05_RN28195EN20GLA0_BSS Radio Network Operation & Maintenance

BSS Radio Network Operation & Maintenance

BSS Radio Network Operation & Maintenance RG20 (BSS)

Soc Classification level 1 © Nokia Siemens Networks

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Objectives After this module the participants should be able to: • Explain basic BSS protocols and parameters: such as CCS7, SIGTRAN, LAC, CI, RAC and NCC (review) • Describe the differences between Frequency Hopping and Baseband Hopping technique (review) • Apply MML command to interrogate signalling and circuit switched traffic • Interrogate the radio network parameters and RNW objects with MML Commands • Use MML to modify and operate basic radio network parameter • Handling GSM and WCDMA adjacent cells


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Speech circuits

BSC GSWB

FR

Circuit Group Full Rate ETPCM-512

ET-512

TCSM

FR

TCPCM-2

FR

TCPCM-3

HS4 ETPCM-513

ET-513

TCPCM-1

TCPCM-1

MGW CCSPCM-0 CCSPCM-1 CCSPCM-2

CCSPCM-3

TCSM

Circuit Group HS4


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Refer to RG20 Documentation: BSC/TCSM descriptions\ Product description of Flexi BSC\ Functionality of the Flexi BSC

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CCS7 signalling

MSC

BSC

BSSAP

BSSAP

SCCP

SCCP

MTP


TCSM

MTP

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Refer to RG20 Documentation: BSC/TCSM descriptions\ Product description of Flexi BSC\ Interfaces relating to the Flexi BSC For more detailed information about CCS7 Signalling, see RG20 Documentation: Administer\ Common Channel Signalling (MTP, SCCP and TC) MTP: Transmits signalling data to a destination. The MTP consists of at least one signalling link, a signalling link set, and a signalling route set. SCCP: Two SCCP services are used in GSM: connectionless service and connectionoriented service. The SSCP uses the MTP’s services and offers its own services to the upper layers. BSSAP: The application part of the base station subsystem. The BSSAP consists of BSSMAP (BSS Management Part), for messages between BSC and MSC; and DTAP (Direct Transfer Application Part), for messages to and from the mobile station.

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CCS7 signalling - Rel.4

MSS

BSC

MGW

BSSAP

BSSAP

SCCP

SCCP

M3UA


M3UA | MTP

TCSM

MTP

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MGW acts as an MTP Signalling Transfer Point between BSC and MSS.

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CCS7 signalling MTP definitions: -Signalling Link -Signalling Linkset -Signalling Routeset


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A-Interface using SIGTRAN protocol stack BSC

MSS

BSSAP

BSSAP

SCCP

SCCP

M3UA

M3UA

SCTP

SCTP

IP

IP

SIGTRAN

Ethernet

Ethernet

SIGTRAN defines a standardized way of carrying any SS7 signalling over IP networks Soc Classification level 7 © Nokia Siemens Networks

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For more detailed information about SIGTRAN, see RG20 Documentation: Administer\ Signalling Transport over IP (M3UA and IUA)

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Stream Control Transmission Protocol ( SCTP) Services by SCTP: Application

SCTP

IP

• provides reliable data transfer between two IP end points • It offers acknowledged error-free non-duplicated transfer of datagrams (messages). • Detection of data corruption, loss of data and duplication of data is achieved by using checksums and sequence numbers. • A selective retransmission mechanism is applied to correct loss or corruption of data.

L2 L1 Soc Classification level 8 © Nokia Siemens Networks

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M3UA – MTP3 User Adaption Layer Different adaptation layers possible • - M2UA (MTP2 user adaptation layer) • - M3UA (MTP3 user adaptation layer) • - SUA (SCCP user adaptation layer) M3UA supported in the 1st implementation of Rel4 M3UA (MTP3 User Adaptation) provides MTP3 user adaptation for upper layers to use MAP


TCAP

MAP

SCCP

TCAP

M3UA

SUA

SCTP

SCTP

IP

IP

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SIGTRAN Terms and Concepts SCTP Association set (up to 16 associations)

MSS (Server)

BSC (Client)

