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>Overview of PHY Features in Phase II• Support for variable b<strong>and</strong>width• 1.4MHz, 3Mhz, 5Mhz, 10Mhz 15Mhz <strong>and</strong> 20Mhz• <strong>Model</strong>ing of physical channels• PDSCH, PDCCH, PRACH, PUSCH <strong>and</strong> PUCCH• Pathloss models• Freespace, Suburban Macrocell, Urban Macrocell, Urban Microcell, Erceg, Pedestrian <strong>and</strong> Vehicular• Multipath models• ITU Pedestrian A & B <strong>and</strong> ITU Vehicular A & B• Modulation <strong>and</strong> coding schemes• Interference modeling• Time <strong>and</strong> frequency overlaps among different bursts are detected• Interference is proportional to the overlap• Interference may cause burst drops for PUSCH <strong>and</strong> PDSCH bursts• Interference effects for control channels are based on a probability distribution function.• HARQ• Type II incremental redundancy• Asynchronous retransmissions on the downlink• Synchronous retransmissions on the uplink• Asynchronous in case of collision of synchronous retransmissions• Disabling PHY layer for faster simulations• Support for antenna modelsCONFIDENTIAL ─ 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.71
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