【正文】
RRC 消息在 UE與 RNC 之間交互, Node B 不處理 RRC 消息,如 圖 。在 3GPP R99 中唯一定義的廣播服務(wù),就是從 GSM 繼承而來的小區(qū)廣播短消息。 ? 重復(fù)檢測。 ? 透明 RLC 模式的數(shù)據(jù)加密。 ? UE 數(shù)據(jù)流之間的優(yōu)先級處理。 在下面的小節(jié)里,將從以下幾個方面進行描述: ? UTRAN 空中接口的協(xié)議模型 ? 無線資源控制協(xié)議 RRC Uu口的協(xié)議模型 在 3GPP Release 99 中, Uu 接口的協(xié)議棧如 圖 。 表 NBAP Class 1 的 EPs Elementary Procedure Message Successful Oute Unsuccessful Oute Response message Response message Cell Setup CELL SETUP REQUEST CELL SETUP RESPONSE CELL SETUP FAILURE Cell Reconfiguration CELL RECONFIGURATION REQUEST CELL RECONFIGURATION RESPONSE CELL RECONFIGURATION FAILURE Cell Deletion CELL DELETION REQUEST CELL DELETION RESPONSE Common Transport Channel Setup COMMON TRANSPORT CHANNEL SETUP REQUEST COMMON TRANSPORT CHANNEL SETUP RESPONSE COMMON TRANSPORT CHANNEL SETUP FAILURE Common Transport Channel Reconfiguration COMMON TRANSPORT CHANNEL RECONFIGURATION REQUEST COMMON TRANSPORT CHANNEL RECONFIGURATION RESPONSE COMMON TRANSPORT CHANNEL RECONFIGURATION FAILURE Common Transport Channel Deletion COMMON TRANSPORT CHANNEL DELETION REQUEST COMMON TRANSPORT CHANNEL DELETION RESPONSE 21 Elementary Procedure Message Successful Oute Unsuccessful Oute Response message Response message Physical Shared Channel Reconfigure [TDD] PHYSICAL SHARED CHANNEL RECONFIGURATION REQUEST PHYSICAL SHARED CHANNEL RECONFIGURATION RESPONSE PHYSICAL SHARED CHANNEL RECONFIGURATION FAILURE Audit AUDIT REQUEST AUDIT RESPONSE AUDIT FAILURE Block Resource BLOCK RESOURCE REQUEST BLOCK RESOURCE RESPONSE BLOCK RESOURCE FAILURE Radio Link Setup RADIO LINK SETUP REQUEST RADIO LINK SETUP RESPONSE RADIO LINK SETUP FAILURE System Information Update SYSTEM INFORMATION UPDATE REQUEST SYSTEM INFORMATION UPDATE RESPONSE SYSTEM INFORMATION UPDATE FAILURE Common Measurement Initiation COMMON MEASUREMENT INITIATION REQUEST COMMON MEASUREMENT INITIATION RESPONSE COMMON MEASUREMENT INITIATION FAILURE Radio Link Addition RADIO LINK ADDITION REQUEST RADIO LINK ADDITION RESPONSE RADIO LINK ADDITION FAILURE Radio Link Deletion RADIO LINK DELETION REQUEST RADIO LINK DELETION RESPONSE Synchronised Radio Link Reconfiguration Preparation RADIO LINK RECONFIGURATION PREPARE RADIO LINK RECONFIGURATION READY RADIO LINK RECONFIGURATION FAILURE Unsynchronised Radio Link Reconfiguration RADIO LINK RECONFIGURATION REQUEST RADIO LINK RECONFIGURATION RESPONSE RADIO LINK RECONFIGURATION FAILURE Dedicated Measurement Initiation DEDICATED MEASUREMENT INITIATION REQUEST DEDICATED MEASUREMENT INITIATION RESPONSE DEDICATED MEASUREMENT INITIATION FAILURE Reset RESET REQUEST RESET RESPONSE 表 NBAP Class 2 的 EPs Elementary Procedure Message Resource Status Indication RESOURCE STATUS INDICATION Audit Required AUDIT REQUIRED INDICATION Common Measurement Reporting COMMON MEASUREMENT REPORT Common Measurement Termination COMMON MEASUREMENT TERMINATION REQUEST Common Measurement Failure COMMON