When ENB will send measurement configuration in RRC Reconfiguration Message?

Question

Is their any triggering point ENB has to send Measurement consfiguration to UE.

Generally measurement configuration will come in RRC Reconfiguration message.At intall attach procedure ENB will send RRC Connection Reconfiguration message to send SRB2 and DRB configuration.

So,My question what is the triggering point to send Measurement configuration.

Answer 1

Measurement Configuration is also done as part of normal attach procedure. This is required to get measurement report from UE and take corrective action (may be handover) to provide services continuously. Event A1 and A2 are sent by UE regarding serving cell power strength. Event A1 when UE observes signal better than configured threshold and A2 when UE observes signal less than the configured threshold.

Answer 2

1.> During the UL Resource Allocations to ue
2.> During HO to Intra LTE IntraCell HO(Interfrequency OR Intrafrequency) and Intra LTEInter Cell.
3.> Reconfiguration Message after RRC ReEstablishment.

Comments

Also during Measurement Gap Configuration during IFHO and IRAT HO