Abstract: A managing wireless communication device assigns channels of a channel set to associated wireless communication devices. The associated wireless communication devices monitor the assigned channels for in-band signals including radar signals and report detections to the managing wireless communication device. The managing wireless communication device resets a timer associated with a channel when a report is received from one of the associated wireless communication devices. The timer may indicate how long the associated channel has been radar free.

Abstract: In a wireless network that uses some of the same channels as radars, an operationally separate radar detection device may be used to detect the presence of a radar signal, and notify at leas one network device of that detection so the wireless network devices may switch to a non-interfering channel. In some embodiments the detection device may be physically separate from other network devices, and may notify them via network communication messages. In other embodiments, the detection device may be physically and electrically attached to a network device, and may notify that device via an interrupt or other wired connection.

Abstract: Briefly, in accordance with one embodiment of the invention, an apparatus, comprising at least one access point (AP) in a wireless network; and the access point (AP) capable of channel allocation based on predetermined criteria. The wireless network may be a wireless local area network (WLAN) and the channel allocation may be automatic and the predetermined criteria may be allocating a channel which minimizes the interferences among other APs in the network by selecting a channel in the wireless network which has the lowest signal strength level, and/or has less interferences from neighboring cells and/or has an appropriate allocation with spectrum spreading uniformly over the frequency band.

Abstract: A mobile station in a wireless network dynamically adjusts its sleeping time for power saving based on its data traffic activity.

Abstract: An access point in a wireless network has a variable output power to reduce wireless network interference.

Abstract: A method includes monitoring a variable-rate data communication channel to determine its signal-to-noise ratio, and adjusting the data transmission rate of the variable rate data communication channel based on its signal-to-noise ratio.

Abstract: A central controller provides centralized dynamic frequency selection in a wireless network.

Abstract: In a wireless network, transmit power levels may be interactively adjusted to dynamically maintain a desired level of network loading and/or data throughput in a changing network environment.

Abstract: A communication station performs closed-loop transmit power control and adjusts its transmit power level based on an access point sensitivity, a path loss and/or a link margin variation. An average received power level of orthogonal frequency-division multiplexed (OFDM) subcarriers of an OFDM channel may be measured at the communication station, and the path loss may be estimated from an access point transmit power level and the measured power level. The communication station may request an access point's transmit power level and link margin from the access point prior to estimating the path loss. The communication station may calculate the access point sensitivity by subtracting the path loss and the access point link margin from the communication station's transmit power level. The link margin variation may be estimated from an access point transmit power variation, an indoor path loss variation, and/or a receiver power measurement error of the communication station.

Abstract: Briefly, in accordance with one embodiment of the invention, a mobile unit may detect and connect to a wireless local area network, contemplating worldwide multiband networks and multiple regulatory domains, with a shorter searching time.

Abstract: Briefly, in accordance with one embodiment of the invention, a device may dynamically select a frequency on which to communicate on a wireless local area network by determining which channels are available and which are unoccupied, for example using a received signal power level measurement. A linear folding algorithm may be used to select an available channel at a midpoint in a larger gap between occupied channels. In the event there are multiple larger gaps of the same size, the larger gap at the higher frequency may be selected.