Patent application number | Description | Published |
20100098080 | Payload Header Suppression with Conditional Field Suppression - A conditional payload header suppression is disclosed to improve compression, by providing the flexibility to dynamically introduce fields/header bytes, which change temporarily or infrequently in packets. The embodiment also uses a dynamic mask as part of the payload header suppression packet to indicate which of the conditionally suppressed header bytes are present in the packet sent over the air or the communication medium. An embodiment of this invention increases the header compression for packets such as IP/UDP/RTP (VOIP) and TCP ACK in communication networks, such as WiMax. | 04-22-2010 |
20110026446 | Variable short interframe space - Apparatuses, systems, and methods for transmitting data frames over data networks with varying Interframe Space (IFS) times are disclosed. A system embodiment may comprise a mobile computing device with an integrated wireless networking card. The card may receive a transmission of several data frames. While receiving the several data frames, the networking card may determine that a response will need to be transmitted back to the sending station after the sending station sends the last frame of data. After a short period of delay following the end of the last transmitted frame the card may immediately begin transmitting a preamble of the response, while still demodulating and processing data of the transmitted frames. Upon finishing data processing of the remaining frames, the card may generate the content for the rest of the response, such as a block acknowledgment. | 02-03-2011 |
20110080887 | AGGREGATED TRANSMISSION IN WLAN SYSTEMS WITH FEC MPDUs - In various embodiments, a wireless device may determine the quality of a channel by transmitting at least one packet to another device and receiving from that other device an indicator of the quality of the channel. Based on the quality indicator, the device may determine an estimated packet error rate, and subsequently transmit few enough packets that if the estimated percentage of those packets fail, there will be time to retransmit them. | 04-07-2011 |
20110149723 | Packet-loss handling for downlink multi-user multiple- input and multiple-output wireless network - Techniques for packet-loss handling for downlink Multi-User Multiple-input and Multiple-Output (DL MU-MIMO) wireless networking environment are described herein. The techniques described herein help define how a wireless access point should behave when faced with a packet-loss situation of a DL transmission burst in a MU-MIMO wireless network. | 06-23-2011 |
20110154038 | Multi-band/multi-link secure key generation and delivery protocol - A method is described for negotiating the use of multi-link ciphering and for the generation of unique keys for each of the links using a single 4-way handshake protocol exchange. | 06-23-2011 |
20110158110 | METHOD AND SYSTEM FOR MULTIBAND RATE SCALING - A system and method for multiband rate scaling for communication, particularly wireless communication. A band is used as a parameter for wireless communication performance when a wireless communication channel has a plurality of available bands for communication. A selected communication band may be switched to another available communication band, where the switching may be based on a desired performance determination. | 06-30-2011 |
20110188518 | Coded bit padding - A method is described for adding coded bit padding for a orthogonal frequency division multiplexing (OFDM) data transmission device. | 08-04-2011 |
20110268094 | Systems and methods for uplink multi-user multiple input multiple output (MU MIMO) medium access and error recovery - Embodiments of systems and methods for uplink multi-user multiple input multiple output (MU MIMO) medium access and error recovery are generally described herein. Other embodiments may be described and claimed. | 11-03-2011 |
20120082040 | 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. | 04-05-2012 |
20120163354 | SINGLE MPDU FRAME SIGNALING - Embodiments of systems and methods for providing single MPDU frame signaling are generally described herein. Other embodiments may be described and claimed. | 06-28-2012 |
20130132500 | SELECTION OF A MASTER IN A PEER-TO-PEER NETWORK ENVIRONMENT - A system, apparatus and method for selecting master devices in a peer-to-peer communication environment. Devices select a master to facilitate their synchronization, and rendezvous according to a schedule of availability windows broadcast by the master as part of periodic synchronization frames. Devices capable of serving as master advertise their selection metrics, which are converted into a master preference value by a selection algorithm applied uniformly by all devices in the environment. Individual devices may identify the best local master and synchronize to it, yielding a cluster of synchronized peers. Clusters may then be synchronized to masters at further range. Individual devices conserve power by being automatically synchronized instead of having to individually discover other devices and services, and can power off their radios without sacrificing discoverability. Synchronization and peer-to-peer communication as provided herein coexists with other device demands, such as Bluetooth® operations, infrastructure-based communications and so on. | 05-23-2013 |
