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Copyright2003,ZTECORPORATIONCopyright2003,ZTECORPORATIONCopyright2003,ZTECORPORATIONCopyright2003,ZTECORPORATION主要内容移动台呼叫处理过程移动台始呼移动台被叫Copyright2003,ZTECORPORATION移动台呼叫处理过程加电初始化状态空闲状态系统接入状态业务信道状态MS充分获得系统定时MS收到PCH消息需要证实或响应；发起呼叫或注册MS转向业务信道MS结束使用业务信道收到除始呼消息和寻呼响应消息之外的对ACH上发送的消息的证实MS空闲切换或者无法受到PCH消息Copyright2003,ZTECORPORATION主要内容移动台呼叫处理过程移动台始呼移动台被叫Copyright2003,ZTECORPORATION移动台始呼MobileStationBaseStation•Detectsuser-initiatedcallSwitchCopyright2003,ZTECORPORATION移动台始呼MobileStationBaseStation•Detectsuser-initiatedcall•SendsOriginationMessageACCESSSwitchCopyright2003,ZTECORPORATION移动台始呼MobileStationBaseStation•Detectsuser-initiatedcall•SendsOriginationMessageACCESS•SendsmessagewiththisinformationtotheswitchSwitchCopyright2003,ZTECORPORATION移动台始呼MobileStationBaseStation•Detectsuser-initiatedcall•SendsOriginationMessageACCESS•Sendsmessagewiththisinformationtotheswitch•SendsBaseStationAcknowledge-mentOrderSwitchPAGINGCopyright2003,ZTECORPORATION•Stopsprobing移动台始呼MobileStationBaseStation•Detectsuser-initiatedcall•SendsOriginationMessageACCESS•Sendsmessagewiththisinformationtotheswitch•SendsBaseStationAcknowledge-mentOrderSwitchPAGINGcmservicerequestCopyright2003,ZTECORPORATION移动台始呼•Stopsprobing•AllocatesresourcesMobileStationBaseStation•Detectsuser-initiatedcall•SendsOriginationMessageACCESS•Sendsmessagewiththisinformationtotheswitch•SendsBaseStationAcknowledge-mentOrderPAGINGSwitchCopyright2003,ZTECORPORATION移动台始呼•Stopsprobing•AllocatesresourcesMobileStationBaseStation•Detectsuser-initiatedcall•SendsOriginationMessageACCESS•Sendsmessagewiththisinformationtotheswitch•SendsBaseStationAcknowledge-mentOrderAsignmentRequestPAGING•SetsupTrafficChannelSwitchCopyright2003,ZTECORPORATION移动台始呼•Stopsprobing•AllocatesresourcesMobileStationBaseStation•Detectsuser-initiatedcall•SendsOriginationMessageACCESS•Sendsmessagewiththisinformationtotheswitch•SendsBaseStationAcknowledge-mentOrderPAGING•SetsupTrafficChannel•BeginssendingnulltrafficFWTRAFFICSwitchCopyright2003,ZTECORPORATION移动台始呼•AllocatesresourcesMobileStationBaseStation•Detectsuser-initiatedcall•SendsOriginationMessageACCESS•(FWnulltrafficisarrivingbutthemobilestationdoesnotknowonwhatchannel;therefore,themobilestationcannotstartdecodingit)•Sendsmessagewiththisinformationtotheswitch•SendsBaseStationAcknowledge-mentOrderFWTRAFFICSwitch•SetsupTrafficChannel•Beginssendingnulltraffic•StopsprobingPAGINGCopyright2003,ZTECORPORATION移动台始呼•AllocatesresourcesMobileStationBaseStation•Detectsuser-initiatedcall•SendsOriginationMessageACCESS•(FWnulltrafficisarrivingbutthemobilestationdoesnotknowonwhatchannel;therefore,themobilestationcannotstartdecodingit)•Sendsmessagewiththisinformationtotheswitch•SendsBaseStationAcknowledge-mentOrderFWTRAFFIC•SendsChannelAssignmentMessagePAGINGSwitch•SetsupTrafficChannel•Beginssendingnulltraffic•StopsprobingPAGINGCopyright2003,ZTECORPORATION移动台始呼•AllocatesresourcesMobileStationBaseStation•Detectsuser-initiatedcall•SendsOriginationMessageACCESS•(FWnulltrafficisarrivingbutthemobilestationdoesnotknowonwhatchannel;therefore,themobilestationcannotstartdecodingit)•Sendsmessagewiththisinformationtotheswitch•SendsBaseStationAcknowledge-mentOrderFWTRAFFIC•SetsupTrafficChannel•SendsChannelAssignmentMessagePAGINGSwitch•SetsupTrafficChannel•Beginssendingnulltraffic•StopsprobingPAGINGCopyright2003,ZTECORPORATION移动台始呼•Allocatesresources•Detectsuser-initiatedcall•SendsOriginationMessageACCESS•(FWnulltrafficisarrivingbutthemobilestationdoesnotknowonwhatchannel;therefore,themobilestationcannotstartdecodingit)•Sendsmessagewiththisinformationtotheswitch•SendsBaseStationAcknowledge-mentOrderFWTRAFFIC•SetsupTrafficChannel•ReceivesN5m=2consecutivevalidframes•SendsChannelAssignmentMessagePAGING•SetsupTrafficChannel•Beginssendingnulltraffic•StopsprobingPAGINGMobileStationBaseStationSwitchCopyright2003,ZTECORPORATION移动台始呼•Allocatesresources•Detectsuser-initiatedcall•SendsOriginationMessageACCESS•(FWnulltrafficisarrivingbutthemobilestationdoesnotknowonwhatchannel;therefore,themobilestationcannotstartdecodingit)•Sendsmessagewiththisinformationtotheswitch•SendsBaseStationAcknowledge-mentOrderFWTRAFFIC•SetsupTrafficChannel•ReceivesN5m=2consecutivevalidframes•BeginssendingtheReverseTrafficChannelPreamble•SendsChannelAssignmentMessagePAGINGRVTRAFFIC•SetsupTrafficChannel•Beginssendingnulltraffic•StopsprobingPAGINGMobileStationBaseStationSwitchCopyright2003,ZTECORPORATION移动台始呼•AllocatesresourcesMobileStationBaseStation•Detectsuser-initiatedcall•SendsOriginationMessageACCESS•(FWnulltrafficisarrivingbutthemobilestationdoesnotknowonwhatchannel;therefore,themobilestationcannotstartdecodingit)•Sendsmessagewiththisinformationtotheswitch•SendsBaseStationAcknowledge-mentOrderFWTRAFFIC•AcquirestheReverseTrafficChannel•SetsupTrafficChannel•ReceivesN5m=2consecutivevalidframes•BeginssendingtheReverseTrafficChannelPreamble•SendsChannelAssignmentMessagePAGINGRVTRAFFICSwitch•SetsupTrafficChannel•Beginssendingnulltraffic•StopsprobingPAGINGCopyright2003,ZTECORPORATION移动台始呼•AllocatesresourcesMobileStati