mf001002 bss信令详解issue10辅导讲义.docx

1、mf001002 bss信令详解issue10 辅导讲义课程 MF001002BSS接口信令详解ISSUE1.0目 录课程说明 1课程介绍 1课程目标 1相关资料 1第1章 A-Interface Key Messages 1-11.1 Message Contents 1-21.1.1 ASSIGNMENT REQUEST 1-21.1.2 ASSIGNMENT COMPLETE 1-31.1.3 ASSIGNMENT FAILURE 1-41.1.4 HANDOVER REQUEST 1-51.1.5 HANDOVER REQUEST ACKNOWLEDGE 1-71.1.6 HANDOV

2、ER REQUIRED 1-81.1.7 HANDOVER REQUIRED REJECT 1-91.1.8 HANDOVER COMMAND 1-101.1.9 HANDOVER COMPLETE 1-101.1.10 HANDOVER FAILURE 1-101.1.11 HANDOVER PERFORMED 1-111.1.12 PAGING 1-121.1.13 CLEAR REQUEST 1-131.1.14 CLEAR COMMAND 1-131.1.15 CLASSMARK REQUEST 1-141.1.16 CLASSMARK UPDATE 1-141.1.17 CIPHER

3、 MODE COMMAND 1-141.1.18 CIPHER MODE COMPLETE 1-151.1.19 CIPHER MODE REJECT 1-151.1.20 COMPLETE LAYER 3 INFORMATION 1-161.2 Signaling element coding 1-161.3 Message Type 1-191.3.1 Channel Type 1-221.3.2 Layer 3 Header Information 1-301.3.3 Priority 1-301.3.4 Circuit Identity Code 1-311.3.5 Downlink

4、DTX Flag 1-321.3.6 Interference Band To Be Used 1-321.3.7 Classmark Information Type 2 1-331.3.8 Group Call Reference 1-331.3.9 Talker Flag 1-341.3.10 LSA Access Control Suppression 1-341.3.11 RR Cause 1-341.3.12 Cell Identifier 1-341.3.13 Chosen Channel 1-361.3.14 Chosen Encryption Algorithm 1-381.

5、3.15 Circuit Pool 1-381.3.16 Speech Version 1-431.3.17 LSA Identifier 1-431.3.18 Cause 1-431.3.19 Circuit Pool List 1-471.3.20 Encryption Information 1-471.3.21 Classmark Information Type 1 1-481.3.22 Classmark Information Type 3 1-491.3.23 Current Channel Type 1 1-491.3.24 LSA Information 1-501.3.2

6、5 Old BSS to New BSS information 1-521.3.26 Configuration Evolution Indication 1-531.3.27 Response Request 1-531.3.28 Cell Identifier List 1-541.3.29 Queuing Indicator 1-581.3.30 Layer 3 Information 1-591.3.31 IMSI 1-591.3.32 TMSI 1-591.3.33 Channel Needed 1-601.3.34 eMLPP Priority 1-601.3.35 Cipher

7、 Response Mode 1-611.3.36 Layer 3 Message Contents 1-611.3.37 LSA Identifier List 1-611.3.38 APDU 1-62第2章 Abis-Interface Key Messages 2-632.1 Message Contents 2-632.1.1 CHANNEL REQUIRED 2-632.1.2 PAGING COMMAND 2-642.1.3 CHANNEL ACTIVATION 2-642.1.4 CHANNEL ACTIVATION ACKNOWLEDGE 2-662.1.5 CHANNEL A

8、CTIVATION NEGATIVE ACKNOWLEDGE 2-672.1.6 IMMEDIATE ASSIGN COMMAND 2-672.1.7 CONNECTION FAILURE INDICATION 2-672.1.8 ERROR INDICATION 2-682.1.9 ENCRYPTION COMMAND 2-682.1.10 HANDOVER DETECTION 2-692.1.11 MODE MODIFY 2-692.1.12 MODE MODIFY ACKNOWLEDGE 2-702.1.13 MODE MODIFY NEGATIVE ACKNOWLEDGE 2-702.

