328701825-LTE908-ANR-Inter-RAT-Utran-Fully-UE-Based (1).pdf

24/10/2016

Description of LTE908: ANR InterRAT UTRAN Fully UEbased

LTE Radio Access, Rel. TDLTE 16, Operating Documentation, Issue 02 (HTML) > Features > Features from Previous Releases > LTE RL55TD, Feature Descriptions and Instructions > Descriptions of operability features > LTE908: ANR InterRAT UTRAN Fully UEbased

LTE908: ANR Inter RAT UTRAN Fully UE based Introduction to the feature The LTE908: ANR Inter-RAT UTRAN - Fully UE-based feature introduces a new mechanism for neighbor relations (NRs) between LTE and UTRAN cells. The LTE908: ANR Inter-RAT UTRAN - Fully UE-based feature currently covers only WCDMA UTRAN neighboring cells.

Benefits End-user benefits This feature provides to the end-user less call drops and better network quality as the neighbor configuration is more optimal and up to date. Operator benefits This feature provides the following benefits to the operator: The operator does not have to create UTRA cell NRs manually via O&M. The operator can configure UTRAN frequencies, for which neighboring UTRAN cells will be searched.

Requirements Hardware and software requirements

Table:

Hardware and software requirements

System release

Flexi Multiradio BTS

Flexi Multiradio 10 BTS

Flexi Multiradio 10 Indoor BTS

Flexi Zone Micro

RL55TD

TDLBTS5.0

TDLBTS5.0

TDLBTS5.0

OMS

UE

NetAct

MME

SAE GW

The UE should support ANR InterRAT UTRAN measurements

NetAct 15.2

Additional hardware requirements This feature requires no new or additional hardware.

Functional description The operator configures the UTRAN ANR profiles and provides target frequencies and other parameters for searching https://online.networks.nokia.com/pic/infocenterproxy/td16_P8HTML/index.jsp?tab=search&searchWord=Activate%20UEbased%20ANR%20for%20UTR…

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The operator configures the UTRAN ANR profiles and provides target frequencies and other parameters for searching new neighboring cells. The eNB autonomously creates NRs to UTRAN cells, using the ANR measurements at the connected UEs. Under certain conditions (for example, UE capabilities, UE inactivity, a number of neighbor relations below a pre-defined threshold) a serving cell asks connected UEs to detect unknown UTRA cells. Next, the UE, under certain conditions (for example, detected signal level of the UTRA cell to be resolved), reports the identity information of these cells to the eNB. The cells' identity information sent to the eNB is as follows: physical cell ID (PCI) cell identity (cell id) public land mobile network (PLMN) ID location area code (LAC) routing area code (RAC) The UE provides the cell data to the eNB via air interface. When the eNB gets all needed UTRA cell data from the UE, it stores it in the database. This information is used for related mobility procedures. When the ANR report from the UE is not complete (LAC and/or RAC is missing), the eNB treats the PCI as not resolved. The appropriate performance counter for incomplete CGI resolutions increases, and the operator is informed about not successful ANR resolutions. The operator checks the relevant PM counters, and then he can either change ANR blacklisting, or check and correct UTRAN configuration. ANR measurements The LTE908: ANR Inter-RAT UTRAN - Fully UE-based feature uses the following UTRAN ANR measurements: UTRA ReportStrongestCellForSON - used to detect new unknown UTRA PCIs. When a new PCI is reported by the UE, the eNB adds this PCI to the respective unknown PCI list of the eNB cell where that UE is connected. UTRA ReportStrongestCells - activated when the UE becomes inactive. This measurement shows which of the unknown PCIs collected via UTRA ReportStrongestCellForSon are seen by this UE. UTRA ReportCGI - activated after the UTRA ReportStrongestCells measurement report. It is used to resolve the cell identities of the strongest reported unknown PCI. If the ReportCGI measurement report contains complete information (UTRAN-CGI, PLMN, LAC, and RAC) about the UTRA cell, the resolved UTRA cell is stored in the eNB database (LNADJW). A new NR (LNRELW) is configured between that UTRA cell and the eNB cell, which receives the ReportCGI measurement report. Detection and resolution of an unknown UTRAN cell implies the exchange of the following messages and procedures:

Figure:

Detection and resolution of an unknown UTRAN cell with UEbased ANR

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System impact Interdependencies between features LTE42: DRX in RRC connected mode The LTE908: ANR Inter-RAT UTRAN - Fully UE-based feature needs the LTE42: DRX in RRC connected mode feature for the ReportCGI measurements. However, the LTE42: DRX in RRC connected mode feature's flag does not need to be set to true. LTE473: Extended DRX settings The LTE908: ANR Inter-RAT UTRAN - Fully UE-based feature introduces a new trigger for DRX activation/reconfiguration. The LTE473: Extended DRX settings feature can run in parallel to the LTE908: ANR Inter-RAT UTRAN - Fully UE-based feature without restrictions. LTE783: ANR InterRAT UTRAN To use the new-found UTRA NRs for mobility features, the operator can: activate the LTE783: ANR InterRAT UTRAN feature with a small number of neighbor cells to configure the UFFIM and LNHOW parameters manually set up the corresponding UFFIM and LNHOW instances LTE782: ANR Fully UE based, LTE556: ANR Intra-LTE, Inter-frequency - UE based Only one RAT ANR feature can work for a UE at one time. If several ANR features are active at the same time, there is a round robin selection of ANR features per RAT to be used for each UE. Impact on interfaces This feature impacts the following interfaces: https://online.networks.nokia.com/pic/infocenterproxy/td16_P8HTML/index.jsp?tab=search&searchWord=Activate%20UEbased%20ANR%20for%20UTR…