20130132501 | SYNCHRONIZATION OF DEVICES IN A PEER-TO-PEER NETWORK ENVIRONMENT - A system, apparatus and method for synchronizing devices in a peer-to-peer communication environment. Devices select a master to facilitate their synchronization, and rendezvous according to a schedule of availability windows broadcast by the master. Devices may attend some or all of the availability windows, during which they may send and receive unicast and/or multicast messages. Individual devices conserve power by being automatically synchronized instead of having to individually discover other devices and services, and can power off their radios without sacrificing discoverability. Synchronization and peer-to-peer communication as provided herein coexists with other device demands, such as Bluetooth® operations, infrastructure-based communications and so on. | 05-23-2013 |
20130148529 | METHOD AND SYSTEM FOR MULTIBAND RATE SCALING - A system and method for multiband rate scaling for communication, particularly wireless communication. A band is used as a parameter for wireless communication performance when a wireless communication channel has a plurality of available bands for communication. A selected communication band may be switched to another available communication band, where the switching may be based on a desired performance determination. | 06-13-2013 |
20140044117 | SINGLE MPDU FRAME SIGNALING - Embodiments of systems and methods for providing single MPDU frame signaling are generally described herein. Other embodiments may be described and claimed. | 02-13-2014 |
20140192742 | ACCESS POINT AND METHOD FOR COMMUNICATING WITH STATIONS INACCORDANCE WITH A MULTIPLE-ACCESS TECHNIQUE - 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. | 07-10-2014 |
20150078366 | MULTI-CARRIER 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. | 03-19-2015 |
20150319555 | METHOD AND APPARATUS FOR BLUETOOTH-BASED WI-FI SYNCHRONIZATION - The disclosure relates to a method and apparatus for leveraging Bluetooth (BT) or Bluetooth low energy (BLE) technologies to conserve energy in multi-mode devices. In one embodiment, the disclosure relates to synchronizing a first wireless platform with a second wireless platform by exchanging Wi-Fi synchronization information through BT packets. Each of the first and the second wireless platforms may have integrated Wi-Fi (or other communication modalities) with a BT radio. In one embodiment of the disclosure, the Wi-Fi communication modes are kept at sleep mode while the BT modalities exchange synchronization information. | 11-05-2015 |
20150319674 | METHOD AND APPARATUS FOR BLUETOOTH-BASED GENERAL SERVICE DISCOVERY - The disclosure relates to a method, system and apparatus for extending Bluetooth low energy (BLE) technology to conserve energy in multi-mode wireless devices. In one embodiment, the disclosure relates to a device comprising a first module configured for radio communication at a non-BLE communication mode; a second module to communicate at a BLE communication mode; and a controller for controlling the first and the second communication modules, the controller configured to direct the BLE communication mode to at least one of advertise or scan for information relating to the non-BLE communication mode. | 11-05-2015 |
20150319695 | BLUETOOTH ASSISTED NAN CLUSTER DISCOVERY - Disclosed herein are techniques to enable discovery of a NAN cluster using low-power communication. According to such techniques, a NAN discovery beacon including information indicative of a schedule for communication using a first radio is transmitted using a second radio that utilizes a lower amount of power relative to the first radio. | 11-05-2015 |
20150358995 | APPARATUS, METHOD AND SYSTEM OF MULTI-USER DOWNLINK TRANSMISSION - Some demonstrative embodiments include devices, systems and methods of multi-user downlink transmission. For example, an apparatus may include a transmitter to transmit a multi-user (MU) downlink request to a plurality of wireless stations; and a receiver to receive one or more responses from one or more wireless stations of the plurality of wireless stations, wherein the transmitter is to transmit to the plurality of wireless stations a MU scheduling message indicating resources allocated to a downlink transmission to at least one scheduled station of the one or more wireless stations, and to transmit the downlink transmission to the at least one scheduled station according to the MU scheduling message. | 12-10-2015 |
20150359000 | MULTI-USER SCHEDULING CHANNEL STATUS REPORTING FOR WI-FI - Provided are systems and methods for polling, by a wireless network access point, a group of wireless network stations for an uplink transmission status, receiving (from one or more wireless network stations of the group of wireless network stations) an uplink transmission status report indicating that the wireless network station is ready for uplink data transmission, scheduling (in response to receiving the one or more uplink transmission status reports) one or more uplink data transmissions from the one or more wireless network stations, and receiving (from the one or more wireless network stations in accordance with the scheduling) one or more uplink data transmissions comprising uplink data. | 12-10-2015 |
