter to a large value.

Chapter 6

3GPP Name


FDD TPC Downlink Step Size;


TPC DL Step Size

Value Range

(0.5, 1, 1.5, 2) dB

Default Value

1dB

Scope


Function

Power Control

Recommended


Configuration

TpcStepSize.

DPCH Maximum DL Power 3GPP Name 3GPP Reference Field Name

Maximum DL Power; Maximum DL TX Power TS 25.433: “UTRAN Iub Interface NBAP Signalling” TS 25.423: "UTRAN Iur interface RNSAP signalling" MaxDlDpchPwr This parameter indicates the maximum downlink transmit power of the DPCH. When the downlink inner loop power control is executed, the new transmit power must be smaller

Description

than or equal to the DPCH maximum downlink transmit power. If the calculated new transmit power is greater than the configured DPCH maximum downlink transmit power, it must be changed as equal to the DPCH maximum downlink transmit power. power.


DPCH maximum DL power

Value Range

(-35..15) dB step 0.1 dB

Default Value

Conversational

DL 3.4kbps Signaling(AM): 0 dB

Conversational

DL 13.6kbps Signaling:0dB

Conversational

DL WAMR 6.60~23.85kbps: 0dB

Conversational

DL 64kbps (PS Conversational Video): 3dB

Conversational

DL NAMR 4.75~12.2kbps: 0dB

Conversational

DL CS 28.8kbps: -6dB

Conversational

DL CS 32kbps: -4dB

Conversational

DL CS 64kbps: 3dB

Streaming


Streaming


Streaming


Streaming

DL CS 64kbps: 3dB

Streaming

DL PS 16kbps:-4dB


3GPP Name

Maximum DL Power; Maximum DL TX Power Streaming

DL PS64kbps: 1dB

Streaming

DL PS384kbps: 4dB

Streaming

DL PS128kbps: 2dB

Interactive

DL PS 8kbps:-8dB

Interactive

DL PS 16kbps:-4dB

Interactive

DL PS64kbps: 1dB

Interactive

DL PS384kbps: 4dB

Interactive

DL PS128kbps: 2dB

Background

DL PS 8kbps:-8dB

Background

DL PS 16kbps:-4dB

Background

DL PS64kbps: 1dB

Background

DL PS384kbps: 4dB

Background

DL PS128kbps: 2dB

Streaming

DL CS64kbps: 3dB

Interactive

DL PS 1.2Mbps: 4dB

Interactive

DL PS 3.65Mbps: 4dB

Interactive

DL PS 7.2Mbps: 4dB

Interactive

DL PS 10.1Mbps: 4dB

Interactive

DL PS 14.0Mbps: 4dB

Background

DL PS 1.2Mbps: 4dB

Background

DL PS 3.65Mbps: 4dB

Background

DL PS 7.2Mbps: 4dB

Background

DL PS 10.1Mbps: 4dB

Background

DL PS 14.0Mbps: 4dB

Streaming

DL PS 1.2Mbps: 4dB

Streaming

DL PS 3.65Mbps: 4dB

Streaming

DL PS 7.2Mbps: 4dB

Streaming

DL PS 10.1Mbps: 4dB

Streaming

DL PS 14.0Mbps: 4dB

Interactive

DL PS 17.6Mbps: 4dB

Interactive

DL PS 21.096Mbps: 4dB

Background

DL PS 17.6Mbps: 4dB

Background


Streaming

DL PS 17.6Mbps: 4dB

Streaming


Scope

UTRAN Cell, Service and Diversity Mode Related

Function

Power Control


The parameter configuration restricts a single subscriber on use of the cell power resource. Whether the configuration is correct affects the cell throughput. The configuration principle is that

Chapter 6

3GPP Name


Maximum DL Power; Maximum DL TX Power the parameter must be configured according to the Ec/No required by the service and processing gain. The configuration should be able to maintain the basic QoS of the service and ensure the performance of the total cell throughput. Typically, the larger the rate, the larger the maximum transmit power.

DPCH Minimum DL Power 3GPP Name 3GPP Reference Field Name

Minimum DL Power TS 25.433: “UTRAN Iub Interface NBAP Signalling” TS 25.423: "UTRAN Iur interface RNSAP signalling" MinDlDpchPwr This parameter indicates the minimum downlink transmit power of the DPCH. When the downlink inner loop power control is executed, the new transmit power must be greater than or equal

Description

to the DPCH maximum downlink transmit power. If the calculated new transmit power is smaller than the configured DPCH maximum downlink transmit power, it must be changed as equal to the DPCH minimum downlink transmit power.


DPCH Minimum DL Power

Value Range

(-35..15) dB step 0.1 dB

Default Value

Conversational

DL 3.4kbps Signaling(AM): -13dB

Conversational

DL 13.6kbps Signaling:-13dB Signaling:- 13dB

Conversational

DL WAMR 6.60~23.85kbps: -15dB

Conversational

DL 64kbps (PS Conversational Video) : -10dB

Conversational

DL NAMR 4.75~12.2kbps: -15dB

Conversational


Conversational

DL CS 32kbps: -15dB

Conversational

DL CS 64kbps: -10dB

Streaming


Streaming


Streaming


Streaming

DL CS64kbps: -10dB

Streaming

DL PS 16kbps:-15dB

Streaming

DL PS 64kbps: -15dB

Streaming

DL PS 384kbps: -10dB

Streaming


Interactive

DL PS 8kbps:-15dB

Interactive

DL PS 16kbps:-15dB


3GPP Name

Minimum DL Power Interactive

DL PS 64kbps: -15dB

Interactive


Interactive


Background

DL PS 8kbps:-15dB

Background

DL PS 16kbps:-15dB

Background

DL PS 64kbps: -15dB

Background


Background


Interactive

DL PS 1.2Mbps: -10dB

Interactive


Interactive


Interactive


Interactive


Background


Background


Background


Background


Background


Streaming


Streaming


Streaming


Streaming


Streaming


Interactive


Interactive


Background


Background


Streaming


Streaming


Scope


Function

Power Control The parameter configuration ensures the minimum QoS of a service. Therefore, whether the configuration is correct greatly

Recommended

affects QoS sense of subscribers. The configuration principle is:

Configuration

The minimum power should be able to maintain the basic service QoS according to the Ec/No and processing gain required by the service.

DPCH PO1 in TFCI Domain 3GPP Name

PO1

Chapter 6

3GPP Name 3GPP Reference Field Name Description


PO1 TS 25.433: “UTRAN Iub Interface NBAP Signalling” TS 25.423: “UTRAN Iur interface RNSAP signalling” DpchPO1 This parameter indicates the power offset between the TFCI field and the data field of the downlink DPCH.


DPCH PO1 in TFCI domain

Value Range

(0..6) dB step 0.25 dB

Default Value

Conversational

DL 3.4kbps Signaling(AM) : 0dB

Conversational


Conversational

DL WAMR 6.60k~23.85kbps : 0dB

Conversational

DL 64kbps (PS Conversational Video) : 0dB

Conversational

DL NAMR 4.75k~12.2k: 0dB

Conversational

DL CS 28.8kbps: 0dB

Conversational

DL CS 32kbps: 0dB

Conversational

DL CS 64kbps: 0dB

Streaming

DL CS 14.4kbps: 0dB

Streaming

DL CS 28.8kbps: 0dB

Streaming

DL CS 57.6kbps: 0dB

Streaming

DL CS64kbps: 0dB

Streaming

DL PS 16kbps: 0dB

Streaming

DL PS 64kbps: 0dB

Streaming

DL PS 384kbps: 0dB

Streaming

DL PS128kbps: 0dB

Interactive

DL PS 8kbps: 0dB

Interactive

DL PS 16kbps: 0dB

Interactive

DL PS 64kbps: 0dB

Interactive

DL PS 384kbps: 0dB

Interactive

DL PS128kbps: 0dB

Background

DL PS 8kbps: 0dB

Background

DL PS 16kbps: 0dB

Background

DL PS64kbps: 0dB

Background

DL PS 384kbps: 0dB

Background

DL PS 128kbps: 0dB

Interactive

DL PS 1.2Mbps: 0dB

Interactive

DL PS 3.65Mbps: 0dB

Interactive

DL PS 7.2Mbps: 0dB

Interactive

DL PS 10.1Mbps: 0dB

Interactive

DL PS 14.0Mbps: 0dB


3GPP Name

PO1 Background

DL PS 1.2Mbps: 0dB

Background

DL PS 3.65Mbps: 0dB

Background

DL PS 7.2Mbps: 0dB

Background

DL PS 10.1Mbps: 0dB

Background

DL PS 14.0Mbps: 0dB

Streaming

DL PS 1.2Mbps: 0dB

Streaming

DL PS 3.65Mbps: 0dB

Streaming

DL PS 7.2Mbps: 0dB

Streaming

DL PS 10.1Mbps: 0dB

Streaming

DL PS 14.0Mbps: 0dB

Interactive

DL PS 17.6Mbps: 0dB

Interactive


Background

DL PS 17.6Mbps: 0dB

Background


Streaming

DL PS 17.6Mbps: 0dB

Streaming


Scope


Function

Power Control The offset of the TFCI field is relative to the data typically, to

Recommended

guarantee the correctness of the control field, the larger the data

Configuration

field rate, the larger its power, and the small of the difference of the DPCH control field.