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This feature impacts the following interfaces:

KPI ID Counter ID Uu interface Full name

eNB to O&M interface

Counter name Abbreviated name

Managed KPI name Measurement object

Structure

Impact on network management tools This feature has no impact on network management tools. Impact on system performance and capacity This feature provides the end-user with less call drops and better network quality.

Management data Alarms There are no alarms related to this feature. Measurements and counters lists counters introduced with this feature.

Table:

New counters

Counter ID

Counter name

Measurement

M8008C12

Number of requested CGI reports for UTRAN

8008 LTE RRC (WBTS)

M8008C13

Number of successful CGI reports for UTRAN

8008 LTE RRC (WBTS)

M8008C14

Number of incomplete CGI reports for UTRAN

8008 LTE RRC (WBTS)

Key performance indicators lists existing key performance indicators related to this feature

Table:

Related existing key performance indicators

KPI ID

KPI name

LTE_5076b

EUTRAN incoming IP Traffic Error Ratio

Parameters lists parameters introduced with this feature.

Table:

Full name

New parameters

Abbreviated name

Managed object

Structure


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Full name

Abbreviated name

Managed object

Structure

ANR UTRA EcNo thresohld

anrUtraEcNoThres

ANRPRW

ANR UTRA RSCP threshold

anrUtraRscpThres

ANRPRW

Cells to apply list

cellsToApplyList

ANRPRW

Enable ANR profile

enableAnrProfile

ANRPRW

LNRELW default values

lnRelWDefaults

ANRPRW

Circuitswitched fallback with PS handover allowed

csfbPsHoAllowed

ANRPRW

lnRelWDefaults

PS handover allowed

psHoAllowed

ANRPRW

lnRelWDefaults

Single radio Voice call continuity allowed

srvccAllowed

ANRPRW

lnRelWDefaults

Limit for ANR created UTRAN neighbor relations

lnRelWLimitForAnr

ANRPRW

List of blacklisted PSCs

pscBlacklist

ANRPRW

Primary scrambling code

psc

ANRPRW

pscBlacklist

Last primary scrambling code of a range

pscLast

ANRPRW

pscBlacklist

Coding of RNC ID within UTRAN CI

rncIdCoding

ANRPRW

Alignment within UTRAN CI

rncIdAlignment

ANRPRW

rncIdCoding

RNC ID type

rncIdType

ANRPRW

rncIdCoding


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Full name Full name

Abbreviated name Abbreviated name

Managed Managed object Structure object

UTRAN carrier frequency

utraCarrierFreq

ANRPRW

Source of data

sourceOfData

LNADJW

Activate UEbased ANR for UTRAN

actUeBasedAnrUtran

LNBTS

ANR UTRA RSCFS timer

anrUtraTRSCFS

LNBTS

Minimum not activated UTRA reportStrongestCellsForSon

minNotActivatedUtraRSCFS

LNBTS

DRX profile 102

drxProfile102

LNCEL

DRX inactivity timer

drxInactivityT

LNCEL

drxProfile102

DRX long cycle

drxLongCycle

LNCEL

drxProfile102

DRX on duration timer

drxOnDuratT

LNCEL

drxProfile102

DRX profile index

drxProfileIndex

LNCEL

drxProfile102

DRX profile priority

drxProfilePriority

LNCEL

drxProfile102

DRX retransmission timer

drxRetransT

LNCEL

drxProfile102

lists existing parameters related to this feature.

Table:

Related existing parameters

Full name

Abbreviated name

Managed object

Target cell id

uTargetCid

LNADJW


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Target RNC id Full name

uTargetRncId Abbreviated name License control in network

Filtering coefficient used for cpich ecN0

filterCoefficientCpichEcn0

LNCEL

Filtering coefficient used for cpich RSCP

filterCoefficientCpichRscp

LNCEL

Filtering coefficient used for PCCPCHRSCP

filterCoefficientPccpchRscp

LNCEL

Target cell Id in UTRAN CGI of related neighbor cell

uTargetCid

LNRELW

Target RNC Id

uTargetRncId

LNRELW

BSW/ASW

element

LNADJW Managed object Activated by default

Sales information Table:

Sales information

BSW/ASW

License control in network element

Activated by default

ASW

SW Asset Monitoring

No

Id: DN09108269

© 2016 Nokia Solutions and Networks. All rights reserved.


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