CDMA信令与参数笔记

1CDMA专题笔记一、信道参数.............................................................21．同步信道...........................................................22．寻呼信道...........................................................23．前向业务信道.......................................................31)前向业务信道速率体系：...........................................32)前向业务信道消息汇总：...........................................34．接入信道...........................................................41)接入信道结构：...................................................42)接入信道消息：...................................................5二、信令.................................................................51.PagingSlot..........................................................51)CDMA信道指配：...................................................52)寻呼信道指配：...................................................62.AccessAtempt........................................................61)接入过程.........................................................63.ServiceConfigurationNegotiation....................................91)ServiceConfiguration............................................92)Negotiation......................................................93)NegotiationFlow................................................104)业务协商流程....................................................104.AddressMode........................................................111)MobileAddressMode.............................................112)相关信令消息....................................................115.CallSetup&CallRelease...........................................121)CallSetup&CallRelease.......................................122)CallFlow.......................................................123)Origination&ServiceNegotiation...............................124)Origination&ServiceOptionNegotiation........................135)Termination&ServiceNegotiation...............................146)Termination&ServiceOptionNegotiation........................157)CallRelease....................................................158)Fail&Drop.....................................................169)AccessChannel消息公共字段......................................1610)相关信令消息..................................................1711)OriginationContinuation......................................1912)PACACall.....................................................1913)PACACall相关信令............................................19三、切换................................................................201.类型分类............................................................201)空闲态切换......................................................202)软切换..........................................................213)硬切换..........................................................272一、信道参数1．同步信道用于给移动台提供时间和帧同步，只有一条消息，即同步信道消息。帧长80ms，为一个超帧，每个超帧分成3个26.667ms的帧。同步信道消息体字段：字段字段长度(bit)字段说明MSG_TYPE8消息类型，次字段基站置为00000001P_REV8协议版本级别MIN_P_REV8最小协议版本级别，手机只有高于次级别才能接入SID15系统识别码NID16网络识别码PILOT_PN9导频信号伪随机序列偏执指数LC_STATE42长码状态SYS_TIME36系统时间LP_SEC8自系统时间开启后出现的偶秒个数LTM_OFF6本地时间与系统时间的偏差DAYLT1夏时制时间指示PRAT2寻呼信道速率00/9600bit/s,01/4800bit/sCDMA_FREQ11频率分配，对CDMA信道号码分配次字段2．寻呼信道寻呼信道用于在移动台未被指配到业务信道时基站向移动台发送控制信息。寻呼信道消息体字段：消息名称（英文）消息名称备注SystemParametersMessage系统参数消息AccessParametersMessage接入参数消息NeighborListMessage邻区列表消息仅用于BandClass0：CDMA蜂窝系统CDMAChannelListMessageCDMA信道列表消息SlottedPageMessage分时隙寻呼消息用，只是为了保证兼容性而保留PageMessage寻呼消息已经过时不用，只是为了保证兼容性而保留OrderMessage指令消息ChannelAssignmentMessage信道指配消息DataBurstMessage数据突发消息AuthenticationChallengeMessage鉴权查询消息3SSDUpdateMessageSSD更新消息FeatureNotificationMessage特性通知消息ExtendedSystemParametersMessage扩展系统参数消息ExtendedNeighborListMessage扩展邻小区列表消息仅用于BandClass1：PCS系统StatusRequestMessage状态请求消息ServiceRedirectionMessage业务重指示消息GeneralPageMessage通常寻呼消息GlobalServiceRedirectionMessage总体业务重指示消息TMSIAssignmentMessageTMSI分配消息IS95A无此消息PACAMessagePACA消息IS95A无此消息ExtendedChannelAssignmentMessage扩展信道分配消息IS95A无此消息GeneralNeighborListMessage通常邻小区列表消息IS95A无此消息NullMessage无消息3．前向业务信道在业务信道工作时，基站通过前向业务信道将信令消息发送给移动台。1)前向业务信道速率体系：速率集合传输速率（bit/s）每帧比特数总数备用信息帧质量指示编码器尾196001920172128480096080882400480400812002401608214400288126712872001441125108360072155881800361216862)前向业务信道消息汇总：消息名称（英文）消息名称（中文）4OrderMessage指令消息AuthenticationChallengeMessage鉴权查询消息AlertwithInformationMessage信息提示消息DataBurstMessage数据突发消息HandoffDirectionMessage切换指示消息注1AnalogHandoffDirectionMessage模拟切换指示消息注2In_TrafficSystemParametersMessage在业务中系统参数消息NeighborListUpdateMessage相邻列表更新消息SendBurstDTMFMessage发送突发DTMF消息PowerControlParametersMessage功率控制参数消息RetrieveParametersMessage恢复参数消息SetParametersMessage设置参数消息SSDUpdateMessageSSD更新消息FlashWithInformationMessageMobileStationRegisteredMessage移动台已登记消息StatusRequestMessge状态请求消息ExtendedHandoffDirectionMessage扩展切换指示消息ServiceRequestMessage业务请求消息ServiceResponseMessage业务响应消息ServiceConnectMessage业务连接消息ServiceOptionControlMessage业务选项控制消息TMSIAssignmentMessage注3ServiceRedirectionMessage注3SupplementChannelAssignmentMessage注3PowerControlMessage注3ExtendedNeighborListUpdateMessage注3CandidateFrequencySearchRequestMessage注3CandidateFrequencySearchCo