top button
Flag Notify
    Connect to us
      Site Registration

Site Registration

Which type of rach procedure should perform in rrc re-establishmemt?

+1 vote
438 views
Which type of rach procedure should perform in rrc re-establishmemt?
posted Sep 19, 2016 by Suchakravarthi Sripathi

Share this question
Facebook Share Button Twitter Share Button LinkedIn Share Button
Hi,

what do you mean by RACH type ???
commented Sep 19, 2016 by Jaganathan
Contention or contention free??  And what is the reason
commented Sep 19, 2016 by Suchakravarthi Sripathi

1 Answer

+1 vote

Hi,

It is always contention based RACH, because Whil re-establishing there will be no connection between ENB and UE. So ENB cant give the contention free preambles to UE.

answer Sep 19, 2016 by Jaganathan
Hi,

In this case PDCCH order can be possible?
commented Sep 20, 2016 by Suchakravarthi Sripathi
No, ENB cant inform contention free preamble to UE.
commented Sep 20, 2016 by Jaganathan
can you please verify this link and let me know what mentioned in this ...

http://lteinwireless.blogspot.in/2012/04/rrc-connection-re-establishment-in-lte.html

under "Query_4" section have some tip note "Important TIP:"

please verify and let me know
commented Sep 20, 2016 by Suchakravarthi Sripathi
Similar Questions
+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
which type of rach is used for senb in dual connectivity? Please give the reference if possible.

which type of rach is used for senb in dual connectivity? Please give the reference if possible.

+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.

0 votes
Why Security Should be Activated 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

...