Complet BSS Pro (3)

8/3/2019 Complet BSS Pro (3)

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:

BSS

""

""

1/3/2010 - 13/9/1389


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1844 1876 1895 19632.

.

.

"70 . BSS GSM

:BSS BTS,BSC,TRAU .

.


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. .

" .""

"" "" .

""


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GSM-------------------------------------------------------------------------------------------------6GSM----------------------------------------------------------------------------------------------------------6GSM---------------------------------------------------------------------------------------------------7

GSM------------------------------------------------------------------------------------------------9MS------------------------------------------------------------------------------------------------------------12

BSS-----------------------------------------------------------------------------------------------------------14BTS----------------------------------------------------------------------------------------------------------15

BTS-------------------------------------------------------------------------------------------------16

(Radio Access)--------------------------------------------------------------------------------------17 BTS--------------------------------------------------------------------------------------------19RockBTS----------------------------------------------------------------------------------------------20

----------------------------------------------------------------------------------------------22BTS----------------------------------------------------------------------------------------------------23

------------------------------------------------------------------------------------------------------24Hand over---------------------------------------------------------------------------------------------------27

----------------------------------------------------------------------------------------------------28Cell-----------------------------------------------------------------------------------------------------30

Frequency hopping----------------------------------------------------------------------------------------33BSC----------------------------------------------------------------------------------------------------------35BSC---------------------------------------------------------------------------------------------------36

Transmission function-------------------------------------------------------------------------------------38Q-Max address---------------------------------------------------------------------------------------------39

BSC-------------------------------------------------------------------------------------40TRAU-------------------------------------------------------------------------------------------------------41

GSM Channel----------------------------------------------------------------------------------------------42 ---------------------------------------------------------------------------------------------------43

---------------------------------------------------------------------------------------------------43Data burst--------------------------------------------------------------------------------------------------47

Data burst--------------------------------------------------------------------------------------------48Frame type-------------------------------------------------------------------------------------------------49

GSM interfaces--------------------------------------------------------------------------------------------50Um interface-----------------------------------------------------------------------------------------------51

MSBTS-------------------------------------------------------------------------------------52A bis interface---------------------------------------------------------------------------------------------53

A-interface----------------------------------------------------------------------------------------------54--------------------------------------------------------------------------------------------------------55


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GSM

( CEPT) (Conference of European Post and Telecommunication)

1982 GSM 900. MHz Group Special Mobile

GSM 1985

. GSM

TDMA 1987 1991

. GSM

ETSI (European Telecommunication Standards Institute) 1989 ETSI .

.

1990

1991

GSM 1997 (Global System for Mobile communication) (Groupe Special Mobile)

1999 142 ,405

250 G.S.M

GSM(Global System for Mobile communication)


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.

. FDMA TDMA

: GSM

: GSM

64kb/s cellcell

GSM


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GSM

GSM

Mobile Station (MS)o Mobile Equipment (ME)o Subscriber Identity Module (SIM)2

Base Station Subsystem (BSS)

o Base Transceiver Station (BTS)o Base Station Controller (BSC)o Transco ding Rate and Adaptation Unit (TRAU)

Network Switching Subsystem(NSS)o Mobile Switching Center (MSC)o Home Location Register (HLR)o Visitor Location Register (VLR)o Authentication Center (AUC)o Equipment Identity Register (EIR)


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GSM

: GSM

GSM 900 GSM 0018GSM 9001GSM

FDMA (Frequency Division Multiple Access)TDMA (Time Division Multiple Access)

P-GSM

900

E-GSM

900

R-GSM

900

GSM

1800

GSM

1900Uplink

frequencyRange

890-915MHz

880-915MHz

886-915MHz

1710-1785MHz

1850-1910MHz

Down-linkfrequency

Range

935-960MHz

925-960MHz

931-960MHz

1805-1885MHz

1930-1990MHz

Channelspacing

200 KHz 200 KHz 200 KHz 200 KHz 200 KHz


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Downlink BTSMSUplink MSBTS

Channel spacing 200 KHzFrequency channel GSM

Duplex spacing: uplinkdownlink

)1.1(

uplinkdownlink BTS ms" BTS . datamsbts

ms . cell . ms data

msBTS timing advanced )1.1(

GSM 900

900 MHz GSM . Sub bands 25MHz

Frequencychannel

124 174 144 374 299

Duplexspacing

45 MHz 45 MHz 45 MHz 95 MHz 80 MHz


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GSM 1800 1800 MH 1994

75MHz

GSM1900 . 1900MHz 1996

60MHz

TDMA

.

