bscoh03c

Copyright 1998 by Ericsson Radio Systems AB2882-EN/LZT 123 3801 Rev C

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The Modular and Flexible BSS SystemArchitecture

A

A

A-bis

A-bis

A-ter

A-bis

A-bis

MSC

TRC

BSC/TRC

RBS

BSC

RBS

BSC

RBS

RBSA-ter


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Standard Cabinets for TRC

FanGSS 16k A

GSS 16k B

TRA R5

8 ETC5+4 RPG2

APZ212 25

8 ETC5+4 RPG2

12 ETC5

12 ETC5

12 ETC5

TRA R5

IOG 20C

TRA R54Ksub-rate

4Ksub-rate

CLMrcm

CLMrcm

12 ETC5


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TRC Hardware

RPRP

MSC/VLR

SRS

BSC

ETC

ETC

ETC

ETC

RP

CPSP

TRAU

RPRPD

ST7

RP

GS

RALT RTLTT


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The TRA R5 Subrack

TSMTSM

Plane B

GSTSMPlane A

TRA R5 Subrack (front view)

Plane A and B aresplit in the SNTs.

RP

4-0

DLH

B-A

DLH

B-B

RP

4-1

Spa

re

TR

AB

-1

TR

AB

-16


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Standard Cabinets for BSC/TRC in CME 20

FanGSS 16k A

GSS 16k B

TRA R5

TRA R5

8ETC5+4RPG2

APZ212 25

12 ETC5+2RPG2

12 ETC5+2RPG2

12 ETC5+2RPG2

12 ETC5+2RPG2

TRA R5 GSS 16k A

GSS 16k AIOG 20C

8ETC5+4RPG2

4Ksub-rate

4Ksub-rate

CLMrcm

CLMrcm

GSS 16k B

GSS 16k B


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BSC Hardware

ETC

RALT/RTLTB

RPD

TRAU

ETC

RBLT

RBSMSC or TRC

ETC

ETC ETC

S7-ST

ETC

BSC/TRC

GS

TRH

RP RP RP RPRP

CP-A SP-A

SRS


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SRS/TRAU/TRH Interworking BlockDiagram

*6

(7&

RALT

75+

75$8

TRAB

(7&

RBLT5%6

06&

656


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Standard Cabinets for BSC

APZ212 25

GSS 4kSRSM 1k

8ETC5+4RPG2

8ETC5+4RPG2

12ETC5+2RPG2Fan

+

12ETC5+2RPG2

12ETC5+2RPG2

12ETC5+2RPG2IOG 20C

CLMrcm

CLMrcm

Powertransmission


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Device Types

MALT

MALT RALT

RALT

BSC/TRC BSC

RBSBSC

RBS

TRC

MSC

RTLTT RTLTB

RTLTT RTLTB

RBLT

RBLT


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Interface Functions for MSC with C7

TRC/BSCMSC


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SS7 MTP Connection

06& 75&%6&


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C7 MTP Connection


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C7 - ST and Multiplexor


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Signalling Network Functions


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BSSAP


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BSSAP Structure


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BSC - RBS 200 Interface Functions


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LAPD Frame

C/R = Command/ResponseEA = Extended AddressFCS = Frame Check SumInfo = Layer 3 information, RSL or OML messages, max. 249 octets plus

a LAPD headerN(R) = Receive sequence numberN(S) = Send sequence numberP/F = Poll / Final bitSAPI = Service Access Point IdentifierTEI = Terminal Endpoint Identifier


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Logical Configurations of the A-bisInterface


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2 Mbps PCM towards the RBS 200


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1.5 Mbps PCM towards the BTS


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Radio Interface Signaling Layer 3


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Managed Object Block Diagram, G12

RX

TX

TS0 TS

7

TRXC0

RX

TX

TS0 TS

7

TRXC15

IS ( UP TO 16 TRXCs)

CF TF

8 TS

8 TS

DP

CON


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TRI


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TRI Time Slot AllocationTRI Time slot Allocation

2Mb/sP.C.M.G.703

ETB - Exchange Terminal BoardTSW - Time SwitchRTT - Radio Transceiver TerminalTTS - Traffic Time slotTRXC - Transceiver Controller

01020304050607080910111213141516171819202122232425262728293031

00 SYNC.TRXC.1TTS.0-3TTS.4-7TRXC.2

TTS.4-7TTS.0-3

TRXC.3TTS.0-3TTS.4-7TRXC.4TTS.0-3TTS.4-7TRXC.5TTS.0-3TTS.4-7TRI-SIGN.TRXC.6TTS.0-3TTS.4-7TRXC.7TTS.0-3TTS.4-7TRXC.8TTS.0-3TTS.4-7TRXC.9TTS.0-3TTS.4-7TRXC.10TTS.0-3TTS.4-7

