In LTE optimization, Event A2 is a key measurement event used to trigger inter-frequency handovers. It occurs when the serving cell signal strength RSRP drops below a certain threshold and UE to will start measuring other frequency layers.
1.Current Serving Frequency: 39150
Measurement Object ID (measObjectId): 1
Report Configuration ID (reportConfigId): 2
Measurement ID (measId) = measObjectId + reportConfigId = 2
(This is what you check in the Measurement Report)
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(measId: 2) RSRP (serving cell): -105 dBm. This meets the Event A2 trigger condition.
Once this condition is met, the UE will start measuring neighbouring cells on other frequencies. -
The node sends an RRCConnectionReconfiguration message that includes:
Inter-frequency measurement configuration.
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