Qualcomm Incorporated

Other

Gwendolyn Denise Barriac

Simone Merlin

Yan Zhou

George Cherian

Hemanth Sampath

Bin Tian

Sameer Vermani

Alfred Asterjadhi

Rahul Tandra

Dhananjay Ashok Gore

Gang Ding

Santosh Paul Abraham

Michael Mao Wang

Qingjiang Tian

Vincent Knowles Jones, Iv

James Arthur Proctor, Jr

Tamer Adel Kadous

Jibing Wang

Srinivas Katar

Tao Tian

Amin Jafarian

Hao Zhu

Chao Zou

Lawrence W Yonge, Iii

Steven J Howard

Kenneth Marvin Gainey

Alexei Yurievitch Gorokhov

Didier Johannes Richard Van Nee

Maarten Menzo Wentink

Sanjiv Nanda

Youhan Kim

James Simon Cho

Guido Robert Frederiks

Sony Akkarakaran

Rajat Prakash

Abhishek Pramod Patil

Raghu Narayan Challa

Peter J Black

Yang Yang

Arjun Bharadwaj

Carlos Horacio Aldana

Edward Harrison Teague

Rahul Malik

Jack M Holtzman

Ming-Chang Tsai

Ajit Venkat Rao

Sandeep Kanakapura Lakshmikantha

Richard Finch Dean

Tadeusz Jarosinski

Hakan Inanoglu

Peter John Black

Tushit Jain

Anand Prabhakar Satpute

Vinay Praneeth Boda

Vincent Knowles Jones Iv

Iv Vincent Knowles Jones

Lawrence Winston Yonge

Lawrence Winston Iii Yonge

Lawrence Winston Yonge Iii

Methods, systems, and devices are described for wireless communication at a station. The station identifies a first set of enhanced distributed channel access (EDCA) parameters for a first access category based at least in part on a first traffic type and a determination that a multiple user (MU) frame is to be transmitted, and contends to gain access for a transmission opportunity over a shared radio frequency spectrum band to communicate with a plurality of other stations in a MU mode. The contention is based at least in part on the first set of EDCA parameters.

Transmission opportunity contention for multiple user operation

This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for implementing a retransmission protocol in a wireless local area network (WLAN). The retransmission protocol enables a sending station (STA) to communicate additional parity bits associated with an original transmission that included forward error correction (FEC) encoded codewords. Several techniques are described for a receiving STA to indicate which portions of the original transmission was not properly received. The receiving STA may store the original transmission for use with additional parity bits in a subsequent transmission. The sending STA may communicate the additional parity bits in a subsequent transmission to assist the receiving STA recover the data from the original transmission.

Retransmission protocol based on forward error correction codewords

A method, an apparatus, and a computer-readable medium for wireless communication are provided. In one aspect, the example method may include generating a data frame including a Medium Access Control (MAC) header or a physical layer (PHY) header. The MAC header or the PHY header of the data frame may include transmit power related information. The transmit power related information may include at least one of: a maximum transmit power, power backoff per modulation and coding scheme information, or an actual transmit power. The method may include transmitting the data frame to a second device.

Signaling of transmit power related information

This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer storage media, for improving transmission opportunity (TxOP) truncation in wireless communication. In some implementations, a transmit opportunity (TxOP) period truncation or whether to update a network allocation vector (NAV) timing based on a message that includes transmitter and receiver information (such as a transmitter address (TA) and a receiver address (RA)) may be determined. For example, a station may receive a contention-free end (CF-End) frame and determine a TxOP period truncation based on comparing a TA and an RA included in the CF-End frame with a TA and an RA included in an earlier received message (e.g., an RTS). Such information may be compared to other TAs or RAs associated with NAV timing values and the NAV timing may be set, reset, updated, or canceled based on the comparison.

Transmission opportunity truncation

A method, an apparatus, and a computer-readable medium for wireless communication are provided. In one aspect, an apparatus may be configured to determining a TWT schedule. The apparatus may be configured to broadcast a message that includes the TWT schedule to a number of wireless devices. The message may include a broadcast indicator that indicates the TWT schedule is a broadcast TWT schedule. In another aspect, an apparatus may be configured to receive from a second wireless device a message that includes a TWT schedule. The message may include a broadcast indicator that indicates the TWT schedule is a broadcast TWT schedule. The apparatus may be configured to determine one or more TWTs for the apparatus based on the TWT schedule.

Triggered target wake time operation

Certain aspects of the present disclosure provide methods and apparatus for multi user bar protocols and frames. According to certain aspects, an apparatus is provided for wireless communications. The apparatus generally includes a processing system configured to determine that a plurality of devices have a first capability and generate a multi-user (MU) packet that solicits an immediate response from a plurality of the devices, wherein the immediate response comprises an acknowledgment (ACK) or block ACK (BA) and an interface configured to output the MU packet for transmission.

