Title: Source: Contact: Date: Abstract: Recommendation: Notice © 2000, Panasonic. All rights reserved. The information contained in this contribution is provided for the sole purpose of promoting discussion within the 3GPP2 and its Organization Partners and is not binding on the contributor. The contributor reserves the right to add to, amend, or withdraw the statements contained herein. Panasonic grants a free, irrevocable license to 3GPP2 and its Organization Partners to incorporate text or other copyrightable material contained in the contribution and any modifications thereof in the creation of 3GPP2 publications; to copyright and sell in Organizational Partner ’ s name any Organizational Partner ’ s standards publication even though it may include portions of the contribution; and at the Organization Partner ’ s sole discretion to permit others to reproduce in whole or in part such contributions or the resulting Organizational Partner ’ s standards publication. The contributor may hold one or more patents or copyrights that cover information contained in this contribution. A license will be made available to applicants under reasonable terms and conditions that are demonstrably free of any unfair discrimination. Nothing contained herein shall be construed as conferring by implication, estoppel, or otherwise any license or right under any patent, whether or not the use of information herein necessarily employs an invention of any existing or later issued patent, or copyright. The contributor reserves the right to use all material submitted in this contribution for his own purposes, including republication and distribution to others. Reduction of power consumption of AT with discontinuous report of DRC Kenichi Miyoshi Panasonic TEL FAX July 24, 2000 This contribution presents the simulation results of the discontinuous DRC report scheme proposed by Panasonic at TSG-C WG3 in Hawaii. Discuss and Adopt.

Panasonic C XXX TSG-C 1XEV Physical Layer AdHoc Conference Call Jul./24/ Contents Explanation of proposed scheme Explanation of how to distinguish DRC erasure from DRC non-report Simulation results of –DRC error rate and erasure rate –DRC change ratio under fast fading environment

Panasonic C XXX TSG-C 1XEV Physical Layer AdHoc Conference Call Jul./24/ Proposed discontinuous report of DRC Discontinuous report of DRC –AT reports DRC when DRC changes –When the suspension of DRC continues for several slots(e.x. 4), AT reports DRC even if DRC doesn’t change AT can reduce the power consumption The reverse link capacity can be increased

Panasonic C XXX TSG-C 1XEV Physical Layer AdHoc Conference Call Jul./24/ How to distinguish erasure from non-report P pl : power of Pilot symbol P DRC :power of DRC symbol Th erasure :Threshold level for DRC Erasure Th non-report :Threshold level for DRC non-report

Panasonic C XXX TSG-C 1XEV Physical Layer AdHoc Conference Call Jul./24/ Simulation parameters Channel model1p-Rayleigh 3km/h Number of AP1 DRC_Length1 RL power control1% Packet Error Rate 0dB to –15dB 10dB Th non-report DRC non-report threshold AP RXDual antennas ParameterValue Th erasure DRC erasure threshold

Panasonic C XXX TSG-C 1XEV Physical Layer AdHoc Conference Call Jul./24/ DRC error rate and erasure rate(1) Qualcomm’s simulation result seems strange. When erasure rate is almost 50%, threshold level is about –16dB. (C QCOM DRC Channel Simulations)

Panasonic C XXX TSG-C 1XEV Physical Layer AdHoc Conference Call Jul./24/ DRC error rate and erasure rate(2) DRC erasure threshold should be chosen to keep reliable DRC error rate DRC non-report threshold should be chosen to control DRC error AP can guarantee reliable operation of the system

Panasonic C XXX TSG-C 1XEV Physical Layer AdHoc Conference Call Jul./24/ Simulation parameters1(DRC change ratio) Channel model 1)2p-Rayleigh 3km/h 2)2p-Rayleigh 30km/h 3)2p-Rayleigh 120km/h Number of AT1 AT RX1 antenna ParameterValue

Panasonic C XXX TSG-C 1XEV Physical Layer AdHoc Conference Call Jul./24/ Simulation parameters2(DRC change ratio) Data Rate [kbps]Ec/Nt [dB]

Panasonic C XXX TSG-C 1XEV Physical Layer AdHoc Conference Call Jul./24/ DRC change ratio

Panasonic C XXX TSG-C 1XEV Physical Layer AdHoc Conference Call Jul./24/ Power consumption reduction of AT DRC change ratio and reduction of power consumption Proposed scheme is powerful even under the frequent DRC change environment 3km/h 2Path Rayleigh30.9% 30km/h 2Path Rayleigh66.4% 77.1%120km/h 2Path Rayleigh 33.7% 16.4% 11.2% Channel DRC change Ratio [*1] Reduction of AT’s Power consumption[*2] *1 With Fault Tolerant Mechanism *2 Calculated by the equation (C p.12)

Panasonic C XXX TSG-C 1XEV Physical Layer AdHoc Conference Call Jul./24/ Summary Proposed AT’s discontinuous DRC report –can reduce AT’s power consumption –can guarantee DRC reliability with introduction of DRC erasure mechanism –Powerful even under frequent DRC change environment