Patent application number | Description | Published |
20080234012 | Scheduling for power savings in a wireless network - In a wireless network, a wireless device may dynamically estimate how long it can remain in a sleep mode without missing out on a necessary opportunities to communicate within the network. In some embodiments, this estimate may be based on a combination of things such as the amount of data still queued up for transmission, recent history on data rates, a prediction on how long it will take another device (e.g., an access point) to accumulate enough data for another transmission, and/or how long the queued-up data can wait before it becomes stale. | 09-25-2008 |
20090213767 | Apparatus and method of block acknowledgements with reduced recipient state information - An apparatus and method for block acknowledgements with reduced recipient state information are described. In one embodiment, the method comprises the storing of a receive state for a block of frames received during a transmission opportunity (TXOP) with an on-chip state memory. Once stored, an immediate block acknowledgement, including the receive state information, may be transmitted to an originator according to a block acknowledgement request (BAR) received during the TXOP. In the embodiments described, the BAR is received during the TXOP in which the block of data frames were transmitted to a recipient. In one embodiment, the recipient is free to discard the receive state information to free space within the on-chip system memory by requiring the originator to maintain the receive state information of blocks of data frames transmitted during TXOPs. Other embodiments are described and claimed. | 08-27-2009 |
20100322130 | Techniques for broadcast/multicast delivery in wireless networks - An embodiment of the present invention provides an apparatus including a transceiver operable for broadcast/multicast traffic delivery in a wireless network, wherein the transceiver is adapted to identify local broadcast traffic and limit a broadcast domain to a basic service set (BSS) servicing the local broadcast traffic. | 12-23-2010 |
20110134894 | INVERSE MULTIPLEXING OVER 802.11 WIRELESS INTERFACES - In accordance with various aspects of the disclosure, a method and apparatus are disclosed that includes aspects of providing one or more data packets at a media access control-service access point of a transmitting device; dividing the one or more data packets into two or more streams of data packets, wherein the two or more streams of data packets are arranged for transmission on a separate wireless interface of the transmitting device; and transmitting the two or more streams of data packets over a wireless medium via their separate wireless interfaces. | 06-09-2011 |
20110141892 | DEVICE, SYSTEM AND METHOD OF SIMULTANEOUSLY COMMUNICATING WITH A GROUP OF WIRELESS COMMUNICATION UNITS - Some demonstrative embodiments include devices, systems and/or methods of simultaneously communicating with a group of wireless communication devices. For example, a wireless communication unit may assign a plurality of wireless communication devices to at least one Space-Division Multiple Access (SDMA) group based on traffic-specification (TSPEC) information corresponding to the plurality of wireless communication devices, wherein the wireless communication unit is to simultaneously transmit a plurality of different wireless communication transmissions to the plurality of wireless communication devices of the group, respectively. Other embodiments are described and claimed. | 06-16-2011 |
20110149731 | DEVICE, SYSTEM AND METHOD OF SCHEDULING COMMUNICATIONS WITH A GROUP OF WIRELESS COMMUNICATION UNITS - Some demonstrative embodiments include devices, systems and/or methods of scheduling communications with a group of wireless communication devices. For example, a wireless communication unit may transmit at least one scheduling frame including an indication of a downlink period allocated for simultaneous transmission from the wireless communication unit to at least one group of a plurality of wireless communication devices, wherein the wireless communication unit is to simultaneously transmit a plurality of different wireless communication transmissions to the plurality of wireless communication devices of the group during the downlink period. Other embodiments are described and claimed. | 06-23-2011 |
20110149881 | Methods and apparatus for weighted queuing in DL MU MIMO - Embodiment and methods and means for scheduling an access point (AP) traffic for multiple stations (STAs) in a downlink multiple-user multiple-input-multiple-output (MIMO) network transmission are provided for employing a weighted queuing mechanism. | 06-23-2011 |
