公开(公告)号：US11903017B2

公开(公告)日：2024-02-13

申请号：US17191234

申请日：2021-03-03

Applicant: QUALCOMM Incorporated

Inventor： Xiaolong Huang ,  Srinivas Katar ,  Andrew MacKinnon Davidson ,  Sandip Homchaudhuri ,  Qi Xue ,  Neelakantan Nurani Krishnan ,  Simon Jan Brand

IPC: H04W72/563 ,  H04W76/15 ,  H04W40/02

CPC classification number: H04W72/563 ,  H04W40/02 ,  H04W76/15

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for low-latency communications in wireless networks. In some implementations, a wireless station (STA) may transmit a data session request to a root access point (AP) in a wireless network responsive to activating an application associated with latency restricted (LR) data traffic. In some aspects, the data session request may indicate one or more preferred channels to carry the LR data traffic. In some other aspects, the data session request may indicate one or more preferred times to exchange the LR data traffic. In some implementations, the root AP may establish an LR data path with the STA based on the preferred time or frequency resources indicated in the data session request. The LR data path may include time or frequency resources that are reserved for LR data traffic between the root AP and the STA.

公开(公告)号：US11800572B2

公开(公告)日：2023-10-24

申请号：US17188275

申请日：2021-03-01

Applicant: QUALCOMM Incorporated

Inventor： Qi Xue ,  Srinivas Katar ,  Chao Zou ,  Naveen Gangadharan ,  Neelakantan Nurani Krishnan ,  Sandip Homchaudhuri ,  Xiaolong Huang ,  Anish Ashok

IPC: H04W74/08 ,  H04W56/00 ,  G06T11/00 ,  G06T7/20 ,  G06T7/70 ,  H04L65/40 ,  H04L67/131

CPC classification number: H04W74/0891 ,  G06T7/20 ,  G06T7/70 ,  G06T11/00 ,  H04L65/40 ,  H04L67/131 ,  H04W56/001 ,  G06T2200/16 ,  G06T2207/10016

Abstract: This disclosure provides systems, methods and apparatus for synchronous channel access control of a wireless system. In some aspects, a device may use a TWT session to communicate with a second device during one or more TWT service periods. Uplink and downlink communications may be coordinated to both be in a TWT service period to allow a device to enter a low power mode outside of the TWT service period. The TWT session, including the service periods, may be configured and managed by the device or the second device to ensure the communications associated with an XR experience between the devices (such as pose data frames or tracking frames provided as uplink data and video data frames provided as downlink data) meet latency requirements or other requirements for the XR experience. Use of TWT service periods allows other devices to use the wireless medium outside of the TWT service periods.

公开(公告)号：US11696345B2

公开(公告)日：2023-07-04

申请号：US17188165

申请日：2021-03-01

Applicant: QUALCOMM Incorporated

Inventor： Qi Xue ,  Srinivas Katar ,  Chao Zou ,  Naveen Gangadharan ,  Neelakantan Nurani Krishnan ,  Sandip Homchaudhuri ,  Xiaolong Huang ,  Anish Ashok

IPC: H04W74/08

CPC classification number: H04W74/0883 ,  H04W74/0816

Abstract: This disclosure provides systems, methods and apparatus for asynchronous channel access control of a wireless system. In some aspects, a device may adjust the priority of one or more PPDUs and may perform other operations to ensure control of a wireless medium at certain times while still allowing for other devices to communicate on the wireless medium. For example, the device may adjust a backoff counter or one or more EDCA parameters to ensure obtaining control of the wireless medium to transmit a first PPDU of an application file. For one or more subsequent PPDUs of the application file, the device may again adjust a backoff counter or one or more EDCA parameters to allow other devices to obtain control of the wireless medium in certain scenarios (such as a second device to provide information back to the device or to otherwise transmit using the shared wireless medium).

公开(公告)号：US20220264666A1

公开(公告)日：2022-08-18

申请号：US17589536

申请日：2022-01-31

Applicant: QUALCOMM Incorporated

Inventor： Syam Krishna Babbellapati ,  Sitaramanjaneyulu Kanamarlapudi ,  Xiaolong Huang

IPC: H04W76/11 ,  H04L12/18 ,  H04W28/02 ,  H04W48/16

Abstract: This disclosure provides methods, devices and systems for transmitting, to one or more local area network clients of the device, a multicast message indicating an available network slice, receiving, from a first local area network client of the one or more local area network clients based on the multicast message, a request to access the available network slice, establishing, at the device based on receiving the request, a connection associated with the available network slice, and transmitting, to the first local area network client based on establishing the connection, a confirmation to access the available network slice.

公开(公告)号：US11019603B2

公开(公告)日：2021-05-25

申请号：US15960297

申请日：2018-04-23

Applicant: QUALCOMM Incorporated

Inventor： Ajay Kumar Pathak ,  Srinivas Katar ,  Xiaolong Huang ,  Kapil Rai

IPC: H04W72/02 ,  H04W16/10 ,  H04W24/02 ,  H04W16/02 ,  H04W16/20 ,  H04W16/14 ,  H04W84/12 ,  H04W72/08

Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for communicating channel selection constraints in a network having multiple access points (APs). In one aspect, a root AP may assist with channel selection (assignment) for the multiple APs. A first AP can provide channel operating constraints to the root AP to indicate one or more operating constraints for a particular channel that may be used by the first AP. The operating constraints may be based, at least in part, on a hardware characteristic of the first AP. For example, an operating constraint may indicate a minimum channel separation or a maximum transmit power to consider when the particular channel is used concurrently with another channel. In another aspect, the first AP can communicate a channel selection error and error code when a particular channel cannot be used due to an operating constraint.