BCSU 0

BSU 0 IP

BSU 1

BCSU 1 BCSU 2

BSU 2

SCTP Associations An SCTP Association is identified by the computer unit (BCSU) and destination address. Only one association allowed per computer unit. A “SIGTRAN link" consists of one SCTP Association set. Signaling Link Set can only contain one "SIGTRAN link". Soc Classification level 10 © Nokia Siemens Networks

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SIGTRAN vs TDM SS7


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Abis-IF structure BTS 1+1+1

BSC

D-BUS

GSW

TRXSIG

ET

BCFSIG

B C F

TCH

ET

TRU

Abis Structure

ET

1 2

OMU

MCMU

BCSU

Abis Interface compressed allocation 1 2 3 4 0 1 2 3 4


5 6

7 8

fixed CCITT frame data TRXSIG 1BCFSIG TCH 2 TCH 3 TCH 4 TCH 5 TCH 6 TCH 7 TRXSIG 2 TCH 1 TCH 2 TCH 3 TCH 4 TCH 5 TCH 6 TCH 7

3 4

5 6

7 8

0 fixed CCITT frame data TCH 1 TCH 2 TCH 3 1 2 TCH 4 TCH 5 TCH 6 TCH 7 3 4 5 TCH 1 TCH 2 TCH 3 6 TCH 4 TCH 5 TCH 6 TCH 7 7 8 9 TCH 1 TCH 2 TCH 3 10 TCH 4 TCH 5 TCH 6 TCH 7 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 TRXSIG 1 26 TRXSIG 3 27 TRXSIG 5 28 29 30 31 BCFSIG

TRX-1

B C F

TRX-3

TRX-5

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For more detailed information about D-channels, see RG20 Documentation: Administer\ D-channel Services Abis interface Each BTS has one O&M channel, BCFSIG (or OMUSIG): it is an LAPD link connected to the BCF unit in the BTS the bit rate is 16, 32 or 64 kbit/s One TRX can handle 8 x 16 kbit/s traffic channels, TCHs: it needs two PCM timeslots for TCHs in Abis one TRX has one LAPD link, TRXSIG with 16, 32 or 64 kbit/s bitrate

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Exercise: Interrogation of signalling and circuit switched traffic BSC ET ………

ET ………

ET ………

ET ………

MGW/TCSM

ET ……… ET ………

GSWB

BTS

ET ………

ET ………

BCSU …….


BCSU …….

BCSU …….

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Exercise: Interrogation of Signalling, duration: ~30min Required equipment: one working VDU terminal for each work group. Write down the used MML commands! How many CCS7 channels are configured in the BSC (ZN…)? Are they on SIGTRAN or TDM? Draw their location (PCM and TSL) into the picture above! ____________________________________________________________________ ____________________________________________________________________ Interrogate the D-Channel (Lap-D) in your BSC (ZD….)! Which Computer unit is managing them? Draw the signalling flow through the BSC into the picture above! ____________________________________________________________________ Interrogate the existing circuit groups for speech in BSC (ZRC…)! Which ETs are in use? ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________

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Location area and cell ID VLR1

LAC: 100 BSC 2 CI= 1

BSC 3

BSC 1 CI= 2 CI= 1

CI= 1 CI= 2

CI= 3

LAC: 200 Soc Classification level 14 © Nokia Siemens Networks

CI= 3 CI= 2

LAC: 300

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BTS Parameters Mobile Country Code and Mobile Network Code The mobile country code (MCC) defines the code of each country globally while the mobile network code (MNC) defines the unique network code within a country. Location Area Code The MSC service area has been divided into several smaller areas, which are called location areas (LAC). Each location area has a unique number a location area code- to identify the area. Paging a mobile in case of an incoming call is based on the location area. Cell Identity A location area may include several BSCs, BCFs and BTSs. Therefore, a unique Cell identity (CI) is needed to define each individual cell within a location area. The range of CI numbers is 0-65535. In MML each cell is represented by a Segment consisting one or more BTS objects. The Cell Global Identification CGI=MCC+MNC+LAC+CI has to be defined in MCS and BSC.

