LTE中的切换测量几个问题
问题1:UE报送测量报告之后,源eNB要进行切换准备,在这个切换准备过程中,源eNB发送具体哪些参数和相关信息到目标eNB??
问题2:在频内测量(intra frequency measurement)时,不配置measurement gap,其测量机制是怎么样的??
对于频内系统,低于's-Measure' 的才测量本小区的强度,因为是频内顺带测量同频邻区是容易的,不需要Gap。
NOTE 3: The 's-Measure' defines when the UE is required to perform measurements. The UE is however allowed to perform measurements also when the serving cell RSRP exceeds 's-Measure', e.g., to measure cells broadcasting a CSG identity following use of the autonomous search function as defined in TS 36.304 [4].
s-Measure
Serving cell quality threshold controlling whether or not the UE is required to perform measurements of intra-frequency, inter-frequency and inter-RAT neighbouring cells. Value “0” indicates to disable s-Measure.
至于切换需要满足一定条件,包括门限(A3/A5?)及时间要求:Timetotrigger,具体去见36.331.
回答下问题2,Intra不需要Measurement Gap。GAP是为了测异频或者异系统的
多谢二位的解答!
测量这个,其实主要是终端的系统架构设计决定的,协议考虑是尽量减小终端的处理要求,以简约化。测量是要对齐中心频点,测量参考信号等等的。现在的约定是所有异频测量,都需要Gap。在Gap测量周期内,停止所有业务和服务小区的测量等等,专门用于异频邻区的测量。这样终端就不需要在两个频点上面同时扫描。
你可以假设一下,如果没有Gap的概念,终端需要如何进行异频点的测量处理?对应的信号解调是否会翻倍?