20110149882 | Scheduling mechanisms for media access control protection and channel sounding - Channel sounding for spatial division multiple access (SDMA) under the IEEE 802.11 protocol is described. | 06-23-2011 |
20110149918 | DEVICE, SYSTEM AND METHOD OF SIMULTANEOUSLY COMMUNICATING WITH A GROUP OF WIRELESS COMMUNICATION DEVICES - Some demonstrative embodiments include devices, systems and/or methods of simultaneously communicating with a group of wireless communication devices. For example, a device may include a wireless communication unit to communicate with at least one group of a plurality of wireless communication devices over a wireless communication medium, wherein the wireless communication unit is to reserve the wireless communication medium for a time period, during which the wireless communication unit is to simultaneously transmit two or more different wireless communication transmissions to two or more wireless communication devices of the group, respectively. Other embodiments are described and claimed. | 06-23-2011 |
20110149927 | 802.11 VERY HIGH THROUGHPUT PREAMBLE SIGNALING FIELD WITH LEGACY COMPATIBILITY - In accordance with various aspects of the disclosure, a method and apparatus are disclosed that includes aspects of a controller configured to create a VHT frame that is arranged to include information relating to a modulation and a coding scheme with which a data portion of the VHT frame is modulated and encoded; and a transmitter configured to transmit the VHT frame to one or more STAs. | 06-23-2011 |
20110149941 | DEVICE, SYSTEM AND METHOD OF SIMULTANEOUSLY COMMUNICATING WITH A GROUP OF WIRELESS COMMUNICATION DEVICES - Some demonstrative embodiments include devices, systems and/or methods of simultaneously communicating with a group of wireless communication devices. For example, a device may include a wireless communication unit to transmit at least one beamforming-training initiation frame to a group of a plurality of wireless communication devices, wherein the wireless communication unit is to receive two or more feedback frames from two or more of the wireless communication devices, wherein the wireless communication unit is to determine two or more beamforming schemes based on the two or more feedback frames, and wherein the wireless communication unit is to simultaneously transmit two or more different wireless communication transmissions to the two or more wireless communication devices, respectively, using the two or more beamforming schemes, respectively. Other embodiments are described and claimed. | 06-23-2011 |
20110150110 | Tone Count Selection - A tone selection module selects tones suitable for use in an orthogonal frequency division multiplexing (OFDM) data transmission device based on several constraints. These constraints include number of available tones, modulation type, and code rate. The OFDM device may use either wired or wireless transmission. | 06-23-2011 |
20110150223 | WIRELESS DEVICE AND METHOD FOR REKEYING WITH REDUCED PACKET LOSS FOR HIGH-THROUGHPUT WIRELESS COMMUNICATIONS - Embodiments of a wireless device and methods for rekeying with reduced packet loss in a wireless network are generally described herein. In some embodiments, during rekeying operations a new key for reception may be installed early (i.e., prior to receipt of a rekeying confirmation message). The use of the new key for transmission may be delayed until after receipt of the rekeying confirmation message. The early installation of the new key for reception may allow both the new key and old key to be active at the same time for use decrypting received packets to reduce packet loss during rekeying operations. The rekeying confirmation message may be the fourth message of a four-way handshake for rekeying. In some embodiments, two key identifiers may be alternated between four-way handshakes to prevent deletion of the old key. | 06-23-2011 |
20110158159 | EFFICIENT UPLINK SDMA OPERATION - According to various embodiments, a computer-implemented method is disclosed that allows an AP to efficiently poll various information from STAs belonging to a SDMA group. Each STA may transmit uplink frames using uplink SDMA mechanism. | 06-30-2011 |
