公开(公告)号：US20240090046A1

公开(公告)日：2024-03-14

申请号：US17940867

申请日：2022-09-08

Applicant: QUALCOMM Incorporated

Inventor： Yanjun Sun ,  George Cherian ,  Alfred Asterjadhi ,  Abhishek Pramod Patil ,  Abdel Karim Ajami ,  Sai Yiu Duncan Ho ,  Gaurang Naik ,  Maarten Menzo Wentink

IPC: H04W74/08 ,  H04W72/12

CPC classification number: H04W74/085 ,  H04W72/1263

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for wireless communication, including coordinated time domain multiple access (C-TDMA) among access points (APs) with different channels. In one aspect, while using C-TDMA, a first AP may receive a control message with scheduling information for a transmission opportunity (TXOP) from a second AP, which is the TXOP owner. The second AP may operate in a certain bandwidth, and first AP may operate in an overlapping portion of the same bandwidth, and also a different portion of bandwidth. The scheduling information may indicate a portion of the TXOP for the first AP to use during the TXOP. During the portion of the TXOP for the first AP, the first AP may perform a clear channel assessment (CCA) for the overlapping and non-overlapping portions, and transmit on both the overlapping and different bandwidths during the TXOP.

公开(公告)号：US20240008114A1

公开(公告)日：2024-01-04

申请号：US17855740

申请日：2022-06-30

Applicant: QUALCOMM Incorporated

Inventor： Abhishek Pramod Patil ,  George Cherian ,  Alfred Asterjadhi ,  Gaurang Naik ,  Sai Yiu Duncan Ho ,  Yanjun Sun ,  Abdel Karim Ajami

IPC: H04W76/15 ,  H04W8/00 ,  H04W76/14

CPC classification number: H04W76/15 ,  H04W8/005 ,  H04W76/14 ,  H04W84/12

Abstract: 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.

公开(公告)号：US11856536B2

公开(公告)日：2023-12-26

申请号：US17814470

申请日：2022-07-22

Applicant: QUALCOMM Incorporated

Inventor： Abhishek Pramod Patil ,  Yongchun Xiao ,  Ravi Gidvani ,  Sandip HomChaudhuri ,  Pradeep Kumar Yenganti ,  Arul Davidson Emmanuel ,  James Simon Cho ,  Padmanabhan Venkataraman Karthic ,  George Cherian ,  Alfred Asterjadhi ,  Jouni Kalevi Malinen

IPC: H04W56/00 ,  H04W84/12 ,  H04L5/00

CPC classification number: H04W56/0005 ,  H04L5/0096 ,  H04W56/0015 ,  H04W84/12

Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for analyzing management frames for multiple basic service sets (BSSs). In one aspect, a wireless node may obtain a first management frame from a wireless local area network (WLAN) apparatus, the WLAN apparatus operating multiple virtual access points (VAPs) respectively corresponding to multiple BSSs. The wireless node may determine whether the first management frame includes a BSS profile of a BSS associated with the wireless node based, at least in part, on an arrangement of a plurality of BSS profiles within one or more management frames. The wireless node may determine to further process the first management frame based, at least in part, on a determination that the first management frame includes the BSS profile of the BSS associated with the wireless node.

公开(公告)号：US11844106B2

公开(公告)日：2023-12-12

申请号：US17482417

申请日：2021-09-22

Applicant: QUALCOMM Incorporated

Inventor： Abdel Karim Ajami ,  Sai Yiu Duncan Ho ,  George Cherian ,  Alfred Asterjadhi ,  Abhishek Pramod Patil ,  Yanjun Sun ,  Gaurang Naik

IPC: H04W74/08

CPC classification number: H04W74/0808

Abstract: This disclosure provides systems, methods, and apparatus for managing data traffic in restricted target wake time (TWT) service periods (SPs). In some aspects, an access point (AP) receives a request frame from a wireless station (STA) associated with a client device via a peer-to-peer (P2P) link, the request frame indicating that the STA intends to exchange P2P communications with the client device during a r-TWT SP scheduled on a wireless medium. The AP obtains a transmission opportunity (TXOP) on the wireless medium during the r-TWT SP, the request frame identifying the client device. The AP transmits a trigger frame on the wireless medium responsive to obtaining the TXOP, the trigger frame allocating a portion of the obtained TXOP for P2P communications between the STA and the client device, wherein at least one of the response frame or the trigger frame indicates a Network Allocation Vector (NAV) exception for the client device.

