Abstract: A method and system for isochronous data stream management in high speed audio/video networks. One implementation comprises isochronous communication management between audio/video (AV) devices by maintaining forwarding information for forwarding data between AV devices, wherein each AV device includes multiple I/O ports for connecting the AV device to another AV device via a communication link including multiple communication lanes. The forwarding information is utilized to communicate AV path set-up request and response control messages between a source AV device and a destination AV device via said communication link, and allocating isochronous communication resources for AV data streaming, for establishing AV path streams for bi-directional isochronous AV data streaming between the source and destination AV devices.

Abstract: Responder-aware relay station selection in a wireless communication network is provided. One implementation includes evaluating operational parameters of multiple candidate wireless relay stations, and selecting a wireless relay station among the multiple candidate wireless relay stations based on the evaluation. A wireless communication is transmitted to the selected wireless relay station over a wireless communication medium.

Abstract: A system and method for obtaining a transmit beamforming vector for transmission of high definition video data over a wireless medium is disclosed. In one embodiment, the system comprises at least one transceiver, a memory configured to store a first transmit beamforming vector, and a processor configured to i) perform beamforming with the first transmit beamforming vector to modulate a first training signal, ii) transmit the modulated training signal via the at least one transceiver, iii) receive a second modulated training signal via the at least one transceiver, iv) obtain a second transmit beamforming vector based on the modulated second training signal, v) replace the first transmit beamforming vector in the memory with the second transmit beamforming vector, and vi) determine whether to use the second transmit beamforming vector to modulate a high definition video data signal to be transmitted.

Abstract: A system and method for wireless communication of uncompressed video data are disclosed. One embodiment of the system includes a wireless communication device. The device includes a receiver configured to receive a data packet, and a transmitter configured to send an acknowledgment (ACK) signal upon receiving a data packet. The ACK signal includes a physical layer preamble, a physical layer header including a plurality of bits indicative of the status of the data packet, and a cyclic redundancy check (CRC) field. The ACK signal optionally includes a payload field containing beam-tracking data.

Abstract: A system and method of training antennas for two devices having heterogeneous antenna configurations in a wireless network is disclosed. The method includes communicating one or more estimation training sequences between two devices via a phased array antenna and a switched array antenna, wherein a beamforming vector of the phased array antenna is switched between phase vectors within a set of weight vectors while the switched array antenna is switched within a plurality of antenna sectors. The method further includes tuning at least one of the phase array and switched array antennas with an antenna parameter selected based at least in part on the one or more estimation training sequences. The method further includes communicating data messages via at least one of the phase array and switched array antennas so tuned.

Abstract: A high accuracy clock synchronization mechanism between a sender and a receiver in a communication network achieves time synchronization using broadcast beacons, directly at the PHY/MAC layer of the sender and the receiver, to minimize synchronization delay jitter. This provides a more efficient synchronization method than either NTP or SNTP, because multiple handshaking information exchange is avoided. Further, using beacons avoids the overhead of introducing additional synchronization packets in higher layer synchronization.

Abstract: Time synchronization in a wireless communication system comprises transmitting a synchronization frame from a transmitter to a receiver over a wireless communication medium. The synchronization frame includes a timestamp indicating the transmitter local time when a symbol at a predefined position of the synchronization frame is placed on the wireless communication medium for transmission. The synchronization frame is received at the receiver which determines a receiving time comprising the receiver local time when said symbol of the synchronization frame was received at the physical layer of the receiver. Time synchronizing is performed by determining a difference between said timestamp and said receiving time, and adjusting the receiver local time based on said difference to time synchronize the receiver with the transmitter.

Abstract: A method of efficient scheduling for portable devices communicating with a coordinator over a network is disclosed. The method includes: listening for beacons broadcasted by a coordinator; assigning, by the coordinator, a single contiguous time block (CTB) for portable devices during a superframe defined by consecutive beacons; scheduling a single wake period of one of the portable devices, which overlaps inclusively with consecutive beacons and the single CTB; and minimizing duration of the single wake period of the portable device. The single CTB may be arranged next to one of the consecutive beacons. The method may further comprise assigning, by the coordinator, a single random access time block (RATB) for the one of the portable devices so as to overlap with the single wake period. The RATB may be arranged next to one of consecutive beacons. The CTB may be arranged next to the RATB. The CTB may be arranged next to one of the consecutive beacons.

Abstract: A method and system of wireless communication is provided which involves inputting information bits, wherein certain bits have higher importance level than other bits, and applying unequal protection to the bits at different importance levels. As such, important bits are provided with more protection for transmission and error recovery. Applying unequal protection involves using skewed constellations such that more important bits are provided with more error recovery protection.