20150381330 | ON THE DEFINITION OF THE RESOURCE BLOCK IN OFDMA/UL MUMIMO IN HEW - Techniques for resource block allocation in a multi-user MIMO High Efficiency WLAN system are provided. Specifically, teachings that when taken alone or together, provide a device or a group of devices with an improved resource allocation for the reduction of usable tone waste, are presented. The present disclosure includes a system that provides a user with a technique allocating data tones prior to the encapsulation unit or overhead tones on a resource block unit. Further, the total allocated bandwidth can be reduced prior resource allocation to overcome modulation and coding scheme downgrading caused by severe puncturing. Alternatively, only band edge basic resource blocks are reduced to account for overhead tones which largely reside on band edges. | 12-31-2015 |
20150382341 | FAST CHANNEL RESERVATION FOR WI-FI - Methods, apparatus, and systems for fast channel reservation in a Wi-Fi environment are discussed. More specifically, a communication station arranged for Clear Channel Assessment (CCA) channel status reporting, an access point, and communication methodologies therebetween are disclosed. Methods, apparatus, and systems described herein can be applied to 802.11ax downlink MU-MIMO as well as uplink MU-MIMO, either separately or simultaneously. | 12-31-2015 |
20160057754 | SUBCARRIER ALLOCATIONS FOR OPERATION IN MIXED BANDWIDTH ENVIRONMENTS - Embodiments of the disclosure provide bandwidth allocation in wireless telecommunications including communication devices that can operate according to different operating bandwidth. The bandwidth allocation can include allocation of subcarrier blocks having specific sizes. The subcarriers blocks can be contiguous within a channel or can be non-contiguous or distributed. | 02-25-2016 |
20160072564 | PARALLEL CHANNEL TRAINING IN MULTI-USER MULTIPLE-INPUT AND MULTIPLE-OUTPUT SYSTEM - This disclosure describes systems, and methods related to parallel channel training in communication networks. A first computing device comprising one or more processors and one or more transceiver component may receive a first connection request from a second computing device, and a second connection request from a third computing device. The first computing device may determine a first training field associated with the first connection request and a second training field associated with the second request. The first computing device may send the first training field to the second computing device based at least in part on the first connection request and sending in parallel, the second training field to the third computing device based at least in part on the second connection request. The first computing device may establish a first spatial channel stream with the second computing device based at least in part on the first training field and a second spatial channel stream with the third computing device based at least in part on the second training field. | 03-10-2016 |
20160087826 | SYSTEMS, METHODS, AND DEVICES FOR IDENTIFYING Wi-Fi SIGNALS FOR SPATIAL REUSE - Example systems, methods, and devices for differentiating Wi-Fi signals for spatial reuse are discussed. More specifically, a communication station arranged for Clear Channel Assessment (CCA) channel status reporting, an access point, and communication methodologies therebetween are disclosed. Methods, apparatus, and systems described herein can be applied to 802.11ax or any other wireless standard. | 03-24-2016 |
20160105271 | Systems, Methods, and Devices for Allocating OFDMA Subchannels Without Straddling Direct Current - Example systems, methods, and devices for reusing one or more architectural building blocks of IEEE 802.11 n/ac/ah network, and allocating one or more Orthogonal Frequency-Division Multiple Access (OFDMA) tones such that the one or more OFDMA allocations have fixed locations which do not straddle DC are disclosed. | 04-14-2016 |
20160105535 | SYSTEMS AND METHODS FOR SIGNAL CLASSIFICATION - This disclosure describes systems, and methods related to signal classification in a wireless communication network. A first computing device comprising one or more processors and one or more transceiver component may receive a signal transmission packet comprising a physical layer (PHY) preamble. The first computing device may identify within the PHY preamble, one or more signal (SIG) fields, wherein at least one of the one or more SIG fields includes at least a length field indicating a length of the signal transmission packet. The first computing device may determine based at least in part on the length field, that the signal transmission packet is associated with a predetermined communication standard utilized to transmit the signal transmission packet. The first computing device may decode the signal transmission packet based at least in part on the determination that the signal transmission packet is associated with the predetermined communication standard. | 04-14-2016 |
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 |
20150139090 | TRANSMIT TIME OFFSET IN UPLINK MULTI-USER MULTIPLE INPUT-MULTIPLE OUTPUT SYSTEM - A method for transmit time offset in a UL-MU-MIMO system monitors respective transmit powers, over a wireless channel, for a plurality of stations in the system. A respective transmit time offset is determined for each station in response to the respective transmit power of each station. A poll exchange sequence is initiated in which the transmit time offsets are transmitted to each respective station. An access point can then receive data from the stations at times adjusted by the respective transmit time offsets. | 05-21-2015 |
