同异频切换的参数配置

1、同异频切换的参数配置A1事件：事件进入条件：Ms - Hys > Thresh停止异频测量门限：Threshold th2a for RSRP(Threshold2a) A1迟滞：Related hysteresis of threshold th2a for RSRP (hys threshold2a)服务小区的RSRP- hys threshold2a >Threshold2a，且保持时间超过a1TimeToTriggerDeactInterMeas 的设置时间，则停止异频测量。A2事件：启动同频测量门限threshold1 事件进入条件：Ms + Hys < Thres

2、h 启动异频测量门限：Threshold th2 interFreq for RSRP (threshold2InterFreq )A2迟滞：Related hysteresis of threshold th2 interfreq for RSRP(hysThreshold2InterFreq )打开Enable interfrequency handover:异频切换开关Time to trigger for A2 to activate inter measurement(a2TimeToTriggerActInterFreqMeas )当服务小区的RSRP+ hysThreshold2

3、InterFreq < threshold2InterFreq，且保持时间超过的设置时间a2TimeToTriggerActInterFreqMeas ，则开始异频测量A3事件事件进入条件：Mn + Ofn + Ocn - Hys > Ms + Ofs + Ocs + Off 事件离开条件：Mn + Ofn + Ocn + Hys < Ms + Ofs + Ocs + Off NSN无Ofn/Ocn/Ofs/Ocs 参数同频A3事件同频A3迟滞：Related hysteresis of offset a3offset for RSRP intra F(hysA3Offset

4、 )A3报告时长:A3 report intervalA3触发时延:A3 time to triggerA3偏置:A3offset故同频A3事件需满足：邻小区的RSRP-hysA3Offset >服务小区的RSRP+ a3Offset ，由于hysA3Offset配置为0，故A3事件的示意图如下图所示：异频A3事件异频A3偏置 A3 offset RSRP inter frequencya3OffsetRsrpInterFreq 异频A3报告时长：A3 report interval RSRP inter frequency异频A3触发时延：A3 time to trigger RSRP

5、 inter frequency异频A3迟滞：Related hysteresis offset a3offset RSRP inter frequencyhysA3OffsetRsrpInterFreq 异频A3事件满足：邻小区的RSRPhysA3OffsetRsrpInterFreq >服务小区的RSRP+ a3OffsetRsrpInterFreqA5事件：事件进入条件：Ms + Hys < Thresh1 且 Mn + Ofn + Ocn- Hys >Threah2诺西无Ofn/Ocn参数同频A5事件：Thresh1:Threshold th3 for RSRP(th

6、reshold3 )Thresh2 :Threshold th3a for RSRPthreshold3a A5报告时长A5 report intervalA5触发时延A5 time to triggerA5迟滞Related hysteresis th3 and th3a for RSRP同频A5事件满足：当服务小区的RSRP+hysThreshold3<threshold3,且邻区RSRP- hysThreshold3>threshold3a由于现网中的迟滞配置为0，故只要服务小区低于threshold3，邻区高于threshold3a，并达到触发的时间，就会发生切换，其示意图

7、如图所示：异频A5事件：Thresh1:Threshold th3 for RSRP inter frequency（threshold3InterFreq ）Thresh2 :Threshold th3a for RSRP inter frequency（threshold3aInterFreq ）A5报告时长A5 report interval inter frequencyA5触发时延A5 time to trigger inter frequencyA5迟滞Related hysteresis of thresholds th3 and th3a for RSRP （hysThreshold3InterFreq ） 异频A5事件满足：当前服务小区的RSRP+hysThreshold3interFreq< threshold3InterFreq并满足：邻区的RSRP- hysThreshold3interFreq> threshold3aInterFreq A4事件：事件进入条件：Mn + Ofn + Ocn - Hys > Thresh 通过A5事件来实现，将A5事件中的Thresh1配置一个很高的值，使Ms + Hys &