2022年GSM协议栈设计结构英文.docx

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1、精品学习资源GSM协议栈设计结构1 Architecture of GSMAPISMSSSCCMMCCBSIMRRLAPL1PALControl informationSignaling information2 CC2.1 SummaryIn GSM protocol, both SS protocol and CC protocol are sub-protocol of CM protocol. The CC entity uses box to communicate with API, MM and RR. Each CC entity shall communicate with

2、the correspondent peer entity using its own MM connection.欢迎下载精品学习资源APICCMMRR2.2 Object Model DiagramIn CC module, different CC context needs interwork with others, so all CC context are organized in a queue. Every CC context will manage a call.2.3 Objects DescriptionThe functions of CC entity as fo

3、llowing: Call establishment procedures;Call clearing procedures;Call information phase procedures; Miscellaneous procedures.DTMF manage;User notification;欢迎下载精品学习资源In call Modify manage;CRSS function manage.2.4 CC State ChartSETUP欢迎下载精品学习资源CC_U01CC_T303_EXP CC_SETUP_REQCC_U0MM_REESTAB_ERRCCC_T308_EX

4、PFIRSTCC_RELCMPLT_REQCC_U6CC_CALL_CONF_REQCC_U9欢迎下载精品学习资源MM_ESTAB_CNFRELEASECC_U19CC_CONNECT_REQ欢迎下载精品学习资源CC_U8CC_U11欢迎下载精品学习资源U11CC_RELCMPLT_REQCC_DISC_REQexcept CC_REESTCC_GENEMM_ESTAB_ERRU11CC_T313_EXP欢迎下载精品学习资源欢迎下载精品学习资源RELEASEexcept CC_U19,CC_U0CC_RELEASE_CMPLCC_REESET欢迎下载精品学习资源欢迎下载精品学习资源CC_T30

5、5_EXPU19MM_RELEASE_IND 除CC_10 外U19欢迎下载精品学习资源CC_REL_REQ欢迎下载精品学习资源CC_U1CC_T303_EXPDISCONNECTDISCONNECT 除 U0,U12,U19RELEASECC_U12MM_REESTAB_CNF欢迎下载精品学习资源CC_T310_EXP欢迎下载精品学习资源CC_DISC_REQCAPI_NO_DISC_REQ欢迎下载精品学习资源CONNECTCC_T323_EXPMO ModifyCC_U10MM_RELEASE_IND CC_CONNECT_ACK欢迎下载精品学习资源FSM state U0U01CC st

6、ate CC_U0 CC_U01DescribeNo call existsMM Connection pending, This state exists for a mobile originating call, when the mobile station requests the establishment of a MM connection.U1CC_U1CC has send SETUPCC_U3CC has received CALL PROCEEDINGCC_U4CC has received ALERTU6CC_U6MS has received SETUPU8CC_U

7、8MS has sent CONNECT.U9CC_U9MShas sent CALL CONFIRMU9CC_U7MS has sent ALERTINGU10CC_U26MO modifying.CC_U27MT modifying.CC_U10The call active, refer U26, U27, REESET.REESETMM connection is disconnected and just reestablishing, the CC U10.U11CC_U11This state exists when the mobile station has requeste

8、d the networkclear the end-to-end connection if any and is waiting for a response.toU12CC_U12This state exists when the mobile station has received an invitationtodisconnectbecausethenetworkhasdisconnectedtheend-to-end欢迎下载精品学习资源U19CC_U19connection if any.This state exists when the MS has requested t

9、he network to release and iswaiting for a response.GENEDifferent CC state will do same respond to message will deal in virtualFSM state GENE.Call states at the mobile station side of the interfaceThe states which may exist on the mobile station side of the radio interface are defined in this clause.

10、NOTE:States U0.1, U0.2, U0.3, U0.4, U0.5, U0.6, U26, and U27 are GSM specific. All other states are ITU-T defined.U0000000NullNo call exists欢迎下载精品学习资源U0.1000010MMConnectionpendingThis state exists for amobile originating call, when the mobilestationrequests theestablishmentofaMM connection欢迎下载精品学习资源

11、U1000001Call initiatedThis state exists for amobile originating call, when theMS requests call establishment from the network欢迎下载精品学习资源U3000011Mobileoriginatingcall proceedingThis state exists for a mobile originating call when the mobile station has received acknowledgement that the network has rec

12、eived all call information necessary to effect call establishment.欢迎下载精品学习资源U4000100Call deliveredThis state exists for amobile originating call, when thecallingmobilestation has received an indicationthat remote user alerting has been initiatedU6000110Call presentthis state exists for a mobile term

13、inatingcall when themobile station has received a call establishment request but has not yet responded.U7000111Call receivedThis state exists for a mobile terminating call when themobilestationhas indicatedalertingbut has not yet answeredU8001000Connect RequestThis state exists for a mobile terminat

