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LTE: What does eNodeB send "RRC establishment cause " in Initial UE message to MME ?

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LTE: What does eNodeB send "RRC establishment cause " in Initial UE message to MME ?
posted Mar 15, 2016 by Harshita

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2 Answers

+2 votes

ENB sends RRC Establishment Cause=mo-Signalling to MME in case, signalling was generated by a UE.

answer Apr 24, 2016 by Bhaskar Kalaria
NAS layer common procedure in this situation rrc connection establishment sends cause with mobile originated signallimg
+1 vote

MME considers "establishment cause" also while taking decision on attach request.
If MME is not configured to support emergency call then it rejects the attach request comes from UE with the rrc establishment cause "emergency".
Not all the users belong to same access class. A MME can accept attach request from user belongs to a specific class while at the same it can reject the attach request from UE belongs to a different access class.
In essence, MME may take different actions based on the different rrc-establishment cause.
I hope this detail will help you !

answer Apr 26, 2016 by Vimal Kumar Mishra
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+3 votes

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+1 vote

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