top button
Flag Notify
    Connect to us
      Site Registration

Site Registration

In the paging message send from MME to eNB , which paging ue identity is used ?

+3 votes
848 views

PagingUE-Identity ::= CHOICE {
s-TMSI S-TMSI,
imsi IMSI,
...
}

As pagingUE identity should contain any one of these in paging message so how MME decides which one to send, though for security purpose MME prefers t-o send send S-TMSI but in which scenarion MME wil use imsi as paging ue identity.

posted Jun 4, 2015 by Sachidananda Sahu

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

2 Answers

+2 votes

I think these could be scenarios when MME uses IMSI.
1>Restart MME when UE is in IDLE Mode.
2> MME Relocation (IDLE Mode relocation i.e when S10 is removed)

answer Jun 4, 2015 by Luv Singh
+1 vote

MME does paging for UEs with IMSI after recovery of a network failure at MME.
For example: UE is attached to a MME and after some time it goes to IDLE mode. The time UE is in IDLE state, MME goes down/restart and it recovers only few data after recovery. Now Its MME responsibility to inform UE. That's why MME does paging with IMSI. Once UE receives paging with IMSI, it deletes all context locally and moves to EMM-DEREGISTERED state. After that UE initiates Attach Procedure towards network.

answer Jun 4, 2015 by Harshita
Similar Questions
+4 votes

In which scenario we will create multiple paging records in paging message and sent it to UE.
Actually RRC will receive one S1AP paging message for one UE.HOW and WHEN RRC will create RRC paging message with Multiple UE paging Records in one PCCH message .

0 votes

What are the ways to trigger paging message from ENB. Of there is any change in sibs, paging message should be sent write.what are the procedures then?

+4 votes

When we will construct a RRC paging message with multiple paging records?
In which scenario I need to construct a RRC paging message message with multiple paging records.Suppose we have 10 UEs in idle mode and DL data notification is comming for 5 UEs at the same time,then how mme will send S1AP paging message(i.e one by one for each UE or all the message at once).If ENB is receiving all the four S1AP paging message then how RRC has to process the S1AP paging messages and how it should construct the RRC paging message (i.e whether it should send one paging record for one pcch message or it should send multiple records in one PCCH message?if multiple records then how to send the UE_ids to MAC and RLC?).

...