2Mb/sinternalinterface

01020304050607080910111213141516171819202122232425262728293031

00 SYNC.TRXC.1TTS.0-3TTS.4-7TRXC.2

TTS.4-7TTS.0-3

TRXC.3TTS.0-3TTS.4-7TRXC.4TTS.0-3TTS.4-7TRXC.5TTS.0-3TTS.4-7UNUSEDTRXC.6TTS.0-3TTS.4-7TRXC.7TTS.0-3TTS.4-7TRXC.8TTS.0-3TTS.4-7TRXC.9TTS.0-3TTS.4-7TRXC.10TTS.0-3TTS.4-7

2Mb/sinternalinterface

01020304050607080910111213141516171819202122232425262728293031

00 TRXC.1TTS.0-3TTS.4-7UNUSEDUNUSED

UNUSEDUNUSED

UNUSEDUNUSED

TRXC.2TTS.0-3TTS.4-7UNUSEDUNUSEDUNUSEDUNUSEDUNUSEDUNUSED

TRXC.3TTS.0-3TTS.4-7UNUSEDUNUSEDUNUSEDUNUSEDUNUSEDUNUSED

TRXC.4TTS.0-3TTS.4-7UNUSEDUNUSED

RTT1

RTT2

RTT3

ETB TSW

TS 16(TO STR)

00010203

31

TRXC.1TTS.0-3TTS.4-7

UNUSED

00010203

31


UNUSED

00010203

31


UNUSED

00010203

31


UNUSED

00010203

31


UNUSED

00010203

31


UNUSED

00010203

31


UNUSED

00010203

31


UNUSED

00010203

31


UNUSED

00010203

31


UNUSED

00010203

31

UNUSED

00010203

31

UNUSED


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TRI Magazine


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Semi-Permanent Connections


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Connection of I/O Terminal and ExternalAlarms


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Cascade Connections with ETC


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Cascade Connection with Drop/InsertMultiplexor


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Drop/Insert Multiplexor


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Simplified Structure of the TG


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RBS 200 Cabinet

FCOMB Filter Combiner


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Administrative Structure (G01)


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RBS 2000 Block Diagram


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Downloading Software to the BTS

TRUTRU DRAM

ExecutableTRUApplication

DATADSP files

TRU Appl

Loaded Boot

ExecutableDXUApplication

DATA

DRAMDRAM

Fixed Boot

PROMPROM

PROM

FLASH

Fixed Boot

ECU ECU

DATA

ExecutableECUApplication

DRAMFLASH

PROM

ECU Appl

Fixed Boot

Loaded Boot

TRU Appl1

TRU Appl2

ECU Appl

Loaded Boot

DXU Appl

DXUDXU FLASHFLASH

{

BSC/OSSBSC/OSS

12 - 15 minutesBSC to DXU

{

{

20 secondsFlash to DRAM


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The PCM Link Towards BTS

Unconcentrated

31

Concentrated

0syn

1sig

2s-d

3s-d

4sig

5s-d

6s-d

7sig

8s-d

9s-d

10sig

11s-d

12s-d

0syn

1sig

2s-d

3s-d

4s-d

5s-d

6s-d

7s-d

8s-d

9s-d

10 11 12

24

3124


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Connection of Concentrated Links

IS

CON

DCPs

1..8 1..16

Concentrated

Uncon-centrated

TRXC

TRXC

TRXC

TRXC

TEI

TEI

TEI

TEI

Interface Switch

Concentrator


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Normal Configuration for a Cell with oneTRX

TCH0

TCH1

TCH2

TCH3

TCH4

TCH5

0 1 2 3 ........... 31

LAPDSIGNALING

BSC BTS

TCHO TCH1 TCH2 TCH3 TCH4 TCH5SD

CCH/8

BCCH+C

CCH

RBLT-0&&-31

TRH

GS

TRA

CF/TRXC

Spare

Spare


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LAPD Multiplexing Using 32kbps SubratePhysical Channel for a Cell With one TRX

Spare

TCH0

TCH1

0 1 2 3 ........... 31

LAPDSIGNALING

BSC BTS

TCH0 TCH1 TCH2 TCH3 TCH4 TCH5SD

CCH/8

BCCH+C

CCH

RBLT-0&&-31

TRH

GSSRS

CF/TRXC

TRASpare

TCH2

TCH4

TCH5

TCH3


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LAPD Concentration and ManagedObjects

TRH

GS

IS

CON

TRXCTX

RX

TS

TF DP

CF

TS

TX

RXTRXC


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Structure of G12

CON

Documents

bscoh03c