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目 錄
1.物理層定時(shí)和同步過程.......................................................3
1.1基站下行定時(shí)............................................................3
1.2下行擾碼................................................................3
1.3同步碼..................................................................5
1.3.1時(shí)隙同步............................................................8
1.3.2幀同步..............................................................9
2.WCDMA接入過程..............................................................9
2.1隨機(jī)接入................................................................9
2.1.1隨機(jī)接入導(dǎo)言信號...................................................10
2.1.2隨機(jī)接入擾碼.......................................................11
2.1.3捕獲指示信道.......................................................12
2.1.4隨機(jī)接入信息.......................................................12
2.1.5隨機(jī)接入偏置定時(shí)...................................................13
2.2捕獲，同步和物理層過程.................................................14
2.2.1 UE捕獲和同步.......................................................14
2.2.2 UE請求系統(tǒng)接入和登記...............................................14
2.2.3 建立專用信道.......................................................15
2.2.4 分組接入信道.......................................................15
2.2.5 CPCH狀態(tài)指示信道...................................................17
2.2.6 接入導(dǎo)言指示信道...................................................17
2.2.7 碰撞檢測/信道分配指示信道..........................................18
3.WCDMA軟切換...............................................................19
3.1頻率間切換.............................................................24
3.1.1壓縮模式操作.......................................................24
3.1系統(tǒng)間切換.............................................................25