Method and system for power control in a wireless LAN
AssigneeSprint Spectrum L.P.
InventorsJason R. Delker, John M. Everson, Bryce A. Jones
Life of this patent
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Abstract
A mobile device for wireless communication with a wireless local area network (WLAN) includes a transceiver that is able to selectively transmit at a plurality of transmit power levels. When the mobile device associates with a wireless access point in the WLAN, the wireless access point transmits a control signal that controls the power level at which the mobile device transmits wireless signals to that wireless access point.
Claims15
A method of wireless communication between a mobile device and at least one wireless access point of a wireless local area network (WLAN), wherein said mobile device transmits wireless signals at an adjustable transmit power level, said method comprising:
- a first wireless access point storing a first predetermined transmit power level in accordance with an intended coverage area of said first wireless access point, wherein said first predetermined transmit power level is preferred to be used by any mobile device associating therewith;
- said mobile device wirelessly transmitting a first association request to said first wireless access point of said WLAN;
- and
- in response to said first association request, said first wireless access point wirelessly transmitting a first association response to said mobile device, wherein said first association response includes a first control signal that indicates said first predetermined transmit power level to control said adjustable transmit power level.
A mobile device for wireless communication with a wireless access point of a wireless local area network (WLAN), wherein said wireless access point stores a predetermined transmit power level in accordance with an intended coverage area of said wireless access point, and wherein said predetermined transmit power level is preferred to be used by any mobile device associating therewith, said mobile device comprising:
- a radio frequency (RF) transceiver for transmitting wireless signals to said wireless access point and receiving wireless signals from said wireless access point, said RF transceiver being able to selectively transmit wireless signals at a plurality of transmit power levels;
- and
- a controller coupled to said RF transceiver, wherein said controller comprises:
- a processor;
- data storage;
- and
- a plurality of machine language instructions stored in said data storage and executable by said processor for:
- (a) recognizing a control signal in an association response message from said wireless access point, wherein said control signal indicates said predetermined transmit power level;
- (b) selecting a transmit power level based on said control signal;
- and
- (c) causing said RF transceiver to transmit at said selected power level in conformance with said predetermined transmit power level in said intended coverage area of said wireless access point.
Dependencies are inferred from the claim text.