MEASUREMENT FAILURE INDICATION Synchronised Radio Link Reconfiguration Commit RADIO LINK RECONFIGURATION COMMIT 22 Elementary Procedure Message Synchronised Radio Link Reconfiguration Cancellation RADIO LINK RECONFIGURATION CANCELLATION Radio Link Failure RADIO LINK FAILURE INDICATION Radio Link Restoration RADIO LINK RESTORE INDICATION Dedicated Measurement Reporting DEDICATED MEASUREMENT REPORT Dedicated Measurement Termination DEDICATED MEASUREMENT TERMINATION REQUEST Dedicated Measurement Failure DEDICATED MEASUREMENT FAILURE INDICATION Downlink Power Control [FDD] DL POWER CONTROL REQUEST Compressed Mode Command [FDD] COMPRESSED MODE COMMAND Unblock Resource UNBLOCK RESOURCE INDICATION Error Indication ERROR INDICATION Downlink Power Timeslot Control [TDD] DL POWER TIMESLOT CONTROL REQUEST Radio Link Preemption RADIO LINK PREEMPTION REQUIRED INDICATION NBAP 協(xié)議的功能可以劃分為: ? Node B 邏輯操作維護功能 ? 專用 NBAP 功能 Node B 邏輯操作維護功能主要包括小區(qū)、公共信道的建立、重配置和釋放以及小區(qū)和 Node B 相關(guān)的一些測量控制,還有一些故障管理功能,例如資源的閉塞、解閉塞、復(fù)位等基本過程。 20 Iub接口控制面應(yīng)用協(xié)議 NBAP 3GPP TS 詳細(xì)描述了 NBAP 協(xié)議,本節(jié)從以下幾個方面進行描述: ? NBAP 的業(yè)務(wù) ? NBAP 的基本過程 【 NBAP 的業(yè)務(wù)】 除非在過程描述中明確指明,否則任何時刻一個協(xié)議端口最多只能有一個正在進行的與某一個 Node B 通信上下文相關(guān)的專用 NBAP 過程。 6. 上 /下行共享信道的業(yè)務(wù)管理,包括:信道分配 /取消分配、功率管理、傳輸信道管理、數(shù)據(jù)傳送。 ? Class 2:不帶響應(yīng)的基本過程。 ? RNSAP Common Transport Channel 過程 包含了控制 Iur 接口上公共傳輸信道數(shù)據(jù)流(不包括 DSCH 和 USCH)的過程。使用和 Iub接口一樣的數(shù)據(jù)幀協(xié)議進行數(shù)據(jù)傳輸,并通過 AAL2 控制信令建立數(shù)據(jù)傳輸所需要的地面承載。 13 表 RANAP Class 2 的 EPs Elementary Procedure Message RAB Release Request RAB RELEASE REQUEST Iu Release Request IU RELEASE REQUEST Relocation Detect RELOCATION DETECT Relocation Complete RELOCATION COMPLETE SRNS Data Forwarding Initiation SRNS DATA FORWARD COMMAND SRNS Context Forwarding from Source RNC to CN FORWARD SRNS CONTEXT SRNS Context Forwarding to Target RNC from CN FORWARD SRNS CONTEXT Paging PAGING Common ID COMMON ID CN Invoke Trace CN INVOKE TRACE CN Deactivate Trace CN DEACTIVATE TRACE Location Reporting Control LOCATION REPORTING CONTROL Location Report LOCATION REPORT Initial UE Message INITIAL UE MESSAGE Direct Transfer DIRECT TRANSFER Overload Control OVERLOAD Error Indication ERROR INDICATION ? Class 3:根據(jù)具體情況,可以有多條響應(yīng)消息。提供這些業(yè)務(wù)的 RANAP 功能與 UE 的 Iu 信令連接相關(guān)。 對于 IuPS來說,不包括傳輸網(wǎng)絡(luò)控制面,建立 GTP 隧道所需的 IP 地址等信息包含在 RANAP 的 RAB 指派消息中。其中 SSCF 除將 SCCP 映射到 SSCOP 外,還提供 SAAL 連接管理、鏈路狀態(tài)以及遠(yuǎn)端處理器狀態(tài)監(jiān)視等功能; SSCOP 負(fù) 責(zé)建立和釋放連接,保證信令消息的可靠傳輸; AAL5則將上層協(xié)議適配到底層 ATM 信元。 6. 安全管理,包括:數(shù)據(jù)機密性;無線接口加密;密鑰管理;數(shù)據(jù)完整性;完整性檢查;完整性密鑰管理。 7 C o r e N e t w o r k ( C N )U T R A NN o d e BN o d e BN o d e BN o d e BR N CI u I n t e r f a c eB CD o m a i nC SD o m a i ni nP SD o m a i nR N CI u C SI u P SI u B C 圖 Iu 接口示意圖 在 CN 側(cè), IuCS 和 IuPS既可以獨立在不同的設(shè)備中,也可以組合在一個設(shè)備中。但是,建 立應(yīng)用協(xié)議信令承