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上海大唐移动通信设备有限公司 2003.12

GSM 移动通信系统原理培训讲义 有线接口信令协议. 上海大唐移动通信设备有限公司 2003.12. Abis 接口信令. Channel activation. Channel required. Channel request. Channel activation ack. Immediate assign command. Immediate assignment. SABM(cm_serv_req). establish indication. UA(cm_serv_req). Data request(CM service accept).

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上海大唐移动通信设备有限公司 2003.12

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  1. GSM移动通信系统原理培训讲义 有线接口信令协议 上海大唐移动通信设备有限公司 2003.12

  2. Abis接口信令

  3. Channel activation Channel required Channel request Channel activation ack Immediate assign command Immediate assignment SABM(cm_serv_req) establish indication UA(cm_serv_req) Data request(CM service accept) CM service accept Setup Data Ind(Setup) Data request(Call proceeding) Call proceeding 主叫流程（一） MS BTS BSC

  4. Channel activation Channel activation ack Data req.(Assignment command) Assignment command SABM establish indication UA Assignment Complete Data Ind.(Assignment Complete) Deactivate SACCH Release request(local end rel) Release confirm RF Channle release RF Channel release ack Alerting Data req.(Alerting) Data req.(Connect) Connect Connect acknowledge Data Ind.(Connect acknowledge) 主叫流程（二） MS BTS BSC

  5. Data Ind.(Disconnect) Disconnect Release Data Req.(Release) Release Complete Data Ind.(Release Complete) Data Req.(Channel Release) Channel Release Deactivate SACCH DISC Release Indication UA RF Channle release RF Channel release ack 主叫流程（三） MS BTS BSC

  6. Data Ind.(Disconnect) Disconnect Release Data Req.(Release) Release Complete Data Ind.(Release Complete) Data Req.(Channel Release) Channel Release Deactivate SACCH DISC Release Indication UA RF Channle release RF Channel release ack 主叫流程（四） MS BTS BSC

  7. Paging Request Paging Command Channel activation Channel required Channel request Channel activation ack Immediate assign command Immediate assignment SABM(pag_resp) establish indication UA(pag_resp) Data req.(CM service accept) CM service accept Data req.(Setup) Setup Data ind.(Call confirm) Call confirm 被叫流程（一） MS BTS BSC

  8. Channel activation Channel activation ack Data req.(Assignment command) Assignment command SABM establish indication UA Assignment Complete Data ind.(Assignment Complete) Deactivate SACCH Release request Release confirm RF Channle release RF Channel release ack Alerting Data ind.(Alerting) Data ind.(Connect) Connect Data req.(Connect acknowledge) Connect acknowledge 被叫流程（二） MS BTS BSC

  9. Data req.(HO command) Release Confirmation Channel activation RF Channel Release Handover command Measurement result Measurementreport Channel activation ack SABM Release Request(local) Handover detection RF Channel Release ACK UA Handover complete Handover access Data ind.(HO complete) establish indication Physical information 小区间切换 BTS2 BTS1 BSC MS

  10. A 接 口 信 令

  11. A接口信令

  12. ASSIGNMENT REQUEST ASSIGNMENT COMMAND ASSIGNMENT COMPLETE ASSIGNMENT COMPLETE A接口信令 MS BSS MSC T10 RR Cause Normal ASSIGNMENT COMPLETE RR Cause Circuit Identity Code Cell Identifier Chosen Channel Circuit Pool Speech Version(Chosen) ASSIGNMENT REQUEST Channel Type Priority Circuit Identity Code(MSC Allocate) Downlink DTX Flag Interference Band To Be Used Classmark Information 2 Channel Type Speech/data indicator:Speech/Data/Signaling Channel rate and type:Full rate(Half rate)/SDCCH Permitted speech version indication:FRV1/FRV2(EFR) Priority Preemption Capability Indicator Priority Level:1~14 Queueing Allowed Indicator:Allowed/not Allowed Preemption Vulnerability Indicator Circuit Identity Code a-k:PCM No.,max 2048 xxxxx:timeslot No. Interference Band To Be Used bitmap format for band1~band5 Circuit Pool No1:FRV1;FR Data 12/6/3.6kbit/s No4:FRV2; FR Data 12/6/3.6kbit/s N05:FRV1;FRV2; FR Data 12/6/3.6kbit/s Classmark Information 2 Phase1/Phase2 MS Controlled Early Classmark Sending RF Power Capability Pseudo Synchronization Capability Supplementary Service Screening Indication MT SMS pt. To pt. Capability Frequency Capability(GSM900 Extended?) A5/1;A5.2;A5/3 Classmark 3

