top button
Flag Notify
    Connect to us
      Site Registration

Site Registration

Why RRC Re-establishment procedure really needed?

+1 vote
309 views

If we drop all the data when link got failure and Reset RLC , PDCP and MAC. And also flushout UE context, ongoing radio barriers (except SRB0).

why cant to start a fresh connection ? why really needed Re-establishment procedure?

posted Sep 12, 2016 by Suchakravarthi Sripathi

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

1 Answer

0 votes

Hi,

If re establishment is not there then UE has to start a connection fresh, that means it has to follow all fresh attach procedure but it is not needed , because already UE context is present in MME and ENb, So re establishment will save all those attach procedure time. It will have only 3 msg communication, Re-establishment request, re-establishment msg, re-establishment complete.

answer Sep 12, 2016 by Jaganathan
Similar Questions
+2 votes
Why Security Should be needed to Initiate RRC Connection Re-establishment?

Upon detecting Radio Link Failure UE will do RRC Connection re-establishment but to do RRC Connection re-establishment security should be activated in UE, otherwise UE will go Idle mode.So here(After detecting RLF) we are resetting all PHY,MAC,RLC,PDCP Configurations but why we are making security should be there to do RRC Connection re-establishment.

+1 vote
In RLC AM Mode, How RRC Re-establishment procedure happend?

in RLC AM Mode, to resumption of SRB-1 , how ongoing sequence number can be maintain in RLC ?

If we do RLC-reset and MAC-reset operations, How can this sequence number information maintained in RLC and how it informs to upper layers?

Regards,
Suchakravarthi

+2 votes
How "MAC-Reset" operation can be performed in case of rrc re-establishment procedure?

What other procedures can be impact due to MAC-Reset ?

+1 vote
For RRC Re-establishment Procedure, what are Functionlities in Layer-2 ?

What procedures effect in (MAC,RLC and PDCP) ???

Please help to make note of functionalities effected in LTE layer-2 when RRC re-establishment triggers?

...