DPCH PO2 in TPC Domain 3GPP Name 3GPP Reference Field Name Description

PO2 TS 25.433: “UTRAN Iub Interface NBAP Signalling” TS 25.423: “UTRAN Iur interface RNSAP signalling” DpchPO2 This parameter indicates the power offset between the TPC field and the data field of the DPCH.


DPCH PO2 in TPC domain

Value Range

(0..6) dB step 0.25 dB

Default Value

Conversational

DL 3.4kbps Signaling(AM): 3dB

Conversational


Conversational

DL WAMR 6.60~23.85kbps : 3dB

Conversational

DL 64kbps (PS Conversational Conversationa l Video) 3dB:

Conversational


Conversational

DL CS 28.8kbps: 3dB

Chapter 6

3GPP Name

PO2 Conversational

DL CS 32kbps: 3dB

Conversational

DL CS 64kbps: 3dB

Streaming

DL CS 14.4kbps: 3dB

Streaming

DL CS 28.8kbps: 3dB

Streaming

DL CS 57.6kbps: 3dB

Streaming

DL CS64kbps: 3dB

Streaming

DL PS 16kbps:3dB

Streaming

DL PS 64kbps: 3dB

Streaming

DL PS 384kbps: 0dB

Streaming

DL PS 128kbps: 2dB

Interactive

DL PS 8kbps:3dB

Interactive

DL PS 16kbps:3dB

Interactive

DL PS 64kbps: 3dB

Interactive

DL PS 384kbps: 0dB

Interactive

DL PS 128kbps: 2dB

Background

DL PS 8kbps:3dB

Background

DL PS 16kbps:3dB

Background

DL PS 64kbps: 3dB

Background

DL PS 384kbps: 0dB

Background

DL PS 128kbps: 2dB

Interactive

DL PS 1.2Mbps: 0dB

Interactive

DL PS 3.65Mbps: 0dB

Interactive

DL PS 7.2Mbps: 0dB

Interactive

DL PS 10.1Mbps: 0dB

Interactive

DL PS 14.0Mbps: 0dB

Background

DL PS 1.2Mbps: 0dB

Background

DL PS 3.65Mbps: 0dB

Background

DL PS 7.2Mbps: 0dB

Background

DL PS 10.1Mbps: 0dB

Background

DL PS 14.0Mbps: 0dB

Streaming

DL PS 1.2Mbps: 0dB

Streaming

DL PS 3.65Mbps: 0dB

Streaming

DL PS 7.2Mbps: 0dB

Streaming

DL PS 10.1Mbps: 0dB

Streaming

DL PS 14.0Mbps: 0dB

Interactive

DL PS 17.6Mbps: 0dB

Interactive


Background

DL PS 17.6Mbps: 0dB

Background


Streaming

DL PS 17.6Mbps: 0dB



3GPP Name

PO2 Streaming


Scope


Function

Power Control

Recommended

The

Configuration

ofDpchPO1.

recommended

configuration

is

the

same

as

that

DPCH PO3 in PILOT Domain 3GPP Name 3GPP Reference Field Name Description

PO3 TS 25.433: “UTRAN Iub Interface NBAP Signalling” TS 25.423: “UTRAN Iur interface RNSAP signalling” DpchPO3 This parameter indicates the power offset between the PILOT field and the data field of the downlink DPCH.


Default Value

DPCH PO3 in PILOT domain (0..6) dB step 0.25 dB Conversational

DL 3.4kbps Signaling(AM): 0dB

Conversational

DL 13.6kbps Signaling: 0dB

Conversational

DL WAMR 6.60~23.85kbps: 0dB

Conversational

DL 64kbps (PS Conversational Video): 0dB

Conversational


Conversational

DL CS 28.8kbps: 0dB

Conversational

DL CS 32kbps: 0dB

Conversational

DL CS 64kbps: 0dB

Streaming

DL CS 14.4kbps: 0dB

Streaming

DL CS 28.8kbps: 0dB

Streaming

DL CS 57.6kbps: 0dB

Streaming

DL CS64kbps: 0dB

Streaming

DL PS 16kbps: 0dB

Streaming

DL PS 64kbps: 0dB

Streaming

DL PS 384kbps: 0dB

Streaming

DL PS 128kbps: 0dB

Interactive

DL PS 8kbps: 0dB

Interactive

DL PS 16kbps: 0dB

Interactive

DL PS 64kbps: 0dB

Interactive

DL PS 384kbps: 0dB

Interactive

DL PS 128kbps: 0dB

Background

DL PS 8kbps: 0dB

Chapter 6

3GPP Name


PO3 Background

DL PS 16kbps: 0dB

Background

DL PS 64kbps: 0dB

Background

DL PS 384kbps: 0dB

Background

DL PS 128kbps: 0dB

Interactive

DL PS 1.2Mbps: 0dB

Interactive

DL PS 3.65Mbps: 0dB

Interactive

DL PS 7.2Mbps: 0dB

Interactive

DL PS 10.1Mbps: 0dB

Interactive

DL PS 14.0Mbps: 0dB

Background

DL PS 1.2Mbps: 0dB

Background

DL PS 3.65Mbps: 0dB

Background

DL PS 7.2Mbps: 0dB

Background

DL PS 10.1Mbps: 0dB

Background

DL PS 14.0Mbps: 0dB

Streaming

DL PS 1.2Mbps: 0dB

Streaming

DL PS 3.65Mbps: 0dB

Streaming

DL PS 7.2Mbps: 0dB

Streaming

DL PS 10.1Mbps: 0dB

Streaming

DL PS 14.0Mbps: 0dB

Interactive

DL PS 17.6Mbps: 0dB

Interactive


Background

DL PS 17.6Mbps: 0dB

Background


Streaming

DL PS 17.6Mbps: 0dB

Streaming


Scope


Function

Power Control

Recommended


Configuration

DpchPO1.

Maximum Allowed Uplink DPCH Transmission Power 3GPP Name


Maximum allowed UL TX power; Maximum Allowed UL Tx Power TS 25.331: “RRC Protocol Specification” TS 25.423: "UTRAN Iur interface RNSAP signaling" MaxUlDpchPwr This parameter indicates the maximum transmit power of the

Description

uplink DPCH of the UE. When the uplink inner loop power control is executed, the new transmit power calculated by the


3GPP Name

Maximum allowed UL TX power; Maximum Allowed UL Tx Power UE may exceed the parameter value. In this case, the UE must follow the configured uplink DPCH maximum transmit power.


Maximum Allowed Uplink DPCH Transmission Power

Value Range

(-50..33) dBm step 1

Default Value

33dBm

Scope


Function

Power Control


-

6.2 6.2 Basic Basic principl e of external external loop power contr ol Internal loop power control is to control SIR of single chain circuit to be close to SIR Target. As an auxiliary method, basic principle of external loop power control is that receiver will adjust SIR Target slowly according to actual data receiving quality to guarantee no influence to Traffic quality due to variation of radio environment and maintain relatively constant communication quality. External loop power control process is shown as follows:

Overall process of closed loop power control:

Chapter 6

RN C

SIRtarget SIRtarget Externall Externalloop oop powercontrol:Adjust SIRtargetaccordingto transmissionchannel quality.

Receive transmission channel messages

NodeB

MeasureSIR accordingto received DPCCH


Determineand feedbackTPC commandaccording toSIRofreceived DPCCH

Compare withSIR andSIR target

UE

Determineandadjust transmittingpower

Receive TPC

Uplink Initial SIR Target 3GPP Name 3GPP Reference Field Name

UL SIR Target TS 25.433: “UTRAN Iub Interface NBAP Signalling” TS 25.423: “UTRAN Iur interface RNSAP signalling” ULInitSIR This parameter indicates the initial value of the target signal-to-interference ratio (SIR) of the uplink physical channel.

Description

The target SIR is the standard for uplink inner loop power control. This parameter affects the convergence speed of power control.


