GSM培训_A_signaling.pptVIP

01-8-13 上海大唐移动通信设备有限公司 01-8-13 吉林省移动通信公司网测技术培训 上海大唐移动通信设备有限公司 上海徳立天通信技术有限公司 2002.1 GSM移动通信系统原理培训讲义 （六） A 接 口 信 令 A接口信令 A接口信令 MS BSS MSC ASSIGNMENT REQUEST ASSIGNMENT COMMAND ASSIGNMENT COMPLETE ASSIGNMENT COMPLETE ASSIGNMENT REQUEST Channel Type Priority Circuit Identity Code(MSC Allocate) Downlink DTX Flag Interference Band To Be Used Classmark Information 2 ASSIGNMENT COMPLETE RR Cause Circuit Identity Code Cell Identifier Chosen Channel Circuit Pool Speech Version(Chosen) Channel Type Speech/data indicator:Speech/Data/Signaling Channel rate and type:Full rate(Half rate)/SDCCH Permitted speech version indication:FRV1/FRV2(EFR) Priority Preemption Capability Indicator Priority Level:1~14 Queueing Allowed Indicator:Allowed/not Allowed Preemption Vulnerability Indicator Circuit Identity Code a-k:PCM No.,max 2048 xxxxx:timeslot No. Interference Band To Be Used bitmap format for band1~band5 RR Cause Normal Circuit Pool No1:FRV1;FR Data 12/6/3.6kbit/s No4:FRV2; FR Data 12/6/3.6kbit/s N05:FRV1;FRV2; FR Data 12/6/3.6kbit/s Classmark Information 2 Phase1/Phase2 MS Controlled Early Classmark Sending RF Power Capability Pseudo Synchronization Capability Supplementary Service Screening Indication MT SMS pt. To pt. Capability Frequency Capability(GSM900 Extended?) A5/1;A5.2;A5/3 Classmark 3 T10 A接口信令 MS BSS MSC ASSIGNMENT REQUEST ASSIGNMENT COMMAND ASSIGNMENT FAILURE ASSIGNMENT FAILURE ASSIGNMENT FAILURE Cause RR Cause Circuit Pool Circuit Pool List Cause Requested terrestrial resource unavailable Requested transcoding/rate adaption available Requested speech version unavailable Circuit pool mismatch Switch circuit pool/Terrestrial circuit already allocated Equipment failure/No radio resource available/OM intervention Radio interface message failure Radio interface failure,reversion to old channel T10 ASSIGNMENT FAILURE ASSIGNMENT FAILURE A接口信令 MS BSS MSC Clear Request Cause Cause Radio interface message failure OM intervention Protocol error between BSS and MSC Preemption