BTS .

TDMA .

8 .

TDMA 8 )(

8) ( BTS TRX BTS .

TRX 8

8 TDMA FDMA .

TDMA .

-

-- ...

.

.

....)1.2(

TDMAcarrier


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TDMA

)1.2(

FDMA: 8

s8 time

0.577 time slot time slot 8 4.615TDMA

: FDMA

FDMA:

InflexibleGuard space

MS(Mobile station)

Mobile station ME(Mobile Equipment)SIM(Subscriber Identity Module)


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ME Ms

IMEI(International Mobile Equipment Identity)

160 .

SIM

.

SIM

SIM card

HLR SIM card .

Ms SIM GSMProvide .

SIM ME emergency.SIMcode code

(IMSI) International Mobile Subscriber Identcode

MCC MNC

IMSI MSISDN:

MSISDN 09121620000

IMSI: IMSI

10 43211) IR-TCI( 15

IMSI 10 MSIN . 10

MSIN.

)MSISDN( .

)IMSI( .

HLR) (


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. .

IR-TCIIRVALIACOM IR-TCI HLR

REGISTER .

SA ALJAVAL )

VLR

TMSI: IMSI

8

) TMSI IMSI

.( TMSI

.

LACCI

6 BTS )(

CELL ID) CI(

CI LAC LAC LAC .LAC4 .

: BTS )( LAC 1211 CI121152211532115

VLR LAC=1211CI=32115 .

LAC

BSS

(Base Station Subsystem)

BSS GSM MSNSS ) ( :

-operation & maintenance BSSMS air interface NSS link2Mbit/s


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BSS :

BTS (Base Transceiver Station)BSC (Base Station Controller)TRAU(Transco ding Rate and Adaptation Unit)

BTS(Base Transceiver Station)

MSBSC date) (

mobile station cell data bscms ms ms

BTS

BTS (Shelf) TRE SUMABoard )Sector (1 Sector (2)Sector (3) BoardAbis

EACBPower . BTS .Antenna(RA) Radio AccessCombinerSector.(TRE) Transceiver Receiver Equipment(SUMA) Summation Unit Mobil Access6- EACB External Alarm Collection Board(CCF) Cabinet Cooling Fun


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Abis BoardPower

Combiner

1800MHZ 900MHZ Combiner

BTS

1-

2-

.

)(

:

.


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306090

:

BTS .

:

Radio Access

BTS GSM Antenna . GSM Antenna .

GSM Antenna GSM Antenna 120 120 .

. GSM antenna TX) ( Rx)( TRE

GSM Traffic . GSM (Tilt)

GSM .GSM TX Rx GSM TXRx

GSM .GSM 185cm 235cm . Combiner TxRxTRE .

GSM Antenna :Tow Alban single Alban Tow Alban

BTS1800900 Dope laxer.Dope laxer- ,Dope laxer inputout put

signal .


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(TRE) Transceiver Receiver EquipmentTRE BTS BTS 218 TRE .BTS TRE . TRE TX) (

Rx)( .TRE ., GSM Antenna Feeder , TXRxTRE .

)TRX(

BTS :

BTS

.

.

1000 40

. BTS TRX ) (

TRX 8 ) TDMA( 6 TRX

3)( 6TRX

6+6+6 5+2+2 . 6TRX 48 2 )

- (....46 ) ( .SUMA: Summation Unit Module Access

Suma Board BTS,BTS SUMA .Board BTS BTS

Suma Microwave Abis MWBSC TC MSCSwatch , BTSSUMA SUMA.

