Performance Evaluation of LBS Basic Mode Document Number: IEEE C802.16m-09_2197 Date Submitted: 2009-09-21 Source: Lei Zhou Fangmin.

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Performance Evaluation of LBS Basic Mode Document Number: IEEE C802.16m-09_2197 Date Submitted: Source: Lei Zhou Fangmin Zheng Zhao Xufeng Zheng China SAMSUNG Telecom R&D Center Sangheon Kim Heewon Kang Hokyu Choi SAMSUNG Electronics Venue: IEEE Session #63.5, Hawaii, USA Base Contribution: N/A Re: IEEE Working Group Letter Ballot #30: P802.16m/D1 LBS Purpose: For information Notice: This document does not represent the agreed views of the IEEE Working Group or any of its subgroups. It represents only the views of the participants listed in the “Source(s)” field above. It is offered as a basis for discussion. It is not binding on the contributor(s), who reserve(s) the right to add, amend or withdraw material contained herein. Release: The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE Patent Policy: The contributor is familiar with the IEEE-SA Patent Policy and Procedures: and. Further information is located at and.

Simulation Scenarios LBS Simulation Scenarios for 19 cells, Frequency Reuse=3

Simulation Assumptions Scenario/ParametersBaseline Cells /Sectors19/3 Frequency reuse3 Reference signalSA-preamble/D1 Site to Site Distance1.5Km Carrier2.5GHz Operating Bandwidth10MHz BS & MS Height32m&1.5m BS &MS Power46dBm&23dBm Pass Loss ModelLoss(dB)= log 10 ( R ) Lognormal Shadowing Std.Dev8dB ChannelPB BS&MS Antenna GainRefer to LBS simulation Assumption doc BS&MS Cable LossRefer to LBS simulation Assumption doc Noise FigureRefer to LBS simulation Assumption doc Simulation parameter LBS simulation assumption document from simulation group of LBS DG

Performance of DL-TDOA method

Performance of DL-TDOA+TOA method

CDF performance comparison of hybrid mode and DL-TDOA For Hybrid mode, in 100m error CDF value is 90%; in 300m error, CDF is 95.4%, so hybrid mode can be satisfied with E911 Requirement

Effect of TOA Sample Error 1.TOA sample Error is one of the important factors that affects performance of CDF. 2.Synchronization error can directly lead to TOA sample error. 3.The number of candidate BSs is also one of the factors that affects performance of CDF.

Conclusion Evaluation results show basic mode with some combination such as TDOA+TOA can be satisfied with E911 requirement, so we needn’t enhance mode at all. It is suggested that enhance location support item is deleted in ToC draft. Base on evaluation results, hybrid mode of TDOA+TOA can be satisfied with E911, so TDOA+TOA method should be made as enhance method. So it is suggested that proposed text in C80216m-09_1736 should be accepted by LBS DG and be written in D1