Element

Name Value Range

Default Value

Uplink initial SIR target (-8.2..17.3) (-8.2.. 17.3) dB step 0.1 dB Conversational

UL 3.4kbps Signaling(AM): Signaling(AM) : 5.0dB

Conversational Conversationa l

UL 13.6kbps Signaling:5dB

Conversational

UL AMR 6.60~23.85kbps: 4dB

Conversational

UL 64kbps (PS Conversational Video): 6dB

Conversational

UL NAMR4.75~12.2kbps: 4dB

Conversational

UL CS 28.8kbps: 6.0dB

Conversational

UL CS 32kbps: 6.0dB

Conversational

UL CS 64kbps: 6.0dB

Streaming

UL CS 14.4kbps: 4dB

Streaming



3GPP Name

UL SIR Target Streaming


Streaming

UL CS 64kbps: 6.0dB

Streaming

UL PS 16kbps:4dB

Streaming

UL PS 64kbps: 6dB

Streaming

UL PS 384kbps: 6dB

Streaming

UL PS128kbps: 6dB

Interactive

UL PS 8kbps:4dB

Interactive

UL PS 16kbps:4dB

Interactive

UL PS 64kbps: 6dB

Interactive

UL PS 384kbps: 6dB

Interactive

UL PS128kbps: 6dB

Background

UL PS 8kbps:4dB

Background

UL PS 16kbps:4dB

Background

UL PS 64kbps: 6dB

Background

UL PS 384kbps: 6dB

Background

UL PS128kbps: 6dB

Streaming

UL CS64kbps: 6dB

Interactive

UL PS 1024kbps: 6dB

Interactive

UL PS 2.048Mbps: 6dB

Interactive

UL PS 3. 072Mbps: 6dB

Interactive


Interactive

UL PS 5.76Mbps: 6dB

Background

UL PS 1024kbps: 6dB

Background


Background


Background


Background

UL PS 5.76Mbps: 6dB

Streaming

UL PS 1024kbps: 6dB

Streaming


Streaming


Streaming


Streaming

UL PS 5.76Mbps: 6dB

Scope


Function

Power Control


This parameter is associated with the service rate. Typically, the smaller the rate, the smaller the parameter value; the greater the rate, the greater the parameter value.

Maximum Uplink SIR Target 3GPP Name

Maximum Uplink SIR

Chapter 6

3GPP Name

Maximum Uplink SIR

3GPP Reference

TS 25.423: "UTRAN Iur interface RNSAP signalling"

Field Name

ULMaxSIR


This parameter indicates the maximum target SIR of the uplink Description

link. This value restricts the adjustable range of the target SIR of outer loop power control.


Element

Name Value Range

Default Value

Maximum uplink SIR target (-8.2..17.3) (-8.2.. 17.3) dB step 0.1 dB Conversational

UL 3.4kbps Signaling(AM): 15dB

Conversational Conversationa l

UL 13.6kbps Signaling:15dB

Conversational

UL AMR 6.60~23.85kbps: 15dB

Conversational

UL 64kbps (PS Conversational Video): 15dB

Conversational

UL NAMR 4.75~12.2kbps: 15dB

Conversational

UL CS 28.8kbps: 15dB

Conversational

UL CS 32kbps: 15dB

Conversational

UL CS 64kbps: 15dB

Streaming


Streaming


Streaming


Streaming

UL CS 64kbps: 15dB

Streaming

UL PS 16kbps:15dB

Streaming

UL PS 64kbps: 15dB

Streaming

UL PS 384kbps: 15dB

Streaming

UL PS 128kbps: 15dB

Interactive Interacti ve

UL PS 8kbps:15dB


UL PS 16kbps:15dB


UL PS 64kbps: 15dB


UL PS 384kbps: 15dB


UL PS 128kbps: 15dB

Background

UL PS 8kbps:15dB

Background

UL PS 16kbps:15dB

Background

UL PS 64kbps: 15dB

Background

UL PS 384kbps: 15dB

Background

UL PS 128kbps: 15dB


UL PS 1024kbps: 15dB








3GPP Name

Maximum Uplink SIR Interactive

UL PS 5.76Mbps: 17.3dB

Background


Background


Background


Background


Background


Streaming


Streaming


Streaming


Streaming


Streaming


Scope


Function

Power Control

Recommended

This parameter is associated with the service rate. Typically, the

Configuration

greater the rate, the greater the parameter value.

Minimum Uplink SIR Target 3GPP Name

Minimum Uplink SIR

3GPP Reference

TS 25.423: "UTRAN Iur interface RNSAP signalling"

Field Name

ULMinSIR This parameter indicates the minimum value of the target SIR of

Description

the uplink link. This parameter restricts the adjustable range of the target SIR of outer loop power control.


Element

Name Value Range

Default Value

Minimum Uplink SIR Target (-8.2..17.3) (-8.2.. 17.3) dB step 0.1 dB Conversational

UL 3.4kbps Signaling(AM): Signaling(AM) : 2.0dB

Conversational

UL 13.6kbps Signaling:2.0dB Signaling:2. 0dB

Conversational

UL AMR 6.60~23.85kbps: 0.5dB

Conversational

UL 64kbps(PS Conversational Video):

Conversational

UL NAMR 4.75~12.2kbps: 0.5dB

Conversational


Conversational

UL CS 32kbps: 2.0dB

Conversational

UL CS 64kbps: 2.0dB

Streaming


Streaming


Streaming


Streaming

UL CS 64kbps: 2.0dB

2.0dB

Chapter 6

3GPP Name


Minimum Uplink SIR Streaming

UL PS 16kbps:0dB

Streaming

UL PS 64kbps: 2.0dB

Streaming

UL PS 384kbps: 2dB

Streaming

UL PS 128kbps: 2dB


UL PS 8kbps:0dB


UL PS 16kbps:0dB


UL PS 64kbps: 2.0dB


UL PS 384kbps: 2dB


UL PS 128kbps: 2dB

Background

UL PS 8kbps:0dB

Background

UL PS 16kbps:0dB

Background

UL PS 64kbps: 2.0dB

Background

UL PS 384kbps: 2dB

Background

UL PS 128kbps: 2dB


UL PS 1024kbps: 4.0dB




UL PS 3. 072Mbps: 4.0dB





Background


Background


Background


Background


Background


Streaming


Streaming


Streaming


Streaming


Streaming


Scope


Function

Power Control

Recommended

This parameter is associated with the service rate. Typically, the

Configuration

greater the rate, the greater the parameter value.

Uplink SIR Target Up Step Size S ize 3GPP Name

-

3GPP Reference

-

Field Name

UlSirTargUpStep

Description Descripti on

This parameter indicates the upward adjustable step size of the


3GPP Name

target SIR of uplink outer loop power control. Asymmetric mode is taken to set the upward and downward adjustable steps so as to recover the communication quality as soon as possible in the event that the environment becomes worse and slowly reduce the communication quality (more reliable) in the event that the environment becomes better.


Uplink SIR Target Up Step Size

Value Range

(0.1..0.5) (0.1..0. 5) dB step 0.1dB

Default Value

UL 384K (PS): 0.5dB Other: 0.3dB

Scope


Function

Power Control The parameter should be set in view of the environment of the cell where the UE resides in, such as speed and fading. This makes the UE trace the change of the channel condition even in the worst circumstances. In addition, when the channel is stable, the system can maintain stable fluctuation of the power. Often,

Recommended

the worse the channel condition, the greater the parameter

Configuration

value. Typically, you should use the default value. The outer loop power control should follow the principle of quick increase and slow decrease. Quick increase is to ensure that the system can quickly keep up with the change of the environment. Slow decrease avoids call drop or bad subscriber experience due to the quick decrease of the target SIR.

Uplink SIR Target Down Step Size Si ze 3GPP Name

-

3GPP Reference

-

Field Name

UlSirTargDnStep This parameter indicates the downward adjustable step size of the target SIR of uplink outer loop power control. Asymmetric mode is taken to set the upward and downward adjustable steps

Description

so as to recover the communication quality as soon as possible in the event that the environment becomes worse and slowly reduce the communication quality (more reliable) in the event that the environment becomes better.

Description of data item of radio parameter message

Chapter 6


3GPP Name

-

GUI Element Name

Uplink SIR Target Down Step Size

Value Range

(0.1..0.5) (0.1..0. 5) dB step 0.1dB

Default Value

0.1dB

Scope


Function

Power Control

Recommended


Configuration

UlSirTargUpStep.

7 Contr on trol ol paramete parameterr swi tch tc h The switch control includes the switch of synchronization frequency, frequencies and systems, which is introduced as below.

7.1 Basic principle of intra-frequency switch Intra-frequency switch refers to the switch of UE in the cell of UTRAN synchronization frequency point with the continuity of Traffic ensured. The inter-frequency switch is based on the switch of measurement. The inter-frequency measurement includes active set measurement, monitoring set measurement and detective set measurement. The active set refers to the cell collection keeping radio link connection with UE. The monitoring set refers to the cell collection, which keeps no radio link connection with UE, sending message to UE for measurement through the measurement control of synchronization frequency. The detective set refers to the cell collection with synchronization frequency excluding the cell in the active set and detective set. The principle of inter-frequency is beased on the related actions of event execution through measurement. The detail definition and handling process of event is as follows: 1.

Event 1A

Event 1A means that the quality of certain cell outside the active set gets better. The related target cell can be added into the active set when receiving 1A event to improve the gain of more macro diversities. UE will report 1A to RNC when the cell enters into the reporting range of the following formula.