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Routing area

RAC=1

LAC=10 CI=1002

LAC=20 CI=1001 LAC=10 CI=1010

LAC=10 CI=1001

LAC=10 CI=1008 LAC=10 CI=1007

RAC=3

LAC=20 CI=1004

LAC=10 CI=1005 LAC=10 CI=1006

LAC=20 CI=1008 LAC=20 CI=1005

LAC=10 CI=1009

LAC=10 CI=1004


LAC=20 CI=1003

LAC=20 CI=1002

LAC=10 CI=1003

RAC=2

RAC=1

LAC=20 CI=1007

RAC=2

LAC=20 CI=1006

RAC=3

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Routing Area From the GPRS’ point of view Location Area (LA) and Cell information is not enough. A new logical element in an Air interface is called a Routing Area (RA). A Routing Area helps to optimise the load caused by GPRS mobility management. One or more cells form a Routing Area, which is a subset of one Location Area; all the cells must be entirely contained within the same LA. The Routing Area is unique within a Location Area. Handling mobility management in the GPRS network is similar to handling mobility management in the existing GSM system. As Routing Areas are served by SGSNs, it is important to remember the network configuration plan and what has been defined in the SGSN when configuring the BSC side. The information has to be the same in the SGSN and the BSC. A Routing Area is contained within an SGSN, and all BTSs for the same RA have to be connected to the same SGSN. RAs are not confined to a particular PCU. Several PCUs can serve one RA and one PCU can handle several RAs. When creating a Routing Area, the user identifies the obligatory parameters Mobile Country Code (MCC), Mobile Network Code (MNC), Location Area Code (LAC) and Routing Area Code (RAC). The MCC, MNC, LAC and RAC parameters constitute a Routing Area Identification (RAI). In other words: The Routing Area and the BTSs are linked logically together by the RAI. Routing Areas are used in the PCU selection algorithm, which selects a serving PCU for a cell when the operator enables the GPRS traffic in that cell. RAI = MCC+MNC+LAC+RAC Optimal Routing Area size If the Routing Area size is too large, the paging channels and capacity will be saturated due to limited LAPD Abis or radio interface CCCH paging capacity. With a small Routing Area there will be a larger number of Routing Area updates.

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Network Colour Code

Green Nation Brown Land f1

f1

1st Nation GSM freq.=1 BCC=0 NCC=3


Country GSM freq.=1 BCC=0 NCC=0

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Network colour code (NCC) Network colour code is used in arbitrary situations on country borders in order to define the network from which a mobile gets its service. In every country the whole GSM frequency band has been allocated among local operators. In the vicinity of country borders it is possible for the mobile to receive the same frequency from both countries. Therefore, NCC is used to define which network a particular frequency belongs to. The range of NCC is between 0-7. NCC is based on the common agreement between neighbouring operators.

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Base Station Colour Code BCC=2 f1 f4 f3 f5 f2

BCC=0 f3 f5

f1

f1

f4 f3

f2 f5

BCC=1


f2 f4

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Base station colour code (BCC) and base station identity code (BSIC) Within a national network there is a similar problem, but from a different source. Due to the limited number of carriers, frequencies need to be reused rather often. This results in an arbitrary situation for mobiles that receive the same frequency from several sources. Using base station colour code solves the problem; the BCC describes a group of BTSs using a set of frequencies. Another BCC is given to the neighbouring frequency set. The range of BCC is between 0-7. NCC and BCC together comprise a code called Base Station Identity Code (BSIC). BSIC is transmitted to mobiles on Synchronisation Channel. The mobile decodes this information, and is therefore able to lock onto the correct network and BTS (=cell). BSIC = NCC + BCC

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Modifying a radio network parameter Start

Lock Network Object (BTS, TRX)

Modify Parameter Influence on involved Network Elements

Yes Modify involved NE (eg. MSS,BTS)

No Unlock Network Object (BTS, TRX)

End Soc Classification level 18 © Nokia Siemens Networks

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MML commands for operating the radio network

BSC

BTS 1

BTS 2

TRX 1

TRX 3

TRX 2

TRX 4 BCF 1

ZEE...

ZEF...

TRXSIG / BCFSIG ZDTI ZDSB

TRX 5 BTS Power Control

BTS SW

ZEW...

ZER...

ZEU...

TRX 6 ZEQ...

BTS -Adjacencies

ZEA...

