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看愛立信的performance統(tǒng)計流程 ，在 Rab 建立的時候， 這個 counter “pmNoNormalNasSignReleaseCs/Ps + ” 加了1。
這個counter不是 IU 信令鏈接釋放的counter么？
查了一下對這個counter的解釋：
Number of successful normal releases of the NAS signalling sequence at call setup towards a CS CN from the originating states Idle, URA_PCH, CELL_FACH, CELL_DCH and URA_PCH/CELL_FACH. Incremented in the best cell in the active set.
Condition:
Incremented when a RANAP Iu Release Command with 'release cause' = 'Normal Release', 'Successful Relocation', 'Resource Optimisation Relocation', 'User Inactivity' or 'release-due-to-UE-generated-signalling-connection-release' is received during the NAS signalling phase, i.e. after IU Signalling Connection establishment and before RAB Assignment Request, at a known call setup attempt towards a new CS CN, i.e. a RRC establishment cause equal to 'Emergency Call', 'Originating', 'Originating Conversational Call' or 'Terminating Conversational Call' and an RRC Initial Direct Transfer has been received prior to the NAS Signalling phase. Also incremented when the NAS signalling phase is ended when a RAB Assignment Request message is received with the IE 'RABs to be setup or modified' if it is a known call setup attempt towards a new CS CN. The counter is incremented in the best cell in the active set.
依舊不明白，為什么這里 NasSignRelease會加1呢？？
求大牛講解。
謝謝
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