Which event type is time critical handover in LTE?

Question

while performing handover ue needs to scan neighbour cells for handover ue usually don't have access to all cells to measure(measurement event/report) then how come ue will know which cells it needs to measure?

Answer 1

Hi,

It depends on the vendor implementation. some vendor treats A5 event as time critical handover.

Comments

Hi Jaganathan, What could be the reason to consider event A5 as critical event for handover ? If you can explain then it would be very helpful to understand this completely. Thanks in advance.

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Hi harshitha,
as i said it is vendor dependent. Like A5 event will be reported when serving cell becomes worse and neighbor cell becomes good but in other events like a4 neighbor becomes good(but doesn't mean serving cell is worse) so even if you don't do handover your connection will not loose. but in A5 event if you don't do handover your connection will be lost because serving cell is getting worse.

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Thanks a lot to provide such a good details. You really have very good knowledge in LTE.

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thank you :)