  13. ASSIGNMENT REQUEST ASSIGNMENT FAILURE ASSIGNMENT COMMAND ASSIGNMENT FAILURE ASSIGNMENT FAILURE ASSIGNMENT FAILURE A接口信令 MS BSS MSC T10 ASSIGNMENT FAILURE Cause RR Cause Circuit Pool Circuit Pool List Cause Requested terrestrial resource unavailable Requested transcoding/rate adaption available Requested speech version unavailable Circuit pool mismatch Switch circuit pool/Terrestrial circuit already allocated Equipment failure/No radio resource available/O&M intervention Radio interface message failure Radio interface failure,reversion to old channel

  14. CLEAR COMPLETE CLEAR COMMAND CLEAR REQUEST A接口信令 MS BSS MSC Clear Request Cause Cause Radio interface message failure O&M intervention Protocol error between BSS and MSC Preemption Clear Command Cause Cause Call control O&M intervention Equipment failure Handover successful Protocol error between BSS and MSC

  15. HANDOVER REQUIRED HANDOVER FAILURE HANDOVER FAILURE HANDOVER COMMAND HANDOVER REQUEST ACK HANDOVER COMPLETE HANDOVER DETECT CLEAR COMMAND CLEAR COMPLETE HANDOVER COMMAND HANDOVER REQUEST CLEAR COMMAND CLEAR COMPLETE HANDOVER FAILURE HANDOVER REQUIRED REJECT HANDOVER REQUIED(1) HANDOVER ACCESS HANDOVER COMPLETE CLEAR REQUEST A接口信令 MS BSS MSC BSS T7 T8 Cause Requested terrestrial resource unavailable Ciphering algorithm not supported Requested transcoding/rate adaptation unavaliable Requested Speech version unavailable Circuit pool mismatch Switch circuit pool O&M intervention Equipment failure No radio resource available Invalid cell Radio interface failure,reversion to old channel Terrestrial resource already allocated Configuration Envolution Indication SMI:Subsequent Modification Indication, whether modification is allowed or not Classmark Information 1 Phase1/Phase2 MS Controlled Early Classmark Sending RF Power Capability A5/1 Cause O&M intervention Equipment failure Requested terrestrial resource unavailable Invalid message contents Requested transcoding/rate adaptation unavaliable Cause Uplink Quality Uplink Strength Downlink Quality Downlink Strength Distance Better Cell Traffic Response toMSC Invocation Directed Retry Switch Circuit Pool Preemption O&M Intervention Classmark Information 3 Multi-bands supported,E-GSM/DCS1800/R-GSM RF Power Capability for each band A5/4,A5/5,A5/6,A5/7 UCS2 Response Request Request HANDOVER REQUIRED REJECT if result in no handover Cell Identifier List Max n,which is set by O&M,from 1 to 16, list is given in order of preference Handover Required Reject Cause Handover Failure Cause RR Cause Circuit Pool Circuit Pool List Handover Command Layer3 Information Cell Identifier Handover Request Channel Type Encryption Information Classmark Information 1 or 2 Cell Identifier(Serving) Priority Circuit Identity Code Downlink DTX Flag Cell Identifier(Target) Interference Band To Be Used Cause Classmark Information 3 Current Channel Speech version(Used) Config. Evolution Ind Chosen Encryption Algorithm(Serving) Handover Request ACK Layer3 Information Chosen Channel Chosen Encryption Algorithm Circuit Pool Circuit Identity Code Handover Required Cause Response Request Cell Identifier List(Preferred) Circuit Pool List Current Channel Speech Version(Used) Queueing Indicator Handover Detect No information element except for message type Handover Complete RR Cause

