Patent application number | Description | Published |
20080198875 | Method and system for bidirectional bandwidth reservation in wireless communication systems - 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. | 08-21-2008 |
20080250294 | System and method for wireless communication of uncompressed video having a composite frame format - A system and method for efficiently communicating uncompressed video and for efficiently communicating corresponding acknowledgements in a system for wireless communication of uncompressed video are disclosed. In one embodiment, the method includes aggregating multiple subpackets of different types of data into a composite packet. The different types of data may include video, audio, control data, extraneous data files, and others. A robust composite packet configuration can provide for more flexible and more efficient transmission of data on the high rate channel as well as more efficient transmission of acknowledgements on the low rate channel. | 10-09-2008 |
20080273600 | METHOD AND APPARATUS OF WIRELESS COMMUNICATION OF UNCOMPRESSED VIDEO HAVING CHANNEL TIME BLOCKS - A method and system for transmission of uncompressed video information from a sender to a receiver over wireless channels is disclosed. For example, according to one embodiment, a time division multiple access method is used to allocate channel time blocks (CTBs) of a wireless channel to a particular transmitting device. If the transmitting device encounters a data underflow condition in which insufficient data for filling a reserved CTB is available for transmission, alternate data is identified for transmission during the otherwise unused reserved time period. Accordingly, embodiments include systems and methods of using such partially utilized CTBs. | 11-06-2008 |
20080279160 | SYSTEM AND METHOD FOR WIRELESS COMMUNICATION HAVING A DEVICE COORDINATOR SELECTION CAPABILITY - A system and method for wireless communication having a device coordinator selection capability are disclosed. In one aspect, the method comprises determining a coordinator priority of each device based on a static priority table, the table assigning a priority to each type of devices. The method further comprises selecting a first device among the plurality of devices as the coordinator based at least in part on the coordinator priority of each device, and a coordinator candidate from the plurality of devices except the current coordinator, based on the coordinator priority of each device and probing results. | 11-13-2008 |
20090046653 | SYSTEM AND METHOD FOR PEER-TO-PEER BEAM DISCOVERY AND COMMUNICATION IN INFRASTRUCTURE BASED WIRELESS NETWORKS USING DIRECTIONAL ANTENNAS - A system and method for performing a beam discovery between peer stations is disclosed. A channel time message indicating an allocation of a first time period for a peer-to-peer beam discovery (PBD) is received, where the PBD is configured to discover a beam direction to be used for data transfer to a peer station. The PBD is executed between two peer stations during the first time period. Data is transferred to the peer station via the discovered beam direction if the PBD is successful. | 02-19-2009 |
20090052389 | SYSTEM AND METHOD FOR MULTIPLE CONTENTION ACCESS PERIODS - A system and method for multiple contention access periods is disclosed. In one embodiment, the system for wireless communication comprises a coordinator configured to schedule wireless transmissions among a plurality of wireless devices during a plurality of superframes, at least one of the superframes comprising a period during which the coordinator is configured to receive one or more data packets from the wireless devices via at least one random access scheme, the period being partitioned into a plurality of sub-periods which do not overlap with one another, wherein the coordinator is configured to receive at least a first data packet having a first value for a parameter during a first sub-period and a second data packet having a second value for the parameter during a second sub-period, and wherein the first and second values for the parameter are different from each other. | 02-26-2009 |
20090054054 | SYSTEM AND METHOD FOR MAINTAINING RELIABLE BEACON TRANSMISSION AND RECEPTION IN A WIRELESS COMMUNICATION NETWORK - Systems and methods for maintaining reliable beacon transmission and reception in a wireless communication network are disclosed herein. In one embodiment, there is a method of communicating in a wireless communication network comprising a first device and a second device, the method comprising selecting, by the first device, a wireless communication direction for communication of data, wherein the wireless communication direction comprises at least one of a reception direction of the first device, a reception direction of the second device, a transmission direction of the first device, or a transmission direction of the second device, associating, by the first device, with the second device in the selected wireless communication direction, receiving, by the first device, a plurality of signals transmitted in different directions by the second device, the plurality of signals comprising a first signal in the selected wireless communication direction and a second signal transmitted in another direction different from the selected wireless communication direction, and determining, by the first device, one or more measures of quality of the first and second signals. | 02-26-2009 |
20090073942 | SYSTEM AND METHOD FOR DEVICE DISCOVERY IN A WIRELESS NETWORK OF DEVICES HAVING DIRECTIONAL ANTENNAS - A system and method for wireless communication are disclosed. One aspect of the system includes a plurality of wireless devices forming a wireless network. The plurality of wireless devices are configured to wirelessly communicate with one another. Each of the wireless devices includes a device table including a list of one or more of the wireless devices and the directions of the one or more of the wireless devices with respect to the wireless device including the device table. In the wireless system, any one of the plurality of wireless devices is configured to perform device discovery directly with a new wireless device entering the wireless network. The one wireless device is further configured to update the device table therein and to transmit the updated device table to other wireless devices in the wireless network. Other devices in the wireless system can update their device tables, based at least partly on the updated device table without performing device discovery directly with the new wireless device. | 03-19-2009 |