20110176489 | Apparatus and method of block acknowledgements with reduced recipient state information - An apparatus and method for block acknowledgements with reduced recipient state information are described. In one embodiment, the method comprises the storing of a receive state for a block of frames received during a transmission opportunity (TXOP) with an on-chip state memory. Once stored, an immediate block acknowledgement, including the receive state information, may be transmitted to an originator according to a block acknowledgement request (BAR) received during the TXOP. In the embodiments described, the BAR is received during the TXOP in which the block of data frames were transmitted to a recipient. In one embodiment, the recipient is free to discard the receive state information to free space within the on-chip system memory by requiring the originator to maintain the receive state information of blocks of data frames transmitted during TXOPs. Other embodiments are described and claimed. | 07-21-2011 |
20110216752 | MULTI-CARIER CONFIGURATION, ACTIVATION AND SCHEDULING - Embodiments of block acknowledgements request apparatus, systems, and methods are generally described herein. Other embodiments may be described and claimed. An aggregated block of a plurality of data frames is received from an originator transmission, with each data frame including a medium access control (MAC) header. An acknowledgement policy that is solicited by the originator is identified in a quality of service field in at least one of the MAC headers of the received transmission. A single block acknowledgement is transmitted to the originator acknowledging receipt of one or more of the plurality of data frames in the aggregated block of data frames. | 09-08-2011 |
20110235593 | Techniques for efficient acknowledgement for UL MU mimo and uplink OFDMA in wireless networks - An embodiment of the present invention provides a method of supporting acknowledgement transmissions for Uplink (UL) Multi-user Multiple Input Multiple Output (MU MIMO) in wireless networks, comprising, enabling an AP operable in the wireless network to send back acknowledgements to different wireless stations (STAs) in communication with said AP either sequentially or simultaneously by defining a new block ack (BAs) type for multiple STAs. | 09-29-2011 |
20110268002 | SCHEDULING FOR POWER SAVINGS IN A WIRELESS NETWORK - In a wireless network, a wireless device may dynamically estimate how long it can remain in a sleep mode without missing out on necessary opportunities to communicate within the network. In some embodiments, this estimate may be based at least partly on an estimate of how long it will take to transmit data in a transmit queue. | 11-03-2011 |
20110293029 | Tone count selection - In a device or system, a total tone count is determined or selected for modulating a data payload. Two or more code words are interleaved into the data payload, and the data payload is transmitted on a channel of the device or system. | 12-01-2011 |
20110317674 | MULTI-CHANNEL COMMUNICATION STATION FOR COMMUNICATING A MULTI-CHANNEL PPDU AND METHODS OF REDUCING COLLISIONS ON SECONDARY CHANNELS IN MULTI-CHANNEL WIRELESS NETWORKS - Embodiments of a very-high throughput communication station and method for communicating on a primary channel and up to three or more secondary channels are generally described herein. Short-preamble detection may be performed during a contention window to detect packet transmissions on any one of the secondary channels starting within the contention window. Guard-interval detection is also performed during the contention window to detect a guard interval of a packet transmission on any one of the secondary channels. The short-preamble detection and the guard-interval detection may be performed concurrently during the contention window to determine if any of the secondary channels are busy. | 12-29-2011 |
20120026928 | TECHNIQUES FOR UPLINK MULTI-USER MIMO MAC SUPPORT - An embodiment of the present invention provides a wireless station (STA), comprising a transceiver operable for communicating in a wireless network, wherein the transceiver is adapted for Uplink Multi-User Multiple Input Multiple Output (UL MU MIMO) Medium Access Control (MAC) support. | 02-02-2012 |
20120060075 | TECHNIQUES FOR UL MU MIMO SIGNALING AND ERROR HANDLING - An embodiment of the present invention provides a wireless station (STA), comprising a transceiver operable for communicating in a wireless network, wherein the transceiver is adapted to use signaling that enables the wireless station to communicate necessary information including a desired modulation coding scheme (MCS). | 03-08-2012 |
20120076179 | TECHNIQUES FOR MULTI-USER MIMO SOUNDING IN WIRELESS NETWORKS - An embodiment of the present invention provides an apparatus, comprising a transceiver operable as an access point and capable of communicating in a wireless network, the AP adapted to perform a down link multi user-multiple input multiple output (DL MU-MIMO) transmission and further adapted to transmit a null data packet (NDP) to sound channels between intended recipient wireless stations (STAs), and wherein following a DL MU-MIMO transmission of the NDP, the AP polls each of the STAs in turn for channel state information. | 03-29-2012 |
