Abstract: A method of distance measurement for a first wireless communication device of a wireless communication system includes receiving a frame from a second wireless communication device of the wireless communications system; determining a signal strength of the received frame; and obtaining a round trip time (RTT) and estimating a distance between the first wireless communication device and the second wireless communication device according to the signal strength of the received frame.

Abstract: A method of handling a radio resource for a first communication device in a wireless communication system includes transmitting at least one notification frame to a second communication device, to indicate a radio resource rearrangement; applying the radio resource rearrangement; determining at least one radio resource threshold according to the radio resource rearrangement; receiving a packet from the second communication device and determining whether the second communication device applies the radio resource rearrangement according to the received packet and the at least one radio resource threshold; and performing a specific operation when determining the second communication device does not apply the radio resource rearrangement, to communicate with the second communication device via the rearranged radio resources.

Abstract: A method of handling a radio resource for a first communication device in a wireless communication system includes transmitting at least one notification frame to a second communication device, to indicate a radio resource rearrangement; applying the radio resource rearrangement; determining at least one radio resource threshold according to the radio resource rearrangement; receiving a packet from the second communication device and determining whether the second communication device applies the radio resource rearrangement according to the received packet and the at least one radio resource threshold; and performing a specific operation when determining the second communication device does not apply the radio resource rearrangement, to communicate with the second communication device via the rearranged radio resources.

Abstract: A communicating device includes: a first packet detector and a second packet detector, wherein the first detector is arranged to detect a first preamble included in a first response packet over a first sub-channel; and the second packet detector is arranged to detect a second preamble included in a second response packet over a second sub-channel. The second sub-channel is different from the first sub-channel, and the first packet detector and the second packet detector co-exist in the communicating device.

Abstract: A method of method of allocating a protection duration of a radio subsystem for a transmitting station of a wireless communication system includes transmitting a frame to at least one receiving station of the wireless communication system, wherein the proprietary frame indicates the protection duration allocated for the radio subsystem.

Abstract: A wireless communication method includes: sending a request frame to a responder, wherein the request frame includes a first message arranged to indicate what information the initiator supports; receiving a measurement frame from a responder, wherein the measurement frame includes a second message arranged to indicate what information the responder requires; and sending a report frame to the responder, wherein the report frame includes the information the responder requires.

Abstract: The method of dynamically adjusting frame aggregation size for a first communication device receiving aggregation packets from a second communication device in a wireless communication system is disclosed. The method comprises monitoring a buffered data size of the first communication device, and notifying the second communication device of a capable buffer size of the first communication device when the buffered data size monitored by the first communication device is higher than a threshold.

Abstract: A time-division mechanism that a source station uses a proprietary frame for notifying switching from a normal bandwidth operation to a narrow bandwidth operation to at least one destination station in a wireless communication system, and uses a protection frame to reserve the service period for the narrow bandwidth operation without the interference from the normal bandwidth operation, wherein the service period of the narrow bandwidth operation is indicated in the protection frame.

Abstract: A wireless communication calibration system has a radio chipset, an analog circuit set, and a calibration path. The radio chipset has a transmitter and a receiver. The analog circuit set is external to the radio chipset and coupled to the transmitter, and receives an output signal of the transmitter and generates a transmission signal according to the output signal. The calibration path is external to the radio chipset and coupled to the analog circuit set, and guides an input signal to the receiver, wherein the input signal is derived from the transmission signal, and a first delay is calculated after the input signal is received by the receiver.

Abstract: Communications apparatus includes first and second radio modules and an antenna array coupled to the first and the second radio modules and includes multiple antennas. When the first and the second radio modules operate at the same time, the first radio module negotiates with a first communications device an amount of antenna(s) to be used by a first message, so that the first radio module operates with the amount of the antenna(s) and second radio module operates with at least one of the remaining antenna(s).

Abstract: A method of configuring a number of antennas utilized in a wireless device within a wireless network system is disclosed. The wireless device comprises a plurality of antennas and transmits data to a destination wireless device using the plurality of antennas. The method comprises transmitting a first frame comprising a first number information to the destination wireless device; and transmitting data to the destination wireless device using a plurality of remaining antennas after the destination wireless device receives the first frame.

Abstract: A method for frame rate control in a transmitter of a wireless communications system comprises generating a frame and a first information corresponding to a first expiration time of the frame by a frame generating module; handling the frame according to the first expiration time by a driver module; and informing the frame generating module an adjusting information according to a first pre-determined rule by the driver module.

Abstract: A wireless communication calibration system has a radio chipset, an analog circuit set, and a calibration path. The radio chipset has a transmitter and a receiver. The analog circuit set is external to the radio chipset and coupled to the transmitter, and receives an output signal of the transmitter and generates a transmission signal according to the output signal. The calibration path is external to the radio chipset and coupled to the analog circuit set, and guides an input signal to the receiver, wherein the input signal is derived from the transmission signal, and a first delay is calculated after the input signal is received by the receiver.

Abstract: A wireless communication method includes: sending a request frame to a responder, wherein the request frame includes a first message arranged to indicate what information the initiator supports; receiving a measurement frame from a responder, wherein the measurement frame includes a second message arranged to indicate what information the responder requires; and sending a report frame to the responder, wherein the report frame includes the information the responder requires.

Abstract: A method of distance measurement for a first wireless communication device of a wireless communication system includes receiving a frame from a second wireless communication device of the wireless communications system; determining a signal strength of the received frame; and obtaining a round trip time (RTT) and estimating a distance between the first wireless communication device and the second wireless communication device according to the signal strength of the received frame.

Abstract: A method for performing opportunistic power saving in an electronic device and an associated apparatus are provided, where the method includes the steps of: wirelessly receiving at least one portion of a header of a packet, wherein the packet is wirelessly sent from outside the electronic device; determining a transmission time parameter of the packet according to the at least one portion of the header, for timing control of packet-based dozing; and according to header information within the packet, selectively controlling a transceiver of the electronic device to enter a doze state during a remaining transmission time of the packet, to reduce power consumption of the electronic device.

Abstract: A method for a communication device in a wireless communication system is disclosed. The method comprises detecting a signal from an access point in the wireless communication system, wherein the signal indicates that the access point is passpoint enabled, transmitting a request message with credential information to the access point, and receiving a response message with an access point information, from the access point.

Abstract: Communications apparatus includes first and second radio modules and an antenna array coupled to the first and the second radio modules and includes multiple antennas. When the first and the second radio modules operate at the same time, the first radio module negotiates with a first communications device an amount of antenna(s) to be used by a first message, so that the first radio module operates with the amount of the antenna(s) and second radio module operates with at least one of the remaining antenna(s).

Abstract: A method for frame rate control in a transmitter of a wireless communications system is disclosed. The method comprises generating a frame and a first information corresponding to a first expiration time of the frame by a frame generating module; handling the frame according to the first expiration time by the driver module; and informing the frame generating module an adjusting information according to a first pre-determined rule by the driver module.

Abstract: A portable device for receiving broadcast information is provided. A mixer down-converts a radio-frequency signal with a local oscillation clock to provide an intermediate frequency signal. A filter is arranged to filter the intermediate frequency signal. An analog-to-digital converter converts the filtered intermediate frequency signal into a digital signal according to a sampling rate. The broadcast information is obtained according to the digital signal. The local oscillation clock has a first frequency in a normal mode and a second frequency in a power-saving mode, and the second frequency is lower than the first frequency.