发布时间 : 星期五 文章路测信令宝典更新完毕开始阅读79e3198c48d7c1c709a14574
目 录
一、第三层信息(GSM Layer 3 )的分类 .......................................................................................................... 3
1. CC层 ............................................................................................................................................................ 3 2、MM层 ......................................................................................................................................................... 4 3、RR层 .......................................................................................................................................................... 4 二、接续流程 ........................................................................................................................................................... 5
2.1、移动主叫流程 .......................................................................................................................................... 5
2.1.1、信道请求 Channel Request(Rach)MS?BTS .................................................................... 7 2.1.2 申请信道 Channel Required( BTS?BSC) ............................................................................... 8 2.1.3 信道激活 Channel Activation (BSC?BTS) ................................................................................ 8 2.1.4信道激活证实 Channel Activation ACK(BTS?BSC) ................................................................ 8 2.1.5 立即指配命令 immediate assignment (BSC?BTS) ................................................................... 8 2.1.6 立即指配 immediate assignment (BTS?MS) AGCH ................................................................ 8 2.1.7 CM业务请求 CM service request (MS?BTS?BSC?MSC) ............................................... 9 2.1.8 无编号确认 UA(SDCCH) ............................................................................................................. 9 2.1.9 鉴权 Authentication Request MSC?BSC?BTS?MS ......................................................... 9 2.1.10 TMSI再分配命令 TMSI Reallocation ..................................................................................... 10 2.1.11 建立 Setup .................................................................................................................................. 10 2.1.12呼叫接续 Call Proceeding ......................................................................................................... 10 2.1.13指配请求 Assigment Activation BSC?BTS ........................................................................11 2.1.14 信道激活 Assigment Activation ACK BTS?BSC ...............................................................11 2.1.15 分配命令 Assigment Command ................................................................................................11 2.1.16 SABM(设置异步平衡模式) Layer2 (FACCH) .........................................................11 2.1.17 建立指示 Establish Indication BTS?BSC ............................................................................. 12 2.1.19 分配完成 Assigment Complete ................................................................................................ 12 2.21 振铃提醒 Alerting ................................................................................................................. 12 2.22 连接 Connect ......................................................................................................................... 12 2.1.24测量报告Measurement Report ................................................................................................. 12 2.1.25撤销连接 Disconnect .................................................................................................................. 12 2.1.26 释放 Release .............................................................................................................................. 13 2.1.27 释放完成 Release Complete ..................................................................................................... 13 2.1.28 清除命令 Clear command ........................................................................................................ 13 2.1.29 释放信道 Channel Release ....................................................................................................... 13 2.1.30 DEACTIVE_SACCH(慢速随路控制信道) ......................................................................... 13 2.1.31 DISC ............................................................................................................................................. 13 2.1.32 UA ............................................................................................................................................. 13 2.1.33 释放指示 ................................................................................................................................... 13 2.1.34 RF信道释放 ................................................................................................................................ 13 2.1.35 RF信道释放确认 ........................................................................................................................ 13 2.1.36 清除完成 ..................................................................................................................................... 13 2.1.37 SCCP释放 ................................................................................................................................... 13 2.1.38 SCCP释放确认 ........................................................................................................................... 13