20120113806 | Bandwidth Adaptation Techniques in Wireless Communications Networks - Techniques are disclosed that involve bandwidth adjustment in wireless communications networks. For instance, an operating bandwidth may be established for wireless communications with one or more remote devices. This operating bandwidth may include a primary channel and one or more secondary sub-channels. Further, one or more statistics may be maintained that correspond to one of the one or more sub-channels. These statistics may be based on based on events on the corresponding sub-channel(s), such collisions, interference events, medium busy events, etc. Based on such statistics, the operating bandwidth may be decreased. Moreover, embodiments may increase the operating bandwidth based on output queue depth statistics. Further, a notification may be transmitted that indicates a change in the operating bandwidth. This notification may be in the form of a bandwidth change indication (BCI) frame. | 05-10-2012 |
20120147866 | FRAME FORMAT TECHNIQUES FOR NON-RESOLVABLE LONG TRAINING FIELDS IN WIRESLESS NETWORKS - An embodiment of the present invention provides non-resolvable long training field (LTF) formatting methods used in wireless networks, comprising defining the non-resolvable LTF frame format so that a transmission of VHT-SIG-B is aligned for all users, thereby requiring that a VHT-LTF portion of a packet be of a same duration for all users. | 06-14-2012 |
20120163483 | MU-MIMO ACCESS POINT AND USER STATION INCLUDING METHODS FOR MULTI-USER GROUP MANAGEMENT - Embodiments of a MU-MIMO access point, user station and method for multi-user group management are generally described herein. In some embodiments, a MU-MIMO access point may assign a MU group identifier (GID) and a group member index (GMI) to each of a plurality of associated user stations. The MU-MIMO access point may transmit a MU-MIMO transmission that includes a plurality of spatial streams. The MU-MIMO transmission may be destined for the user stations of a single MU group indicated by a GID that is included within the MU-MIMO transmission. A subset of the spatial streams may be intended for each user station of the indicated MU group that is identified by the GID transmitted within the MU-MIMO transmission. A user station may use its assigned GMI along with an N | 06-28-2012 |
20120177017 | TRANSMISSION RULES WITHIN A TXOP FOR WIDER BANDWIDTH OPERATION - A method of communicating in a wireless network comprises controlling a bandwidth or a transmission mask of a PPDU transmitted by a transmitting STA to a receiving STA within a TXOP based on bandwidth information in at least one preceding frame within the TXOP. The method and associated devices allow a control of TXOP bandwidth or transmission mask where devices capable of both dynamic and static bandwidth operation may be present within the network. The preceding frame may include a non-HT frame of a non-HT duplicate frame exchange, such as a non-HT duplicate RTS/CTS exchange or a BAR/BA exchange, where the bandwidth or the transmission mask would be controlled by being limited to be less than or equal to a bandwidth of the non-HT frame. The preceding frame may include a preceding PPDU, where the bandwidth or the transmission mask would be limited to be less than or equal to a bandwidth of the preceding PPDU. | 07-12-2012 |
20120236837 | INVERSE MULTIPLEXING OVER 802.11 WIRELESS INTERFACES - In accordance with various aspects of the disclosure, a method and apparatus are disclosed that includes aspects of providing one or more data packets at a media access control-service access point of a transmitting device; dividing the one or more data packets into two or more streams of data packets, wherein the two or more streams of data packets are arranged for transmission on a separate wireless interface of the transmitting device; and transmitting the two or more streams of data packets over a wireless medium via their separate wireless interfaces. | 09-20-2012 |
20120243451 | OVERLAY FOR SCRAMBLER BITS IN A WIRELESS COMMUNICATION - By using an exclusive OR operation between two values to create a third value, a wireless communications device may communicate all three values to another device while only transmitting two of the values. In a particular embodiment, a bandwidth-static/dynamic parameter may be conveyed in a Request-to-Send by transmitting a length field and a scrambler seed to be used in the subsequent communication, with the bandwidth-static/dynamic parameter encoded into the scrambler seed. The receiving device may then derive the bandwidth-static/dynamic parameter by performing another XOR on portions of the two received parameters. | 09-27-2012 |
