Abstract: In an ad-hoc wireless network, a single multicast message can be used to announce availability of queued data to one or more WLAN devices in the ad-hoc network. A wireless network device in the ad-hoc network can determine network identifiers associated with the other wireless network devices in the ad-hoc network for which the queued data is available. The wireless network device transmits the multicast message, which identifies the wireless network devices for which queued data is available, to indicate the wireless network devices that should remain in an active power state. On receiving the multicast message, a receiving WLAN device can read a network identifier bit associated with the receiving WLAN device to determine whether or not the receiving WLAN device should remain in the active power state. This can reduce transmission overhead and improve power savings, efficiency, and data reliability.

Abstract: In ad-hoc wireless networks, functionality can be implemented to dynamically enable/disable an ad-hoc power save mode depending on whether or not the WLAN device is in a continuous traffic environment. The WLAN devices in the ad-hoc wireless network can use beacon frames to transmit a power mode switch request, to respond to a received power mode switch request (to indicate acceptance or rejection of the received power mode switch request), and to indicate a power mode switch status. The WLAN devices switch the power mode if all the WLAN devices in the ad-hoc wireless network accept the power mode switch request. Changing the power mode depending on the environment can improve power savings, data throughput, and reliability.

Abstract: In ad-hoc wireless networks, functionality can be implemented to dynamically enable/disable an ad-hoc power save mode depending on whether or not the WLAN device is in a continuous traffic environment. The WLAN devices in the ad-hoc wireless network can use beacon frames to transmit a power mode switch request, to respond to a received power mode switch request (to indicate acceptance or rejection of the received power mode switch request), and to indicate a power mode switch status. The WLAN devices switch the power mode if all the WLAN devices in the ad-hoc wireless network accept the power mode switch request. Changing the power mode depending on the environment can improve power savings, data throughput, and reliability.

Abstract: A wireless local area network (WLAN) positioning system is disclosed that allows the WLAN system to determine the location attributes of a client device operating in a power save mode, operating on a different channel than the WLAN's access points, and/or operating in an ad-hoc mode. The client device periodically performs scanning operations during which beacon frames broadcast by a selected AP(s) can be received. The client device parses information embedded in the beacon frames, and in response thereto selectively initiates ranging operations to determine its location attributes. After determining its location attributes, the client devices sends the location attributes back to the selected AP(s).

Abstract: In a wireless communication system an access point and a station in association with the access point, the station is configured to transmit keep alive information to the access point regarding a period of time during which the station will be in a low power mode. The access point is configured to maintain the association with the station for the period of time even when no communications are received from the station during the period of time. The keep alive information is configured to allow designation of a period of time greater than 18 hours.

Abstract: In ad-hoc wireless networks, functionality can be implemented to dynamically enable/disable an ad-hoc power save mode depending on whether or not the WLAN device is in a continuous traffic environment. The WLAN devices in the ad-hoc wireless network can use beacon frames to transmit a power mode switch request, to respond to a received power mode switch request (to indicate acceptance or rejection of the received power mode switch request), and to indicate a power mode switch status. The WLAN devices switch the power mode if all the WLAN devices in the ad-hoc wireless network accept the power mode switch request. Changing the power mode depending on the environment can improve power savings, data throughput, and reliability.