⎛ N

10 ⋅ LogM New + CIO New ≥ W ⋅ 10 ⋅ Log ⎜⎜

A

∑M

⎝ i=1

i

⎞ ⎟⎟ + (1 − W) ⋅ 10 ⋅ LogM Best − (R 1a − H 1a /2) ⎠

In which: the definition for each parameter is as follows: The reporting range of R1a 1A event is used for controlling the difficulty level of cell’s RptRange). being added into active active set ( RptRange


The report lag of H of H 1a cell’s being 1a 1A event is used for controlling the difficulty level of cell’s added into active set ( Hysteresis (Intra)). M New is the measurement of cell outside the active set to be evaluated. CIO New is the offset of cell outside the active set compared to other cell (CellIndivOffset (utranRelation). (utranRelation). M i is the mean value of other cell excluding the best cell in the active set. N A is the number of other cell excluding the best cell in the active set. M Best is the measurement of the best cell for the active set. W is used for the weighting proportion (W ) of the best cell and other cell in the active set for the evaluation criterion.

From the formula it can be seen that enlarging R1a (1A event meets the reporting range of event quality standard) or decreasing H1a (lag range for judgement) can increase the probability of 1A event. On the contrary, contrary, the probability of 1A event can be decreased. decreased. 1A event supports the periodical report. In other words, the 1A event will be reported periodically (PrdRptInterval) until the event doesn’t meet the report condition or the reporting time reaches the allowable maximum value ( PrdRptAmount ) when UE detects the reporting range meeting quality standard of 1A event.

Chapter 7

Control parameter switch

1A event won’t be reported when the number of cell in the active set reaches certain RptDeactThr ) due to the limitation of number of active set. threshold ( RptDeactThr

2.

Event 1B

Event 1B means that the quality of certain cell in the active set is bad with the related cell deleted from active set when receiving 1B event. UE will report 1B to RNC when the cell enters into the reporting range of the following formula.

⎛ N

10 ⋅ LogM Old + CIO Old ≤ W ⋅ 10 ⋅ Log ⎜⎜

A

∑M

⎝ i =1

i

⎞ ⎟⎟ + (1 − W) ⋅10 ⋅ LogM Best − (R 1b + H 1b /2) ⎠

In which: The reporting range of R1b 1B event is used for controlling the difficulty level of cell’s RptRange). being deleted from active set ( RptRange

The report lag of H of H 1b 1b 1B event is used for controlling the difficulty level of cell’s being deleted from active set ( Hysteresis (Intra)). M Old Old is the measurement of cell outside the active set to be evaluated. CIOOld is the offset of cell outside the active set compared to other cell ( CellIndivOffset (utranCell). M i is the mean value of other cell excluding the best cell in the active set. N A is the number of other cell excluding the best cell in the active set. M Best is the measurement of the best cell for the active set. W is used for the weighting proportion (W ) of the best cell and other cell in the active set for the evaluation criterion.


3.

Event 1C

Event 1C means that the quality of certain cell outside the active set is better than the quality of certain cell inside the active set. The related cell outside the active set can be used to replace the cell inside the active set when receiving 1C event to get better macro diversity. diversity. UE will report 1C to RNC when the cell meets the formula below.

10 ⋅ LogM New + CIO New ≥ 10 ⋅ LogM InAS + CIO InAS + H1c /2 In which: The report lag of H of H 1c cell’s being 1c 1C event is used for controlling the difficulty level of cell’s replaced from active set ( Hysteresis (Intra)). M New is the measurement of cell outside the active set to be evaluated. M InAS is the cell with the worst quality in the active set. CIO New is the offset of worst cell inside the active set compared to other cell (CellIndivOffset (utranCell). (utranCell). CIO InAS is the offset of the cell outside the active set to be evaluated compared to other cell (CellIndivOffset (utranRelation)). (utranRelation)).

Chapter 7

4.


Event 1D

Event 1D means that the quality of certain cell inside the active set or outside the active set is better than the quality of the best cell in the current active set. In other words, the best cell of inter-frequency inter-frequency has changed. The soft adding (the reported 1D event of the cell outside active set and the number of link inside the active don’t reach maximum value) and soft replacement (the reported 1D event of the cell outside active set and the number of link inside the active reach maximum value) or the change of serving cell (focusing on HS-DSCH/E-DCH channel) can be triggered when receiving 1D event. UE will report 1D to RNC when the cell meets the formula below. below.

10 ⋅ LogM NotBest + CIO NotBest ≥ 10 ⋅ LogMBest + CIO Best + H1d /2 In which: M NotBest is the measurement of cell inside or outside the active set to be evaluated. CIO NotBest is the offset of cell inside the active set to be evaluated compared to other cell (CellIndivOffset (utranCell) or the offset of cell outside the active set to be evaluated compared to other cell ( CellIndivOffset (utranRelation)). (utranRelation)). CIO Bes is the offset of cell inside the active set to be evaluated compared to other cell (CellIndivOffset (utranCell). (utranCell). M Best is the measurement of cell inside the active set to be evaluated.


H1d is the report lag l ag of 1d event (Hysteresis (Intra)).

From the formula it can be seen that enlarging R1d (lag range for judgement) can decrease the probability of 1D event. On the contrary, the probability of 1D event can be increased. Reporting Range Constant for Event 1A/1B 3GPP Name

Reporting Range Constant

3GPP Reference


Field Name

RptRange [MAX_INTRA_MEAS_EVENT [MAX_INTRA_MEAS_EVENT]] This parameter controls the triggering of 1a/1b event. The larger the parameter is, the easily 1a event triggers with the 1b event difficult to be triggered. On the contrary, 1a event is difficult to

Description

be triggered with 1b event easily triggering when the value decreases. MAX_INTRA_MEAS_EVENT

represents

the

maximum

number of the intra-frequency measure events. The value is 7. Description of data item of radio parameter message GUI Element Name Value Range

Reporting range of meeting event quality standard for 1a or 1b event (0..14.5)dB (0..14.5) dB step 0.5dB Periodic report parameter for the Ec/No measure: UE event report parameter for the Ec/No measure: [3, 5, 0, 0, 0, 0, 0]

Default Value

Periodic report parameter for the RSCP measure: UE event report parameter for the RSCP

measure: [6, 8, 8, 0, 0,

0, 0, 0] Detection set parameter for the CPICH Ec/No measure: [4] Detection set parameter for the CPICH RSCP measure: [7] Scope


Function

Handover Control (Inter-frequency (Inter-frequency Handover) This parameter is determined mainly according to the principle of the macro diversity "increase easily, decrease difficultly". In case that the new is not very poor, it is added to the macro


diversity. However, if it is poor, it is removed out of the macro diversity. According to this principle, it is easy to reach the state of maximum macro diversity. This is the same as reaching the maximum macro diversity gain. In this case, bad links can be removed out of the macro diversity through the processing of event 1c. For event 1a, the greater the parameter value is, the

Chapter 7

3GPP Name


Reporting Range Constant lower the determination threshold of the event 1a is, and the easier event 1a is triggered. For event 1b, the greater the parameter value is, the higher the determination determination threshold of event 1b is, the harder event 1b is triggered. The smaller the parameter value is, the harder event 1a is triggered, and the easier event 1b is triggered.

Weight for Event 1A/1B 3GPP Name

W

3GPP Reference


Field Name

W [MAX_INTRA_MEAS_EV [MAX_INTRA_MEAS_EVENT] ENT] This parameter determines the quality of event 1a/1b and indicates the weight in quality determination of a a cell with

Description

best signal quality. quality. The parameter is associated with the measure and event type. MAX_INTRA_MEAS_EVENT

represents

the

maximum

number of the intra-frequency measure events. The value is 7. Description of data item of radio parameter message GUI Element Name

Weight for Event 1A/1B

Value Range

(0.0..2.0) (0.0..2. 0) step 0.1 Periodic report parameter for the Ec/No measure: UE event report parameter for the Ec/No measure: [0.0 0.0 0.0 0.0 0.0 0.0 0.0]

Default Value


measure: [0.0 0.0 0.0

0.0 0.0 0.0 0.0] Detection set parameter for the CPICH Ec/No measure: [0.0] Detection set parameter for the CPICH RSCP measure: [0.0] Scope


Function

Handover Control (Inter-frequency Handover)


This parameter indicates the weight of the cell with best signal quality. Typically, the configuration is based on the cell with best signal quality quality..

Hysteresis 3GPP Name

Hysteresis

3GPP Reference


Field Name

Hysteresis[MAX_INTRA_MEAS_EVENT] Hysteresis[MAX_I NTRA_MEAS_EVENT]


3GPP Name

Hysteresis This parameter indicates whether the determination event satisfies the hysteresis of event triggering condition. It makes a difference between the triggered state and the trigger released state of an event. This parameter helps avoid the trigger state change in case of a small change.

