LTE - dedicated bearer setup [Under LTE]
» E-UTRA and E-UTRAN overall description - 36.300, Rel 8 «
» E-UTRAN access - 23.401, Rel 8 «
» EMM and ESM - 24.301, Rel 8 «
» GTPv2-C - 29.274, Rel 8 «
» S1AP - 36.413, Rel 8 «
» NAS overall - 24.007/8, Rel 8 «
» RRC - 36.331, Rel 8 «
As mentioned in last article, dedicated bearer is meant for specific QoS and always associated with default bearer (which provide initial/basic PDN connectivity). Dedicated bearer setup is always initiated by EPC. EPC triggers dedicated bearer setup due to incoming packet connection (call) or due to ESM request sent by UE.
Below is a end-to-end signaling diagram for dedicated bearer setup.
References: 3G Evolution: HSPA and LTE by Dahlman, Parkvall, Sköld, and Beming, LTE - From Theory to Practice, Edited by Sesia, Toufik, and Baker, and SAE and the Evolved Packet Core: Driving the Mobile Broadband Revolution by Olsson, Sultana, Rommer, Frid, and Mulligan.
|Copyright © Samir Amberkar 2010-11||§|
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