BTS -Handover Control

ZEH... Soc Classification level 19 © Nokia Siemens Networks

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Logical Channel Types

LOGICAL CHANNELS COMMON CHANNELS

DEDICATED CHANNELS

FCCH

SCH

BCCH


DEDICATED CONTROL CHANNELS

COMMON CONTROL CHANNELS

BROADCAST CHANNELS

CBCH

PCH

RACH

AGCH

SDCCH

SACCH

TRAFFIC CHANNELS

FACCH

TCH

Data

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Refer to RG20 Documentation: Functional area descriptions\ Radio network performance\ Radio Channel Allocation\ Overview of radio channel allocation Functional area descriptions\ Radio network performance\ Basic Call\ Procedures in Basic Call A logical channel defines the type of information sent in a burst. Logical channels are mapped onto physical channels. One physical channel can carry more than one logical channel. Abbreviations: FCCH:

Frequency Correction Channel

SCH:

Synchronization Channel

BCCH:

Broadcast Control Channel

CBCH:

Cell Broadcast Channel

PCH:

Paging Channel

RACH:

Random Access Channel

AGCH:

Access Grant Channel

SDCCH:

Stand Alone Dedicated Control Channel

SACCH:

Slow Associated Control Channel

FACCH:

Fast Associated Control Channel

TCH:

Traffic Channel (FR, EFR, HR)

Data:

Data Channel (14.4KBit/S, 9,6kBit/S)

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Exercise: Interrogation of the radio network BTS=… CI=… LAC=… f1=… f2=…

BTS=… CI=… LAC=… f1=… f2=…

ET ET ET ET

BSC

BTS=… CI=… LAC=… f1=… f2=…

BTS=… CI=… LAC=… f1=… f2=…

BCF=..

BCF=..

BTS=… CI=… LAC=… f1=… f2=…

BTS=… CI=… LAC=… f1=… f2=…

ET ET

BTS=… CI=… LAC=… f1=… f2=…

ET ET

BTS=… CI=… LAC=… f1=… f2=… BCF=.. BTS=… CI=… LAC=… f1=… f2=…


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Exercise: Interrogation of the radio network. Duration: 40 min. Requirements: 1 MML terminal per workgroup. Write down the used MML commands! Interrogate the radio network of your classroom BSS! __________________________________ __________________________________ Make a drawing of the network according to the picture above and fill in the missing parameters. Interrogate the Abis structure of ET……. and fill in TCHs TRXSIGs and BCFSIGs in the frame beneath. __________________________________ __________________________________ Choose one BTS for interrogating the TRX configuration. __________________________________ CH0: CH1: CH2: CH3: CH4: CH5: CH6: CH7:

TRX1 _____ _____ _____ _____ _____ _____ _____ _____

TRX2 ______ ______ ______ ______ ______ ______ ______ ______

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1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

2 3 4 5 6 7 fixed CCITT frame data

8

21

BSS Radio Network Operation & Maintenance You are working on BTS number:…… Modify the CI of your BTS (Choose a number that is not used so far). ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________

What is the effect on other network elements? ___________________________________________________________________________

Change the frequency (ARFN) of your BCCH TRX (Choose a number that is not used so far). ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________

Interrogate the Routing Area Code of your BTS. ___________________________________________________________________________

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Radio Link Measurements UL: Rx Level DL: Rx Level Rx Quality Rx Quality MS-BTS Distance Adjacent cell Rx Levels

BSC

BSC

DL UL

BTS Adjacent cells

Reporting in every 480 ms (960 ms)

Serving cell Soc Classification level 23 © Nokia Siemens Networks

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Refer to RG20 Documentation: Functional Area Descriptions\Radio Network performance\ RF Power Control and Handover Algorithm\ Overview to RF Power Control and Handover Algorithm Measurements are sent via SACCH every 480 ms. Measurements are transferred via TRXSIG on Abis interface. The algorithms to handle the different types of measurements are located in the BCSU. The BCSU provides the results. The MCMU is responsible for further processing and decision-making concerning BSS resource management.