SUMA board .

: Clock synchronization

OMU:operation and maintenance SUMA BSC command alarmBTS

BIE: SUMA Abis BTS .


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Abis A bis BTSBSC 2mm BTS AbisBTS

PCMDDF Abis .A bismapping DDF) Data Distribution Frame(

Fan CCF Cabinet Cooling Fan

BTS .

. BTS . 2530

2015 EACB External Alarm Collection Board

Alarm :

Alarm Alarm Alarm power)( Alarm DDF DDFalarm DDF

DDF alarm EACB PMC

SUM alarmOMCR. OMCR (Operation management center room Radio)

BTS:

Dish

. .

.

interface

.


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.

ISP .

ISP ISP ISP

.

.

ISP

.

IWF=InterWorking Function(MS . GSMBTS

. BTS BSC . BSC-BTS .

.BSC

handoverpower control .BSCBTS BSS .

BSS MSC MS

.BSS link

handover .BSS N N .

ROCK

.

Slot ROCK MPProcessor main Rock

MP keyboardmouse

.

ROCK Duplicate

.

. TRX Duplicat

ROCK TRX TRXslave .


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TRX

TRX 1TRX Random

TRX TRX

overflow overflow

TRX ROCK ROCK TRX shelf 1

2shelf 5shelf Rock 3.4.1 .

Syck Rock

Rock.

Duplicate borscht

)B= battery fit O= over volter protectionR= ring S=supervisor C=coding (code,

decode) H=hybridT=test(

Syck .

Ckclock .

Rock

.

Rock :

Rock Server Rock

Rock Solarise

Alarmmanag

Labtop

Rock Unix


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Client

ServerClient Hub

Rock Client

.

. .

Server Rock router

Rock

sisco. HLR ULR

MSC BSC

router Client

.

Rock cooller cooler

server Rock .

RockRock Alarm managment Rock

.

Rock Soreen

Alarm mangment

.

BSC Rock=


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.

:

1.

2.

1 :

-MOBILE ORIGINATED

-MOBILE TERMINATED

2

:

.

PAGING

.

.

. PAGING

.

CELLSELECTION PAGING .

:

PLMN

.

.


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BTS

BTS TRE . BTS IdoorOutdoor

BTS . .

MBI5

BTS Indoor BTS TRE 12.

BTS / TREDuplexer/Combiner / 4TRE Fedeer

.

TRE Duplexer/Combiner TRE

Duplexer/Combiner TRE.

MBO 2 BTS 3X4 12 TRE.

MBO1 BTSBTSOudoor 6TRE3 Duplixer/Combiner.

Micro BTS:

BTS BTS 2 TRE "

Multi plaxingmultiplexing

GSM BTS link

BSC

Modulation

.PCM (Pulse code Modulation)

. PCM .

BTS BSC .

) - .(


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. -- - ...

HDSL 2 SDH .

. "

" . PCM . 2 )2048

( 32 64 . 64

) .(

PCM

PCM 2 2 . 2) 2(32

31 30 ... PCM . PCM .

PCM

)PCM 30( PCM 120 BTS .

- . PCM

BTS .

. PCM 30 8 )

( 2 4

) 8 2 (. 120 BSC

30 . 8 2

BSCBTS 2 8 .

Filtring

Simpling

Quntizing

Encoding


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Filtering "

Filtring .

Simpling .

Pulese Apledtude Modulition 8000 .

Quntization Round off

rund off

128 rund off

"round off " 5.4 5Quntizatin.

Linear Quntization 128

.

Non liner

128 . .

Encoding round off "

. BCD .

.

AM(Amplitude modulation )

. . carrier .


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FM (Frequency Modulation) carrier .

FM . FM AM.

GSMTDMAFDMA .

PM (Phase Modulation)carrier .AM "Analog modulation. Digital .AM

.AM,fm AMPower .AM .AM

FM PM .

Analog signal .

time slot. carrier .

Digital signal . (0,1) .

.Distortion

signal .

