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Spatial Streams

Spatial Streams-related patent applications - as published by the U.S. Patent and Trademark Office (USPTO).


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Beamforming techniques for single-stream communications
Qualcomm Incorporated
August 03, 2017 - N°20170222706

A method of adjusting single-stream transmissions by a wireless device based on channel state information (csi). The wireless device generates a sounding packet formatted for transmission via multiple spatial streams, and transmits the sounding packet to a receiving device via a single one of the multiple spatial streams. For example, the wireless device may be a single-antenna device. The wireless ...
Method and apparatus for changing operating mode in wireless local area network system
Lg Electronics Inc.
July 20, 2017 - N°20170208580

The present specification suggests a signal processing method for changing an operating mode to configure a ppdu in a wireless local area network (wlan) system. Specifically, a first station receives indication information indicating a change in operating mode that indicates a number of spatial streams and a receiving channel bandwidth that are supported by a second station from the second ...
Apparatus, system and method of communicating according to a transmit space-frequency diversity scheme
Intel Corporation
July 20, 2017 - N°20170207838

For example, a wireless station may be configured to modulate a plurality of data bit sequences into a plurality of data blocks in a frequency domain according to a dual carrier modulation, a data bit sequence of the plurality of data bit sequences to be modulated into first and second consecutive symbols in a data block of the plurality of ...
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Preamble design aspects for high efficiency wireless local area networks
Qualcomm Incorporated
June 22, 2017 - N°20170181130

Methods, apparatuses, and computer readable media for resource allocation signaling in a high efficiency wireless local area network (wlan) are disclosed. A receiver may receive, at a first station, a transmission frame that includes a wlan signaling field decodable by a plurality of stations. The receiver may identify, in a station-specific portion of the wlan signaling field, an order for ...
Method and apparatus for implementing space time processing
Interdigital Technology Corporation
June 08, 2017 - N°20170163383

A method and apparatus for implementing spatial processing with unequal modulation and coding schemes (mcss) or stream-dependent mcss are disclosed. Input data may be parsed into a plurality of data streams, and spatial processing is performed on the data streams to generate a plurality of spatial streams. An mcs for each data stream is selected independently. The spatial streams are ...
Systems and methods for calculating log-likelihood ratios in a mimo detector
Uurmi Systems Pvt Ltd
June 08, 2017 - N°20170163319

A method and a communication receiver have been described for calculating log-likelihood ratios in a communication receiver. The log-likelihood ratio is calculated for each bit of one or more subsymbols of each of the one or more spatial streams by computing effective noise on one or more spatial streams after considering noise terms resulting from mimo detection estimates of the ...
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Wireless station control of wlan receive operating mode change
Apple Inc.
May 04, 2017 - N°20170126461

A wireless local area network station (sta) changes a receiver operating mode (rom) and saves power by influencing when a rom-conforming access point (ap) transmission takes place. The sta evaluates candidate delay regimes after a negotiation exchange with the sta. The sta then instructs the ap of a selected delay regime which the ap is permitted to use when transmitting ...
Method and apparatus for transceiving a data frame in a wireless lan system
Lg Electronics Inc.
March 30, 2017 - N°20170094646

A method of transmitting a data frame by a transmitter in a wlan system is provided. The method includes generating a data block including at least one data units respectively transmitted through at least one or more spatial streams to at least one receiver, transmitting first control information to the at least one receiver, transmitting second control information to each ...
Scalable massive mimo
National Instruments Corporation
March 30, 2017 - N°20170093466

Techniques are disclosed relating to massive mimo communications. In some embodiments, a base station is configured to dynamically adjust the number of processing elements used for mimo signal estimation (e. G., the number of mimo rx chains used for parallel processing). In some embodiments, the number of processing elements may be based on the number of antennas currently being used, ...
Method and apparatus for transmitting signal in wireless communication system
Lg Electronics Inc.
March 09, 2017 - N°20170070273

A method and apparatus for transmitting a signal in a wireless communication system are provided. The method includes: generating r spatial streams each of which is generated on the basis of an information stream and a reference signal; generating n transmit streams on the basis of the r spatial streams and a precoding matrix (where r<n); mapping ...
Multi-user multiple-input-multiple-output grouping metrics
Qualcomm Incorporated
March 02, 2017 - N°20170064566

