【8A文】无线接口信令协议.ppt

《【8A文】无线接口信令协议.ppt》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。

1、1上海大唐移动通信设备有限公司2003.12GSM移动通信系统原理培训讲义无线接口信令协议2Um接口信令3GSM系统专用协议群DTAPDTAPDirectTransferApplicationPartBSSMAPBSSManagementApplicationPartCMCallManagementMMMobileManagementRRRadioResourceManagementSCCPSignallingConnectionControlPartMAPMobileApplicationPartTCAPTransactionCapabilityApplicationPartIS

2、UPISDNUserPartMTPMessageTransferPartCMMMRRSig.layer2Layer1(air)Sig.layer2Sig.layer1MTPSCCPBSSMAPRR(CM+MM)MSBSCMTPMTPSCCPSCCPCMMMBSSMAPTCAPMAPISUPMSCSig.layer2Layer1(air)BTS(CM)(MM)(RR)(CM)(MM)(RR)(CM)(MM)(LAPDm)(LAPDm)(LAPD)Sig.layer2Sig.layer1(LAPD)BTSMBTSMRR'BTSMBTSManagementUmInterfaceAbisI

3、nterfaceA-interfaceInter-MSCInterface4ChannelRequestEstablishmentCauseemergencycallCallre-establishLocationupdateAnswertopaging:sameaschannelneededinPagingNECI=0:MO&procedurebecompletewithSDCCHNECI=1:MOTCH/FProcedurebecompletewithSDCCHRandomReference立即指配流程MSBSSCHANNELREQUEST(1)IMMEDIATEASSIGNM

4、ENT(EXTENDED)ImmediateAssignmentL2PseudolengthProtocoldiscriminatorSkipindicationMessagetype----N(SD)forMSsidePagemodeChanneldescriptionRandomreferenceTimingadvanceMobileallocationStartingtimeIArestoctetsT3126MMRRCHANNELREQUEST(2~M+1)IMMEDIATEASSIGNMENTREJECTSABM(L3)(1)UA(L3)SABM(L3)(2~6)Proto

5、coldiscriminatorCallcontrol;callrelatedSSmessagesMobilitymanagementmessagesRadioresourcemanagementmessagesSkipindicationOtherthan0shouldbeignorePagemodeNormalpagingExtendedpagingPagingreorganizationSameasbeforeChanneldescriptionChanneltypeandTDMAoffsetSDCCH/8+SACCH/8+subchannelSDCCH/4+SACCH/4+

6、subchannelTCH/F+ACCHTNTSCHoppingchannelsinglechannel:ARFCNRFhoppingchannel:HSN+MAIORequestreferenceRandomAccessInformationT1’/T2/T3——>FNT1’=(FN/1326)mod32T2=(FN)mod26T3=(FN)mod51(FN)mod42432=51x((T3-T2)mod26)+T3+51x26xT1’MobileallocationIndexforCAStartingtimeT1’/T2/T3IArestoctetsMAIO+Mobileall

7、ocation(frequencyparametersbeforetime)ImmediateAssignmentExtendedPagemodeChanneldescription1Randomreference1Timingadvance1Channeldescription2Requestreference2Timingadvance2MobileallocationStartingtimeIArestoctetsImmediateAssignmentRejec