Description

The greater the parameter value, the greater the threshold difference between the triggered state and the trigger released state of an event. This parameter is associated with the measure and event type. MAX_INTRA_MEAS_EVENT

represents

the

maximum


Hysteresis

Value Range

(0..7.5) dB step 0.5dB Periodic report parameter for the Ec/No measure: UE event report parameter for the Ec/No measure: [0, 0, 4, 4, 2, 2, 4]

Default Value


measure: [4, 4, 4, 6, 6,

4, 4, 6] Detection set parameter for the CPICH Ec/No measure: [2] Detection set parameter for the CPICH RSCP measure: [6] Scope


Function

Handover Control (Inter-frequency (Inter-frequency Handover) This parameter indicates the switching Determination hysteresis for event 1a/1b/1c, and act on the determination of triggering of event 1a/1b/1c. When you determine this parameter, you should ensure that a small change of the signal will not trigger event reporting of event 1a/1b and ensure timely triggering of event


1c/1d. The greater the parameter value is, the harder event 1a/1b/1c/1d is triggered; the smaller the parameter value is, the easier event 1a/1b/1c/1d is triggered. For event 1a and event 1b, typically, a smaller value is configured to reflect signal change as soon as possible. For event 1c and event 1d, a greater value is preferred. preferred. Otherwise, toggle switching occurs. Also, the parameter value value cannot be to large; otherwise, otherwise, switching will be delayed, and therefore serious call drop situation occurs.

Reporting Deactivation Threshold for Event 1A

Chapter 7

3GPP Name

Reporting deactivation deactivatio n threshold

3GPP Reference


Field Name

RptDeactThr[MAX_INTRA_MEAS_EVE RptDeactThr[ MAX_INTRA_MEAS_EVENT] NT]


This parameter indicates the maximum number of cells allowed in the active set. When the UE detects that the measurement result of a active set satisfied the threshold for determining Description

event 1a, it first needs to determine whether the number of cells in the current set is smaller than or equal to the parameter value. If yes, event 1a is triggered; otherwise, event 1a is not triggered. MAX_INTRA_MEAS_EVENT

represents

the

maximum


Maximum number of allowable cell in the active cell.

Value Range

(0, 1, 2, 3, 4, 5, 6, 7) This parameter should be configured only for event 1a. Periodic report parameter for the Ec/No measure: UE event report parameter for the Ec/No measure: [2, -, -, -, -, -, -]

Default Value

Periodic report parameter for the RSCP measure: UE event report parameter for the RSCP measure: [2, -, -, -, -, -, -] Detection set parameter for the CPICH Ec/No measure: [6] Detection set parameter for the CPICH RSCP measure: [6]

Scope


Function

Handover Control (Inter-frequency (Inter-frequency Handover) The size of the active set is restricted. When the number of cells in the active set reaches a threshold ( RptDeactThr ), ), event 1a is

Recommended

no longer reported. However, the macro diversity gain obtained

Configuration

from the number of links in the active set does not follow linear increase. Typically, when the number of macro diversity links is set to 3, an ideal gain is obtained.

Replacement Activation Threshold for Event 1C and 1J 3GPP Name

Replacement activation threshold

3GPP Reference


Field Name

RplcActThr[MAX_INTRA_MEAS_EVENT] RplcActThr[MAX_I NTRA_MEAS_EVENT] This parameter indicates the minimum number of cells allowed

Description

in the active set in the event that event 1c is triggered, or indicates the minimum number of cells allowed in the active


3GPP Name

Replacement activation threshold E-DCH set in the event that event 1j is triggered. When the UE detects that the measurement result of a active set satisfied the threshold for determining event 1c/1j, it first needs to determine whether the number of cells in the current set is smaller than the parameter value. If yes, event 1c/1j is not triggered. If the parameter value value is 0, it is invalid. invalid. MAX_INTRA_MEAS_EVENT

represents

the

maximum


Minimum number of allowable cell in the active cell.

Value Range

(0, 1, 2, 3, 4, 5, 6, 7) This parameter should be configured only for event 1c and event 1j. Periodic report parameter for the Ec/No measure: UE event report parameter for the Ec/No measure: [-, -, 3, -, -, -,

Default Value

3] Periodic report parameter for the RSCP measure: UE event report parameter for the RSCP

measure: [-, -, 3, -, -,

-, 3] Detection set parameter for the CPICH Ec/No measure: [-] Detection set parameter for the CPICH RSCP measure: [-] Scope


Function

Handover Control (Inter-frequency (Inter-frequency Handover) To ensure the switching of macro diversity gain, event 1c is


allowed to report only when the number of cells in the active set reaches a threshold ( RplcActThr ). ). In other words, typically, event 1c is triggered as an replacement in the event that the active set is full.

Time to Trigger 3GPP Name

Time to trigger

3GPP Reference


Field Name

TrigTime[MAX_INTRA_MEAS_EVENT] This parameter indicates the time difference between monitored event occurrence and event reporting. An event is triggered and

Description

reported only when the event is detected and the condition for triggering the event is always satisfied during the trigger period indicated by the parameter.

Chapter 7

3GPP Name


Time to trigger The larger the value is, the stricter the trigger of the event is determined. However, the time length should be set according to the actual requirement. This is because a larger time affects the communication quality. MAX_INTRA_MEAS_EVENT

represents

the

maximum

number of the intra-frequency measure events. The value is 7. Description of data item of radio parameter message GUI Element Name Value Range

Time to trigger (0, 10, 20, 40, 60, 80, 100, 120, 160, 200, 240, 320, 640, 1280, 2560, 5000) ms Periodic report parameter for the Ec/No measure: UE event report parameter for the Ec/No measure: [200, 640, 320, 320, 200, 200,

320] ms

Periodic report parameter for the RSCP measure: Default Value

UE event report parameter for the RSCP 200,

measure: [200, 200,

200, 200, 200, 200] ms

Detection set parameter for the CPICH Ec/No measure: [200] ms Detection set parameter for the CPICH RSCP measure: [200] ms Scope


Function

Handover Control (Inter-frequency (Inter-frequency Handover) This parameter is determined in view of sudden signal change. If the signal quality of a cell becomes unstable, and therefore the related event is triggered, switching processing might be invalid in the meantime, and call drop might occur in case that the situation is serious. To avoid this situation, in the preset time


period, an event is reported to UTRAN only when the signal quality always meets the requirement. This ensures the effectiveness of switching. The greater the parameter value is, the harder event 1a/1b/1c/1d is triggered; the smaller the parameter value is, the easier event 1a/1b/1c/1d 1a/1b/1c/1d is triggered. However, the parameter value must be greater than the intra-frequency periodic measurement time 200 ms. Otherwise, the parameter configuration is meaningless.

Amount of Reporting for Event 1A/1B/1C/1J 3GPP Name

Amount of reporting

3GPP Reference



3GPP Name

Amount of reporting

Field Name

EvtRptAmount[MAX_INTRA_MEAS_EVENT EvtRptAmount[MAX_I NTRA_MEAS_EVENT]] This parameter indicates the maximum number of measurement reports after event 1a/1b/1c/1j is triggered (because event 1a/1b/1c/1j is periodically reported after triggered). When the event is triggered, the UE reports the measurement result according to the reporting interval. If the amount of reporting

Description

exceeds the parameter value, the UE stops reporting the measurement result. If the determination result indicates that event 1a/1b/1c/1j stops, even if the amount of reporting still satisfies the parameter value, the UE will also stop reporting the measurement result. MAX_INTRA_MEAS_EVENT

represents

the

maximum


Amount of Reporting for Event 1A/1B/1C/1J

Value Range

(1, 2, 4, 8, 16, 32, 64, Infinity) This parameter should be configured only for event 1a, 1c, and 1j. Periodic report parameter for the Ec/No measure: UE event report parameter for the Ec/No measure: [4, -, 4, -, -,

Default Value

-, 4] Periodic report parameter for the RSCP measure: UE event report parameter for the RSCP

measure: [4, -, 4, -, -,

-, 4] Detection set parameter for the CPICH Ec/No measure: [1] Detection set parameter for the CPICH RSCP measure: [1] Scope


Function

Handover Control (Inter-frequency (Inter-frequency Handover) To ensure event reporting reliability, periodic reporting is used


after the event is triggered. However, considering the flow of the air interface, frequent and excessive reporting should be avoided. Therefore, the reporting period and amount should be restricted. Typically, use the default settings.

Reporting Interval for Event 1A/1B /1C/1J 3GPP Name

Reporting interval

3GPP Reference


Field Name

EvtRptInterval[MAX_INTRA_MEAS_E EvtRptInter val[MAX_INTRA_MEAS_EVENT] VENT]

Chapter 7

3GPP Name


Reporting interval This parameter indicates the periodic reporting interval of the measurement result after event 1a/1b/1c/1j is triggered (because event 1a/1b/1c/1j is periodically reported after triggered). When the event is triggered, the UE reports the measurement result according to the reporting interval. If the amount of reporting

Description

exceeds the parameter value, the UE stops reporting the measurement result. If the determination result indicates that event 1a/1b/1c/1j stops, even if the amount of reporting still satisfies the parameter value, the UE will also stop reporting the measurement result. MAX_INTRA_MEAS_EVENT

represents

the

maximum


Reporting Interval for Event 1A/1B /1C/1J

Value Range

(0, 250, 500, 1000, 2000, 4000, 8000, 16000) ms This parameter should be configured only for event 1a, 1c, and 1j. Periodic report parameter for the Ec/No measure: UE event report parameter for the Ec/No measure: [2000, -, 2000, -, -, -, 2000]ms

Default Value

Periodic report parameter for the RSCP measure: UE event report parameter for the RSCP measure: [2000, -, 2000, -, -, -, 2000]ms Detection set parameter for the CPICH Ec/No measure: [2000]ms Detection set parameter for the CPICH RSCP measure: [2000]ms

Scope


Function

Handover Control (Inter-frequency (Inter-frequency Handover) To ensure event reporting reliability, periodic reporting is used


after the event is triggered. However, considering the flow of the air interface, frequent and excessive reporting should be avoided. Therefore, the reporting period and amount should be restricted. Typically, use the default settings.