  16. HANDOVER FAILURE HANDOVER COMMAND HANDOVER COMPLETE HANDOVER ACCESS HANDOVER PERFORMED CLEAR REQUEST CLEAR COMMAND CLEAR COMPLETE A接口信令 MS BSS MSC T8 Handover Performed Cause Cell Identifier Chosen Channel Chosen Encryption Algorithm Speech Version(Chosen) Cause Uplink Quality Uplink Strength Downlink Quality Downlink Strength Distance Better Cell Traffic Directed Retry Switch Circuit Pool Preemption O&M Intervention

  17. ASSIGNMENT FAILURE ASSIGNMENT COMPLETE ASSIGNMENT COMMAND HANDOVER PERFORMED CLEAR REQUEST CLEAR COMMAND CLEAR COMPLETE A接口信令 MS BSS MSC T10 Handover Performed Cause Cell Identifier Chosen Channel Chosen Encryption Algorithm Speech Version(Chosen) Cause Uplink Quality Uplink Strength Downlink Quality Downlink Strength Switch Circuit Pool O&M Intervention

  18. PAGING REQUEST TYPE 1/2/3 PAGING A接口信令 MS BSS MSC Channel Needed Any channel(default) SDCCH TCH/F TCH/H or TCH/F Cell Identifier List Cell Identification discrimination: 1.CGI 2.LAC+CI 3.CI 4.No Cell 5.LAI 6.LAC 7.All Cells on the BSS Paging IMSI TMSI Cell Identifier List Channel Needed

  19. COMPLETE LAYER 3 INFORMATION CM REESTABLISHMENT REQUEST LOCATION UPDATING REQUEST CM SERVICE REQUEST PAGING RESPONSE IMSI DETACH Extract classmark information A接口信令 MS BSS MSC Complete Layer 3 Information Cell Identifier Layer 3 Information Chosen Channel

  20. CLASSMARK UPDATE(handover) CLASSMARK REQUEST CLASSMARK CHANGE CLASSMARK ENQUIRY CLASSMARK UPDATE (option suppress or delay) A接口信令 MS BSS MSC Classmark update Classmark Information 2 Classmark Information 3

  21. CIPHERING MODE COMMAND CIPHERING MODE COMPLETE CIPHER MODE COMMAND CIPHER MODE COMPLETE CIPHER MODE REJECT A接口信令 MS BSS MSC Encryption Information Permitted algorithm:A5/1,A5/2, A5/3,A5/4, A5/5,A5/6, A5/7 Key Cipher Mode Reject Cause Cipher Mode Command Encryption Information Cipher Response Mode Cipher Mode Complete Layer 3 message contents Chosen Encryption Algorithm Cipher response Mode IMSI must (not) be included by MS Cause Ciphering algorithm not supported Invalid message contents

  22. HANDOVER REQUEST ACK ASSIGNMENT COMPLETE ASSIGNMENT REQUEST ASSIGNMENT FAILURE QUEUING INDICATION QUEUING INDICATION HANDOVER REQUEST HANDOVER FAILURE HANDOVER FAILURE CLEAR REQUEST(?) A接口信令 BSS MSC T11 BSS MSC Queuing Indication only Message type Tqho

  23. BLOCK/UNBLOCK BLOCK/UNBLOCK ACK BLOCK/UNBLOCK BLOCK/UNBLOCK ACK Notify to O&M A接口信令 MS BSS MSC T1 T1 Cause No radio resource available O&M intervention Equipment failure BLOCK Circuit Identity Code Cause Connection Release Requested UNBLOCK Circuit Identity Code BLOCK/UNBLOCK ACKNOWLEDGE Circuit Identity Code

  24. CIRCUIT GROUP BLOCK/UNBLOCK CIRCUIT GROUP BLOCK/UNBLOCK ACK CIRCUIT GROUP BLOCK/UNBLOCK CIRCUIT GROUP BLOCK/UNBLOCK ACK Notify to O&M A接口信令 MS BSS MSC T20 T20 Cause No radio resource available O&M intervention Equipment failure Circuit Identity Code List Range,Max 255,from CIC to CIC+255 Status,no indication/block CIRCUIT GROUP UNBLOCK Circuit Identity Code Circuit Identity Code List CIRCUIT GROUP BLOCK Cause Circuit Identity Code Circuit Identity Code List CIRCUIT GROUP BLOCK/UNBLOCK ACKNOWLEDGE Circuit Identity Code Circuit Identity Code List