14、ing call, when themobile station has answered the call and is waiting to be awarded the call欢迎下载精品学习资源U9001001Mobileterminatingcall confirmedThis state exists for a mobile terminating call when the mobile station has sent acknowledgement that the mobile stationhas received all callinformationnecessa

15、ry to effect call establishment欢迎下载精品学习资源U10001010ActiveThis state exists for a mobile terminating call when theMS has answered the call. This state exists for a mobile originating call when the MS has received an indication that the remote user has answered the callU11001011Disconnect requestThis s

16、tate exists when the mobile station has requestedthe network to clear the end-to-end connection ifany and is waiting for a response.欢迎下载精品学习资源U12001100DisconnectindicationThis state exists when the mobile station has received aninvitationtodisconnectbecausethenetworkhasU19010011Release requestdiscon

17、nected the end-to-end connection if any.This state exists when the MS has requested the network to release and is waiting for a response.U26011010MobilemodifyoriginatingU27011011MobilemodifyThis state exists when the mobile station has sent a request to the network for a new mode but has not yet rec

18、eived an answer.terminating This state exists when the mobile station has received a request from the network for a new mode and has not yetsent a response to this request.3 SS3.1 SummaryIn GSM protocol,SS protocol is a sub-protocolof CMprotocol. The SS entity uses box to communicate with API and MM

19、. Each SS entity shall communicate with the correspondent peer entity using its own MM connection.APISSMM欢迎下载精品学习资源3.2 Object Model Diagram1APInSSn1MMIn MS, different SS entity needs know other SS entities, so all SS entities are organized in a queue,Every SS entity describes in protocol is mapped t

20、o a SS context.3.3 Objects DescriptionThe functions of SS entity as following: SS Interrogate for Line ID,CF,CB,CW; CF register, Erasure;CF,CB Activate, Deactivate; CB PasswordRegiste; USSD manage.欢迎下载精品学习资源4 SMS4.1 SummaryAPISM_RL MOSM_RL MTSM_CL MOSM_CL MTMMCMMPNote:In GSM mode, SM_CL use MM entit

21、y to comminute, In GPRS mode, use MMP. SMS_CB will performed by CB module.4.2 Object Model Diagram欢迎下载精品学习资源4.3 Objects DescriptionSMS module will perform the function of SM RL and SM RL, it combine the SMS entity and GSMS entity.A SMR entity communicates with A SMR entity in the SMC, give the SM_TL

22、capabilitytoexchange SM_TL message.SMC entity is in CM sublayer, carrying SMR data.SM_TL ： SMSsending and MEMORYAVAILABLEnotify,SMSreceivingand STATUS REPORT receiving, alphabet supporting, saving message to SIM and reading message from SIM, contact SMS.5 MMAbbreviationArfcn The absolute RF channel

23、number CMConnection ManagementCKSNCiphering Key Sequence Number FSMFiniteState MachineGPRSGeneral Packet Radio ServiceIMSIInternational Mobile Subscriber Identity KcCiphering keyLACLocation Area Code LAI Location Area Identity LANLocalArea Network LLC Low Layer Compatibility MMMobile Management MMCC

24、ircuit Switch MM MMPPacket Switch MMOSI Open System InterconnectionRRRadio Resource Management SIM Subscriber Identity ModuleTMSITemporary Mobile Subscriber Identity5.1 SummaryMobilemanagementsublayer locate in Level 3 of protocolstack, and middle of Level 3；The main function of the Mobility Managem

25、ent sublayer is to support the mobility of user terminals, such as informing the network of its present location and providing user identity confidentiality.A further functionof the MMsublayer is to provide connection management services to the different entities of the upper Connection Management C

26、M sublayer.All the MM procedures described in this clause can only be performed if a RR connection hasbeen established between the MS and the network. Else, the MMsublayer has to initiatethe establishment of a RR connection.In Figure2.1.1 An overview of the MM sublayer protocol architecture in GSM/G

27、PRS protocol is given.欢迎下载精品学习资源APISNDCP欢迎下载精品学习资源欢迎下载精品学习资源CCSSCMSMSSM欢迎下载精品学习资源欢迎下载精品学习资源MMMMCMMP欢迎下载精品学习资源LLC欢迎下载精品学习资源RRRRSIMGRR欢迎下载精品学习资源欢迎下载精品学习资源5.2 Object Model DiagramFigure 2.1.1欢迎下载精品学习资源MMsublayer includes two objects MMCand MMP. MMsublayer is a entity. The contacts between MM entity and

28、 other entity arefollowed in Figure 2.2.1Figure 2.2.1欢迎下载精品学习资源5.3 Objects DescriptionThe object MMC fulfills the following procedure:1MM common procedures:Initiated by the network:- TMSI reallocation procedure;- authentication procedure;- identification procedure;- MM information procedure;- abort

