Method and System for Dynamic Power Management in Wireless Local Area Networks
First Claim
1. A method for transmitting data packets from an access point in a wireless local area network to a plurality of clients, comprising:
- associating each client with one of a plurality of minimum power levels; and
transmitting data packets, at each of a plurality of scheduled power levels, to at least one client associated with a minimum power level less than or equal to the scheduled power level.
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Accused Products
Abstract
A method and system for improving spatial reuse in a wireless local area network (WLAN) by per-client dynamic power management. Each access point of the WLAN associates each of its clients with a minimum power level. A central controller of the WLAN generates a schedule for transmission at different power levels, and each access point varies its transmission power level based on the schedule. An access point transmits data packets, at the scheduled transmission power level, to clients associated with a minimum power level that is less than the scheduled power level.
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Citations
24 Claims
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1. A method for transmitting data packets from an access point in a wireless local area network to a plurality of clients, comprising:
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associating each client with one of a plurality of minimum power levels; and transmitting data packets, at each of a plurality of scheduled power levels, to at least one client associated with a minimum power level less than or equal to the scheduled power level. - View Dependent Claims (3, 4, 5, 6, 7, 8)
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2. The method of claim 2, further comprising:
synchronizing an internal clock of said access point to a global clock, wherein said plurality of scheduled power levels are scheduled with respect to the global clock.
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9. A method for transmitting data packets from a plurality of access points in a wireless local area network to clients of each of said plurality of access points, comprising:
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for each of said plurality of access points, associating each client with one of a plurality of minimum power levels; generating a global schedule for transmission at each of a plurality of transmission power levels for a corresponding transmission time; and transmitting from each of said access points, at each of said plurality of transmission power levels for the corresponding transmission time according to said global schedule, data packets to at least one client associated with a minimum power level less than or equal to the transmission power level. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. An access point for transmitting data packets to a plurality of clients in a wireless local area network, comprising:
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means for associating each client with one of a plurality of minimum power levels; and means transmitting data packets, at each of a plurality of scheduled power levels, to at least one client associated with a minimum power level less than or equal to the scheduled power level. - View Dependent Claims (17, 18, 19, 20)
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21. A system for transmitting data packets to a plurality of clients in a wireless local area network, comprising:
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a central controller configured to generate a global schedule for transmission at each of a plurality of transmission power levels for a corresponding transmission time; and a plurality of access points, each access point configured to associate each of a plurality of clients with one of a plurality of minimum power levels, and each access point configured to transmit, at each of said plurality of transmission power levels for the corresponding transmission time according to said global schedule, data packets to at least one client associated with a minimum power level less than or equal to the transmission power level. - View Dependent Claims (22, 23, 24)
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Specification