GMSK (Gussian Minumim Shift King): GSMGMSK QPSK

GMSK FM. GSM 270/833Kbp/s.

Hand overHand over

MSBTS hand over .

MSBTS cell supportMS .Rx Level MSBTS

handover handover

Bts Bts

.


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Ms ( MobileStation( 0

Ms HLR Auc Auc

A8 MS .

MS VLR MS MS MS

MSVLR

HIRAUC AUC 35

Dial

MS

MS

.

AUC MS MS

HLRVLR

VLR ) Dial

(hand over

BTSA BTSB

hand over

handover .

: ,

FCC . .

interference , Reuse. GSM

. Cells Frequency planning . Reuse .

Cell 28 . ,

, Co-Channel .

.


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Cell :Cell: .

Omni Direction , , .

Polygons .

Reuse GSM Cluster.

.


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Cell Size:Cell type Cell :

1. Macro cells2. Microcells3. Selective or sectorized cells

4. Umbrella cells5. Nano cells6. Pico cells

1- Macro cell: GSM. 70 ,MSGSM

Cell:

a- b- c- Celld-


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2- Microcells : 200

:a-

b- , .


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Selective Cells or Sectorized Cells:

Umbrella Cells:

Handover .Umbrella CellsMicrocell MS ,

MS Handover Umbrella cell Handover .


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_ bts cell

bts cell Omni-directional

Bts cell cell360

Directional cell120 bts cell 360 cover

Frequency hopping:frequency hopping

Carrier..

.

Om1

120degr

3


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. (S/N)

frequency hopping

frequency hopping

:0.5774.617. TDMA

4.617217. TDMA

.-


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BSC (Base Transceiver Controller)

BTS . MS

Hand over MS BTSMSC BTS

BSC MSC . BSC

BTSMSC . BSCBTS MSC .

BTS(MS) MFS .

MSCBTS . MFSBTS

O&M .BSC GSM GPRS

(Packet).BSC .BSC


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BSC:BSC

DSN (Digital Switch Network)

ABIS-TSU (terminal sub unit)ATER-TSU (terminal sub unit)

COMMOM-TSU (terminal sub unit)

ABIS TSUBTS ABIS TSU ABIS Link .BTS ABIS TSU TRXBTS.

ATER TSUTC(Trans coder) MFS Link Solution Link ATER MUX

ATER ATER MUXATER BSCTC.ATER TSU Link)( .

BSS Common TSU . (Commissioning)BSS Download LMT .

OMC/R(Operation Maintenance Center) BSC Common TSU

. ATER, ABISCommon TS U (Functions) O&M . BSC .

BSC .Terminal Sub Unit (TSU)

yABIS


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yATERyCOMMON

A Digital Switch Network (DSN)Common resources

y-Broadcast bus

yClock Synchronization and generationyAlarm System

Transmission ControllerPower Supply

BCS Functions

1-Tele Communication Functions2-Transmission Functions3-O & M Function

:

Telecommunication Function : GSM Radio Frequency Management

yBroadcast and Common central channelySignaling channelsyRadio measurement processing yIn Call Modification handling

GPRS Radio Frequency ManagementyPacket Broadcast and Common Control Channels

yPacket Signaling ChannelsyPacket Data Channels

BTS . (Logical) (GSM & GPRS)TCHBSC

. BTS BSC. BSC

3-GSM & GPRS Traffic Channel Resource Management

yEstablishes and Releases radio resources yQueues requestyc- select TCH for handovers

GSM and GPRS Supervisionymonitors and controls mobile trafficyoverloud processing

control traceshort massage service


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BSSAP: BSS Application part handles massage distribution between MSC

yDTAP: Direct Transfer Application part . Transparent massage

y- BSSMAP: BSS Mobil Application Part

. none transparent massage . Radio Channel management

GPRSA: GPRS Application Partyradio packet channel management ypaging function

(BSSAP) BSC . :

(BSSMAP) BSCMSC . (DTAP) BSC MSMSC

.(GPRSAP)BSCMFS .(GPRSAP) (BSSMAP)

.BSSMAP: Base Station System Management Application PartGPRSAP: General Packet Radio Service Application Part

:Transmission function

:BIE: Base Station Interface Equipment

performs signaling and sub- multiplexing on the Abis interface

The Sub multiplexer is used between BSC and TC

(SM) BSCTC .Multiplexer: .

trans coder . BSC .