Cell Individual Offset 3GPP Name

Cell Individual Offset

3GPP Reference



3GPP Name

Cell Individual Offset

Field Name

CellIndivOffset This parameter indicates the cell individual offset. An offset is allocated for each monitored cell. The offset can be positive or negative. The offset should be added to the measure before the UE evaluates whether an event has occurred. Using a positive offset, the number of measurement reports sent by the UE like

Description

PCPICH is x dB better than the actual value. Similarly, a negative offset can be used for CPICH. In this case, the reporting of PCPICH is restricted. Using the cell individual offset, the related cell will possibly (or at least temporarily) work as the switched target cell or be removed from the active set.

Description of data item of radio parameter message GUI Element Name Value Range Default Value Scope Function

Cell Individual Offset OMCR: (-10..10) dB step 0.5 RNC:D= (P+10)*2,0..40 0dB UTRAN Cell, GSM Neighboring Cell, UTRAN Neighboring Cell Mobility Management This parameter indicates the individual characteristics of the measured cell. You can use the same set of switching configuration parameters on the entire network, and then use CellIndivOffset to show the difference between cells. For


example, you can set a greater value of CellIndivOffset for the environment (such as corner) requiring quick switching for easier switching, and you can set a smaller value for the environment that does not require quick switching for harder switching. This parameter should be customized for some special cells according to the specific situation of the radio environment.

7.2 Basic principle of inter-frequency switch The inter-frequency refers to that UE switches to another frequency point from one frequency point of UTRAN network. The purpose of inter-frequency is to ensure the service continuity and load sharing. Ensuring the service continuity is based on the switch of inter-frequency measurement. The load sharing of inter-frequency inter-frequency is based on

Chapter 7


the blind switch of coverage or inclusion relation. The background of inter-frequency switch triggered by load sharing includes load balancing and load control. The evaluation criterion for carrier wave of intra-frequency: intra-frequency: Q frequencyj = 10 ⋅ LogM frequency j

⎛ N ⎞ = W j ⋅ 10 ⋅ Log ⎜⎜ ∑ Mi j ⎟⎟ + (1 − W j ) ⋅ 10 ⋅ LogM Best j ⎝ i =1 ⎠ A j

In which: Q frequency j is the (virtual) active set quality of J carrier wave, namely the measuring result of J carrier wave (dB for Ec/No, dBm for RSCP). M frequency j is the measuring physical value of (virtual) active set for J carrier wave (ratio (ratio for Ec/No, mW for RSCP). M i j is the measuring physical value of I cell for J carrier. N A j is the cell number in the (virtual) active set for J carrier (excluding the best cell). M Best j is the measuring result of the bset cell in the (virtual) active set for J carrier. W j is the weighting of the best cell in the (virtual) active set during the process of carrier wave measuring ( WnoUsed or or Wused) The definition and handling process of event for inter-frequency are as follows: 1.

Event 2A

2A: the best carrier frequency is changed. This event is used for the determination of inter-frequency switch for RNC. The compression mode needs to be started when UE measures and reports the event.

Q NotBest ≥ Q Best + H 2a /2 In which: Q NotBest is the measuring result of current non-best carrier wave. Q Best is the measuring result of current best carrier wave. H2a is the delay parameter of switch determination for 2A event ( Hysteresis (Inter))

2.

Event 2B

2B: the quality of working carrier frequency is lower than a threshold and the quality of non-working carrier frequency is higher than a threshold. This event is used for the


determination of inter-frequency switch for RNC. The compression mode needs to be started when UE measures and reports this event.

QNon used ≥ TNon used 2b + H2b /2 And Q Used ≤ TUsed 2b − H 2b /2 In which: Q Non used is the measuring result of current non-using carrier wave. TNon used 2b is the absolute threshold of good qality of non-using carrier wave for 2b

event determination (ThreshNoUsedFreq). H2b is the delay parameter of 2b event determination ( Hysteresis (Inter)).

QUsed is the measuring result of current used carrier frequency. T Used Used 2b is the absolute threshold of bad qality of non-using carrier wave of using carrier wave for 2b event determination ( ThreshUsedFreq). 3.

Event 2C

2C: the quality of non-working carrier frequency is higher than a threshold. This event is used for the determination of inter-frequency switch for RNC. The compression mode needs to be started when UE measures and reports this event.

Q Non used ≥ T Non used 2c + H 2c /2 In which: Q Non used is the measuring result of current non-using carrier wave. TNon used 2c b is the absolute threshold of good qality of non-using carrier wave for 2c

event determination (ThreshNoUsedFreq). H2c is the delay parameter of 2c event determination ( Hysteresis (Inter)).

4.

Event 2D

2D: the quality of working carrier frequency is lower than a threshold. This event measures the signal quality of current using carrier frequency, which doesn’t need to start compression mode. However, this event is used for triggering event of 2A/2B/2C measurement by starting compression mode.

Q Used ≤ TUsed 2d − H 2d /2 In which:

Chapter 7


QUsed is the measuring result of current using carrier wave. T Used Used

2b

is the absolute threshold of bad qality of using carrier wave for 2d event

determination (ThreshUsedFreq). H2b is the delay parameter of 2d event determination ( Hysteresis (Inter)).

5.

Event 2E

2E: the quality of non-working carrier frequency is lower than a threshold. This event is used for judging signal quality of non-working carrier frequency, which can be used as the triggering event of triggering intersystem switch.

QNon used ≤ TNon used 2e − H2e /2 In which: Q Non used is the measuring result of current non-using carrier wave. TNon used 2e is the absolute threshold of good qality of non-using carrier wave for 2e

event determination (ThreshNoUsedFreq) H 2e is the delay parameter of 2e event determination ( Hysteresis). 6.

Event 2F

2F: the quality of working carrier frequency is higher than a threshold. This event measures the signal quality of current using carrier frequency, which doesn’t need to start compression mode. However, this event is used for triggering event of closing compression mode when the current started compression mode measures 2A/2B/2C.

QUsed ≥ TUsed 2f + H2f /2 In which: QUsed is the measuring result of current using carrier wave. TUsed

2f is

the absolute threshold of bad qality of using carrier wave for 2f event

determination (ThreshUsedFreq). Hfe is the delay parameter of 2f event determination ( Hysteresis (Inter)).

Introduction to compression mode: There are two methods for the generation of compression mode frame: 1.

Halving of SF


The halving of SF is fulfilled through enlarging the empty bandwidth of traffic. In this way, part of the slot time in the same radio frame can be specially used for measuring inter-frequency and intersystem and part of the slot time can be specially used for data bit transmission. The transmission strategy of SF halving is generally used for the traffic with high requirement for time delay and minimal guarantee demand for data rate, such as the PS data traffic of CS and S. 2.

High-level scheduling

The substance of high-level scheduling is that the high-level regulates the rate of data transmission. Part of the slot time in the same radio frame can be specially used for measuring inter-frequency and intersystem and part of the slot time can be specially used for data bit transmission on condition that the empty bandwidth doesn’t change. It is generally used for non-real-time traffic with low requirement for time delay, such as the PS data traffic of I/B. The GAP used for sending/receiving (measurement) can be placed in one radio frame or between two radio frames when the compression mode is started. It is shown in the figure below: Transmission gap

#0

#Nfirst-1

Radio frame

#Nlast+1

#14

(1) Single-frame method

Transmission gap

First radio frame

#0

#Nfirst-1

#Nlast+1

(2) Double-frame method

Position of transmission gap (TG) Sequence of compression mode:

Second radio frame

#14

Chapter 7


#1

#2

#3

#4

#5

#TGPRC

TG pattern 1

TG patt patter ern n 1



TG pattern 1

TG pattern 1

TG pattern 1

Transmission

Transmission

gap 1

gap 2

TGL1

TGL2

TGSN

TGD

TGPL1

Absolute Threshold of the Quality of the Currently Used Frequency for 2B/2D/2F 3GPP Name

Threshold used frequency

3GPP Reference


Field Name

ThreshUsedFreq[MAX_INTER_MEAS_E ThreshUsedFre q[MAX_INTER_MEAS_EVENT] VENT] This parameter indicates the absolute threshold (for quality determination of the current carrier frequency) configured for

Description

event 2b/2d/2f. MAX_INTER_MEAS_EVENT

represents

the

maximum

number of the inter-frequency measure events. The value is 6. Description of data item of radio parameter message GUI Element Name

