top button
Flag Notify
    Connect to us
      Site Registration

Site Registration

When and where data buffer will start during x2 and s1 handover and when it will forward to target cell

+2 votes
1,075 views

Please explain in detail "When and where data buffer will start during x2 and s1 handover and when it will forward to target cell"

posted Jun 22, 2016 by Lakshmi Kumar

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

1 Answer

0 votes

Hi ,

During handover only in PDCP data will be buffered, and it will forward to target ENb at the time of status transfer.

answer Jun 22, 2016 by Jaganathan
Hi Jaganathan,

Can you please let me know exactly at after which message UE starts buffering at PCDP level.....
commented Jun 22, 2016 by Lakshmi Kumar
Hi lakshmi , i dont know at UE side, But at ENb side RRC will tel to PDCP with hand over trigger, so then PDCP will change its state to HO_PREPARATION and start buffering. same way UE side also might have implemented.
commented Jun 23, 2016 by Jaganathan
Thanks Jaganathan...
I will add more info if get from any....
commented Jun 23, 2016 by anonymous
Similar Questions
+4 votes
How target enodeb will validate the new incoming user during x2 or s1 handover?

How target enodeb will confirm if the incoming user is a genuine user or not?

Is there any IE exchanged during HO preparation phase? I am expecting that during X2 handover AS SECURITY INFO in UE context is very helpful? Is that or not?

0 votes
When Fullconfig IE will come with RRC Connection Reconfiguration , during S1-based handover or X2 - based handover

When Fullconfig IE will come with RRC Connection Reconfiguration , during S1-based handover or X2 - based handover
please explain in detail .

+1 vote
Would there be an advantage of X2 based handover over S1 based handover, when X2 physically spans the same path as S1?

In case of hub-and-spoke topology, X2 messaging can travel all the way back to an aggregation point, which may be co-located with EPC. In such scenario both X2 and S1 traverses same physical path (a.k.a X2 over S1). Please consider both Intra-MME and Inter-MME handover scenarios. Would X2 based handover in such a case yield advantage over S1 based handover. Thanks.

...