公开(公告)号：US11812472B2

公开(公告)日：2023-11-07

申请号：US17061120

申请日：2020-10-01

Applicant: QUALCOMM Incorporated

Inventor： Abhishek Pramod Patil ,  Alfred Asterjadhi ,  George Cherian ,  Guido Robert Frederiks

IPC: H04W4/00 ,  H04W74/08 ,  H04W74/00 ,  H04W84/12 ,  H04B17/318 ,  H04W74/02 ,  H04W48/12

CPC classification number: H04W74/0833 ,  H04W74/006 ,  H04W74/0825 ,  H04B17/318 ,  H04W48/12 ,  H04W74/02 ,  H04W84/12

Abstract: Disclosed are methods and systems for wireless communication. In one aspect, a method includes generating, by an access point, a frame, the frame assigning first resource units to first devices participating in a multi-user transmission with the access point during a transmission opportunity, and further indicating second resource units available during the transmission opportunity for transmissions to other devices, transmitting the frame; and receiving the multi-user transmission from the first devices according to the resource unit assignments.

公开(公告)号：US11765779B2

公开(公告)日：2023-09-19

申请号：US17033168

申请日：2020-09-25

Applicant: QUALCOMM Incorporated

Inventor： Sai Yiu Duncan Ho ,  George Cherian ,  Abhishek Pramod Patil ,  Jouni Kalevi Malinen ,  Soo Bum Lee

IPC: H04L12/801 ,  H04W12/00 ,  H04W12/04 ,  H04W72/04 ,  H04W76/11 ,  H04W76/15 ,  H04W80/02 ,  H04W84/12 ,  H04L47/34 ,  H04W72/0446 ,  H04W12/033

CPC classification number: H04W76/15 ,  H04L47/34 ,  H04W12/033 ,  H04W12/04 ,  H04W72/0446 ,  H04W76/11 ,  H04W80/02 ,  H04W84/12

Abstract: This disclosure provides methods, devices and systems related multi-link wireless communication. A method may include establishing, between the first WLAN device and a second WLAN device, a multi-link association that enables a first wireless communication link and a second wireless communication link. The method may include determining a temporal key for the multi-link association. The method may include encrypting a first and second media access control (MAC) protocol data unit (MPDU) based on the temporal key. The method may include preparing a first frame including the encrypted first MPDU and a second frame including the encrypted second MPDU. The method may include assigning packet numbers from a set of sequential packet numbers to the first and second frames. The method may include transmitting the first frame over the first wireless communication link and the second frame over the second wireless communication link.

公开(公告)号：US20230269805A1

公开(公告)日：2023-08-24

申请号：US18145777

申请日：2022-12-22

Applicant: QUALCOMM Incorporated

Inventor： Abhishek Pramod Patil ,  George Cherian ,  Alfred Asterjadhi ,  Lochan Verma

IPC: H04W76/15 ,  H04L1/1607 ,  H04W80/02 ,  H04W74/08 ,  H04L5/00

CPC classification number: H04W76/15 ,  H04L1/1621 ,  H04W80/02 ,  H04W74/0808 ,  H04L5/0055

Abstract: Methods, systems, and devices for wireless communications are described. Generally, the described techniques provide for improved handling of adjacent channel interference in multi-link aggregation scenarios. In accordance with the described techniques, a device may establish a set of wireless links for communication with a second device, the set of wireless links supporting parallel transmission during at least a first duration of a multi-link session, the set of wireless links including at least a first wireless link and a second wireless link. The device may modify a transmission parameter for the first wireless link or a clear channel assessment (CCA) parameter for the second wireless link, or a combination thereof. The device may then perform the CCA procedure on the second wireless link and transmit at least a first portion of the message on the first wireless link based on the modified transmission parameter or modified CCA parameter.