Abstract: A method and system for enhancing transmission reliability of video information over a wireless channel is provided. The video information includes pixels, each having a plurality of components and each component including video information bits that are placed in sub-packets within a packet. Error detection information is determined for one or more sub-packets, and placed in the packet. Then the packet is transmitted from a transmitter to a receiver a wireless channel, wherein the receiver uses the error detection information per sub-packet to check for transmission errors and request retransmission of erroneous video information bits based on their perceptual importance.

Abstract: A system and method of training antennas for two devices having heterogeneous antenna configurations in a wireless network is disclosed. The method includes communicating one or more estimation training sequences between two devices via a phased array antenna and a switched array antenna, wherein a beamforming vector of the phased array antenna is switched between phase vectors within a set of weight vectors while the switched array antenna is switched within a plurality of antenna sectors. The method further includes tuning at least one of the phase array and switched array antennas with an antenna parameter selected based at least in part on the one or more estimation training sequences. The method further includes communicating data messages via at least one of the phase array and switched array antennas so tuned.

Abstract: The present invention provides a method and system for data packet communication in wireless communication systems. One embodiment involves determining if one or more data blocks pending transmission in a current transmission opportunity period over the channel will expire before the start of another transmission opportunity period, and if a data block will expire before the start of another transmission opportunity period, then extending the current transmission opportunity period by an extension period for transmitting the expiring data block during the extension period. One or more expiring packets are transmitted during the extension period on a best-effort basis.

Abstract: A method and system for wireless communication in a TV band white space spectrum is provided. A wireless master device keeps track of available wireless communication channels in a white space spectrum. The master device performs an enablement process for enabling a corresponding client device to transmit on a wireless channel. During the enablement process, the master device allows the client device to select a wireless channel for communication from among: a specific operating wireless channel, a subset of the available wireless channels, and all available wireless channels.

Abstract: A method and system for communication in an IEEE 802.11n WLAN including L-stations and HT-stations, wherein a signaling field such as a small legacy format frame is appended at the end of a L-SIG TXOP Protection sequence in order to terminate the EIFS procedure at L-stations. This increases the probability for L-stations to obtain access to a shared communication channel relative to HT-stations.

Abstract: A method and system for device discovery in a wireless network is provided. The device discovery involves directionally transmitting a data unit from a transmitting station over a channel in different directions to emulate omni-directional transmission, receiving the data unit transmissions from different directions at a receiving station, determining the quality of the transmissions received from the different directions, and detecting location information for the transmitting station relative to the receiving station based on the highest quality transmission among the transmissions received from the different directions.

Abstract: A method and system for bandwidth allocation for communicating information over one or more wireless channels by wireless stations, is provided. The channel time is divided into one or more superframes. Available channel bandwidth is allocated by reserving one or more channel time blocks (CTBs) in a superframe for communication, resulting in one or more residue CTBs among the reserved CTBs in the superframe, and allocating at least a portion of one or more residue CTBs in the superframe for bidirectional communication between two stations.

Abstract: A method and system for data communication in a wireless network is provided. A wireless transmitter transmits a locality check message from a wireless transmitter to a wireless receiver over a wireless communication medium. Upon receiving a locality check response message from the wireless receiver, the wireless transmitter marks the locality check response message as valid even if it arrives after an original locality check time period since transmission of the locality check message, but before the end of an adjusted locality check time period. The adjusted locality check time period comprises said original locality check time period adjusted by delays in processing layers at the transmitter and wireless communication medium access delays in data communication between the wireless transmitter and the wireless receiver.

Abstract: Systems and methods of training antennas for two devices equipped with phased array antennas in a wireless network are disclosed. In one embodiment, the methods include transmitting a plurality of estimation training sequences from a transmit phased array antenna to a receive phased array antenna, wherein a length of at least one of the plurality of training sequences is adapted to a number of antenna elements at one of the transmit and receive phased array antennas. The methods further include transmitting data to the receive phased array antenna via the transmit phased array antenna tuned with a transmit beamforming vector (BV) selected based at least in part on the plurality of estimation training sequences.

Abstract: A method and system for establishing a channel in a wireless video area network, is provided. Establishing a channel involves scanning available high-rate and low-rate channels, selecting a channel from the available channels with minimal interference with other networks, determining if the selected channel remains available for a listening period, and if the selected channel remains available, then starting communication on the selected channel. The selected channel is a high-rate channel and a corresponding low-rate channel.

Abstract: A method and system for communicating information over a wireless channel in a communication system including a coordinator and receivers, involves controlling channel access by dividing a contention-free period (CFP) into one or more schedules, wherein each schedule includes one or more periodical channel time blocks (CTBs) for wireless communication, reserving a CTB for reliable broadcast or multicast (ReBoM) communication of a data packet over the channel, transmitting the data packet from the coordinator over the channel during the reserved CTB, and receiving one or more acknowledgments for the data packet from one or more of the receivers. The data packet includes a header comprising ReBoM information indicating a multi-CTB ReBoM communication sequence for the data packet or a single-CTB ReBoM communication sequence for the data packet.