29、procedure. Initiated by the mobile station:- IMSI detach procedure.ii) MM specific procedures:-normal location updating procedure;- periodic updating procedure;- IMSI attach procedure.iii) MM connection management procedures:These procedures are used to establish, maintain and release a MMconnection

30、 between the mobilestation and the network, over whichan entity of the upper CMlayer can exchange informationwith its peer. A MMconnection establishment can only be performed if no MM specific procedure is running. More than one MM connection may be active at the same time.5.4 state chartMMC Finite

31、State Machine is made of 7 state；MMC_GENEState deals with some message that need to be treated withwhereas dont treated with in 6 normal state.6 normal state is :MMC_NULLinitiative state. power on ，MM stand in the state ；MMC_IDLEidle state， MM start all procedure in the state ；MMC_WRRCstate that wai

32、t the RR connection response.MMC_WNKRstate that wait the network response message.MMC_CNTDMM connected ；No less than one connection have been established. MMC_WNKCstate that wait the network command.6 RR6.1 RRISXRSystem eXecutive Real timeFSMFiniteState MachineRRDRadio Resource Dedicated modeRRIRadi

33、o Resource Idle modeRRI_PRadio Resource Idle mode PLMN Selection RRI_CRadio Resource Idle mode Cell Selection L1Layer 1 of GSM/GPRS system欢迎下载精品学习资源MMMobile ManagementLAPLink Access Protocol6.1.1 SummaryRRI module is part of Radio Resource Manage, main function is responsible for PLMN selection, Cel

34、l selection, Cell reselection, all System Message received and Measurement Report sent. Its positioning in GSM protocol stack as below:APICBSIMMMRRRRIRRDLAPL1CFigure 1 RRI s location in stack欢迎下载精品学习资源6.1.2 Object Model DiagramThe RRI have two objects, which implement differentfunctions withindepend

35、ent finitestate machine. The relationship between two objects RRI_C and RRI_P and the other extern objects displays in the figure below.11CBM1MAPI1SIM1RR11111RRI_C11RRI_P11111111RRD11L1CLAPFigure 1 RRI s OMD欢迎下载精品学习资源6.1.3 Objects DescriptionThe object RRI_P completes the following functions: Automa

36、tic and manual PLMN selection.Select designated PLMN.PLMN reselection procedure. PLMN selection mode setting. Report available PLMN list.The object RRI_C completes the following functions: Normal c ell selection.Normal reselection.Neighbour cellsynchronizationprocedure. Plmn scan procedure.Cell chan

37、ged in connected mode.Acquisition of system information on BCCH and PBCCH. Received system information on DCCH.Measurements control and reporting.Forwarding of paging information to MM layer.Sending quality report.6.1.4 State chartrri_PNULL: InitState Wiat for a Start Command.rri_PWCS: Wait for a Ce

38、ll from CSel. Psel has sent a Search to Csel and is waiting for it. rri_PCAMP: PSel is camped on a the selected Plmn.rri_PLTD: Limited Service state.rri_PNSVC: No service is detected sleep with a awake timer. rri_PCONN: In Connected Mode some restriction for MMI fucntion apply.rri_CNULL: InitialStat

39、e. Can only receive a request fron PSel to start search a Plmn. rri_CRSSI: RSSI measurements are requested and Result is Waited for initial Cell selection. rri_CSYNCHR: Wait for a possible Synchro on a Cell. L1 will report the first possible synchro when found.rri_CSVERIF: Wait for receiveing All Sy

40、sinfo for Selecting a Cell. rri_CRVERIF: Wait for receiveing All Sysinfo for reselectiong a Cell.rri_CCAMPED: Camped on a Main Cell can be on Any cell ie Emergency only.rri_CRESEL: Current serving Cell is not suitable any more. Wait for other cell information to be able to switch Cell.rri_CCONN: MS

41、has engaged a circuit swicth connexion. Reselection is prohibited here. rri_CENDCO: MS has Terminatedthe circuit swicth connexion. Trys to select the Cell on witch we last werein Connected.欢迎下载精品学习资源6.2 RRD6.2.1 SummaryIn the GSM/GPRS stack, RRD is under MM, and up LAPand L1. RRD provides MMwith ser

42、vices of RR connection establishment , management and data transmitting.RRD is short for RR in dedicated mode .RRD communicates with MM , LAP and L1 with mailboxes Fig below describes RRD s position in stackMMRRRRDDLL1LAPL1RRD in stack6.2.2 Object Model DiagramIn practice , RRD module is mapped as o

43、ne RRD instance. See RRD OMD Fig1MM11RRD1111LAPL1OMD ofRRD2 below.欢迎下载精品学习资源6.2.3 Object DescriptionRRD procedures provide the following services: ：1. establishment/release of multiframe mode on data link layer connections;2. transfer of messages on any data link layer connection;3. indication of temporary unavailability of transmission suspension, resuming;4. indication of loss of RR connection5. handover to maintain the RR connection;6. setting/change of the transmission mode on the physical channels, including change of type of chan