2.2、手机被叫流程的区别 ............................................................................................................................ 14 三、第三层(Layer 3)信令详解 ........................................................................................................................ 16
1、 System Information Type1 ................................................................................................................... 16 2、 System Information Type2 ................................................................................................................... 17 3、 System Information Type2ter .............................................................................................................. 18 4、 System Information Type 3 .................................................................................................................. 19 5、 System Information Type 4 .................................................................................................................. 21 6、 System Information Type 5 .................................................................................................................. 22 7、 System Information Type 5ter ............................................................................................................. 23 8、 System Information Type 6 .................................................................................................................. 23 9、 System Information Type 7、8 ............................................................................................................ 24 10、 Paging Requst type1 ........................................................................................................................ 24 11、 Synch Channel Information ................................................................................................................. 25 12、 其他: ............................................................................................................................................. 25 四、常见原因值 ..................................................................................................................................................... 29
1、Channel Release信令里面的Cause(事件号) ................................................................................... 29 编号 ................................................................................................................................................................. 30 原因 ................................................................................................................................................................. 30 2、disconnect断开原因 ................................................................................................................................. 31
一、第三层信息(GSM Layer 3 )的分类
GSM移动无线接口第三层的信息有很多种,而我们在路测中主要是处理一些故障,所以一般只显示常用的几种,包括无线资源管理(RR)移动性管理(MM)、呼叫控制(CC)三方面信息。 1. CC层
CC层的主要功能为建立、维持和释放呼叫: a、有关呼叫建立的信息(Call Establishment): Alerting:振铃信息,上下行。从网络到主叫移动台或从被叫移动台到网络,用来指示被叫手机启动告警(即回铃音)。包括进展指示及用户信息等
Call confirmed:呼叫确认,该信息由被叫移动台发出,用来确证收到呼叫请求;
Call proceeding:呼叫进程,该信息由网络发向主叫移动台,指示被请求的呼叫建立信息已经被接收,不会再接收更多的呼叫建立信息。
Connect:连接,从网络到主叫移动台或从被叫移动台到网络,用来指示连接被接受;
Connect Acknowledge:连接确认,从网络到被叫移动台或主叫移动台到网络, 指示移动台得到一个呼叫(连接完成);
Energency Setup:紧急建立,由移动台发出,用来启动一个紧急呼叫的建立; Progress:进展,从网络到移动台,指示呼叫的进程; Setup:建立,上下行,指示启动呼叫建立; b、呼叫信息状态(Call Information Phase)
Modify:修改,上下行,请求改变呼叫的承载能力;
Modify Complete:修改完成,指示对呼叫承载能力修改的完成;
Modify Reject:修改拒绝,上下行,指示改变呼叫的承载能力请求的失败; User Information:用户信息,由移动台发向网络来传输信息到远端用户或由网络发向移动台传输从远端用户来的信息
c、呼叫清除(Call Clearing)
Disconnect:断连,从移动台到网络请求清除端到端的连接,或从网络到移动台指示端到端的连接已经被清除了;
Release:释放,上下行,指示发该信息的设备将要释放TI(处理识别码),接收到该信息的设备等发送释放完成信息后释放TI(处理识别码)接收到该信息的设备将要释放TI(处理识别码) d、与附加业务有关的呼叫(Call Related SS) Facility:设施 Hold:保持
Hold Acknowledge:保持确认 Hold Reject:保持拒绝 Retrieve:恢复通话
Retrieve Acknowledge:恢复确认 Retrieve Reject:恢复拒绝 e、其它信息
Congestion Control:拥塞控制,上下行,指示在传输用户信息时建立和中止流量控制。 Notify:通知,上下行,指示信息属于呼叫
Status:状态,上下行,用来响应状态查询信息或报告某些确定的错误信息 Status Enquiry:状态查询,上下行,用来请求状态信息4 Start DTMF:启动双音多频,从移动台到网络 Stop DTMF:停止双音多频,从移动台到网络
Stop DTMF Acknowledge:停止双音多频证实,从网络到移动台bbs.4g
Start DTMF Acknowledge:启动双音多频证实,从网络到移动台 Start DTMF Reject:启动双音多频拒绝,从网络到移动台
2、MM层
MM层的功能主要为位置管理:通信 a、注册(Registration)
IMSI Detatch Indication:IMSI分离指示,由移动台发往网络,在网络中设置一个无效指示 Location Updating Accept:位置更新接收,网络发向移动台,指示更新或IMSI(国际移动用户识别码)的附着完成。 Location Updating Reject:位置更新拒绝,网络到移动台,指示更新或IMSI(国际 V移动用户识别码)的附着失败。
b、连接管理(Connection Management)
CM Service Accept:CM业务接受,从网络到移动台,指示被请求的业务已经被接受 CM Service Reject:CM业务拒绝,从网络到移动台,指示被请求的业务不能提供 CM Service Abort:CM业务中断,从网络到移动台,指示被CM的业务中断 CM Service Request:CM业务请求,从移动台到网络通信论 CM Restablishment Request:CM重建请求 Abort:中断,网络到移动台 c、其它信息
MM_Status:MM状态 3、RR层
RR层的主要功能为在无线接口上管理传输路径及切换: a、信道建立
Additional Assignment:附加指配
Immediate Assignment:立即指配, 网络给移动台分配一个SDCCH ,(只包含一个MS指配信息),包括指配信道的描述、\信道请求\的信息字段和接收到\信道请求\帧的帧号、最初的时间提前量、起始时间指示(可选).3 Immediate Assignment Extended:立即指配扩展(同时包含两个MS指配信息),同立即指配扩展. Immediate Assignment Reject:立即指配拒绝 b、分配信道
Assignment Command:指配命令,网络发向移动台,指示移动台改变当前信道配置,切换到分配的专用信道,启动低层连接
Assignment Complete:指配完成,指示主信令链路成功建立.通
Assignment Failure:指配失败,包括指配失败的原因道的特征;需进行通信的新小区特性,包括允许测量程序中所要求的MSb预知同步信息(如BSIC和BCCH频率);功率命令;切换参考号码、可选的起始时间指示 Handover Complete:切换完成,MS发向网络,指示切换成功完成,网络释放原有信道 Handover Failure:切换失败,MS发向网络,网络释放新的信道 Physical Information:物理信息,用于异步切换时同步
c、信道释放
Channel Release:信道释放,包括RR原因指示、BA范围 Partial Release:局部释放
Partial Ralease Complete:局部释放完成
d、寻呼3G网络Paging Request Type 1:寻呼请求类型1,网络给两个移动台发寻呼,包括寻呼模式、移动台1和2需要的信道、移动识别1、移动识别2等
Paging Request Type 2:寻呼请求类型2,网络给三个移动台发寻呼,包括寻呼模式、移动台1和2需要的信道、移动识别1、移动识别2、移动识别3等