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>EPS Session Management (ESM)• Dedicated Bearer Activation Procedure• MME initiated Dedicated Bearer Deactivation Procedure• GTP Tunneling Between eNodeB <strong>and</strong> EPC Nodes• GTP tunnels carry the EPS bearers in the core network.• A GTP tunnel is dynamically established for each EPS bearer.• The GTP layer is located at the eNodeB <strong>and</strong> EPC nodes as follows:• IP datagrams are sent through the corresponding GTP tunnels in the <strong>LTE</strong> corenetwork with the following encapsulation headers:CONFIDENTIAL ─ 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.36
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