  25. BLOCK/UNBLOCK BLOCK/UNBLOCK ACK BLOCK/UNBLOCK BLOCK/UNBLOCK ACK Notify to O&M A接口信令 MS BSS MSC T21 T21 Cause No radio resource available O&M intervention Equipment failure BLOCK Circuit Identity Code Cause Connection Release Requested UNBLOCK Circuit Identity Code BLOCK/UNBLOCK ACKNOWLEDGE Circuit Identity Code

  26. CIRCUIT GROUP BLOCK/UNBLOCK CIRCUIT GROUP BLOCK/UNBLOCK ACK CIRCUIT GROUP BLOCK/UNBLOCK CIRCUIT GROUP BLOCK/UNBLOCK ACK Notify to O&M A接口信令 MS BSS MSC T22 T22 Cause No radio resource available O&M intervention Equipment failure Circuit Identity Code List Range,Max 255,from CIC to CIC+255 Status,no indication/block CIRCUIT GROUP UNBLOCK Circuit Identity Code Circuit Identity Code List CIRCUIT GROUP BLOCK Cause Circuit Identity Code Circuit Identity Code List CIRCUIT GROUP BLOCK/UNBLOCK ACKNOWLEDGE Circuit Identity Code Circuit Identity Code List

  27. RESOURCE REQUEST RESOURCE INDICATION(1/2/3/4) RESOURCE INDICATION(1) condition met RESOURCE INDICATION(3) A接口信令 MS BSS MSC Period Resource Indication Resource Indication Method Resource Avaliable Cell Identifier Total Resource Accessible Resource Indication Method 1:Spontaneous resource information expected 2:One single resource infoprmation expected 3:Periodic resource information expected 4: No resource information expected Resource Avaliable Band1~Band5, number of idle FR/HR Extended Resource Indication SM:Subsequent Mode(only valid forRIM=2) 0--Method 4 1--if RIM of before is 1 or 3, no changed; otherwise, 4 TARR:Total Accessible Resource Requested Periodicity 100ms~25500ms Resource Request Periodicity Resource Indication Method Cell Identifier Extended Resource Indication

  28. RESET RESET ACK RESET (1) RESET (n) A接口信令 MS BSS MSC T16 T13 T16 Cause O&M intervention Equipment failure Reset Cause

  29. RESET RESET ACK RESET (1) RESET (n) A接口信令 MS BSS MSC T4 T2 T4 Reset Cause Cause O&M intervention Equipment failure

  30. RESET CIRCUIT UNEQUIPPED CIRCUIT RESET CIRCUIT ACK RESET CIRCUIT(1) RESET CIRCUIT(n) A接口信令 MS BSS MSC T19 T19 Reset Circuit Circuit Identity Code Cause Cause O&M intervention Equipment failure Reset Circuit ACK/Unequipped Circuit Circuit Identity Code

  31. RESET CIRCUIT UNEQUIPPED CIRCUIT RESET CIRCUIT ACK RESET CIRCUIT(1) RESET CIRCUIT(n) A接口信令 MS BSS MSC T12 T12 Reset Circuit Circuit Identity Code Cause Cause O&M intervention Equipment failure Reset Circuit ACK/Unequipped Circuit Circuit Identity Code

  32. HANDOVER CANDIDATE ENQUIRE HANDOVER CANDIDATE RESPONSE HANDOVER REQUIRED(n) HANDOVER REQUIRED(1) A接口信令 MS BSS MSC Handover Candidate Enquire Number of MSs Cell Identifier List Cell Identifier Handover Candidate Response Number of MSs Cell Identifier

  33. OVERLOAD(ignored) OVERLOAD OVERLOAD A接口信令 BSS MSC Decrease random access traffic by 1 step T17 T18 Decrease random access traffic by 1 step Increase random access traffic by 1 step Cause Processor overload O&M intervention Overload Cause

  34. OVERLOAD(ignored) OVERLOAD OVERLOAD A接口信令 BSS MSC Decrease MSC originated traffic by 1 step T5 T6 Decrease MSC originated traffic by 1 step Increase MSC originated traffic by 1 step Cause Processor overload O&M intervention CCCH overload Overload Cause Cell Identifier

