Qualcomm Incorporated

Other

Nokia Corporation

Motorola Mobility LLC

Motorola Solutions, Inc.

Qualcomm Innovation Center, Inc.

Qualcomm Technologies, Inc.

Google Technology Holdings LLC

George Cherian

Abhishek Pramod Patil

Alfred Asterjadhi

Santosh Paul Abraham

Simone Merlin

Sai Yiu Duncan Ho

Yan Zhou

Yanjun Sun

Alireza Raissinia

Gwendolyn Denise Barriac

Bin Tian

Lochan Verma

Jun Wang

Gaurang Naik

Jouni Kalevi Malinen

Abdel Karim Ajami

Venkata Ramanan Venkatachalam Jayaraman

Guido Robert Frederiks

Gang Ding

Maarten Menzo Wentink

Hemanth Sampath

Sandip HomChaudhuri

Soo Bum Lee

Stephen Jay Shellhammer

James Simon Cho

Qingjiang Tian

Sameer Vermani

Anand Palanigounder

Youhan Kim

Philip Michael Hawkes

Amin Jafarian

Jialing Li Chen

Srinivasan Balasubramanian

Lin Yang

Ravi H Gidvani

Xiaoxia Zhang

Srinivas Katar

Kuo-Chun Lee

Peerapol Tinnakornsrisuphap

Linhai He

Xipeng Zhu

Gordon Kent Walker

Christopher G Lott

Ashish Kumar Shukla

Dung Ngoc Doan

Ravindra Manohar Patwardhan

Andrea Garavaglia

Donna Ghosh

Debesh Kumar Sahu

Arjun Bharadwaj

Lawrence W Yonge, Iii

Marcello Vincenzo Lioy

Rahul Tandra

Arungundram C Mahendran

Rashid Ahmed Attar

John Nasielski

Suli Zhao

Ashwin Deepak Swaminathan

Gang Bao

Parag Arun Agashe

Vincent Knowles Jones, Iv

Rashid Ahmed Akbar Attar

Ajith Tom Payyappilly

Rahul Malik

Gerardo Giaretta

Uppinder Singh Babbar

Charles Nung Lo

Aleksandar Damnjanovic

Yisheng Xue

Nathan Edward Tenny

Solomon B Trainin

Yang Yang

Arnaud Meylan

Jay Kumar Sundararajan

Haris Zisimopoulos

Fatih Ulupinar

Carlos Horacio Aldana

Bongyong Song

Ning Zhang

Vinay Sridhara

Kalle Ahmavaara

Xiaolong Huang

Osok Song

Xiaoxin Zhang

Giridhar Dhati Mandyam

Ralph Akram Gholmieh

Arvind Swaminathan

Zhanfeng Jia

Li Ding

Haipeng Jin

Mingxi Fan

Aleksandar Gogic

Shyamal Ramachandran

Roozbeh Atarius

Ajay Gupta

Nagaraju Naik

Jen Mei Chen

Carlos Marcelo Dias Pazos

Naveen Kumar Kakani

Yinian Mao

Methods, systems, and devices for wireless communications are described. A wireless device that operates in a wireless local area network may include an auxiliary radio and a main radio and may operate in both an auxiliary radio mode and a main radio mode. The auxiliary radio may support both transmitting and receiving or may support receiving only. The wireless device may indicate parameters associated with an auxiliary radio mode and/or with transitioning from the auxiliary radio mode to a main radio mode. The auxiliary radio may perform additional functions while the wireless device communicates with a second wireless device on a wireless link using the main radio. For example, the auxiliary radio may monitor channel metrics of the wireless link, receive and/or transmit control communications with the second wireless device, receive and/or transmit high importance data communications, or scan for and/or initiate connections via other wireless channels.

Methods for improving wireless performance using auxiliary radios

This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for advertising operating channels that are being operated in an unlicensed frequency band. One or more access points (APs) may transmit discovery information on a dedicated discovery channel for the unlicensed frequency band. The discovery information may indicate at least one operating channel that is being used by an AP for providing wireless access. The discovery information also may include other information useful for a station (STA) to discover APs, operating channels, and operating parameters. The STA may monitor the dedicated discovery channel to obtain the discovery information without conducting an active scanning or passive scanning procedure.