20120275446 | 802.11 VERY HIGH THROUGHPUT PREAMBLE SIGNALING FIELD WITH LEGACY COMPATIBILITY - In accordance with various aspects of the disclosure, a method and apparatus are disclosed that includes aspects of a controller configured to create a VHT frame that is arranged to include information relating to a modulation and a coding scheme with which a data portion of the VHT frame is modulated and encoded; and a transmitter configured to transmit the VHT frame to one or more STAs. | 11-01-2012 |
20130128837 | DEVICE, SYSTEM AND METHOD OF SIMULTANEOUSLY COMMUNICATING WITH A GROUP OF WIRELESS COMMUNICATION DEVICES - Some demonstrative embodiments include devices, systems and/or methods of simultaneously communicating with a group of wireless communication devices. For example, a device may include a wireless communication unit to transmit at least one beamforming-training initiation frame to a group of a plurality of wireless communication devices, wherein the wireless communication unit is to receive two or more feedback frames from two or more of the wireless communication devices, wherein the wireless communication unit is to determine two or more beamforming schemes based on the two or more feedback frames, and wherein the wireless communication unit is to simultaneously transmit two or more different wireless communication transmissions to the two or more wireless communication devices, respectively, using the two or more beamforming schemes, respectively. Other embodiments are described and claimed. | 05-23-2013 |
20130132502 | SELECTION OF SYNCHRONIZATION STATIONS IN A PEER-TO-PEER NETWORK ENVIRONMENT - A system, apparatus and method for selecting one or more synchronization stations, or masters, in a peer-to-peer communication environment. Synchronization (or sync) stations broadcast periodic synchronization frames to advertise future availability windows, during which devices rendezvous for discovery and communication. Devices that can act as sync stations advertise preference values, which indicate their preference or suitability for the role. All devices execute the same algorithm to sort the preference values and identify a root sync station and any number of branch sync stations; leaf devices synchronize with the root or a branch sync station. This passive synchronization scheme allows individual devices to conserve power, because they need not actively discover other devices and services, and can power off their radios for periods of time without sacrificing discoverability. Synchronization and peer-to-peer communication as provided herein coexist with other device demands, such as Bluetooth® operations and infrastructure-based communications. | 05-23-2013 |
20130142097 | DEVICE, SYSTEM AND METHOD OF SCHEDULING COMMUNICATIONS WITH A GROUP OF WIRELESS COMMUNICATION UNITS - Some demonstrative embodiments include devices, systems and/or methods of scheduling communications with a group of wireless communication devices. For example, a wireless communication unit may transmit at least one scheduling frame including an indication of a downlink period allocated for simultaneous transmission from the wireless communication unit to at least one group of a plurality of wireless communication devices, wherein the wireless communication unit is to simultaneously transmit a plurality of different wireless communication transmissions to the plurality of wireless communication devices of the group during the downlink period. Other embodiments are described and claimed. | 06-06-2013 |
20130250887 | DEVICE, SYSTEM AND METHOD OF SIMULTANEOUSLY COMMUNICATING WITH A GROUP OF WIRELESS COMMUNICATION UNITS - Some demonstrative embodiments include devices, systems and/or methods of simultaneously communicating with a group of wireless communication devices. For example, a wireless communication unit may assign a plurality of wireless communication devices to at least one Space-Division Multiple Access (SDMA) group based on traffic-specification (TSPEC) information corresponding to the plurality of wireless communication devices, wherein the wireless communication unit is to simultaneously transmit a plurality of different wireless communication transmissions to the plurality of wireless communication devices of the group, respectively. Other embodiments are described and claimed. | 09-26-2013 |