9、1.14 ESTABLISH INDICATION 2-702.2 Signaling element coding 2-712.2.1 Message discriminator 2-712.2.2 MESSAGE TYPE 2-722.2.3 Channel Number 2-742.2.4 Request Reference 2-752.2.5 Access Delay 2-752.2.6 Physical Context 2-752.2.7 Paging Group 2-762.2.8 MS Identity 2-762.2.9 Channel Needed 2-762.2.10 eM

10、LPP Priority 2-772.2.11 Activation Type 2-772.2.12 Channel Mode 2-782.2.13 Channel Identification 2-802.2.14 Encryption information 2-812.2.15 Handover reference 2-822.2.16 BS Power 2-822.2.17 MS Power 2-822.2.18 Timing Advance 2-832.2.19 MS Power Parameters 2-832.2.20 BS Power Parameters 2-842.2.21

11、 SACCH Information 2-842.2.22 UIC 2-852.2.23 Main channel reference 2-862.2.24 MultiRate configuration 2-862.2.25 MultiRate Control 2-862.2.26 Supported Code Types 2-872.2.27 Frame Number 2-892.2.28 Cause 2-892.2.29 Full Immediate Assign Info 2-932.2.30 Link Identifier 2-942.2.31 RLM Cause 2-942.2.3

12、2 L3 Information (message name) 2-95课程说明课程介绍本课程介绍了GSM系统中A接口、Abis接口的各种消息的格式、各域的含义及用途，是学习GSM系统的基础。本课程的主要内容如下：A接口消息汇总、各消息内容详细解释。Abis接口消息汇总、各消息内容详细解释。课程目标完成本课程的学习后，您应该能够： 掌握各信令的组成和用途 能够结合信令内容，分析网络问题相关资料BSS信令分析手册V4.0Chapter 1 A-Interface Key MessagesThere is no general rule for the order of signaling ele

13、ments: it happens that the same elements appear in various orders depending on the message. The messages of A-interface described here are based on Phase 2+ GSM 0808 version 7.6.0 Release 1998.The key BSSMAP messages are listed in the following table:Message nameReferenceASSIGNMENT REQUEST1.1.1ASSIG

14、NMENT COMPLETE1.1.2ASSIGNMENT FAILURE1.1.3HANDOVER REQUEST1.1.4HANDOVER REQUEST ACKNOWLEDGE1.1.5HANDOVER REQUIRED1.1.6HANDOVER REQUIRED REJECT1.1.7HANDOVER COMMAND1.1.8HANDOVER COMPLETE1.1.9HANDOVER FAILURE1.1.10HANDOVER PERFORMED1.1.11PAGING1.1.12CLEAR REQUEST1.1.13CLEAR COMMAND1.1.14CLASSMARK REQU

15、EST1.1.15CLASSMARK UPDATE1.1.16CIPHER MODE COMMAND1.1.17CIPHER MODE COMPLETE1.1.18CIPHER MODE REJECT1.1.19COMPLETE LAYER 3 INFORMATION1.1.201.1 Message Contents1.1.1 ASSIGNMENT REQUESTThis message is sent from the MSC to the BSS via the relevant SCCP connection in order to request the BSS to assign

16、radio resource(s), the attributes of which are defined within the message.The message may also include the terrestrial circuit to be used.INFORMATION ELEMENTREFERENCEDIRECTIONTYPELENMessage Type1.2.1MSC-BSS M1Channel Type1.2.2MSC-BSS M5-10Layer 3 Header Information1.2.3MSC-BSS O (3) 4Priority1.2.4MS

17、C-BSS O3Circuit Identity Code 1.2.5MSC-BSS O (1) 3Downlink DTX Flag 1.2.6MSC-BSS O (2)2Interference Band To Be Used1.2.7MSC-BSS O2Classmark Information 2 1.2.8MSC-BSS O (4)4-5Group Call Reference1.2.9MSC-BSS O (5)3-8Talker Flag 1.2.10MSC-BSS O (6)1LSA Access Control Suppression1.2.11MSC-BSSO (8)21.