20090077611 | SYSTEM AND METHOD FOR WIRELESS COMMUNICATION OF UNCOMPRESSED VIDEO HAVING REED-SOLOMON CODE ERROR CONCEALMENT - A system and method for wireless communication of uncompressed video data are disclosed. One embodiment of a method of wireless communication for video data includes concealing corrupted portions of video data. The method includes receiving a plurality of video packets transmitted over a wireless channel. Each of the video packets includes a plurality of data blocks, and the data blocks in the plurality of video packets together form video data representing at least part of a video frame. Each of the data blocks is encoded with an error correction code (ECC). The method also includes determining whether any of the plurality of data blocks in the video packets has been corrupted while being transmitted over the wireless channel; and replacing a corrupted data block with an uncorrupted data block selected from the plurality of data blocks in the plurality of video packets. The corrupted data block includes a first displayable element on the video frame and the uncorrupted data block includes a second displayable element on the video frame. The uncorrupted data block is selected at least partially based on proximity between the first and second displayable elements on the video frame. | 03-19-2009 |
20090138774 | SYSTEM AND METHOD FOR WIRELESS COMMUNICATION OF UNCOMPRESSED VIDEO USING SELECTIVE RETRANSMISSION - A system and method for wireless communication of data are disclosed. One embodiment of the system includes a transmitter configured to transmit a data packet including a plurality of displayable elements over a wireless channel. Each displayable element includes a plurality of portions including a most significant portion and a least significant portion. The data packet is divided into a plurality of data groups including a first data group and a second data group. The first data group includes the most significant portions of the displayable elements while the second data group includes the least significant portions of the displayable elements. The system also includes a receiver configured to receive the data packet over the wireless channel and to determine whether any of the data groups is in error. The transmitter is further configured to transmit to the receiver: a retransmission packet including a selected data group in error according to a quality of service associated with the displayable elements. One or more of the data groups can be included in the retransmission packet. | 05-28-2009 |
20090232049 | SYSTEM AND METHOD FOR A MULTIPLE HOP WIRELESS NETWORK - A system and method for wireless communication over a multi-hop network are disclosed. One embodiment of the system includes an access point and a plurality of wireless devices. Each of the access point and the plurality of wireless devices includes a high-rate module to send or receive data over a high-rate wireless channel having a first frequency; and a low-rate module to send or receive one or more control signals over a low-rate wireless channel having a second frequency lower than the first frequency. The low-rate modules of the wireless devices are configured to send information for establishing a multi-hop data route to the access point via the low-rate wireless channel. The access point is further configured to broadcast the information over the multi-hop wireless network via the low-rate wireless channel. This configuration efficiently disseminates the information over the network. | 09-17-2009 |
20100008347 | SYSTEM AND METHOD FOR RANDOM ACCESS SCHEME IN A WIRELESS AD-HOC NETWORK - A system and method for random access scheme in a wireless ad-hoc network is disclosed. In one aspect, the method comprises transmitting data to a receiving node in a wireless ad-hoc network in a first time block previously reserved for transmission. The method further comprises transmitting data to the receiving node in a second time block if the reservation is periodic, the second time block starting at a time being a fixed amount of time L after the start of the first time block. | 01-14-2010 |
20100009635 | SYSTEM AND METHOD FOR ANTENNA TRAINING OF BEAMFORMING VECTORS HAVING REUSE OF DIRECTIONAL INFORMATION - A system and method for reusing existing directional information to configure antennas in a wireless network is disclosed. The method includes retrieving existing directional information, the existing directional information having been established in a previous antenna training session with a receiver. The method further includes performing a signal-to-noise ratio (SNR) estimation procedure comprising: transmitting an SNR estimation probe message to the receiver via a directional antenna tuned with the existing directional information, and determining whether an estimated SNR value associated with the SNR estimation probe message is equal to or greater than a threshold SNR value. The method further includes transmitting a data message to the receiver via the directional antenna tuned with the existing directional information if it is determined that the estimated SNR value is equal to or greater than the threshold SNR value. | 01-14-2010 |
20100020770 | SYSTEM AND METHOD FOR BANDWIDTH RESERVATION PROTOCOL FOR SPATIAL REUSE IN A WIRELESS COMMUNICATION NETWORK - A system and method for providing spatial reuse in a wireless network for communicating compressed and uncompressed audio/video is disclosed. A bandwidth reservation request for data communication with a receiver to a coordinator is transmitted. A first response indicating availability of the receiver for the data communication is received. A channel is listened to by a station for channel busy indication (CBI) messages transmitted by other stations in the wireless network. A local channel occupation report comprising data indicative of one or more time periods during which one or more other stations in the wireless network are scheduled to transmit data messages is transmitted to the coordinator. A second response comprising data indicative of one or more allocated channel time slots is received. Audio and/or video (A/V) data is transmitted to the receiver during the allocated channel time slots. | 01-28-2010 |