Minimizes The number of PSMlinks Pulse code modulation.(PCM)

TSC Transmission sub system controller.Manage The Qmux Sub Multiplexer busyb- polling of the transmission elements .

yc- singling data to the Transmission elements

TSL Link

-a BTS BSC MSC .

b- TSCBSC.Transmission )function(BSC :1-BSCBTS BIE. Multiplexing

signal .


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2-BSCTC (SM). Multiplexing Ater link .

TC Multiplexing16kb/s )TCH (64kb/s . 16kb/s TC . Multiplexing

64kb/s MSC .

: Qmux Address

BTS BSCBTS .

:(O & M) Function

1- 2-

3- 4- 5- (Logical)6- 7- 8- 9-

10- )Module( BSCOMC/R .OMC/R

. . BSC BSC

. BSC :

1.Input:

BSC :

TCUC: TRx Control Unit CAccess Switch

BIUA: Base Interface Unit type A

BIUA TRx BSC . BTS BSC BIUA .BIUATCUC

BIUA configurationBSC.BSCconfiguration 2 BIUA.BSCconfiguration 4 )9(

BIUA.BSCconfiguration 6 14BIUA.BIUA BSC :

1BIUA = 8TCUC


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1TCUC = 4TRx1BIUA= 8(4TRx) =32TRx

BSCConfiguration 14BIUA 448TRX 37BTS .

2-Output: BSC ASMB(Ater Sub multiplexer BSC)

DTCCAccess Switch ASMB DTCC :

1 ASMB= 4DTCC= 4 ATER = 1 ATER MUX = 1 HighwayATER 16kb/sATER MUXHighway 64kb/s

. BSC ATER MUX TC .

3-)Common(:

a-CPRC Systemb-CPRC OSIc-CPRC BS

aCPRC System: BSC CPRC

. RAMBSC BSC

BSC(Commissioning).

bCPRC OSI:CPRC OSIBSC

BSC/ROMC (X-25) MSC. OMC/R .

cCPRC BS: BSC CPRC BS

. MSC BTS .

TSC Qmux AddressBTS BSC .

BSC:

BSC PBA .PBA= Printed Board Assembly- 1

a-CPRCb-DTCCc-TCUC

TCU = Terminal Sub Unit -2


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TSU . TSU )DSN( . . .

.= Network Element)NE( BSC BIUAASMB .

TC ASMC . CPRC BSC. :System , Broadcast and osi

BSC :1-A bis TSU BTSTRX 32TRX/TSU

.2-A ter TSU Transducer

240chenal/TSU.3-Common function TSUO&M BSC .

ABIS TSU 32TRX. ABIS TSU 32RSL

.RSL= Radio Signaling Link ATER TSU 240 . ATER TSU

PCM Trans coder TS PCM TS X25N7 .

ABIS TSU TCUC . BIUA AS . BIUAsub multiplexing function sub multiplexing function

. BTS TCUC. TCUC AS .

TSU ATER

DTCC ASMB AS ASMB DTCC ATER mux . TDCC ASMB ATER .

: COMMON TSU CPRC CPRC

. .Common TSUTSU DSN .

BSC . BSC . .

BSC ) BIUA , ASMB ( TSCA Q mux Q1

TRAU DateSpeech ,vedio ,vicse , audio.

16kbp/s64kbp/s BSCmsc msc bsc.


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(13Kbps speech or data + 3 Kbps additional synchronizing data)*4= 64kbpsTRAU Standdard

GSM Channels1-Physical Channel2-Logical Channel


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Physical channel

carrier GSM MS . ) .(

Channel carrier . TDMA . Time .

time slot .time slot 07 . TDMA Frame . frame Time slot.

time slot 07 frame . frame. frame

. " carrierAir interface . multiform timing time slotburst

time slot . timingtransmission .