公开(公告)号：US11683767B2

公开(公告)日：2023-06-20

申请号：US17219356

申请日：2021-03-31

Applicant: QUALCOMM Incorporated

Inventor： Maarten Menzo Wentink ,  George Cherian

IPC: H04W56/00 ,  H04W74/08

CPC classification number: H04W56/001 ,  H04W74/0808

Abstract: This disclosure provides methods, devices and systems for synchronizing an end of an exchange of frames during a transmission opportunity (TXOP) with a target synchronization time using a synchronization short inter-frame space (SynSIFS) before a transmission by a wireless communication device that controls the medium. The wireless communication device obtains control of the medium for the TXOP by completing a CCA procedure. An exchange of frames during the TXOP includes transmissions from the wireless communication device and responses from other devices while the wireless communication device controls the medium. A duration of the SynSIFS may be adjustable at a microsecond granularity. Accordingly, the wireless communication device may select a duration of the SynSIFS that allows alignment of the end of the exchange with the target synchronization time. The wireless communication device also may adjust a number of symbols in the transmission from the wireless communication device.

公开(公告)号：US20230140312A1

公开(公告)日：2023-05-04

申请号：US17516375

申请日：2021-11-01

Applicant: QUALCOMM Incorporated

Inventor： Abdel Karim Ajami ,  Sai Yiu Duncan Ho ,  George Cherian ,  Alfred Asterjadhi ,  Abhishek Pramod Patil ,  Yanjun Sun ,  Gaurang Naik

IPC: H04W74/04 ,  H04W74/08 ,  H04W72/04

Abstract: This disclosure provides methods, devices and systems for protecting latency-sensitive communications during restricted target wake time (r-TWT) service periods (SPs). Some implementations more specifically relate to coordinated scheduling of r-TWT SPs between OBSSs. In some aspects, a first AP may coordinate with a second AP in scheduling r-TWT SPs so that latency-sensitive traffic in a first BSS does not interfere or collide with latency-sensitive traffic in a second BSS overlapping the first BSS. In some implementations, the first and second APs may schedule their respective r-TWT SPs to be orthogonal in time. In some other implementations, the first and second APs may schedule their r-TWT SPs to overlap in time, while allocating coordinated resources to concurrent or overlapping latency-sensitive traffic in the first and second BSSs (such as in accordance with one or more multi-AP coordination techniques).

公开(公告)号：US11638280B2

公开(公告)日：2023-04-25

申请号：US16514878

申请日：2019-07-17

Applicant: QUALCOMM Incorporated

Inventor： Alfred Asterjadhi ,  Abhishek Pramod Patil ,  Lochan Verma ,  George Cherian

IPC: H04W72/12 ,  H04W72/1268 ,  H04W28/02 ,  H04W72/0446 ,  H04W84/12

Abstract: This disclosure provides systems, devices, apparatus and methods, including computer programs encoded on storage media, for managing uplink access in a wireless local area network. A station (STA) may inform an access point (AP) of uplink quality of service (QoS) parameters for a traffic flow from the STA. The AP may control uplink resources to satisfy the QoS parameters. For example, the AP may select from among different access modes (including a single user (SU) access mode, an uplink multi-user (UL-MU) scheduled access mode, a multi-user enhanced distributed controlled access (MU EDCA) access mode, or a low latency (LL) access mode). The AP may cause the STA to use a SU access mode or the LL access mode if the UL-MU scheduled access mode and the MU EDCA access mode are not sufficient to satisfy the uplink QoS parameters for the traffic flow.