领导-部属交换(LMX)的回顾与展望

信令流程宝典（Ver.1）缩略语清单：Abis接口BTS到BSC之间的接口BTSBaseTranceiverSystem基站BSCBaseStationController基站控制器CDMACodeDivisionMutiAccess码分多址ECAMExtendedChannelAssignmentmessage扩展信道指配消息Ec/IoPilotenergyaccumulatedoveronePNchipperiod（Ec）tothetotalpowerspectraldesity（Io）inthereceivedbandwidth每码片的能量比上所处1.23M带宽内的总功率谱密度其中Io为有效信号+噪声在信号频带内的总功率Ec/IorEC是导频码片功率，IOr为基站前向发射总功率，它们之比表示导频功率占基站总的发射功率的百分比。EIBEraseIndicationBit擦除指示位ESCAMExtendedSupplementalChannelAssignmentMessage扩展补充信道指配消息FCHFundamentalChannel基本信道FERFrameErrorRatio误帧率FMRFrameProcessingBoard帧处理板FWTFCForwardTrifficChannel前向业务信道MSMobileStation移动台NUM_RSCCHNumberofReverseSupplementalCodechannel反向补充编码信道个数OMUOperationMaintenanceUnit操作维护PMRMPowerMeasurementReportMessage功率测量报告消息RCRadioconfiguration无线配置RxReceivedPower接收功率RVTFCReverseTrifficChannel反向业务信道SCHSupplementalChannel补充信道TxTransmitPower发射功率FFERForwardFrameErsureRate前向误帧率一.CDMA信令集合..................................................................................41.保密与识别...................................................................................42.登记.........................................................................................43.前向链路.....................................................................................44.前向链路.....................................................................................4二.系统消息概述和分类.............................................................................41.消息分类（六种必选）.........................................................................42.消息分类（七种可选）.........................................................................43.消息分类（业务态）...........................................................................5三.主叫流程及信令.................................................................................51.空闲态信令讲解及流程.........................................................................51.1.同步信道消息SyncChannelMeg............................................................51.2.接入信道消息AccessParametersMeg......................................................61.3.系统参数消息SystemParametersMeg.......................................................81.4.邻区列表消息NeighborListMeg..........................................................101.5.CDMA信道列表消息CDMAChannelListMeg..................................................121.6.扩展系统参数消息ExtendedSystemParameterMeg..........................................132.业务态信令讲解及流程........................................................................152.1.业务在线系统参数消息In-trafficSystemParameterMeg....................................152.2.邻小区列表更新消息NeighborListUpdateMeg.............................................162.3.扩展邻小区列表更新消息extendedNeighborlistupdatemeg................................163.主叫流程....................................................................................193.1.步骤1：Originationmsg.................................................................193.2.步骤1-2：手机在起呼后，发送CDMAACCESSPROBEINFO试探，要求基站响应...................213.3.步骤2：基站确认order..................................................................223.4.步骤5：基站发送扩展信道指配消息ECAM....................................................233.5.步骤6：手机发送TrafficChannelPreamable...............................................253.6.步骤7：基站确认发送ACK消息给手机......................................................253.7.步骤8：手机向基站发送ACK消息..........................................................263.8.步骤9：基站发送ServiceConnectmsg.....................................................263.9.步骤10：手机确认后建立业务信道.........................................................274.业务态中的集中消息解释......................................................................284.1.导频强度测量报告（PSMM）...............................................................284.2.功率控制消息powercontrolmsg..........................................................294.3.切换指示消息universaldirectionmsg....................................................304.4.软切换完成消息HandoffCompletionMsg...................................................324.5.功率测量报告PowerMeasurementReportMsg...............................................334.6.MS发起的释放请求.......................................................................344.7.基站确认释放请求.......................................................................354.8.释放后基站辅助完成同步.................................................................36四.无线主要指标解释..............................................................................371.接收电平RX_POWER...........................................................................372.信噪比Ec/Io................................................................................383.发射功率Tx_power...........................................................................394.误帧率FER..................................................................................39五.路测主要指标解释..............................................................................391.覆盖率......................................................................................392.掉话率......................................................................................393.呼叫建立成功率.......