20130308580 | MULTI-CHANNEL COMMUNICATION STATION FOR COMMUNICATING A MULTI-CHANNEL PPDU AND METHODS OF REDUCING COLLISIONS ON SECONDARY CHANNELS IN MULTI-CHANNEL WIRELESS NETWORKS - Embodiments of a very-high throughput communication station and method for communicating on a primary channel and up to three or more secondary channels are generally described herein. Short-preamble detection may be performed during a contention window to detect packet transmissions on any one of the secondary channels starting within the contention window. Guard-interval detection is also performed during the contention window to detect a guard interval of a packet transmission on any one of the secondary channels. The short-preamble detection and the guard-interval detection may be performed concurrently during the contention window to determine if any of the secondary channels are busy. | 11-21-2013 |
20140126722 | WIRELESS DEVICE AND METHOD FOR REKEYING WITH REDUCED PACKET LOSS FOR HIGH-THROUGHPUT WIRELESS COMMUNICATIONS - Embodiments of a wireless device and methods for rekeying with reduced packet loss in a wireless network are generally described herein. In some embodiments, during rekeying operations a new key for reception may be installed early (i.e., prior to receipt of a rekeying confirmation message). The use of the new key for transmission may be delayed until after receipt of the rekeying confirmation message. The early installation of the new key for reception may allow both the new key and old key to be active at the same time for use decrypting received packets to reduce packet loss during rekeying operations. The rekeying confirmation message may be the fourth message of a four-way handshake for rekeying. In some embodiments, two key identifiers may be alternated between four-way handshakes to prevent deletion of the old key. | 05-08-2014 |
20140233467 | SCHEDULED ABSENCE ON A WIRELESS LOCAL AREA NETWORK - A method for scheduling absence periods on a WLAN is provided. The method can include a WLAN station joining a WLAN served by a WLAN access point using an operating channel; formatting a message defining an absence schedule of absence periods during which the WLAN station will be off of the operating channel and unavailable to receive traffic on the operating channel; sending the message to the WLAN access point to register the absence schedule with the WLAN access point; and leaving and returning to the operating channel in accordance with the absence schedule after the absence schedule has been registered with the WLAN access point. | 08-21-2014 |
20140301260 | SYSTEM AND METHOD FOR ENABLING LOW POWER DEVICES - Various embodiments are directed to a wireless access point capable of reserving a wireless communication channel by sending a quiet message to multiple legacy devices. The quiet message may include data identifying periodic quiet durations during which the legacy devices cannot access the wireless communication channel. The wireless access point may send a polling schedule to the multiple low power wireless devices. The polling schedule may include data identifying the periodic quiet durations. The wireless access point may then poll the multiple low power wireless devices during the periodic quiet durations. The low power wireless devices can exchange data with the wireless access point during the quiet durations. The quiet message sent to the legacy devices guarantees that the legacy devices will not use the specified channel during the quiet durations. Thus, communications with the low power wireless devices may occur without interference from the legacy devices. | 10-09-2014 |
20140369303 | METHOD AND APPARATUS FOR COLLISION DETECTION IN WIDER BANDWIDTH OPERATION - Embodiments of systems and methods for providing collision detection in a wider bandwidth are generally described herein. Other embodiments may be described and claimed. | 12-18-2014 |
20150023171 | DEVICE, SYSTEM AND METHOD OF SCHEDULING COMMUNICATIONS WITH A GROUP OF WIRELESS COMMUNICATION UNITS - Some demonstrative embodiments include devices, systems and/or methods of scheduling communications with a group of wireless communication devices. For example, a wireless communication unit may transmit at least one scheduling frame including an indication of a downlink period allocated for simultaneous transmission from the wireless communication unit to at least one group of a plurality of wireless communication devices, wherein the wireless communication unit is to simultaneously transmit a plurality of different wireless communication transmissions to the plurality of wireless communication devices of the group during the downlink period. Other embodiments are described and claimed. | 01-22-2015 |