RAT小區(qū)，異RAT小區(qū)是什么意思？

RAT是 radio acess technology無線接入技術的縮寫K:JFD()$#_*(本文來自移動通信網gg1fic3.cn,版權所有

異RAT小區(qū)，是指采用不同無線接入技術的小區(qū)，eg : TD-SCDMA 和WCDMA,  WCDMA和GSM都是異RAT小區(qū)ads不K:JFD本文來自移動通信網gg1fic3.cn,版權所有
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即是開啟3G & 2G的neighbor關係, 可以讓3G,2G彼此handover or cell reselection , 稱為IRAT .?$#@3221aK:JFD()$#_本文來自移動通信網gg1fic3.cn,版權所有
Inter-Radio Access Technology Cell Change (IRATCC) handles the Cell Change and Cell Reselection of a UE in connected state to and from a GSM/GPRS system. The IRATCC handles the Cell Change and Cell Reselection when the UE is connected to a Packet-Switched service.d3s1fK:JFD本文來自移動通信網gg1fic3.cn,版權所有
Once the evaluation carried by the Inter-Rat Handover Evaluation algorithm has lead to a proposed GSM/GPRS cell, Inter-RAT Cell Change Execution is enabled if the UE is connected to a Packet-Switched service, and the Inter-RAT Cell Change execution part starts. The result of the execution part is one of the following:不21fdK:JFD(本文來自移動通信網gg1fic3.cn,版權所有
• The UE, in CELL_DCH state, changes cell and continues connected to a Packet-Switched service in the new GSM/GPRS cell. s1fd知1fkjhfK:JFD()$#_*(本文來自移動通信網gg1fic3.cn,版權所有
• The UE, in CELL_FACH state, reselects cell and the UE contacts the new GSM/GPRS system.2是434321%$#K:JFD()$#_*(本文來自移動通信網gg1fic3.cn,版權所有
• The UE remains in the WCDMA RAN connected to a Packed-Switched service, due to Inter-RAT Cell Change failure.