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><strong>LTE</strong> <strong>Model</strong> Features Up to Phase II• PHY• OFDMA for downlink & SC-FDMA for uplink• Supported channels: PDCCH, PUCCH, PHICH,PDSCH, PUSCH, PRACH• BLER modulation curves with turbo coding <strong>and</strong>circular buffer rate matching algorithm for eachmodulation <strong>and</strong> coding scheme (MCS)• Multiple path loss models• Multipath channel model for uplink <strong>and</strong>downlink• Interference on data channels from other data <strong>and</strong>control channels• Intra- <strong>and</strong> inter-cell interference• HARQ• Synchronous retransmissions with implicit grantson uplink• Asynchronous retransmissions on downlink• Type-II incremental redundancy• ACK to NACK <strong>and</strong> NACK to ACK errormodeling• MAC• GBR/Non-GBR EPS bearers• Logical <strong>and</strong> Transport Channels• R<strong>and</strong>om Access Procedure• Frame generation <strong>and</strong> Scheduler• MAC• Scheduling Requests• Buffer Status Reporting• Admission Control• RLC• Acknowledged, Unacknowledged <strong>and</strong>Transparent Modes• Segmentation of retransmitted PDUs in case ofsmall grants into PDU segments• Configurable RLC parameters for each radiobearer for each direction• PDCP: Compression for TCP/IP <strong>and</strong> UDP/IPheaders• EPS Mobility Management (EMM)• EPS Session Management (ESM)• S1 Signaling <strong>and</strong> EPS BearerSetup/Modification/Release• General• Efficiency mode to disable PHY layer• Tagged EPS/radio bearer related statistics• 3 <strong>and</strong> 6 sector eNodeBs• Router UE nodeCONFIDENTIAL ─ 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.5
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