Value Range

Absolute Threshold for Quality Determination of the Used Carrier Frequency in Event 2b/2d/2f CPICH RSCP: (-115..-25 ) dBm step 1dBm CPICH Ec/No: (-24..0) dB step 1dB Periodic report parameter for the CPICH Ec/No measure: UE intra-frequency event report parameter for the CPICH Ec/No measure: [-24, -13,

Default Value

-24, -13, -24, -5] B

UE periodic event report parameter for the CPICH RSCP measure: UE intra-frequency event report parameter for the CPICH RSCP measure: [-115, [-115, -95,

-115, -95, -115, -80] dBm

Scope


Function



This parameter is determined in view of movement continuity and guarantee of subscriber experience. In case that the carrier frequency is bad, compression mode and intra-frequency


3GPP Name

Threshold used frequency measurement should be started for switching to avoid call drop or poor QoS. For event 2B (smaller than the threshold), the greater the parameter value is, the easier intra-frequency intra-frequency switching is triggered; the smaller the parameter value is, the harder intra-frequency intra-frequency switching is triggered. For event 2D (smaller than the threshold), the greater the parameter value is, the easier compression compression mode is started for intra-frequency and inter-system measurement; the smaller the parameter value value is, the harder harder compression compression mode mode is started. For event 2F (greater than the threshold), the greater the parameter value is, the harder compression compression mode is closed to stop intra-frequency and inter-system measurement; the smaller the parameter value is, the easier compression mode is closed to stop intra-frequency and inter-system measurement.

Weight Weight of the Currently Used Frequency for 2A/2B/2D/2F 3GPP Name

W used frequency

3GPP Reference


Field Name

Wused[MAX_INTER_MEAS_EVENT] Wused[MAX_INTER_MEAS_EVE NT] This parameter is used for quality determination of the current used carrier frequency, and indicates the weight (for event 2a,

Description

2b, 2d, or 2f) of the RNC with best signal quality. It is associated with the measure and event type. MAX_INTER_MEAS_EVENT

represents

the

maximum


Weight of the Currently Used Frequency for 2A/2B/2D/2F

Value Range

(0.0..2.0 (0.0..2. 0 ) step 0.1 Periodic report parameter for the CPICH Ec/No measure: UE intra-frequency event report parameter for the CPICH Ec/No measure: [0.0,

Default Value

0.0,

0.0, 0.0, 0.0, 0.0]

UE periodic event report parameter for the CPICH RSCP measure: UE intra-frequency event report parameter for the CPICH RSCP measure: [0.0,

0.0,

0.0, 0.0, 0.0, 0.0]

Scope


Function


Chapter 7

3GPP Name Recommended Configuration


W used frequency -

Hysteresis 3GPP Name

Hysteresis

3GPP Reference


Field Name

Hysteresis[MAX_INTER_MEAS_EVEN Hysteresis[MAX_ INTER_MEAS_EVENT] T] This parameter indicates whether the determination event satisfies the hysteresis of event triggering condition. It makes a difference between the triggered state and the trigger released

Description

state of an event. This parameter helps avoid the trigger state change in case of a small change. This parameter varies with the event and can be set to different values. MAX_INTER_MEAS_EVENT

represents

the

maximum


Hysteresis

Value Range

(0, 0.5..14.5) dB step 0.5dB Periodic report parameter for the CPICH Ec/No measure: UE intra-frequency event report parameter for the CPICH Ec/No measure: [4, 4, 4, 4, 4, 4] dB

Default Value

UE periodic event report parameter for the CPICH RSCP measure: UE intra-frequency event report parameter for the CPICH RSCP measure: [4, 4, 4, 4, 4, 4]dB

Scope


Function



The greater the parameter value is, the harder event 2A/2B/2C/2D/2E/2F is triggered; the smaller the parameter value is, the easier event 2A/2B/2C/2D/2E/2F is triggered

Time to Trigger 3GPP Name

Time to trigger

3GPP Reference


Field Name

TrigTime[MAX_INTER_MEAS_EVENT] TrigTime[MAX_INTER_MEAS _EVENT] This parameter indicates the time difference between monitored

Description

event occurrence and event reporting. An event is triggered and reported only when the event is detected and the condition for


3GPP Name

Time to trigger triggering the event is always satisfied during the trigger period indicated by the parameter. The larger the value is, the stricter the trigger of the event is determined. However, the time length should be set according to the actual requirement. This is because a larger time affects the communication communication quality. quality. MAX_INTER_MEAS_EVENT

represents

the

maximum

number of the inter-frequency measure events. The value is 6. Description of data item of radio parameter message GUI Element Name Value Range

Time to Trigger (0, 10, 20, 40, 60, 80, 100, 120, 160, 200, 240, 320, 640, 1280, 2560, 5000) ms Periodic report parameter for the CPICH Ec/No measure: UE intra-frequency event report parameter for the CPICH Ec/No measure: [100, 100, 100, 640, 100, 640]

Default Value

UE periodic event report parameter for the CPICH RSCP measure: UE intra-frequency event report parameter for the CPICH RSCP measure: [100, 100, 100, 640, 100, 640]

Scope


Function

Handover Control (Inter-frequency Handover) This parameter indicates the time difference between monitored event occurrence and event reporting. In other words, during the preset period, an event that satisfies the triggering of event 2A/2B/2C/2D/2E/2F is reported to UTRAN. This parameter is determined in view of sudden signal change. If the signal quality of a cell becomes unstable with great changes, and


therefore the related event is triggered, switching processing might be invalid in the meantime, and call drop might occur in case that the situation is serious. To avoid this situation, in the preset time period, an event is reported to UTRAN only when the signal quality always meets the requirement. This ensures the effectiveness of switching. The greater the parameter value is, the harder event 2A/2B/2C/2D/2E/2F is triggered; the smaller

the

parameter

value

is,

the

easier

event

2A/2B/2C/2D/2E/2F 2A/2B/2C/2D/2E/2F is triggered. triggered.

Absolute Threshold of the Quality of the Non-used Frequency for 2A/2B/2C/2E 3GPP Name

Threshold non used frequency

3GPP Reference


Chapter 7

3GPP Name

Threshold non used frequency

Field Name

ThreshNoUsedFreq[MAX_INTER_MEAS_E ThreshNoUsedFr eq[MAX_INTER_MEAS_EVENT] VENT]


This parameter indicates the absolute threshold (for quality determination Description

of

the

current

unused

carrier

frequency)

configured for event 2a/2b/2c/2e. MAX_INTER_MEAS_EVENT

represents

the

maximum


Value Range

Absolute Threshold of the Quality of the Non-used Frequency for 2A/2B/2C/2E CPICH RSCP: (-115..-25 )dBm step 1dBm CPICH Ec/No: (-24..0) dB step 1dB Periodic report parameter for the CPICH Ec/No measure: UE intra-frequency event report parameter for the CPICH Ec/No measure: [-24, -5, -5, -24, -13, -24] dB

Default Value

UE periodic event report parameter for the CPICH RSCP measure: UE intra-frequency event report parameter for the CPICH RSCP measure: [-115, -50, -50, -115, -95, -115] dBm

Scope


Function

Handover Control (Inter-frequency Handover) This parameter is determined in view of movement continuity and guarantee of subscriber experience. In case that the local carrier frequency is bad, and the quality of the intra-frequency neighboring cell satisfies the condition, switching is determined to avoid call drop or poor QoS. For event 2B (greater than the threshold), the greater the parameter parameter value is, the harder intra-frequency intra-frequency switching is triggered; the smaller the parameter value is, the easier


intra-frequency intra-frequency switching is triggered. For event 2C (greater than the threshold), the greater the parameter parameter value is, the harder intra-frequency intra-frequency switching is triggered; the smaller the parameter value is, the easier intra-frequency intra-frequency switching is triggered. For event 2E (smaller than the threshold), the greater the parameter value is, the easier the intra-frequency measurement is stopped and inter-system measurement is started; the smaller the

parameter

value

is,

the

harder

the

intra-frequency

measurement is stopped and inter-system measurement is started.


Weight Weight of the Non-used Frequency for 2A/2B/2C/2E 3GPP Name

W non-used frequency

3GPP Reference


Field Name

WNoUsed[MAX_INTER_MEAS_EVENT] WNoUsed[MAX_INTER _MEAS_EVENT] This parameter is used for quality determination of the current unused carrier frequency, and indicates the weight (for event 2a, 2b, 2c, or 2e) of the RNC with best signal

Description

quality. It is associated with the measure and event type. MAX_INTER_MEAS_EVENT represents the maximum number of the inter-frequency measure events. The value is 6.


