SMS 流程和协议分析目录SMS 流程和协议分析11Reference42Definitions43 短消息的业务信元73.1有效周期（Validity Period）73.2业务中心时间戳（Service Centre Time Stamp ）73.3协议标识（Protocol Idenitifier ）73.4多条短消息的发送（More Message to send）73.5提醒短消息中心（Alerting SC）83.6消息等待（Message Wait）83.7优先级（Priority）94短消息流程94.1 移动始发短消息的基本流程94.2 移动终结短消息的基本流程125短消息异常流程145.1短消息网关错误（GT 码错误）145.3MSC 或 SGSN 错误（MSC 号段 GT 错误，未做）155.4VLR 信息获取错误165.5RR 侧的错误（无寻呼，数据传输时丢失）176短消息提醒流程206.1可及通知流程206.2MS 内存可用通知流程217协议层次228短消息传递时使用的信道239SMS 的无线接口协议239.1Short Message Transfer Layer（SM-TL）239.2Short Message Relay Layer（SM-RL）249.3CM-sublayer27SMS 流程和协议分析1 Reference0411700Point-to-point short message service support on mobile radio interface 0340720Technical realization of the Short Message Service (SMS)0341610Short Message Service Cell Broadcast0412600Short Message Service Cell Broadcast (SMSCB) support on the mobile radio interface 0339600Interface protocols for the connection of Short Message Service Centres (SMSCs) toShort Message Entities (SMEs)2 Definitionsactive MS: A switched-on mobile station with a SIM / UICC see 3GPP TS 31.101 31 module attached.alert-SC: Service element provided by a GSM/UMTS PLMN to inform an SC which has previously initiated unsuccessful short message delivery attempt(s) to a specific MS, that the MS is now recognized by the PLMN to have recovered operation.status report: SC informing the originating MS of the outcome of a short message submitted to an SME.Gateway MSC For Short Message Service (SMS-GMSC): A function of an MSC capable of receiving a short message from an SC, interrogating an HLR for routing information and SMS info, and delivering the short message to the VMSC or the SGSN of the recipient MS.Interworking MSC For Short Message Service (SMS-IWMSC): A function of an MSC capable of receiving a short message from within the PLMN and submitting it to the recipient SC.Messages-Waiting (MW): Service element that makes a PLMN store information(Messages-Waiting-Indication), listing those SCs that have made unsuccessful short message delivery attempts to MSs in that PLMN.Messages-Waiting-Indication (MWI): Data to be stored in the HLR and VLR with which an MS is associated, indicating that there is one or more messages waiting in a set of SCs to be delivered to the MS (due to unsuccessful delivery attempt(s).Messages-Waiting-Data (MWD): A part of the MWI to be stored in the HLR. MWD consists of an address list of the SCs which have messages waiting to be delivered to the MS.Mobile-services Switching Centre (MSC): The Mobile-services Switching Centre is an exchange which performs switching functions for mobile stations located in a geographical area designated as the MSC area.Mobile-Station-Memory-Capacity-Exceeded-Flag (MCEF): A part of the MWI to be stored in the HLR. MCEF is a Boolean parameter indicating if the address list of MWD contains one or more entries because an attempt to deliver a short message to an MS has failed with a cause of MS Memory Capacity Exceeded.Mobile-Station-Not-Reachable-Flag (MNRF): The part of the MWI to be stored in the VLR and the HLR. MNRF is a Boolean parameter indicating if the address list of MWD contains one or more entries because an attempt to deliver a short message to an MS has failed with a cause of Absent Subscriber.Mobile-station-Not-Reachable-for-GPRS (MNRG): The part of the MWI to be stored in the SGSN and the HLR. MNRG is a Boolean parameter indicating if the address list of MWD contains one or more entries because an attempt to deliver a short message to an MS has failed with a cause of Absent Subscriber.Mobile-Station-Not-Reachable-Reason (MNRR): The part of the MWI in the HLR which stores the reason for an MS being absent when an attempt to deliver a short message to an MS fails at the MSC with a cause of Absent Subscriber.More-Messages-To-Send (MMS): Information element offering an MS receiving a short message from an SC the information whether there are still more messages waiting to be sent from that SC to the MS. The TP-MMS element (conveyed in the Transfer layer) is copied into the RP-MMS element (conveyed in the Relay layer). It is possible with Phase 2 and later versions of MAP (3GPP TS 29.002 15) for the RP-MMS element to keep an SM transaction open between the GMSC and the MS in the case where there are more-messages-to-send. Earlier versions of MAP support the transport of theTP-MMS element.priority: Service element enabling the SC or SME to request a short message delivery attempt to an MS irrespective of whether or not the MS has been identified as temporarily absent.protocol-identifier: Information element by which the originator of a short message (either an SC or an MS) may refer to a higher layer protocol.reply path procedure: A mechanism which allows an SM