top button
Flag Notify
    Connect to us
      Site Registration

Site Registration

RRC: Why is RLF handover ?

+2 votes
974 views
RRC: Why is RLF handover ?
posted Feb 15, 2014 by Harshita

Share this question
Facebook Share Button Twitter Share Button LinkedIn Share Button

1 Answer

+1 vote

RLF (Radio link failure) handover is nothing but rrc re-establishment procedure initiated while handover procedure is ongoing . I mean to say here, Enodeb decoded the measurement report successfully sent by UE but when enodeb sends RRC Connection Reconfiguration message (commonly known as handover command) to UE, but UE could not decode handover command due to poor radio conditions.

In that situation, when UE couldn't receive "handover command" message and UE also moving towards target cell. RLF is very likely to occur and UE sends RRC Re-establishment Request message towards Target cell. As per precondition to make rrc re-establishment procedure successful, target eNodeB should have a valid context of UE. Since target was already prepared with the context (during handover preparation target enodeb creates the ue context).

This is detailed description of RLF handover. I hope I understood your query and answered the same.

answer Feb 15, 2014 by Vimal Kumar Mishra
Similar Questions
0 votes

While Handover why RLF is occurring?While making handover UE sending RLF in target ENB what might be the reason?

+2 votes

How ever same ENB is handling source and target cell, then why do we need handover just RACH is enough to make synch ?

+4 votes

What is the use of TAI , which is included in handover required message ?

+2 votes

What is the reasoning behind to use different security keys after moving from one eNodeB to another eNodeB (Handover) ?

...