MSBTS .Database ,time slot TDMA frame physical

Channellogical channel MSBTS

Logical channel GSM Logical channel

1Traffic channel2-Control channel

yTraffic Channel traffic channel gsm

rate .

Traffic Channel full ratehalf rete

Full rate:

)normal( time slot

.- 13kbp/s

- 9.6kbp/s .

Half rate

half rate "

full rate .

6.5kbp/s data 4.8kbp/s . burst burst


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Control channelGSM control channel

" 1.)BCCH (Broad cast Control Channel2.CCCH (Common Control Channel)3.DCCH (Dedicated Control Channel)

)(

BCCH

Downlink . BSSMS. MSCell

cell MS cell .BCCH BTS

BCCH MS MS Dedicate BCCH

.

Connection area identity cell MS

cell cell

Access control


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SCH (Synchronize Channel)

" frame . frame multiframe datamulti frame . SCH

Multi frame .

FCCH (Frequency Channel) Carrier "BCCH

BTSFlag 0


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CCCH (Common Control Channel) . . control channel

Uplinkdownlink BSCMS . BTS .

RACH(Random Access Channel) MS

BSC, Paging.

PCH (Paging Channel)

downlink MS . (Page) MS

pagingIMSI,TMSI,IMEI .

CBCH (Cell Broadcast Channel) MS

cell .

AGCH (Access Granted Channel): BTS

MS RACH BTS Downlink MS

.(PCH)(AGCH) Downlink

DCCH (Dedicated Control Channel) f

Call setup, . carrier

SDCCH ,MSCal setup

authentication.Location updatespoint to point SMS

SDCCH (Stand-alone dedicate control Channel) data .

SACCH (Slow Access Control Channel):downlink

up link link .FACCH (Fast Access Control Channel): )s(stealtraffic

burst .?

ACCH (Associated Control channel)

up link downlink .

1FACCH

2SACCH

Data burst

CCHCCCHNormal burstAccess Burst .

CCHDCCHNormal burst

CCHBCCHNormal burstDummy burst

SCH,FCCHSCHFrequency burstSynchronization burst

CCCH,CBCH,PCH/AGCHNormal burst


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CCCHRACHAccess Burst .

DATA BurstBurst time slot.GSM Bursttime

slot .burst148 bit burst 3.69mm/s burstguard band 30.5ms

. burst

Information 1

Informationburst .Information

114bit data .

training bit training bit )(

Guard period 2

GP Burst transmission burst

burst gp

on and off

off burst .

Time advanced

3.Training sequence

26bit TSC(Trening sequence code)

MSBTS MS

Demodulation4.Tailbit

Tailbitburst burst 5.staling flag bit

burst 2bit

TSC TSC Burst "

FACCH FACCH SACCH


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Data Burst

Burst GSM 1.Normal burst

2.frequency correction burst (FCCH)

3.synchronization burst (SCH)

4.Dummy burst

5access burst (RACH)

)(

"

Normal burst TS 26 Normal burst

. 58 bitbit 57data 1 bitStealing flag CCCH, BCCH) (RACH .

normal burstTCH data: normal burst148 bit link 456 bit datablack data

burst114 bity " normal data burst Stealing flag 2 bit 114 bit ta da data burst data , user information , control signal data 32bit 26 bit TSC6 bit Tail bit 3bit 3 bit

burst. (000) normal burst148bit."normal burst map Radio likemodulation

. ) .(

Dummy burst

burst normal burst bursttime slotIdleBCCH

. Broadcast Channel . ms downlink time slot .MS Access .dummy burst

data )(

Access Burst


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ABBurst msuplink burst 11 Tail bit8 bit 3 bit burst 41 bitsynchronization

sequence guard band 68.25 bit guard band data BTSData ms time

MS guard band )(

Synchronization burst

SBBurst BTSMS MS SCH burst , TSC, Normal burst 64 bit

encrypted bit Base station identity code)(BSIC,Frame number TDMA Frequency correction burst

MS

Frame type

TDM Frame time slot 0.577ms " 4.62 ms . physical channelshear

logical channel multi frame

Multi frame 26 frame 0 25 frame 24 frame 1frameSACCH`Frame idle. "26 120 ms .

