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Annex B. W-CDMA L2/L3 Protocols. W-CDMA UE Control Module. Control Interfaces. CS/PS Data Interfaces. USIM Module. CM Layer. RABM Layer. Control Plane. User Plane. MM Layer. (Uu Interface) W-CDMA L3. RRC Layer. W-CDMA L2 (Uu Interface). BMC Layer. PDCP Layer. USIM.
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Annex B W-CDMA L2/L3 Protocols
W-CDMA UE Control Module Control Interfaces CS/PS Data Interfaces USIM Module CM Layer RABM Layer Control Plane User Plane MM Layer (Uu Interface) W-CDMA L3 RRC Layer W-CDMA L2 (Uu Interface) BMC Layer PDCP Layer USIM RLC Layer MAC Layer CPHY Transport Channels W-CDMA PHY SW/HW W-CDMA UE 端通訊協定架構
W-CDMA NAS Protocol Nt GC DC BMC PDCP CS CPDCP RRC Layer CBMC BMC Layer PDCP Layer CRLC Radio Bearers RLC Layer Logical Channels CMAC MAC Layer UMTS AS CPHY Transport Channels W-CDMA PHY SW/HW UE 端 AS 通訊協定架構
MAC RRC PHY SW PHY BB/RF PHY 層通訊協定 • 接受上層 (RRC) 控制設定,進行相關傳輸設定與信號處理程序,並提供相關狀態資訊 • 信號傳輸控制設定 • Transport Channel Mapping Control • Radio Link Setup/Modify/Release Control • 信號傳輸功率控制與量測 • Idle/Connected/Compressed Mode Measurement • Closed Loop/Open Loop Power Control • 實體層功能程序 • Cell Search/Paging Procedures • DCH Synchronization Indication • Random Access Procedures (RACH/CPCH)
PHY SW PHY BB RF PHY 層基頻信號處理 • 由 PHY 軟體控制,依據上層 (RRC/MAC) 參數設定,進行 UMTS W-CDMA 基頻信號處理 • Transport Channel Multiplexing (CCTrCH) • Rate Matching • Physical Channel Mapping • Inner-/Outer- Interleaving • Channel Coding/Decoding • Spreading/Scrambling • Modulation/De-modulation • Frequency/Chip/Time-slot Synchronization • Macro-diversity Combining (Soft-Handover) • RF Control • 多以 PHY 硬體 (DSP/FPGA/…) 實作完成
Σ ⊕ ⊕ Σ j PHY 層基頻信號處理功能方塊 Transport Channel #1 Transport Channel #2 Transport Channel #N To RF CRC Attachment, Channel Coding, 1st Interleaving, Rate Matching CRC Attachment, Channel Coding, 1st Interleaving, Rate Matching Modulation CRC Attachment, Channel Coding, 1st Interleaving, Rate Matching Pulse Shaping Transport Channel MUX Scrambling CCTrCH I + jQ (DPDCH) Physical Channel Segmentation, 2nd Interleaving, Physical Channel Mapping PhCH #1 Spreading & Gain Weighting I PhCH #2 PhCH #3 Q PhCH #4 DPCCH
RLC RRC MAC Layer PHY MAC 層通訊協定 • 負責傳輸資料的多工處理,並機動選擇適當的傳輸格式,以支援 UMTS 動態無線資源分配。 • MAC 資料傳輸服務 • 資料多工傳輸處理 • Transport Format Selection on Transport Channels • Transport Block Multiplexing/De-multiplexing (on Common Transport Channels) • Transport Block Set Multiplexing/De-multiplexing (on Dedicated Transport Channels) • Logical Channels/Transport Channels Mapping • 其他資料傳輸處理 • Priority Handling • Traffic Volume Monitoring • Ciphering (for TM/RLC) • UE Identification (on Common Transport Channels)
MAC 資料多工傳輸處理 UE Uplink/Downlink
User Plane Control Plane SDU 2 RRC BMC CS PDCP SDU 1 Segmentation Concatenation Reassembly Sequence Control/ Duplicate Detection/ Retransmission Control RRC Add RLC Header Remove RLC Header Ciphering De-ciphering RLC H PDU 4 H PDU 3 MAC H PDU 2 H PDU 1 RLC 資料傳輸服務 • 資料切割分封處理 • Segmentation/Reassembly • Concatenation/Padding • Ciphering/De-ciphering • Re-configuration… • 資料傳輸處理 • Flow Control • In-sequence Delivery • Duplicate Detection • Retransmission • Status Report • Error Detection & Recovery • Suspend/Resume Transmission…
RLC 資料多工傳輸處理 UE Uplink/Downlink
User Plane RABM RRC PDCP Layer RLC PDCP 層通訊協定 • PDCP: Packet Data Convergence Protocol • 針對資料封包的標頭資料進行壓縮處理,以節省資料傳送量、提昇傳輸效率 • RTP/UDP/IP(v4/v6) Header: 40~60 Bytes • VoIP Packet Payload: Less than 20 Bytes • PDCP 主要服務 • Header Compression/De-compression • RTP, TCP, UDP, IPv4, IPv6,… • 壓縮方式由上層 (RRC) 指定 • Maintenance of PDCP Sequence Numbers