  35. DTAP MESSAGE(SAPI in DLCI0) SAPI “n” REJECT A接口信令 MS BSS MSC SAPI “n” Reject DLCI Cause Cause O&M intervention Processor overload BSS not equipped MS not equipped

  36. UNEQUIPPED CIRCUIT UNEQUIPPED CIRCUIT CONFUSION CONFUSION A接口信令 MS BSS MSC Cause Invalid message contents Information element or field missing Incorrect value Unknown message type Unknown information element Protocol error between BSS and MSC Invalid cell Confusion Cause Diagnostics Unequipped Circuit Circuit Identity Code Circuit Identity Code List

  37. LOAD INDICATION LOAD INDICATION A接口信令 BSS MSC BSS Cause O&M intervention Equipment failure No radio resource available Processor overload Traffic load Resource Situation number of SDCCH channel in each interference band number of TCH/F channel in each interference band Time Indication 0:No value valid 255:infinite others:10s~2540s Load Indication Time Indication Cell Identifier Cell Identifier List(Target) Resource Situation (if without, the indicated cell is not able to perform incoming handover request) Cause

  38. A接口信令

  39. MAP 接 口 信 令

  40. MAP所应用的接口 • VLR-HLR 用户信息、位置信息 • MSC-HLR 查询路由 • VLR-VLR 用户信息 • MSC-MSC 切换、短消息 • MSC-EIR 设备鉴权

  41. MAP • GSM网移动系统实体 • 归属位置寄存器(HLR) • 拜访位置寄存器(VLR) • 移动业务交换中心(MSC) • 设备识别积存器(EIR) • 关口局MSC(GMSC)

  42. 动态数据库VLR • VLR (Visitor Location Register)：拜访位置寄存器。实际上是一个数据库，储存用户信息，主要包括： • MSRN (Mobile Station Roaming Number) : 移动台漫游号码 • TMSI (Temporary Mobile Subscriber Identification) : 临时移动用户身份 • 移动台登记的位置区（LAC） • 与补充业务有关的数据 • 可分配一个MSRN，还可以分配一个TMSI用于用户的身份保密。

  43. 静态数据库HLR • HLR (Home Location Register)：归属位置寄存器。实际上是一个数据库，主要储存二类数据： • 用户数据，主要包括： • 用户的身份IMSI (International Mobile Subscriber Identification) • 用户ISDN号码 • VLR地址 • 用户的位置信息

  44. MAP的应用 • GSM NO.7信令网的等级结构 HSTP HSTP HSTP LSTP LSTP SP SP SP

  45. 信令网和话路网的对应关系 TMSC1 HSTP H&LSTP TMSC1 TMSC2 LSTP TMSC2 MSC MSC 话路 信令链

  46. 信令网的寻址方式 • MAP是专为GSM要求而设计的，是TCAP的一个客户，位于TCAP之上。MAP协议支持一个物理实体同时和几个物理实体的通信，主要功能是支持移动用户的位置登记、位置删除、用户业务管理、参数管理、漫游、越区切换、鉴权、保密数据传输等。CIC表示该消息属于哪条话音电路（它的长度是12比特，因此一条数字信令链路理论上可载送212 =4096条话路的信令消息）。在GSM信令网SP、STP间传送MAP信令消息必须有SCCP的支持，SCCP的地址是由GT、DPC、SSN组成。

  47. MAP支持的程序 • ---位置登记/删除 • ---切换 • ---复原 • ---操作维护 • ---补充业务 • ---短消息处理 • ---呼叫处理 • IMEI的管理

  48. 位置登记/删除 • VLR HLR PVLR Send Authen Send Authen Ack Update-location Cancel-location Insert Sub.Data Cancel-location Ack Insert Sub.Date Ack Update-location Ack

  49. 故障后复原程序——VLR复原 • VLR HLR Provide Roaming Number Provide Roaming Number Ack. Send Authentication Send Authentication Ack. Restore Data

  50. 故障后复原程序——VLR复原 Insert Sub. Data Insert Sub. Data Ack Restore Data Ack.

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