Multi fame 51 multiform51 .; 0 50 . 235.365 ms

.Supper frame


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TDM frame 51.26 "1326TDM frame. 6.12secn

Hyper frame2048 "2715648TDM Frame 3

28 53

GSM interfacesInterface GSM equipment GSM

GSM .InterfacesName

MS--------------BTSBTS-------------BSCBSC------------MSCMSC------------VLRMSC------------HLRVLR------------HLRMSC-----------MSCMSC-------------EIRVLR-------------VLR

HLR------------AUC

UmA-bisABCDEFG

H

GSM GSM . GSM Protocol protocol

.Standard,ITU,MSCBSCSS7 Signalingapplication .Protocol MSBSC LAPD.

. Mapping . .


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Um or Air interface

Um interface standardGSMMSBTS Um ,MSBTS Wire

Um MS . Layer

Layer 1:Radio system Layer time slotcarrier

Layer 2:Layer 3: protocol.

RIL3 RR(Radio Interface Layer 3- Radio Resource management)

MSBSC Layerpaging ,Radio,Access Channel , ciphering , hand over . RIL3 RR

Management MS


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3.RIL 3 CM (Call Management) MSMSC Protocol

air interfaceMSBTS.1.Channel Request

RequestMSBTS Requestaccess, 1byt

paging " MS request hexadecimal

access burst

Hand over Access

request MSBTS B Hand over access hand over hand over BTS .Hand over accesschannel request

access BTS .

System information 2 BisSystem information 2 ter Broadcasting broadcast BTS

MS . Data GSM 1800,1900,900 .

System information 5 bis

System information 5 bis bts msbroadcast , data (1800,1900,900)

System information 5ter" BCCHCell MSACCH

Partial rerelease BTSMS MS

.Call cantor partial release half rate .

Channel Release

BTS MS connection disconnect, air interfacecase 0case 1 .case 0normalclearingcase 1up normal clearing .

Partial release complete

MS BTS acknowledgment partial release .


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Channel mode modifies: BTS MS transmission

.rate transmission .

Class Mark enquiry:

BTSMS BTS .power class , Encryption, MS capacity ,. .

Measurement report:BTSBTS MSBTS up link

. measurement report 480msBTS SACCH "BTSMeasurement report BSC

.Channel mode modify Acknowledgment

MS BTS mod modify " transmission rate .

System information 1 MSBTS MS BTS.

System information 2

: BTSMS MS cell

System information 3

: BTSMS cell CCH BTS.

System information 4:

MSBTS systeminformation 1 .

System information 5:

MSBTS 5SACCH MS

System information 6: MSBTS BTS DATA

MS SACCH .System information7System information 8 DCS1800pcs 1900

MS cell selection.

A bis interface bscmsc

1Layer:phisecal layer2LAPD Layer


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3BTSM Layer(bts manegmnt) Bscbts btsbtsm RIL3-RR Maping mapping

A Interface

bscmsc gsm

7 gsm 1900ansi ss7 .A- Interfaceapplication

.MTP (message Transfer prot)

SCCP (Signaling Connection Control Part) Connection less

Connection Orianted .

BSS AP (BSS Apliction part) .

1BSS AP BSS APProducer mscbss

mantenace hand over .


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BSS GSM

GSM: . . .MS

MS BTS

. .BSS: BSS

GSM .BSS "BSCBTS BTS: BSS GSM BTS

. MS BSC BTS TRETRE. GSM BTS

.GSM:

. . BTS: BTS BTS .

BTS: . . : BTS .

Hand over: hand over GSM .

: .Cell:

Frequency hopping . . BSC .

GSM .


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10..com/gsm-www.kashan

.

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Date post:	06-Apr-2018
Category:	Documents
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