Weight of the Non-used Frequency for 2a/2b/2c/2e

Value Range

(0.0..2.0 (0.0..2. 0 ) step 0.1 Periodic report parameter for the CPICH Ec/No measure: UE intra-frequency event report parameter for the CPICH Ec/No measure: [0.0,

Default Value

0.0,

0.0, 0.0, 0.0, 0.0]

UE periodic event report parameter for the CPICH RSCP measure: UE intra-frequency event report parameter for the CPICH RSCP measure: [0.0,

0.0,

0.0, 0.0, 0.0, 0.0]

Scope


Function



-

7.3 7.3 Basic Basic princip le of int ersystem ersystem sw itch The intersystem refers to that UE switches to another radio access system from one radio access system. It focuses on that UE switches to GERAN system from UTRAN access system (switching GERAN system to UTRAN system is the policy of GERAN system). The purpose of intersystem is to ensure the service continuity and load sharing. Ensuring the service continuity is based on the switch of intersystem measurement. The load sharing of intersystem is based on the blind switch of coverage or inclusion relation. The background of intersystem switch triggered by load sharing includes load balancing and load control. control. The definition and handling process of event for intersystem switch are as follows:

Chapter 7

1.


Event 3A

3A: the quality of current used UTRAN carrier frequency is lower than a threshold and the quality of other radio system is higher than a threshold. It is used for the determination of intersystem switch.

Q Used ≤ TUsed − H 3a /2 And MOther

RAT

+ CIOOther RAT ≥ TOther

RAT

+ H3a /2

In which: QUsed is the quality evaluation of operating frequency for UTRAN. T Used Used is the absolute threshold of current operating frequency ( Thresh ). H3a is the delay parameter of 3A event determination (Hysteresis (Rat)).

M Other Other RAT is the quality measuring result of other systems. CIOOther RAT is the quality offset of other system cells (CellIndivOffset (gsmRelation)). (gsmRelation)). TOther RAT the absolute threshold of good qality for other systems ( ThreshSys).

2.

Event 3C

3C: the quality of other radio systems is higher than a threshold, which can be used for the determination of intersystem.

MOther RAT + CIOOther RAT ≥ TOther RAT + H3c /2 In which: M Other Other RAT is the quality measuring result of other systems. CIOOther RAT is the quality offset of other system cells (CellIndivOffset (gsmRelation)). TOther RAT the absolute threshold of good qality for other systems ( ThreshSys). H3c is the delay parameter of 3C event determination (Hysteresis (Rat)).

In the event determination of intersystem, when the carrier wave meets the reporting range or threshold of certain event, the event can be reported by the meeting of lasting a period of time (TrigTime (Rat)) in order to avoid the intra-frequency event misdeclaration caused by fluctuation of carrier wave quality. quality. Absolute Threshold of the Quality of UTRAN Cell for 3A 3GPP Name

Threshold own system

3GPP Reference



3GPP Name

Threshold own system

Field Name

Thresh[MAX_RAT_MEAS_EVENT] This parameter indicates the absolute threshold that needs to be configured for the quality of the UTRAN cell in the event

Description

that the UE determines event 3a. The value range and unit are associated with the measure of the UTRAN cell. MAX_RAT_MEAS_EVENT represents the maximum number of the inter-system measure events. The value is 4.


Absolute Threshold of the Quality of UTRAN Cell for 3a CPICH RSCP: (-115..-25 )dBm step 1dBm CPICH Ec/No: (-24..0) dB step 1dB Periodic report parameter for the CPICH Ec/No local system measure: UE event report parameter for the CPICH Ec/No local system

Default Value

measure: [-6,

-24, -24, -24]

Periodic report parameter for the CPICH RSCP local system measure: UE event report parameter for the CPICH RSCP local system measure: [-95,

-115, -115, -115]

Scope


Function

Handover Control (Inter-RAT Handover) This parameter is determined in view of movement continuity and guarantee of subscriber experience. In case that the local carrier frequency is bad, and the measured quality of the

Recommended

inter-system neighboring cell is better, inter-system switching

Configuration

should be carried out to avoid call drop or poor QoS. The greater the parameter value is, the easier inter-system switching is triggered; the smaller the parameter value is, the harder inter-system switching is triggered.

Weight of the UTRAN System for 3A 3GPP Name

W

3GPP Reference


Field Name

W[MAX_RAT_MEAS_EVENT] This parameter is used for quality determination of the quality

Description

of the UTRAN system in inter-system measurement, and indicates the weight of the best cell in the determination of event 3a.

Chapter 7

3GPP Name


W MAX_RAT_MEAS_EVENT represents the maximum number of the inter-system measure events. The value is 4.


Weight of the UTRAN System for 3a

Value Range

(0.0..2.0) (0.0..2. 0) step 0.1 Periodic report parameter for the CPICH Ec/No local system measure: UE event report parameter for the CPICH Ec/No local system

Default Value

measure: [0,

-,

-,

-]

Periodic report parameter for the CPICH RSCP local system measure: UE event report parameter for the CPICH RSCP local system measure: [0,

-,

-,

-]

Scope


Function

Handover Control (Inter-RAT Handover)


-

Absolute Threshold of the Quality of Other RAT for 3A/3B/3C 3GPP Name

Threshold other system

3GPP Reference


Field Name

ThreshSys[MAX_RAT_MEAS_EVENT] This parameter indicates the absolute threshold configured for event 3a/3b/3c for determination of the quality of other systems. The value range and unit are related to the measurement amount of other system cell. Currently, the

Description

measure can only be GSM Carrier RSSI of the GSM system, corresponding to CPICH RSCP of the system. Therefore, the value range and unit of the parameter correspond to CPICH RSCP. MAX_RAT_MEAS_EVENT represents the maximum number of the inter-system measure events. The value is 4.


Default Value

Absolute Threshold of the Quality of Other RAT RAT for 3a/3b/3c CPICH RSCP: (-115..-25 ) dBm step 1dBm CPICH Ec/No: (-24..0) dB step 1dB Periodic report parameter for the CPICH Ec/No local system measure: -


3GPP Name

Threshold other system UE event report parameter for the CPICH Ec/No local system measure: [-90,

-95,

-95,

-115] dBm

Periodic report parameter for the CPICH RSCP local system measure: UE event report parameter for the CPICH RSCP local system measure: [-90,

-95,

-95,

-115] dBm

Scope


Function

Handover Control (Inter-RAT Handover) This parameter is determined in view of movement continuity and guarantee of subscriber experience. In case that the local carrier frequency is bad, and the measured quality of the

Recommended

inter-system neighboring cell is better, inter-system switching

Configuration

should be carried out to avoid call drop or poor QoS. For event 3A/3C, the greater the parameter value is, the harder inter-system switching is triggered; the smaller the parameter value is, the easier inter-system switching is triggered.

Determination Hysteresis 3GPP Name

Determination Determinati on Hysteresis

3GPP Reference


Field Name

Hysteresis[MAX_RA Hysteresis[MAX_R AT_MEAS_EVENT] This parameter indicates whether the determination event satisfies the hysteresis of event triggering condition. It makes a difference between the triggered state and the trigger released state of an event. This parameter helps avoid the trigger state change in case of a small change.

Description

The greater the Hysteresis value is, the greater the threshold difference between the triggered state and the trigger released state of an event is. This parameter is associated with the measure and event type. MAX_RAT_MEAS_EVENT represents the maximum number of the inter-system measure events. The value is 4.


Determination Determinat ion Hysteresis

Value Range

(0, 0.5..7.5) dB step 0.5dB Periodic report parameter for the CPICH Ec/No local system

Default Value

measure: UE event report parameter for the CPICH Ec/No local system

Chapter 7

3GPP Name


Determination Determinati on Hysteresis measure: [4, 4, 2, 4] dB Periodic report parameter for the CPICH RSCP local system measure: UE event report parameter for the CPICH RSCP local system measure: [4, 4, 4, 4] dB

Scope


Function



The greater the parameter value is, the harder event 3A/3C is triggered; the smaller the parameter value is, the easier event 3A/3C is triggered.

Time Difference Between Event Occurrence and Event Reporting (Time to Trigger) 3GPP Name

Time to trigger

3GPP Reference


Field Name

TrigTime [MAX_RAT_MEAS_EVENT] [MAX_RAT_MEAS_EVENT] This parameter indicates the time difference between monitored event occurrence and event reporting. An event is triggered and reported only when the event is detected and the condition for

Description

triggering the event is satisfied during the trigger period indicated by the parameter. MAX_RAT_MEAS_EVENT is the maximum number of inter-system events. The value is 4.


Value Range

Time Difference Between Event Occurrence and Event Reporting (0, 10, 20, 40, 60, 80, 100, 120, 160, 200, 240, 320, 640, 1280, 2560, 5000) ms Periodic report parameter for the CPICH Ec/No local system measure: UE event report parameter for the CPICH Ec/No local system

Default Value

measure: [100, 100, 100, 100] ms Periodic report parameter for the CPICH RSCP local system measure: UE event report parameter for the CPICH RSCP local system measure: [100, 100, 100, 100] ms

Scope


Function



3GPP Name

Time to trigger This parameter is determined in view of sudden signal change. If the signal quality of a cell becomes unstable with great changes, and therefore the related event is triggered, switching

Recommended

processing might be invalid in the meantime, meantime, and call drop

Configuration

might occur in case that the situation is serious. To avoid this situation, in the preset time period, an event is reported to UTRAN only when the signal quality always meets the requirement. This ensures the effectiveness of switching.

ZTE - UMTS Radio Parameter

Recommend Documents