Power-saving mechanism for periodic traffic streams in wireless local-area networks
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United States of America Patent
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Apr 6, 2010
Grant Date -
Dec 30, 2004
app pub date -
Dec 16, 2003
filing date -
Dec 16, 2002
priority date (Note) -
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Abstract
A novel method for coordinating the delivery of frames to and the receipt of frames from a power-saving station in a wireless local-area network (LAN) is disclosed. The illustrative embodiment establishes a wake-up schedule for a power-saving station based on a temporal period and temporal offset that reduces the frequency with which multiple stations in a network wake up simultaneously, thereby reducing traffic delays and power consumption. The illustrative embodiment is particularly well-suited to networks with traffic that has delay/jitter quality-of-service (QoS) requirements (i.e., voice calls, videophone calls, etc.).
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