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Handover Cases BSC MSS (1) (2) BSC

MS

(3) (4) MSS

BSC

BTS


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Refer to RG20 Documentation: Descriptions\ Functional Area Descriptions\ Radio Network Perfomance\ Handover Signalling in BSC\ Overview of handover signalling in BSC The handover decision is made by the BSC and is based on the measurements of the BS and MS. BSC evaluates the candidate according to the neighbouring cells. Handover can be done for SDCCH and TCH. INTRA-BSC INTRA-CELL HANDOVER (same cell) between two TS in the same carrier or two carriers in the same BTS INTRA-BSC INTER-CELL HANDOVER (different cells) between two carriers in different BTS’s INTER-BSC HANDOVER between two BTS’s in different BSCs via MSC INTER-MSC HANDOVER between two BSCs in different MSCs Inter-BSC and Inter-MSC handover are determined by the BSC but executed by the MSC (signalling and call control needed) Only ther high load Handover is initialised and executed by the MSC.

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Power control in DX 200 BSC Power control for MS and BTS (non-BCCH) Averaging and threshold comparison as in handover cases Causes for POC: • high/low signal quality (ul/dl) • high/low signal level (ul/dl)

New power level determination by HOC&POC algorithm MS TX Power Level

MS Power Control

BTS

BS Power Control Soc Classification level 25 © Nokia Siemens Networks

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Refer to RG20 Documentation: Descriptions\ Functional Area Descriptions\ Radio Network Performance\ RF Power Control and Handover Algorithm\ Overview of RF Power Control and Handover Algorithm Power control is done for: MS BTS no power control for TRX carrying BCCH MS TX Power Level

SACCH

TRXSIG BTS

MS Power Control BS Power Control

MS Measurements

SACCH

TRXSIG BTS

BTS Measurements MS Measurements

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Frequency hopping • Base Band Hopping: RTSL

0

1

2

3

4

TRX-1

B

0

0

0

TRX-2

0

1

1

1

TRX-3

1

TRX-4

2

B = BCCH timeslot. It does not hop.

5

6

7

0

0

0

1

1

1

f2

2

2

2

f3

3

3

3

f4

0 1 2

2

2 2

3

3

3

f1

3

Time slots 1...7 of all TRXs hop over MA(f1, f2, f3, f4). This hopping group uses HSN-2. MAIOs have to be different between same RTSLs in same hopping group.

Time slot 0 of TRX-2,-3,-4 hop over MA (f2, f3, f4). This hopping group uses HSN-1.

• Synthesized Hopping: TRX-1

B = BCCH timeslot. TRX does not hop.

B

fa

f1, f2, f3, f4,

f1, f2, f3, f4,

.....

TRX-2

0

0

0

TRX-3

1

1

1


0 0 1 1

Non - BCCH TRXs are hopping over the MA -list (f1,f2,f3,...,fn) attached to the cell. MAIOs have to be different between same RTSLs in same hopping group.

0

0

0

(fb)

1

1

1

(fc)

Only one hopping group. Only HSN-1 is meaningful.

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Baseband hopping management There are two different hopping groups used with baseband hopping in each BTS. When the Intelligent Frequency Hopping (IFH) feature is used, an additional hopping group 3 is in use. Group 1 All radio time slots, except the BCCH time slot (RTSL-0), on the BTS belong to Group 1. It is managed through FHS-1 in the BSC's database. HSN1(hopping sequence number 1) is related to this group. Group 2 All radio time slots (RTSL-1 to 7) on the BTS belong to Group 2. It is managed through FHS-2 in the BSC's database. HSN2 is related to this group. If baseband hopping is used on the BTS, all radio time slots belonging to the BTS are defined as hopping. The only exception to this is the BCCH time slot, which is always defined as non-hopping. In case there are dedicated signalling channels (SDCCH, CBCH) on the BCCH time slot, they do not hop either. These hopping groups are maintained by adding and removing the Absolute Radio Frequency Channel Numbers (ARFCN) of the TRXs used in frequency hopping in the BTS. Based on the available ARFCNs in the BTS, the following hopping parameters, stored in the BSS Radio Network Configuration Database (BSDATA), are updated: - Mobile Allocation (MA) - Mobile Allocation Index Offset (MAIO) If baseband hopping is used in the BTS, you have to give a hopping sequence number (HSN) for all the hopping groups in the BTS. RF hopping management RF hopping can be used when the transceivers of the BTS are of the hopping synthesiser type (Nokia Talk family of base stations or Nokia PrimeSite). Then you can choose the frequency hopping mode between non-hopping, RF hopping, and BB hopping. When the transceivers of the BTS are of the conventional type (Nokia 2nd generation base stations), only non-hopping or BB hopping are possible. The frequencies for a hopping cell are defined by attaching the cell to one of the mobile allocation frequency lists (MA-lists) defined by the operator. The system calculates the MAIOs, and the operator gives the HSN for the cell. The BCCH transceiver cannot hop, but it transmits a continuous BCCH frequency. Note that the MA used must contain at least as many frequencies as there are unlocked hopping transceivers in the BTS. The MA or the HSN can be changed only when the hopping cell is locked. You can create up to 255 mobile allocation frequency lists (MA-lists) and use them freely with different cells. One list can contain up to 63 frequencies.