18、This element is included when the MSC allocates the A-interface circuits and the channel type Information Element indicates speech or data, and only in those cases.2. This element may be included in the case of a speech TCH, and only in this case. If not included, this has no impact on the DTX funct

19、ion in the BSS.3. This information element doesnt serve any useful purpose. MSCs should not send the information element unless it is required by the recipients (due to the need to interwork with older versions of the protocol). It is expected that in future versions of 08.08, this information eleme

20、nt will be deleted from this message.4. These elements may be included if the information is known by the MSC.5. This may be included by the MSC for either a talking or listening subscriber in a group call.6. This information element is included for group calls, when this is included it indicates th

21、at the mobile is a talker in the call else the mobile is a listener.7. The information is indicated by the MSC if known.8. This information element is included if LSA access control function shall be suppressed in the BSS.1.1.2 ASSIGNMENT COMPLETEThe ASSIGNMENT COMPLETE message is sent from the BSS

22、to the MSC and indicates that the requested assignment has been completed correctly.The message is sent via the BSSAP SCCP connection associated with the dedicated resource(s). INFORMATION ELEMENT REFERENCEDIRECTIONTYPELENMessage Type 1.2.1 BSS-MSC M1RR Cause 1.2.12 BSS-MSC O2Circuit Identity Code 1

23、.2.5 BSS-MSC O (4)3Cell Identifier 1.2.13 BSS-MSC O (1) 3-10Chosen Channel 1.2.14 BSS-MSC O (3)2Chosen Encryption Algorithm 1.2.15 BSS-MSC O (5)2Circuit Pool 1.2.16 BSS-MSC O (2)2Speech Version (Chosen) 1.2.17 BSS-MSC O (6)2LSA Identifier 1.2.18 BSS-MSC O (7)51. The cell identifier is used to indica

24、te a new cell, if during the assignment the serving cell has changed.2. Shall be included when several circuit pools are present on the BSS MSC interface and a circuit was allocated by the ASSIGNMENT REQUEST message.3. Included at least when the channel rate/type choice was done by the BSS.4. The Ci

25、rcuit Identity Code information element is included mandatory by the BSS if the BSS allocates the A-interface circuits and a circuit is needed.5. Included at least when the encryption algorithm has been changed by the BSS.6. Included at least when the speech version choice was done by the BSS.7. Sha

26、ll be included if current LSA in the serving cell has been identified (see GSM 03.73). Not included means that there is no current LSA in the serving cell.1.1.3 ASSIGNMENT FAILUREThe ASSIGNMENT FAILURE message is sent from the BSS to the MSC via the relevant SCCP connection. It indicates that there

27、has been a failure in the assignment process at the BSS and that the assignment procedure has been aborted.INFORMATION ELEMENT REFERENCEDIRECTIONTYPELENMessage Type 1.2.1 BSS-MSC M 1 Cause 1.2.19 BSS-MSC M 3-4 RR Cause 1.2.12 BSS-MSC O 2 Circuit Pool 1.2.16 BSS-MSC O (1)2Circuit Pool List 1.2.20 BSS

28、-MSC O (2)V1. Shall be included when several circuit pools are present on the BSS MSC interface.2. May be included when cause is circuit pool mismatch or switch circuit pool to indicate circuit pool preferences.Typical Cause values are:- radio interface message failure,- O and M intervention,- equip

29、ment failure,- no radio resource available,- requested terrestrial resource unavailable,- requested transcoding/rate adaption unavailable,- terrestrial resource already allocated,- invalid message contents,- radio interface failure - reversion to old channel,- directed retry,- circuit pool mismatch,

30、- switch circuit pool.requested speech version unavailable.1.1.4 HANDOVER REQUESTThis message is sent from the MSC to the BSS via the relevant SCCP connection to indicate that the MS is to be handed over to that BSS.INFORMATION ELEMENTREFERENCEDIRECTIONTYPELENMessage Type 1.2.1 MSC-BSS M 1 Channel Type 1.2.2 MSC-BSS M5-10 Encryption Information 1.2.21 MSC-BSS M (1)3-nClassmark Information 1 Or 1.2.22 MSC-BSS M# 2 Classmark Information 2 1.2.8 MSC-BSS M (