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>The PHY Module Functions• Accept a packet from MAC <strong>and</strong> perform transmission on OFDM resources• wrls_phy_pk_send() wrls_phy_mcarrier_pk_send() in wrls_phy_support.ex.c• Physical layer effects in pipeline stages• Most <strong>LTE</strong> pipeline stages are wrls_* under the models/std/wireless folder• Effects such as pathloss, multipath, interference are modeled in pipelines• Open architecture allows users to create custom pathloss <strong>and</strong> multipath modelseasily (lab 3)• Set up transmitter <strong>and</strong> receiver specific PHY information for easy informationsharing• wrls_phy_tx_info_init_first_phase() <strong>and</strong> wrls_phy_tx_info_init_second_phase() inwrls_phy_support.ex.c• Collect various statistics• Pathloss, SNR, received power, dropped packets etc.• Promoted statistics are under the <strong>LTE</strong> PHY group• Support advanced PHY features (upcoming <strong>and</strong> future planned)• Measurements <strong>and</strong> notifications to the MAC upon crossing of a threshold• Monitoring energy consumption at a 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.67
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