同异频切换的参数配置精编版.docx
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同异频切换的参数配置精编版
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:
Thresholdth2aforRSRP(Threshold2a)
A1迟滞:
Relatedhysteresisofthresholdth2aforRSRP(hysthreshold2a)
服务小区的RSRP-hysthreshold2a>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启动异频测量门限:
Thresholdth2interFreqforRSRP(threshold2InterFreq
)
A2迟滞:
Relatedhysteresisofthresholdth2interfreqforRSRP(hysThreshold2InterFreq
)
打开Enableinterfrequencyhandover:
异频切换开关
TimetotriggerforA2toactivateintermeasurement(
a2TimeToTriggerActInterFreqMeas
)
当服务小区的RSRP+hysThreshold2InterFreqa2TimeToTriggerActInterFreqMeas
,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+HysNSN无Ofn/Ocn/Ofs/Ocs参数
同频A3事件
同频A3迟滞:
Relatedhysteresisofoffseta3offsetforRSRPintraF(hysA3Offset
)
A3报告时长:
A3reportinterval
A3触发时延:
A3timetotrigger
A3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A3offsetRSRPinterfrequency
a3OffsetRsrpInterFreq
异频A3报告时长:
A3reportintervalRSRPinterfrequency
异频A3触发时延:
A3timetotriggerRSRPinterfrequency
异频A3迟滞:
Relatedhysteresisoffseta3offsetRSRPinterfrequency
hysA3OffsetRsrpInterFreq
异频A3事件满足:
邻小区的RSRP—hysA3OffsetRsrpInterFreq
>服务小区的RSRP+a3OffsetRsrpInterFreq
A5事件:
事件进入条件:
Ms+Hys且Mn+Ofn+Ocn-Hys>Threah2
诺西无Ofn/Ocn参数
同频A5事件:
Thresh1:
Thresholdth3forRSRP(threshold3
)
Thresh2:
Thresholdth3aforRSRP
threshold3a
A5报告时长A5reportinterval
A5触发时延A5timetotrigger
A5迟滞Relatedhysteresisth3andth3aforRSRP
同频A5事件满足:
当服务小区的
RSRP+hysThreshold3threshold3a
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,其示意图如图所示:
异频A5事件:
Thresh1:
Thresholdth3forRSRPinterfrequency
(threshold3InterFreq)
Thresh2:
Thresholdth3aforRSRPinterfrequency
(threshold3aInterFreq)
A5报告时长A5reportintervalinterfrequency
A5触发时延A5timetotriggerinterfrequency
A5迟滞Relatedhysteresisofthresholdsth3andth3aforRSRP
(hysThreshold3InterFreq)
异频A5事件满足:
当前服务小区的RSRP+hysThreshold3interFreq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+HysThresh2,即可实现A4