xev-do基礎(chǔ)介紹朗訊(已修改)
2025-01-31 08:18 本頁(yè)面
【正文】 1 1xEVDO 基礎(chǔ)介紹 2 內(nèi)容概要 ? EvDO 標(biāo)準(zhǔn)介紹 ? 信道結(jié)構(gòu) ? 技術(shù)特性 ? 發(fā)起呼叫流程 ? EvDO 網(wǎng)絡(luò)結(jié)構(gòu)簡(jiǎn)介 ? 總結(jié) 3 1xEVDO 標(biāo)準(zhǔn)系列 ? 空中標(biāo)準(zhǔn)介紹 : ? : cdma2022 High Rate Packet Data Air Interface Standards ? IOS標(biāo)準(zhǔn) : ? : Interoperability Specification (IOS) for CDMA 2022 Access Network Interfaces ? Ver : 1xEVDO Interoperability for Access Network Interfaces ? IP 標(biāo)準(zhǔn) : ? : Wireless IP Network Standard ? TIA/EIA/TSB115: Wireless IP Network Architecture based on IETF protocols ? 其他標(biāo)準(zhǔn) : ? Ver : Test spec ? : AN Minimum Performance Spec ? : AT Minimum Performance Spec 4 1xEVDO 信道結(jié)構(gòu) 1xEVDO Forward Reverse Pilot MAC Traffic Control Reverse Activity Bit Reverse Power Control (RPC) Traffic Access Pilot MAC Data Ack Pilot Data Reverse Rate Indicator (RRI) Data Rate Control(DRC) DRC Lock 5 T D M 7:1 Pilot Channel ( All 0’s) Simplex Encoder Codeword Repetition (Factor =37) Puncture Last 3 Symbols Signal Point Mapping 0?+1 1?1 BiOrthogonal Encoder Codeword Repetition (Factor=2) Signal Point Mapping 0?+1 1?1 A Walsh Cover Wi8, i=0,…,7 B Bit Repetition Factor=128 Signal Point Mapping 0?+1 1?1 C Encoder Channel Interleaver Interleaved Packet Repetition Signal Point Mapping 0?+1 1?1 D W016=(++++++++++++++++) ACK Channel 1 Bit Per Slot Data Channel Physical Layer Packets DRC Symbols One 4Bit Symbol Per Active Slot DRCCover Symbols One 3bit Symbol Per Active Slot RRI Symbols One 3Bit Symbol Pe
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