Discovery channel for unlicensed frequency band

This disclosure provides methods, devices and systems for transmitting and receiving physical protocol data units (PPDUs) over multiple links. In some aspects, a wireless communication device may determine that first random back off (RBO) for a first channel of a first link has counted down to zero. A wireless communication device may determine, when the first RBO has counted down to zero, that a second RBO for a second channel of a second link has a count down remaining. A wireless communication device may optionally transmit a medium reservation message on the first link reserving a transmission opportunity (TXOP). A wireless communication device may determine whether to wait for the second RBO before transmitting on the first link. A wireless communication device may transmit at least a first PPDU on the first link during the TXOP.

Uplink (UL) aggregation for multi-link operation (MLO)

Certain aspects of the present disclosure provide a method for wireless communication at a first station. The method generally includes establishing at least one communication link with a second station and transmitting, to a first MLD, an indication of the communication link and a time period in which the first station will operate on the communication link.

Coordinating multi-link operation with communication links

Methods, systems, and devices for wireless communications are described. A first wireless device and a second wireless device (e.g., access points, stations) may support transmission opportunity (TXOP) sharing procedures. The second wireless device may transmit a frame indicating a capability of the second wireless device to support one or more triggered TXOP sharing modes. The second wireless device may transmit an indication (e.g., a frame) indicating to change support for the triggered TXOP sharing modes based on the capability. The change may indicate to suspend, resume, disable, or enable the triggered TXOP sharing modes. For example, the second wireless device may transmit an indication to suspend support of a first triggered TXOP sharing mode that enables the second wireless device to perform peer-to-peer transmissions. Accordingly, the first wireless device may trigger the second wireless device to communicate according to the supported triggered TXOP sharing modes.

Dynamic selection of triggered transmission opportunity sharing modes

This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for protecting latency-sensitive communications among multi-link devices (MLDs). An access point (AP) MLD may establish multiple communication links with a non-AP MLD and schedule a restricted target wake time (r-TWT) service period (SP) on one of the links (the 'r-TWT link'). In some aspects, when a transmit opportunity (TXOP) acquired on a non-r-TWT link overlaps the r-TWT SP, the TXOP may be extended to support an exchange of latency-sensitive traffic on the non-r-TWT link. In some other aspects, any TXOPs occurring on non-r-TWT links may be terminated prior to the start of the r-TWT SP so that latency-sensitive traffic can be exchanged on the r-TWT link during the SP. An AP MLD also may schedule SPs on multiple communication links. In some aspects, the AP MLD may transfer a TWT agreement between the communication links.

Low latency solutions for restricted target wake time (R-TWT) during multi-link operation (MLO)

This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for signaling between an access point (AP) multi-link device (MLD) and a non-AP MLD that support multi-link communication in a wireless local area network (WLAN). In some implementations, a multi-link association may include a first link (referred to as an anchor link) and one or more other links (referred to as auxiliary links). The signaling may include control information to activate or deactivate auxiliary links dynamically based on communication load, throughput requirements, or quality of service (QOS). The signaling also may include requests, acknowledgments, or negotiation regarding multi-link connections. Furthermore, signaling and timing information may be used to coordinate when auxiliary links are used for communication or when to promote an auxiliary link to an anchor link.

Signaling for multi-link communication in a wireless local area network (WLAN)

This disclosure provides systems, methods, and apparatuses for wireless communication performed by a wireless communication device. An example wireless communication device includes an access point (AP) multi-link device (MLD). The AP MLD transmits a beacon frame to a wireless station (STA) MLD, the beacon frame including a plurality of AP medium access control (MAC) addresses of respective APs belonging to the AP MLD. The AP MLD receives an association request from the STA MLD, the association request including a plurality of STA MAC addresses of respective STAs belonging to the STA MLD. The AP MLD generates, during a handshake operation with the STA MLD, one or more encryption keys configured to encrypt communications between the AP MLD and the STA MLD. The AP MLD verifies the plurality of STA MAC addresses based at least in part on the one or more encryption keys.

