![]() MEASneigh + Oneigh,freq + Hyst Ms + a3offset MEASneigh + Oneigh,freq + Hyst Threshold-2 Triggering of the event is subsequently cancelled when either of the following conditions are true: MEASneigh + Oneigh,freq + Oneigh,cell + Hyst Threshold-2 MEASneigh + Oneigh,freq + Oneigh,cell + Hyst Threshold MEASneigh + Oneigh,freq + Oneigh,cell - Hyst > MEASserv + Oserv,freq + Oserv,cell + Offset The event is triggered when the following condition is true: The offset can be either positive or negative. The LTE Event A3 is triggered when a neighbouring cell becomes better than the serving cell by an offset. The hysteresis can be configured with a value between 0 and 30 dB. Triggering of the event is subsequently cancelled when the following condition is true: The LTE Event A1 is triggered when the serving cell becomes better than a threshold. MEASn = latest measurement result received from PHYSICAL layerįilter coefficient can be configured independently for LTE RSRP, LTE RSRQ, UMTS CPICH RSCP, UMTS CPICH Ec/Io and GSM RSSI. Layer-3 filtering is applied prior to evaluate whether or not any measurement reporting events have been triggered.įn-1 = previous filtered measurement resultĪ = (1/2)k/4 , where k is appropriate filter coefficient ![]() The time to trigger can be configured independently fpr each reporting event. The criteria for each event must be satisfied during at least the time to trigger. The criteria for triggering and subsequently cancelling each event are evaluated after layer-3 filtering has been applied. ![]() Inter-system LTE events B1 and B2 are based upon CPICH RSCP or CPICH Ec/Io for UMTS system, RSSI for GSM and pilot strength for CDMA2000. LTE Events A1, A2, A3, A4 and A5 are based upon either RSRP or RSRQ messages. The stands defines 5 intra-system and 2 inter-system measurement reporting events as described below. It replaces the measurement control message used in the UMTS system. In LTE system, RRC connection reconfiguration message is used to configure UE measurement reporting. ![]()
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