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How network decides when to do handover in LTE?

+3 votes
How network decides when to do handover in LTE?
posted Aug 5, 2016 by Arijit Chakraborty

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Answer is simple, there is a measurement keeps happening for the neighboring cell and if neighboring cell is ore suitable then current cell then handover happens between two cells. Now suppose this new cell belongs to new eNB then its intra ENB handover.

1 Answer

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Initially when LTE UE attaches to the network, Event A1 and A2 are configured by default. Event A1 is triggered when serving cell becomes better than threshold and Event A2 is triggered when serving cell becomes worse than threshold. All these measurement configuration sent in RRC connection reconfiguration message from eNodeB to UE.
When eNodeB receives event A2, it can configure for A3, A4 and A5 based on eNodeB interest to initiate handover on same frequency or different frequency. For this purpose, again eNodeB sends RRC connection reconfiguration message with the new configurations.

answer Aug 6, 2016 by Harshita
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