Understanding LTE Model Internals and Interfaces
Understanding LTE Model Internals and Interfaces
Understanding LTE Model Internals and Interfaces
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1581 <strong>Underst<strong>and</strong>ing</strong> <strong>LTE</strong> <strong>Model</strong> <strong>Internals</strong> <strong>and</strong> <strong>Interfaces</strong>UE NAS• Initiates the attachment procedure to the network (EPC)• Controls activation/deactivation of EPS bearers depending upon trafficactivity• While the EPS bearer is setup, data packets mapped to that bearer are queuedlte_ue_nas.pr.mSends ESM “modifydedicated EPS bearerREQUEST” message to EPCSends ESM “Activatededicated EPS bearerACCEPT” message to EPCSends ESM “Deactivatededicated EPS bearerACCEPT” message to EPCFlushes the buffer of aninactive EPS bearerCONFIDENTIAL ─ RESTRICTED ACCESS: This information may not be disclosed, copied, or transmitted in any format without the prior written consent of OPNET Technologies, Inc. © 2010 OPNET Technologies, Inc.12
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