OMF001006 Sistema de Sinalização GSM - BSSAP(BSS) EMERSON EDUARDO RODRIGUES.ppt

EMERSON EDUARDO RODRIGUES

EMERSON EDUARDO RODRIGUES

EMERSON EDUARDO RODRIGUES

EMERSON EDUARDO RODRIGUES
EMERSON EDUARDO RODRIGUES

EMERSON EDUARDO RODRIGUES


EMERSON EDUARDO RODRIGUES


EMERSON EDUARDO RODRIGUES


EMERSON EDUARDO RODRIGUES


EMERSON EDUARDO RODRIGUES

1. www.huawei.com
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Sistema de Sinalização -
BSSAP(BSS)

2. Page2Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Referências

31033202-BSS Signaling Analysis Manual

GSM Specification 0808

GSM Specification 0408

3. Page3Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Objetivos

Após o término deste curso, você estará apto a:

Entender a estrutura da mensagem BSSAP

Distinguir mensagens BSSMAP e DTAP

Conhecer alguns elementos de mensagens BSSMAP e
DTAP

4. Page4Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Conteúdo
1.Estrutura Funcional BSSAP
2.Menssagens Típicas
3.Detecção de Sinalização e Interface BSC

5. Page5Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Localização da BSSMAP no Diagrama
de Protocolo GSM
BSSAP
CM
MM
RR
LAPDm
Sign.
Layer1

L3
L2
L1

BTSM
MS
Um

SCCP
MTP
BTSM
RR BSSMAP
Abis
BTS MSC
A
BSC
Sign.
Layer1
Sign.
Layer1
Sign.
Layer1
RR
LAPDLAPDm LAPD
CM
MM
BSSMAP
SCCP
MTP

6. Page6Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Estrutura Funcional BSSAP
BSS
BSSAP
SCCP
DTAP BSSMAP
Distribution Function
BSSAP
SCCP
DTAP BSSMAP
A-Interface
MSC
MTP MTP
To air interface
transmission
equipments
To other
processes
within BSC
Distribution Function
To other
application
e.g. call control
BSS
OMAP
BSS
OMAP
Operation and
Maintenance
information
for PLMN O&M
centre
Operation and
Maintenance
information
for PLMN O&M
centre

7. Page7Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Estrutura Funcional BSSAP
BTS
BSC
DTAP
MM+CM(CC , SS , SMS)
MSC/VLR
RR
RR
BSSMAP

8. Page8Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Abreviação da Estrutura Funcional BSSAP

BSSAP：BSS Application Part

BSSMAP：BSS Management Application Part

DTAP：Direct Transfer Part

CM: Connection Management
–CC: Call Control
–SS: Supplementary Service
–SMS: Short Message Service

MM: Mobile Management

BSS OMAP - BSS Operation and Maintenance Application Part

SCCP：Signaling Connection Control Part

MTP：Message Transfer Part

9. Page9Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Função da DTAP e BSSMAP

DTAP

DTAP é responsável pela transferência transparente de
mensagens da L3 da MS para a MSC, ou da MSC para a MS
que não serão analisadas pela BSC. É transferida entre BSS
e MSC utilizando serviço classe 2 da SCCP (classe de
conexão orientada básica)

BSSMAP

A transmissão de mensagens BSSMAP na SCCP se dá para
que entidades funcionais de MSC e BSS troquem
informações.

10. Page10Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Funções de Sub-layer de
Distrubuição

Discriminar mensagens DTAP e BSSMAP

Distribuir as mensagens DTAP para o ponto de acesso
da L2 do link de rádio

Convergir mensagens DTAP recebidas de um link de
rádio da L2 para o link de sinalização da interface A.

11. Page11Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Componentes de Sub-layer de
Distribuição
Octet 1
Octet L+2
Octet 3
Octet 2
Octet 1
Octet 2
Octet 3
Octet 4
Octet L+3
DTAP BSSMAP
Identifier Identifier
DLCI
Length Indicator Length Indicator
Length
Indicator
L3 L3
Message Message
…
…
.
.
L3 Messages
Distribution
Data Unit
…
…
.
.

12. Page12Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Componentes de Dados de Usuário
III L3 Information
User data
I Distribution Data Unit
II Length Indication

13. Page13Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Unidade de Distribuição de Dados do
DTAP

A Unidade de Distribuição de Dados tem dois parâmetros:

Discriminador : 00000001

Data Link Connection Identity（DLCI）:

Indica o tipo de link de dados que deve ser usado na interface de
rádio para as mensagens enviadas da MSC para BSC.

Indica o tipo de link de dados na interface de rádio que apresenta
a mensagem enviada pela BSS para MSC.
Discriminator:
Bit: 8 7 6 5 4 3 2 1
0000000D
D=1 stands for transparent
transmission (DTAP)

14. Page14Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Unidade de Distribuição de Dados do
BSSMAP

As mensagens da Unidade de Distribuição de Dados do
BSSMAP só tem o discriminador. ‘D’ deve ser igual a 0
que representa transmissão não-transparente.
Discriminator:
Bit: 8 7 6 5 4 3 2 1
0000000D
D=0 stands for non-transparent
transmission (BSSAP)

15. Page15Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Conteúdo
1.Estrutura Funcional BSSAP
2.Mensagens Típicas
3.Detecção de Sinalização e Interface BSC

