Controlling forward link traffic channel power
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
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출원번호 |
US-0781883
(2007-07-23)
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등록번호 |
US7869410
(2010-12-28)
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발명자
/ 주소 |
- Anderson, Jon J.
- Malladi, Durga P.
- Doerfler, Steven J.
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
0 인용 특허 :
10 |
초록
▼
Forward link transmission power to a user terminal in a wireless communications system having a plurality of beams is controlled by determining a baseline power level, Pbaseline, from a received active pilot channel signal-to-noise ratio (SNR); determining a power margin, Pmargin, from an identified
Forward link transmission power to a user terminal in a wireless communications system having a plurality of beams is controlled by determining a baseline power level, Pbaseline, from a received active pilot channel signal-to-noise ratio (SNR); determining a power margin, Pmargin, from an identified interference susceptibility; determining a power level correction, Pcorrection, based on an identified packet error rate (PER); and setting Ptransmit based on Pbaseline, Pmargin, and Pcorrection. For example, Ptransmit may be set to a power level that is substantially equal to the sum of Pbaseline, Pmargin, and Pcorrection. The determination of each of Pbaseline, Pmargin, and Pcorrection may be performed in independently running control loops or processes.
대표청구항
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What is claimed is: 1. A method of controlling forward link traffic channel transmission power, Ptransmit, to a user terminal by an entity in a wireless communications system having a plurality of beams, comprising the steps of:(a) receiving from the user terminal an in-use formatted message signal
What is claimed is: 1. A method of controlling forward link traffic channel transmission power, Ptransmit, to a user terminal by an entity in a wireless communications system having a plurality of beams, comprising the steps of:(a) receiving from the user terminal an in-use formatted message signal to noise ratio (SNR);(b) determining a baseline power level, Pbaseline, from the received formatted message SNR, wherein the determining step comprises calculating a power level offset;(c) identifying a user terminal interference susceptibility comprising identifying at least one other user terminal within the plurality of beams and a data rate of the at least one other user terminal;(d) determining a power margin, Pmargin, from the identified interference susceptibility;(e) identifying a packet error rate (PER) associated with the user terminal;(f) determining a power level correction factor, Pcorrection, based on the PER; and(g) setting Ptransmit based on Pbaseline, Pmargin, and Pcorrection.
이 특허에 인용된 특허 (10)
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Sourour,Essam; Atarius,Roozbeh; Khayrallah,Ali, CDMA system using quasi-orthogonal codes.
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Wiedeman Robert A. ; Sites Michael J., Closed loop power control for low earth orbit satellite communications system.
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Komatsu, Masahiro, Closed loop power control with adjustable width based on channel quality.
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Tiedemann, Jr.,Edward G.; Lin,Yu Chuan; Jou,Yu Cheun; Odenwalder,Joseph P., Method and apparatus for forward link rate scheduling.
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Padovani, Roberto; Bender, Paul E.; Black, Peter J.; Grob, Matthew S.; Hinderling, Jurg K.; Sindhushayana, Nagabhushana T.; Wheatley, III, Charles E., Method and apparatus for high rate packet data transmission.
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Zehavi Ephraim (Haifa ILX) Carter Stephen S. (San Diego CA) Gilhousen Klein S. (Bozeman MT), Method and apparatus for using full spectrum transmitted power in a spread spectrum communication system for tracking in.
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Shi Yu, Method and system for initiating idle handoff in a wireless communications system.
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Molnar Karl ; Ramesh Rajaram ; Hassan Amer Aref ; Molnar Barbara, Position determination using multiple base station signals.
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Gilhousen Klein S. (San Diego CA) Jacobs Irwin M. (La Jolla CA) Weaver ; Jr. Lindsay A. (San Diego CA), Spread spectrum multiple access communication system using satellite or terrestrial repeaters.
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Boyden, Albert K.; Lee, Chester P., System for controlling communications between a terminal and satellite and method therefore.
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