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Patent Searching and Data


Title:
POWER-EFFICIENT DATA RECEPTION IN A COMMUNICATION SYSTEM WITH PACKET VARIABLE DELAY
Document Type and Number:
WIPO Patent Application WO2006045100
Kind Code:
A3
Abstract:
To conserve power, a terminal operates in a "power save" mode in which the terminal is in a "doze" state when there is a low probability of receiving an incoming packet and in an "awake" state when an incoming packet is expected. In the doze state, the terminal powers down as much circuitry as possible. The terminal transitions between states based on an "ON" window. The window size and placement are determined based on statistics of packet arrival times. The terminal enters the awake state at the start of the ON window, turns on the receiver, and monitors for an incoming packet. The terminal turns off the receiver after receiving the packet, updates the statistics of the arrival times, and computes the window size and placement for the next incoming packet. The terminal may selectively enable or disable the power save mode based on jitter in the arrival times.

Inventors:
PRAKASH RAJAT (US)
Application Number:
US2005038108W
Publication Date:
July 27, 2006
Filing Date:
October 20, 2005
Export Citation:
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Assignee:
QUALCOMM INCORPORATED
PRAKASH, RAJAT
International Classes:
H04L12/28
Foreign References:
US20030210658A12003-11-13
EP1202495A22002-05-02
Other References:
EUN-SUN JUNG ET AL: "An energy efficient MAC protocol for wireless LANs", PROCEEDINGS IEEE INFOCOM 2002. THE CONFERENCE ON COMPUTER COMMUNICATIONS. 21ST. ANNUAL JOINT CONFERENCE OF THE IEEE COMPUTER ANDCOMMUNICATIONS SOCIETIES. NEW YORK, NY, JUNE 23 - 27, 2002, PROCEEDINGS IEEE INFOCOM. THE CONFERENCE ON COMPUTER COMMUNICA, vol. VOL. 1 OF 3. CONF. 21, 23 June 2002 (2002-06-23), pages 1756 - 1764, XP010593744, ISBN: 0-7803-7476-2
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