Protocols for multiple user frame exchanges

Methods, devices, and computer program products for traffic information signaling in a wireless communications network are disclosed. In one aspect, a method of wireless communication network is disclosed. The method includes selecting, from a variable number of control fields, one or more control fields for inclusion in a frame. The method further includes generating the frame comprising the selected number of control fields, each control field comprising an end of control field, the end of control field storing an indicator indicative of an end of the selected number of control fields or a presence of another control field in the frame. The method further includes transmitting the frame.

Methods and apparatus for communicating high efficiency control information

Methods and apparatus for managing reuse of a wireless medium are provided. One method of managing reuse of a wireless medium includes determining, at an access point, whether to allow reuse of the wireless medium by one or more stations in a basic service set (BSS). The method further includes transmitting, upon determining to allow reuse, an indication that reuse of the wireless medium can be permitted for stations meeting a criteria. The method further includes determining one or more reuse parameters. The method further includes transmitting the one or more reuse parameters.

Systems and methods for reuse of wireless communication resources in neighboring communication networks

Aspects of the present disclosure provide various mechanisms for protection of MU transmissions, such as UL MU MIMO and UL OFDMA. The mechanisms may allow for various NAV setting options for UL MU MIMO or UL OFDMA. Aspects of the present invention relate to a processing system configured to generate a first frame configured to trigger multiple transmissions from multiple devices, wherein the first frame has a duration field set to a value corresponding to a duration that covers at least the multiple transmissions, and an interface configured to output the frame for transmission.

Protection for multi-user transmissions

Methods, systems, and devices for frequency synchronization and phase correction at a rendering device are described. One method may include receiving, from a display device (e.g., a head-mounted display (HMD) device), a vertical sync count and an indication of one or more frame repeats. The rendering device may estimate a vertical sync frequency based on the received vertical sync count, and determine a phase corresponding to a minimum frame repeat based on the indication of the one or more frame repeats. The rendering device may adjust a vertical sync frequency to the estimated vertical sync frequency and a phase to the determined phase. The rendering device may transmit one or more frames to the display device using the adjusted frequency and/or the adjusted phase.

Frequency synchronization and phase correction

Methods and apparatus for multiple user uplink are provided. In one aspect, a method for wireless communication is provided. The method includes receiving a trigger frame from an access point, the trigger frame being transmitted to two or more stations and indicating an uplink transmission opportunity. The trigger frame further includes a request for the two or more stations to concurrently transmit uplink data at a specific time. The method includes transmitting uplink data at the specific time to the access point concurrently with another of the two or more stations transmitting uplink data to the access point.

Methods and apparatus for multiple user uplink

The present disclosure provides techniques for configuring the utilization of request-to-send/clear-to-send (RTS/CTS) protocol procedures based on varying conditions at the STA. For example, an AP may identify one or more conditions, when satisfied, may trigger the STA to either enable or disable uplink (UL) transmissions associated with a RTS/CTS protocol procedure. In some aspects, an AP may determine a transmit opportunity (TXOP) threshold for an STA and may determine whether to broadcast a message having the TXOP threshold to multiple STAs including the STA or unicast the message to the STA. An STA may receive a message from an AP having a TXOP threshold and may replace, based on an indication in the received message, a current TXOP threshold in the STA with the TXOP threshold in the received message. The STA may transmit an UL RTS frame in response to a determination that a planned TXOP duration satisfies the TXOP threshold.

Access point (AP) controlled uplink RTS/CTS configuration and disablement

Methods and apparatus for acknowledgment of multiple user uplink are provided. In one aspect, a method of wireless communication includes receiving a first wireless message from a first station at least partially concurrently with receiving a second wireless message from a second station, generating a first acknowledgment message in response to receiving the first wireless message, generating a second acknowledgement message in response to receiving the second wireless message, and transmitting the first acknowledgment message to the first station at least partially concurrently with transmitting the second acknowledgement message to the second station.

Methods and apparatus for acknowledgment of multi-user uplink wireless transmissions

Methods and apparatus for multiple user uplink are provided. In one aspect, a method includes receiving, at a wireless device, a trigger message allocating one or more wireless transmission resources, each resource allocated to a plurality of stations. The method further includes determining whether to transmit over the allocated resources based on a contention procedure. The method further includes selectively transmitting over the allocated resources based on said determining.

Methods and apparatus for multiple user uplink access

Growing community of inventors

Encinitas, CA, United States of America

Gwendolyn Denise Barriac