公开(公告)号：US20210127307A1

公开(公告)日：2021-04-29

申请号：US17079247

申请日：2020-10-23

Applicant: QUALCOMM Incorporated

Inventor： Xiaolong Huang ,  Srinivas Katar ,  Bharat Bhushan

IPC: H04W28/24 ,  H04W74/08

Abstract: This disclosure provides methods, devices and systems for controlling basic service set (BSS) configuration of an access point (AP) in a multi-AP network. The multi-AP network may include a first AP that manages a first basic service set (BSS) and a second AP that manages a second BSS. The first BSS and the second BSS may share one or more wireless channels or may have overlapping coverage areas. A multi-AP controller may determine a BSS configuration policy (such as a maximum transmission opportunity (TXOP) duration) for the second BSS based on a type of traffic in the first BSS. This disclosure includes techniques for sharing traffic characteristics, determining the BSS configuration policy, communicating the BSS configuration policy, and controlling the BSS configuration policies for multiple BSSs so that one of the BSSs can provide a quality of service (QoS) for one or more stations (STAs).

公开(公告)号：US20190306790A1

公开(公告)日：2019-10-03

申请号：US15938784

申请日：2018-03-28

Applicant: QUALCOMM Incorporated

Inventor： Sanoop Kottontavida ,  Xiaolong Huang ,  Yongchun Xiao ,  Naveen Gangadharan ,  Srinivas Katar ,  Sandip Homchaudhuri ,  James Simon Cho

IPC: H04W52/02 ,  H04W28/02 ,  H04W76/28 ,  H04W72/12

Abstract: Various aspects of the disclosure provide for Target Wake Time (TWT) slot scheduling in a communication network. The various aspects includes determining a number of stations in the basic service set (BSS) of an access point (AP) exceeding a minimum number of stations, determining whether to establish TWT slot scheduling for at least one or more of the stations based on one or more operational condition of the communication network, and establishing a TWT slot scheduling of the one or more of the stations if the one or more operational condition of the communication network, individually or collectively, satisfy a threshold.

公开(公告)号：US20190230674A1

公开(公告)日：2019-07-25

申请号：US15875878

申请日：2018-01-19

Applicant: Qualcomm Incorporated

Inventor： Chao Cheng ,  Xiaolong Huang ,  Raja Banerjea ,  Ning Zhang

IPC: H04W72/08 ,  H04W72/04 ,  H04L5/00

Abstract: This disclosure provides systems, devices, apparatus and methods, including computer programs encoded on storage media, for the scheduling of wireless resources to multiple wireless stations participating in a simultaneous transmission. Some implementations more specifically relate to the allocation of resource units (RUs) to stations for an uplink multi-user OFDMA (UL MU-OFDMA) transmission. In some implementations, an access point (AP) may adjust a modulation and coding scheme (MCS) of one of the stations based on the results of a power imbalance check. For example, in response to determining that a station failed the power imbalance check, the AP may reduce the MCS assigned to the station from a current value to a reduced value as opposed to simply dropping the station from the scheduled transmission. In some implementations, the AP then performs another power imbalance check based on the reduced MCS. The process may be repeated in an effort to provide all of the grouped stations the opportunity to successfully participate in the UL MU-OFDMA transmission.

公开(公告)号：US20180295573A1

公开(公告)日：2018-10-11

申请号：US15481106

申请日：2017-04-06

Applicant: QUALCOMM Incorporated

Inventor： Ravi Gidvani ,  Sandip HomChaudhuri ,  Zhanfeng Jia ,  BadriSrinivasan Sampathkumar ,  Alireza Raissinia ,  Srinivas Katar ,  Madhan Jaganathan ,  Xiaolong Huang

IPC: H04W52/02 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communication are described. An access point (AP) may communicate with a plurality of stations in a basic service set (BSS) according to a target wakeup time (TWT) slot duration. The AP may identify one or more congestion or interference factors for the BSS. In some cases, the AP may identify a congestion score based at least in part on at least one of the one or more congestion factors from one or more stations that can be part of its own BSS, and an interference score based at least in part on at least one of the one or more interference factors form one or more stations that are not part of AP's BSS. In some cases, the AP may modify the TWT slot duration based at least in part on the congestion score and the interference score.

公开(公告)号：US20180242344A1

公开(公告)日：2018-08-23

申请号：US15932209

申请日：2018-02-16

Applicant: QUALCOMM Incorporated

Inventor： Xiaolong Huang ,  Madhan Jaganathan ,  Nathaniel David Houghton ,  Madhavan Nair ,  Srinivas Katar ,  Ahmed Ragab Elsherif

IPC: H04W72/12 ,  H04W72/04

CPC classification number: H04W72/1257 ,  H04W72/04 ,  H04W72/1252 ,  H04W84/12

Abstract: A method, an apparatus, and a computer-readable medium for wireless communication are provided. In one aspect, an apparatus may be configured to determine a scheduling metric for each respective station of a plurality of stations. The scheduling metric for each station may be based on an effective spatial-time-frequency physical layer (PHY) capability for the station and a consumption rate of spatial-time-frequency resources by the respective station. The effective spatial-time-frequency PHY capability for the station may be a product of a target percentage of spatial-time resources allocated to the station, an effective number of spatial streams supported by the respective station, and a maximum bandwidth. The consumption rate of spatial-time-frequency resources may be a transmit opportunity (TXOP) moving average of consumption rate by the station. The apparatus may be configured to schedule each station of the plurality of stations for communication based on the determined scheduling metric for each respective station.