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LTE: can somebody share the scenario for handover cancel && handover reject ??

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LTE: can somebody share the scenario for handover cancel && handover reject ??
posted Mar 30, 2017 by Akhilesh

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1 Answer

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Target ENB will initiate handover reject if any problem in target ENB (like insufficient resource or overloaded).
source ENB will initiate handover cancel if any problem at UE or ENB side (like timer expiry or an RLF).

answer Mar 31, 2017 by Jaganathan
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+2 votes

Q-1-I observed a scenario like when initiating MO call ,RRC connection establishment fails(RRC connection reject) due to cell reselection completion prior to receiving RRC connection setup.In this case which will be given a priority ,Cell reselection or Call ?

Q-2: What are other possible RRC connection failure reasons could happen from UE or Network perspective ?

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1 ->What are all the Handover failure situations in LTE ( apart from mentioned)

HO failure situations :- Like Target fails to
->get security context (mismatch in integrity/ciphering)
->max number of ue's in connected mode reached
->failed to admit atleast on erab n other

and what the message source eNodeB forwards to UE ( to inform a failure in handover) which leads to reestablishment ?

2->How or what are the possibilities that a UE fails to configure with RRC connection reconfiguration sent n does this happen only during Handover.