應急通信Tetra標準架構與接口技術

1、 TETRA ARCHITECTURE AND INTERFACESAgenda1. TETRA Architecture and Standard Interfaces2. Description of Individual Interface Network Aspects and Scenarios Services Protocols3. TETRA Standard Gateways Features4. Network Management System5. Control Room Gateway6. Conclusions Typical TETRA NetworkTETRAI

2、nfrastructure.Remote Line Station (Despatcher) BSBSBSBSBSBSAnother TETRANetworkNMS1a1b35642CentralNetworkManagementPSTN, ISDN PDNTM V+D Air Interface Air Interface Uplink DownlinkVDDVVVDDVTDMAFRAMETS 2TS 3TS 4TS 1TS = Time SlotTETRAInfrastructure Air Interface (AI) VariantsNumber ofTimeslots 1 2 3 4

3、NoProtection 7.2 14.4 21.6 28.8LowProtection 4.8 9.614.419.2HighProtection 2.4 4.8 7.2 9.6BANDWIDTH ON DEMAND TM V+D AI Data Rate Capacities (kbit/s) TM V+D AI Services Speech Data Circuit mode Packet mode Short data service Supplementary Services Call Control Mobility Management Security ServicesTM

4、 V+D AI Protocol Stack Layer 3Layer 1Layer 2 Packet Data Mobility Management Call Control Short Data Supplementary Services Speech Circuit Mode DataMMMobile/Base Link Control EntityCMCEPDUSER PLANECONTROL PLANELogical Link ControlMedium Access ControlPhysical LayerDirect Mode AI Scenarios1. INDIVIDU

5、AL CALL2. GROUP CALL NETWORK3. DUAL WATCH NETWORKAUTHORIZINGMOBILE STATION4. MANAGED DIRECT MODE4Example: ISI Group Call Configuration CONTROLLING ANDPARTICIPATINGNETWORKPARTICIPATING NETWORKISIISIREQUESTING ANDPARTICIPATING NETWORKDM AI Protocol StackLayer 1Layer 2Layer 3Physical LayerData Link Lay

6、erDirect Mode Call ControlShort DataIntrinsic ServicesCall ControlCONTROL PLANEUSER PLANESpeechCircuit Mode Data Direct Mode AI Scenarios (contd.)REPEATER5. DIRECT MODE REPEATER NETWORKGATEWAY6. DIRECT MODE GATEWAY NETWORKREP/GW7. DIRECT MODE REPEATER/ GATEWAY NETWORKREP/GW/AUTHORIZINGMOBILE 8. MANA

7、GED REPEATER/ GATEWAYSCN: Switching Control NodeNMS: Network Management SystemBS: Base Station Services Supported by ISIRegionalTo other Local SCN To Other Regional SCNPeripheral Equipment Interface (PEI)MT2TE2PEITETRAINFRASTRUCTUREPEI Protocol LayersV. 24/V. 28PPPIPTNP1TCPAPPLICATIONSTO MOBILE STAT

8、IONPEIDOMAIN UDP ISI : Protocol StackTETRA INFRASTRUCTURE 2TETRA INFRASTRUCTURE 1 ITU-T Rec. X.229ISO/IEC 11582ISO/IEC 11572TETRA ANFtonc TETRA operationITU-T Rec. X.229ISO/IEC 11582ISO/IEC 11572Layer 1ETS 300 402-1 and 2PRIVATE SIGNALLING SYSTEM 1 (PSS1) USED IN ISI STANDARDSpecific TETRA Operation

9、ETS 300 402-1 and 2Layer 1 TETRA ANFSpecific TETRA OperationIP Inter-working InterfaceBGBGGGSNGGSNInternal BackboneInternal BackboneGiGpGiPacket Data NetworkInter-Network BackboneHDBVDBTETRAInfrastructure 2HDBVDBGnGnHost ISITETRAInfrastructure 1 TETRA as an IP NetworkInternetIP Switching/Routing Net

10、workTETRA InfrastructureCorporateIntranetIPIP IPVoice/IPWAPTerminal WAP GWGPSBluetoothIP IP IPIPNetwork Management Center ControlRoom ServerDispatcherIPLANServerDatabaseContentProviderStandard API and ApplicationsWAPIP Packet DataAVLTelemetryCircuitMode Data Internet AccessProprietaryTETRA ADAPTATIO

11、N LAYERSDSApplications Standard API Bearer ServiceNetwork Management (1)(Internal)AuthenticationCentreNMS ClientLANLANSCNServerServerDisks21”21”21”21”15”15”NMC21”LANClientNNetwork Management (2) (external) Performance Management Fault or Maintenance Management Subscriber Management Accounting Manage

12、ment Security Management TETRA 1TETRA 3TETRA 2CNMNMCNMCNMCISIISIISIPSTN GatewayPSTNGWPSTNISDN GatewayISDNGW2B+D30B+2DISDN ControlRoom GatewayGPSDispatchersGSMTETRAICCSAVL ControllerInternetCorporateIntranetPSTN / ISDNLegacyRadiosDatabases IT System Call Logging CCTV Paging Fax / Email Voice Recordin

13、gOthersControl Room Gateway (1)InternetServerControl Room Gateway (2) Not standardized because of different applications requirements from different user sectors Current trend is to include Flexible Application Programming Interfaces (APIs) which: Facilitate Programming at a higher abstraction level

14、 Allow integration of radio functionality in different systems Guarantee flexibility of control center configuration Allow GUIs customization Management of following functionalities through API using API libraries or through messages : Audio parameters Individual and Group Users Supplementary services Alarms Gateway Engine API ClientApplication Server To TETRA Switch InterfaceTO control room application clientConclusions TETRA Architectures and Interfaces allow: Spectrally-efficient feature rich communication Choice of tru