User Plane CBS RRC BMC Layer RLC BMC 層通訊協定 • BMC: Broadcast/Multicast Control Protocol • 接收來自基地台的廣播訊息,如 SMS-CB (SMS Cell Broadcast) 等服務 • BMC 主要服務 • UE BMC: • Storage of Cell Broadcast Messages • Message Delivery to CBS • UTRAN BMC: • Scheduling of BMC Messages • Traffic Monitoring • Radio Resource Request
Control Plane MM RRC Layer RLC BMC PDCP MAC PHY RRC 層通訊協定 • 負責動態無線資源參數設定,為 UMTS 系統能提供高速率、高效率傳輸服務的關鍵 • RRC 通訊協定主要程序及功能 • 上層通訊協定 (NAS) 指令接收與信息載送 • RRC 通訊協定信息交換 • RRC Connection Management Messages • Radio Bearer Control Messages • RRC Connection Mobility Messages • Measurement Report Messages • 下層通訊協定 (L2/L1) 控制設定與資訊彙整
UE UTRAN RRC RRC RRC Message (Measurement Report) RRC Message (Radio Resource Assignment) [Code, Freq, TF set, TFC Set, Mapping, etc] Configuration Configuration RLC RLC Configuration Configuration RLC Retransmission Control Measurement Measurement MAC MAC Configuration Configuration MAC Parameters Synchronization Measurement Measurement PHY PHY PHY Parameters Synchronization RRC 訊息交換與下層控制
W-CDMA UE Control Module PS Data CS Data CBS Ctrl MM Ctrl CC Ctrl SM Ctrl SS Ctrl GSMS Ctrl USIM Module CM Layer RABM Layer CC Sub- layer SM Sub- layer SS Sub- layer GSMS Sub- layer CBS Sub- layer MM Layer MM Sub-layer GMM Sub-layer USIM UMTS NAS Nt GC DC BMC PDCP CS W-CDMA AS Protocol UE 端 NAS 通訊協定架構
MM 層通訊協定 - MM • Circuit-switched 移動管理/註冊服務:MM • 提供 CC/SS/SMS 連線管理服務 • MM 通訊協定主要程序及功能 • MM Specific Procedures: • Location Updating, IMSI Attach… • MM Common Procedures: • TMSI Reallocation, Authentication, Identification, MM Information Signaling, Abort, IMSI Detach… • MM Connection Management Procedures: • MM Connection Establishment/Release/Re-establishment, MM Connection Information Transmit, Response to Paging… • MM Status Notification Procedure
Control Plane UE Control CM MM Layer USIM RABM RRC MM 層通訊協定 - GMM • Packet-switched 移動管理/註冊服務:GMM • 提供 SM/GSMS 連線管理服務 • GMM 通訊協定主要程序及功能 • GMM Common Procedures • P-TMSI Re-allocation, GPRS Authentication & Ciphering,GPRS Identification, GPRS Information… • GMM Specific Procedures • GPRS Attach, GPRS Detach, Routing Area Updating, Service Request, Response to Paging… • MM 層相關識別參數 • IMSI, IMEI, TMSI, P-TMSI, P-TMSI Signature, Location Area, Routing Area, Forbidden Location Areas
CM 層通訊協定 - CC • Circuit-switched 連線服務:Call Control, CC • 建立、維護或釋放 CS 通話服務 • CC 通訊協定主要程序及功能 • Call Establishment Procedures • Mobile-originated Call Establishment (Basic/Emergency), Mobile-terminated Call Establishment, Progress Notification… • Signaling Procedures (during Active State) • Dual Service Support, Multimedia Call Support, User Notification, Call Re-arrangements, DTMF Protocol Control… • Call Clearing Procedures • Mobile-initiated Clearing, Network-initiated Clearing… • Miscellaneous Procedures • In-band Tones & Announcements, Status… • Call Re-establishment Procedure
CM 層通訊協定 - SM • Packet-switched 傳輸設定服務:Session Management, SM • 進行 PS 資料傳輸服務相關設定 • SM 通訊協定主要程序及功能 • PDP Context Activation: Primary/Secondary • PDP Context Modification • PDP Context De-activation • PDP Context: PS 資料傳輸服務相關參數 • UE 端PDP 位址(x.121/IP address/…) • PS 服務網路存取節點相關位址資訊 • 資料傳輸之服務品質 (Quality of Service, QoS) 參數 • 其他服務層通訊協定相關參數
UE Control CM Layer Control Plane RABM MM GMM BMC CM 層通訊協定 - SS/GSMS/CBS • SS: Supplementary Service • 提供 CS 通話附加服務,如來電轉移、發話限制、來電限制等 • GSMS: GPRS Short Message Service • 利用 MM/GMM 連線,提供 CS/PS 短訊發送或接收服務 • CBS: Cell Broadcasting Service • 提供 UMTS 基地台廣播資訊之接收服務
Control Plane User Plane PS Data RABM Layer SM GMM RRC PDCP RABM 層通訊協定 • PS 資料傳輸通道設定 • Establishment of RABs (Radio Access Bearer) • Release of RABs • Modification of RABs • Re-establishment of RABs • PS 資料傳輸通道維護 • NSAPI (Network Service Access Point Identifier) to RAB • 連接 SM, GMM, AS (RRC) 等層通訊協定進行相關控制設定