Multi-link wireless communication security

Methods, systems, and devices for wireless communication at a multi-link device are described. A first multi-link device (MLD) may communicate with a second MLD in accordance with the techniques depicted herein. For instance, the second MLD may transmit an indication of at least a portion of a beacon interval timeline for communications between the second MLD and one or more first MLDs on a first radio frequency link. In some examples, the beacon interval timeline may include at least one of a beacon transmit interval, and one or more service periods, channel access over a second radio frequency link being via the one or more service periods. A service period may be scheduled for communications on the second radio frequency link. The second MLD may then communicate in accordance with at least one of the beacon transmit interval and the one or more service periods.

Techniques for channel access in wireless communications systems

Methods, systems, and devices for wireless communications are described. A first wireless device (e.g., station (STA), access point (AP)) may transmit to a second wireless device during a service period, an initiating frame using a transmit beam that is based on a first beam training procedure performed between the devices prior to the service period. The first wireless device may perform a second beam training procedure during the service period based on an absence of a response frame from the second wireless device, based on an indication within the response frame received from the second wireless device, or based on identification of a change in a wireless channel relative to a previous beam training interval or previous service period. The first wireless device may then communicate one or more messages with the second wireless device using one or more beams that are based on the second beam training procedure.

Beam training techniques in WiFi frequency bands

Certain aspects of the present disclosure provide techniques for wireless communication at a station, generally including obtaining signaling indicating a resolution of a target wake time (TWT) field, determining a start time of a TWT service period (SP) based on the indicated resolution, and taking action based on the determined start time of the TWT SP.

Synchronization of target wakeup times

This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for high frequency multi-link support systems operation. In some aspects, an access point (AP) multi-link device (MLD) and a non-AP MLD may use a first radio frequency link to support and facilitate communications using a second radio frequency link, where such a second radio frequency link may otherwise be associated with access constraints or difficulties. For example, the first radio frequency link may be a sub-7 gigahertz (GHz) link and the second radio frequency link may be a 3.5 GHz, 45 GHz, or 60 GHz link. The AP MLD may transmit, to the non-AP MLD via the first radio frequency link, identifying and control information associated with the second radio frequency link. The non-AP MLD and the AP MLD may use the identifying and control information to communicate data via the second radio frequency link.

High frequency multi-link support systems operation

Techniques for improved spatial reuse for wireless local area network (WLAN) networks are described. An access point (AP) may win a contention to a wireless medium and obtain a transmission opportunity (TXOP). The AP may perform a procedure to identify a group of un-managed APs for participation in spatial reuse opportunities for synchronous transmission over the TXOP. The AP may perform the procedure using over-the-air signaling. The AP may transmit a spatial reuse (SR) poll frame to one or more un-managed APs of the network, either sequentially or as part of a multiple-AP procedure. The AP may receive an SR response frame, or directly measure potential interference of a station (STA) serviced by one or more un-managed APs, and select a group of APs for coordinated reuse over the TXOP. The AP may select the group of APs based on one or more criteria for coordinated reuse.

Spatial reuse for WLAN networks

This disclosure provides systems, devices, apparatus and methods, including computer programs encoded on storage media, for providing uplink broadcast service connectivity via a wireless local area network (WLAN). In some implementations, a wireless device may transmit an uplink communication to an access point (AP) that supports uplink broadcast services, and the AP may forward the uplink communication to a remote destination indicated in the uplink communication. In some implementations, the wireless device may be in an unassociated state and may transmit the uplink communication without establishing a formal wireless session with the AP. The uplink communication may include a request for the AP to embed AP-provided data to the uplink communication before forwarding it the remote destination. This disclosure includes techniques to prevent flooding and unauthorized uplink communications being used for a denial of service attack on the remote destination.

Uplink broadcast service in a wireless local area network (WLAN)

Aspects relate to changing at least one communication parameter. In some examples, the at least one communication parameter may include at least one of an association identifier (AID), a packet number (PN), a sequence number (SN), a traffic identifier (TID), a timing synchronization function (TSF) value, or a combination thereof. In some examples, a first apparatus provides an indication of a change associated with at least one of the AID, the PN, the SN, the TID, the TSF value, or a combination thereof to a second apparatus.

Communication security based on parameter change

Growing community of inventors

San Diego, CA, United States of America

George Cherian