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LTE NAS: When EMM Information message sends to an UE ?

+3 votes
1,515 views

When this message is sent by Network to an UE ? There are couple of optional IEs within the message, what significance of their presence within the message ?

posted Apr 10, 2014 by Neeraj Mishra

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1 Answer

0 votes

These are mobility management messages. Please check it may be helpful.
http://www.lteandbeyond.com/2012/12/EMM-ECM-eps-mobility-management-and-connection-management.html

answer Jun 13, 2014 by Sanjeet Kumar
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+3 votes

There are couple of procedures are defined which consist of NAS as well as RRC signalling messages exchange.
Some of the NAS message sends to an UE through RRC Connection Reconfiguration message as piggybacked and some as DL Info transfer.

I want to know, Is there any procedure exists in lte when an UE receives RRC Connection Reconfiguration along with NAS message and responds back to network with NAS message first and then Reconfiguration Complete to eNodeB.

Usually, I saw UE sends RRC Connection Reconfiguration Complete message first then NAS response message.

+2 votes

What is the objective to send the ESM Information Request message to UE ? Does it part of attach procedure ?

+2 votes

Is this message mandatory to be triggered by UE towards network as part of tracking area update procedure or only at some special cases it is triggered ?

+2 votes

Does UE send APN information while registering with network using the "Attach request" message ?
How MME come to know that UE should attach to APN "XYZ" ?

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