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LTE: Does the network re-establish DRBs as part of tracking area update (TAU) procedure ?

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There are two types of tracking area update procedures in LTE, one is known as periodic and the other one is aperiodic.
I want to know in either case (periodic/aperiodic), when MME receives TAU request from UE, does it re-establish all the bearers again or it just completes TAU signalling and UE goes to idle mode again ?

posted Nov 25, 2016 by Vikram Singh

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1 Answer

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Hi,

There are multiple scenario that UE will do TAU, In some scenario EPS bearer has to re-establish like MME changes and SGW changes..Refer the following link for more information

http://www.lteandbeyond.com/2012/04/tracking-area-update-tau-procedure.html

answer Nov 25, 2016 by Jaganathan
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