20150139119 | MASTER STATION AND METHOD FOR HEW COMMUNICATION USING A TRANSMISSION SIGNALING STRUCTURE FOR A HEW SIGNAL FIELD - Embodiments of a transmission signaling structure for HEW are defined to carry packet information to configure OFDMA receivers for demodulation of a specific portion of the packet and/or to configure receivers for transmission using specific OFDMA and MU-MIMO resources. In some embodiments, the specific portion of the packet comprises one or more minimum bandwidth units of one or more 20 MHz channels. Each 20 MHz bandwidth structure may comprise several minimum bandwidth units to allow each 20 MHz channel to have a have smaller granularity than 20 MHz. | 05-21-2015 |
20150257031 | 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. | 09-10-2015 |
20150327121 | METHOD, APPARATUS, AND COMPUTER READABLE MEDIA FOR ACKNOWLEDGEMENT IN WIRELESS NETWORKS - Embodiments of a system and method for communicating acknowledgments in a wireless network are generally described herein. In some embodiments, a method of wirelessly communicating acknowledgements includes receiving a first signal on a first subchannel from a second wireless device. The method may include transmitting a block acknowledgement of the first signal on a subchannel. The first wireless communication device may not receive a block acknowledgement request to transmit the block acknowledgement. In some embodiments, a method of communicating block acknowledgements includes transmitting a first transmission to a first wireless device on a first subchannel and a second transmission to a second wireless device on a second subchannel. The method may include receiving a first block acknowledgement from the first wireless device and a second block acknowledgement from second wireless device. The first and second block acknowledgement may be received on one of the first and second subchannels. | 11-12-2015 |
20150381336 | MULTI-USER AGGREGATION OVER FREQUENCY - Embodiments describe mechanisms for an Access Point (AP) to aggregate multiple devices (e.g., stations (STA)) across frequency during a single time period. STAs will be considered for frequency aggregation only if they have a measured SNR at the AP below a threshold. Methods are described that select STAs for aggregation based on associated SNR and other criteria and then assign frequency slots to the selected STAs. Selection for aggregation and assignment to frequency slots can also be balanced across time, so that different STAs are selected for aggregation over time. Mechanisms are also described that increase the opportunities for frequency aggregation. | 12-31-2015 |
20150382301 | MECHANISMS OF REDUCING POWER CONSUMPTION FOR NAN DEVICES - A wireless communication device comprises a transceiver configured to communicate information with one or more neighbor devices in accordance with a sync mode of a WiFi communication protocol, and a controller. The controller is configured to monitor for reception of at least one of a response frame or a beacon frame sent by any neighbor device, determine whether to schedule transmission of a service frame, and change operation to a background scan mode when the at least one of the response frame or the beacon frame sent by any neighbor device is undetected for a specified time duration and the transmission of a service frame is unscheduled. | 12-31-2015 |
20150382360 | SPATIAL REUSE OF WI-FI CHANNELS WITH INTERFERENCE ESTIMATION AND CONTROL - A transmitter/receiver pair may estimate a first channel interference caused during the spatial reuse phase by the transmitter/receiver pair to other transmitter/receiver pairs over a channel. A second channel interference experienced by the transmitter/receiver pair may be estimated during the spatial reuse phase by the transmitter/receiver pair from the other transmitter/receiver pairs. An interference margin may be estimated for the channel based on the first and second channel interferences. The interference margin may be announced to the other transmitter/receiver pairs in frame. The interference margin may then be complied with while communicating over the channel in order to control the interference. | 12-31-2015 |
20160020885 | HIGH-EFFICIENCY WIRELESS LOCAL-AREA NETWORK DEVICES AND METHODS FOR ACKNOWLEDGEMENTS DURING SCHEDULED TRANSMISSION OPPORTUNITIES - Embodiments of a system and method for acknowledging frames in a wireless network are generally described herein. In some embodiments, a wireless communication device may include a transmit/receive unit configured to receive data from a sender. In some embodiments, the transmit/receive unit may be configured to receive a schedule. The transmit/receive unit may be further configured to acknowledge (ACK) the data in a first scheduled transmission to the sender. The first scheduled transmission to the sender may be determined based on the schedule. In some embodiments, the acknowledgement may be an acknowledgement frame or a block acknowledgment frame. The scheduled transmission to the sender may be determined based on the schedule. | 01-21-2016 |