16. Page16Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Conteúdo
1. Mensagens Típicas
2.1 Mensagem BSSMAP
2.2 Mensagem DTAP

17. Page17Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Mensagens BSSMAP
BSS to MSCRESOURCE INDICATION
MSC to BSSRESOURCE REQUEST
BSS to MSC
HANDOVER CANDIDATE
RESPONSE
HANDOVER CANDIDATE
ENQUIRE
HANDOVER PERFORMED
UNBLOCKING ACKNOWLEDGE
UNBLOCK
BLOCKING ACKNOWLEDGE
BLOCK
Messages Name
MSC to BSS
BSS to MSC
MSC to BSS
BSS to MSC
MSC to BSS
BSS to MSC
Direction
Messages are
sent using the
connectionles
s
services of the
SCCP

18. Page18Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Mensagens BSSMAP
RESET CIRCUIT ACKNOWLEDGE
RESET CIRCUIT
OVERLOAD
RESET ACKNOWLEDGE
RESET
PAGING
Messages Name
Bi-direction
Bi-direction
Bi-direction
Bi-direction
Bi-direction
MSC to BSS
Direction
Messages are
sent using the
connectionless
services of the
SCCP

19. Page19Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Mensagens BSSMAP
MSC to BSSHO Required Reject
BSS to MSCHO Failure
MSC to BSSHO performed
BSS to MSCHO Detected
BSS to MSCHO Complete
MSC to BSSHO Command
HO Request Acknowledge
HO Required
HO Request
ASSIGNMENT FAILURE
ASSIGNMENT COMPLETE
ASSIGNMENT REQ
Messages Name
BSS to MSC
BSS to MSC
MSC to BSS
BSS to MSC
BSS to MSC
MSC to BSS
Direction
Messages are
sent using the
connection
oriented services
of the SCCP

20. Page20Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Mensagens BSSMAP
BSS to MSCSAPI“n” Reject
MSC to BSSPaging
BSS to MSCComplete L3 Message
BSS to MSCCipher Mode Reject
BSS to MSCCipher Mode Complete
Cipher Mode Command
Class mark Updated
Class Mark Request
Clear Complete
Clear Command
Clear Request
Messages Name
MSC to BSS
BSS to MSC
MSC to BSS
BSS to MSC
MSC to BSS
BSS to MSC
Direction
Messages are
sent using the
connection
oriented services
of the SCCP

21. Page21Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Conteúdo
1. Mensagens Típicas
2.1 Mensagem BSSMAP
2.2 Mensagem DTAP

22. Page22Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Mensagens DTAP
MS to NetworkIMSI detach indication
MS to NetworkIdentity response
Network to MSIdentity request
Network to MS
CM service reject
CM service accept
CM service request
CM Re-establishment request
Authentication reject
Authentication response
Authentication request
Messages Name
Network to MS
MS to Network
MS to Network
Network to MS
MS to Network
Network to MS
Direction
MM Messages

23. Page23Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Mensagens DTAP
TMSI reallocation complete
TMSI reallocation command
MM-Status
Location updating reject
Location updating accept
Location updating request
Messages Name
MS to
Network
Network to
MS
Bi-direction
Network to
MS
Network to
MS
MS to
Network
Direction
MM Messages

24. Page24Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Mensagens DTAP
Bi-directionModify reject
Bi-directionModify complete
Bi-directionModify
Emergency setup
Connect acknowledge
Connect
Call proceeding
Call confirmed
Messages Name
MS to Network
Network to Called MS/
Calling MS to Network
Called MS to Network/
Network to Calling MS
Network to Calling MS
Called MS to Network
Direction
CC Messages

25. Page25Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Mensagens DTAP
Bi-directionNotify
Congestion control
Release complete
Release
Disconnect
Setup
User information
Messages Name
Bi-direction
Bi-direction
Bi-direction
Bi-direction
Bi-direction
Bi-direction
Direction
CC Messages

26. Page26Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Mensagens DTAP
Network to MSStop DTMF acknowledge
Stop DTMF
Status enquiry
Status
Start DTMF reject
Start DTMF
acknowledge
DTMF Start DTMF
Messages Name
MS to Network
Bi-direction
Bi-direction
Network to MS
Network to MS
MS to Network
Direction
CC Messages

27. Page27Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Conteúdo
1.Estrutura Funcional BSSAP
2.Mensagens Típicas
3.Detecção de Sinalização e Interface BSC

28. Page28Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Meios de Detecção de Sinalização e
Interface da BSC

Console de Manutenção da BSC

Detecção de Interface GSM

Revisão de Detecção de Interface GSM

Detecção de Mensagem NO7

Revisão de Detecção de Mensagem NO7

Analisador de Sinalização

MA10

KC1297

29. Page29Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Comparação dos Diferentes Meios

Analisador de Sinalização

Caro, investimentos adicionais necessários.

Pode detectar todas as sinalizações da interface A e Abis da camada
física.

Detecção de Interface GSM

Nenhum equipamento ou investimento adicional é necessário.

Detecção da Interface A – detectar BSSAP e SCCP na BSC.

Detecção da Interface A-bis – detectar mensagens da L3 desta
interface

Detecção da Interface Um – detectar mensagens da L3 desta interface

30. Page30Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Especificações Relevants de GSM

GM 0808：Interface A

GM 0858：Interface A-bis

GM 0408：Interface Um

31. Thank you
www.huawei.com