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Exercise: Cell parameter interrogation

POC

BSC

BTS/SEG

HOC CH


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Exercise: Cell Parameter Interrogation, duration:~20min Required equipment: working VDU terminal for each work group. You are interrogating BTS ……/SEG…… Power Control (POC) Interrogate parameters concerning Power Control (ZE.…) MML command:_______________________________________________________ How could you modify those parameters? MML command:_______________________________________________________ Handover Control (HOC) Interrogate parameters concerning Handover Control (ZE.…) MML command:_______________________________________________________ How could you modify those parameters? MML command:_______________________________________________________ Frequency Hopping System (FHS) Interrogate parameters concerning Hopping System (ZEQ.…) MML command:_______________________________________________________ How could you modify those parameters? MML command:_______________________________________________________ Radio Timeslots (CH) Interrogate parameters concerning Radio Timeslots (ZER.…) MML command:_______________________________________________________ How could you modify those parameters? MML command:_______________________________________________________

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Adjacent cells BTS = 1 Name = Köln 1 LAC = 500 CI = 10001 BCCH freq = 810

BSC BCC=0 NCC=0

BTS = 3 Name = Köln 3 LAC = 500 CI = 10003 BCCH freq = 870

SEG = 2 Name = Köln 2 LAC = 500 CI = 10002 BCCH freq = 840

BTS = 4 Name = Dormagen LAC = 501 CI = 1004 BCCH freq = 710


LAC = 504 CI = 10040 SCC = 44 Freq = 1234

BTS = 1 Name = Bonn1 LAC = 504 CI = 20001 BCCH freq = 580

RNC 1

BSC 2

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A segment can consists of several BTSs. They are necessary for combining different Frequency bands or different BS hardware into one logical cell. Segments are represented by one Cell Identity. Commands of Adjacent cell handling in BSC ZEA? C: ..... CREATE ADJACENT CELL PARAMETERS D: ..... DELETE ADJACENT CELL PARAMETERS R: ..... DELETE INCOMING ADJACENT CELLS M: ..... MODIFY ADJACENT CELL PARAMETERS X: ..... MODIFY C/I HANDOVER PARAMETERS O: ..... OUTPUT ADJACENT CELL PARAMETERS P: ..... OUTPUT SHORT LIST OF ADJACENT CELL PARAMETERS T; ..... CHECK ADJACENT CELL DATA Adjacent cells in same BSC area are given by BTS number and foreign Adjacent cells are defined with necessary cell parameters.

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Exercise: Adjacent cells BTS = …….. Name = ……… LAC = …….. CI = …….. BCCH freq = ……

BSC BCC=…… NCC=……

BTS = …….. Name = ……… LAC = …….. CI = …….. BCCH freq = ……




LAC =……. CI =………. SCC =…… Freq = …….


RNC x

BSC y

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Exercise: Adjacent cells. Duration 20 min Requirements: for each group 1 working BTS and a MML terminal You are working on BTS No______! Find out the missing parameters of your BTS and update the drawing above. ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ Check all existing adjacencies to your BTS and delete them. ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ Choose 2 cells of your BSS and create one directional adjacencies. Present the adjacencies with arrows in the picture above. ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ Create an adjacency to a cell of another BSS. ____________________________________________________________________ ____________________________________________________________________ Create an adjacency to a cell of a WCDMA cell. ____________________________________________________________________ ____________________________________________________________________

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05_RN28195EN20GLA0_BSS Radio Network Operation & Maintenance

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