Methods, systems, and devices are described for wireless communication. In one aspect, a method of wireless communication includes receiving, by a wireless device, beamforming information from a plurality of stations. The beamforming information includes feedback signal-to-noise ratio (snr) values and beamforming feedback matrices. The method further includes determining a metric associated with a candidate group of the plurality of stations ...
Multicast negative acknowledgements using high-energy long-training fields for feedback
Qualcomm Incorporated
March 02, 2017 - N°20170063562

Apparatuses, computer readable media, and methods for multicast negative acknowledgements using high-energy long-training fields for feedback are disclosed. An apparatus of a wireless device is disclosed. The apparatus includes memory and processing circuitry coupled to the memory where the processing circuitry configured to: encode one or more packets in accordance with multicast or broadcast, cause to be transmitted the one ...
Method for setting modulation and coding scheme in wireless ran system and apparatus supporting the ...
Lg Electronics Inc.
February 09, 2017 - N°20170041913

A method and a transmitting station for transmitting data by using a multi-user multiple input multiple output (mu-mimo) in a wireless local area network system are discussed. The method according to an embodiment includes transmitting a physical layer convergence procedure (plcp) protocol data unit (ppdu) including a bundled interface field, a modulation and coding scheme (mcs) index field and a ...
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Scalable projection-based mimo detector
Qualcomm Incorporated
February 02, 2017 - N°20170033895

Systems and methods are disclosed that may detect data transmitted using mimo communications. Data may be received, on a wireless channel, as a plurality of spatial streams. A channel matrix characterizing the wireless channel may also be received. The channel matrix may be decomposed into a first sub-channel matrix and a second sub-channel matrix, each having a lower dimension than ...
Techniques for supporting definitions for reduced numbers of spatial streams
Qualcomm Incorporated
January 19, 2017 - N°20170019306

A method and apparatuses for wireless communication are described herein. An exemplary method may include generating a frame comprising: at least one bit indicating an operating bandwidth mode associated with a set of bandwidths, a first field having a value indicating a first number of spatial streams supported by the apparatus associated with a first subset of the set of ...
Uplink or downlink mu-mimo apparatus and method
Intel Ip Corporation
January 05, 2017 - N°20170005709

Generally discussed herein are systems and apparatuses that may include ul or dl using multiple user (mu) multiple input multiple output (mimo) or frequency multiplexing. The disclosure also includes techniques of using the systems and apparatuses. According to an example, a technique may include transmitting, using a plurality of spatial streams or sub-channels, a schedule frame (sch) to a plurality ...
Systems and methods for implementing an ofdma ltf design for wireless network communication
Marvell World Trade Ltd.
December 29, 2016 - N°20160380794

Systems, methods, and apparatuses are disclosed herein for aligning he-ltfs corresponding to a plurality of users by determining a respective number of spatial streams corresponding to each user, determining a highest respective number of spatial streams of the spatial streams, and setting an alignment number of he-ltf symbols to be equal to or larger than the highest respective number of ...
Method for power saving in wireless local area network and apparatus for the same
Lg Electronics Inc.
December 22, 2016 - N°20160374023

A method and a wireless apparatus for power saving in a wireless local area network are discussed. The method according to an embodiment includes receiving a frame including a signal field from a transmitting device. The signal field includes a number indicator and a power saving indicator. The number indicator indicates a number of spatial streams for a corresponding recipient, ...
Spatial multiplexing power save learning mode
Apple Inc.
December 08, 2016 - N°20160360489

Apparatus and methods for configuring wireless circuitry of a wireless communication device associated with a wireless local area network (wlan) access point (ap) to use a reduced power consumption mode are disclosed. While associated with a multiple-input multiple-output (mimo) wlan ap and operating in a mimo mode that includes at least two spatial streams for communication with multiple radio frequency (...
Method and apparatus for mimo wlan power optimization
Apple Inc.
December 08, 2016 - N°20160359661

Apparatus and methods for configuring wireless circuitry of a wireless device to optimize power consumption based on operating states of the wireless device are disclosed. When associating with or while associated with a multiple-input multiple-output (mimo) capable wireless local area network (wlan) access point (ap), the wireless device configures the wireless circuitry to use a mimo mode that includes at ...
Methods and apparatus for wlan transmission
Marvell World Trade Ltd.
November 24, 2016 - N°20160344511

A modulation coding scheme (mcs) is selected i) from a first set of mcss when the phy data unit is to be transmitted using a first channel bandwidth, and ii) from a second set of mcss when the phy data unit is to be transmitted using a second channel bandwidth. The first set of mcss corresponds to i) a number ...
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