20160037441 | APPARATUS, METHOD, AND COMPUTER READABLE MEDIUM FOR HIGH-EFFICIENCY WIRELESS LOCAL-AREA NETWORK (HEW) SIGNAL FIELD DETECTION - Apparatuses, methods, and computer readable media are disclosed. A STA to detect a HE SIG may be configured to detect the HE SIG based on at least one from the following group: a flipped reserved bit, a scrambled portion of the HE SIG, and a rotation of a signal constellation of the HE SIG different than legacy rotations of: a rotation of a first signal constellation and no rotation of a second signal constellation, and no rotation of the first signal constellation and a rotation of the second signal constellation. The STA may determine that a reserved bit is the flipped reserved bit based on a bit being reversed from a legacy standard. The STA may unscramble a received signal field, determine whether a CRC indicates the HE-SIG contains errors, and if the CRC indicates there are no errors, then determine that the signal field is the HE SIG. | 02-04-2016 |
20160043793 | 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. | 02-11-2016 |
20160050622 | WIRELESS DEVICE, METHOD, AND COMPUTER READABLE MEDIA FOR TRANSMITTING AND RECEIVING BEACON FRAMES - Wireless devices, methods, and computer readable media for transmitting and receiving beacon frames are disclosed. A HEW device may include circuitry configured to: operate in accordance with OFDMA on a plurality of subchannels and a primary channel, and transmit a first beacon on the primary channel to one or more legacy devices. The circuitry may be further configured to transmit a second beacon on the plurality of subchannels to one or more HEW devices. The first beacon may be an 802.11 legacy beacon and the second beacon may be a HEW beacon. A HEW device may include circuitry configured to: tune to an assigned subchannel; and receive a HEW beacon on the assigned subchannel. The circuitry may be configured to: enter a power saving mode; leave the power saving mode; and receive another HEW beacon on the assigned subchannel to synchronize the HEW device with the AP. | 02-18-2016 |
20160050623 | WIRELESS DEVICE, METHOD, AND COMPUTER READABLE MEDIA FOR SYNCHRONIZATION IN A WIRELESS LOCAL-AREA NETWORK - Wireless devices, methods, and computer readable media for synchronization in a wireless local-area network. A method on a wireless communication device may include tuning to a first subchannel based on a schedule received from an access point (AP) the schedule to indicate that the HEW device is assigned to the first subchannel. The method may further include determining a target beacon receive time and tuning to a second subchannel to receive the target beacon at the target beacon receive time. The method may further include receiving the target beacon on the second subchannel and tuning back to the first subchannel. A method on an AP for synchronization may include transmitting information that indicates a target beacon receive time on a subchannel. The method may include not transmitting to a wireless communication device operating on a second subchannel for a period of time before the target beacon receive time, and transmitting a target beacon on a first subchannel at the target beacon receive time. | 02-18-2016 |
20160056943 | WIRELESS DEVICE, METHOD, AND COMPUTER-READABLE MEDIA FOR TRANSMITTING AND RECEIVING HIGH-EFFICIENCY SIGNAL FIELDS - Wireless devices, methods, and computer-readable media for transmitting and receiving high-efficiency signal fields. An access point (AP) may include circuitry configured to determine a high-efficiency signal (HE-SIG) field for each of a plurality of sub-channels, wherein each HE-SIG field includes a common part and a sub-channel specific part. The circuitry may be further configured to transmit, in accordance with orthogonal frequency division multiple access (OFDMA), on each of the plurality of sub-channels, a corresponding HE-SIG field as a preamble to a physical layer convergence protocol (PLCP) protocol data unit (PPDU), wherein the sub-channel specific part of the corresponding HE-SIG field includes a resource map field that enables a HEW device to determine which portion of the PPDU to demodulate, and wherein the common portion includes information of a format of the PPDU. A HEW device may include circuitry configured to demodulate a PPDU based on a HE-SIG field. | 02-25-2016 |
20160088513 | WIRELESS DEVICE, METHOD, AND COMPUTER READABLE MEDIA FOR CHANNEL CONTENTION IN WIRELESS COMMUNICATION DEVICES - Wireless device, method, and computer readable media for channel contention in wireless communication devices. The wireless communication device may include hardware processing circuitry configured to: determine to adapt the channel contention, and configured to adapt the channel contention settings by changing a level of a clear channel assessment (CCA) and adapting at least one additional channel contention setting. The hardware processing circuitry may be configured to adapt the channel contention settings by raising a level of the clear channel assessment (CCA) and by decreasing a power used to transmit, raising a back-off time, or modifying a portion of or parameter to a distributed coordination function (DCF). The hardware processing circuitry may be configured to adapt the channel contention settings by decreasing the clear channel assessment (CCA) and increasing a power used to transmit or decreasing an amount of time to wait after a CCA determines the channel is free. | 03-24-2016 |