公开(公告)号：US11497074B2

公开(公告)日：2022-11-08

申请号：US17142196

申请日：2021-01-05

Applicant: QUALCOMM Incorporated

Inventor： Abhishek Pramod Patil ,  Sai Yiu Duncan Ho ,  George Cherian ,  Alfred Asterjadhi ,  Lochan Verma

IPC: H04W76/15 ,  H04L1/18 ,  H04L1/16 ,  H04W80/02

Abstract: One innovative aspect of the subject matter described in this disclosure may be implemented in a method for wireless communication. The method may be performed, for example, by a first multi-link device (MLD), that includes a first station (STA) and a second STA, to generate and provide block acknowledgment (BA) status reports for Medium Access Control (MAC) Protocol Data Units (MPDUs) transmitted by the first STA of the first MLD and the second STA of the first MLD. Another innovative aspect of the subject matter described in this disclosure may be implemented in a method for wireless communication. The method may be performed, for example, by a logical entity of a first MLD to receive and process a BA status report.

公开(公告)号：US11477730B2

公开(公告)日：2022-10-18

申请号：US17080661

申请日：2020-10-26

Applicant: QUALCOMM Incorporated

Inventor： Lochan Verma ,  George Cherian ,  Maarten Menzo Wentink

IPC: H04W48/20 ,  H04W52/36 ,  H04W72/04 ,  H04W74/08

Abstract: This disclosure provides methods, devices and systems for sharing resources of a wireless medium. Various implementations relate generally to coordinated transmit power control for sharing time and frequency resources of a wireless medium. Particular implementations relate more specifically to coordinated access point spatial-reuse-multiple-access techniques for sharing the time and frequency resources of a transmission opportunity. According to such techniques, an access point that wins contention and gains access to the wireless medium for the duration of a transmission opportunity may limit the transmit powers of the access points selected to share the time and frequency resources such that interference from the selected access points does not prevent stations associated with the winning access point from successfully decoding packets transmitted by it.

公开(公告)号：US11445431B2

公开(公告)日：2022-09-13

申请号：US16926644

申请日：2020-07-10

Applicant: QUALCOMM Incorporated

Inventor： Abhishek Pramod Patil ,  George Cherian ,  Alfred Asterjadhi ,  Sai Yiu Duncan Ho ,  Lochan Verma ,  Yanjun Sun

IPC: H04W48/08 ,  H04W76/11 ,  H04W8/24 ,  H04W48/16 ,  H04W74/08 ,  H04W72/04 ,  H04W4/23 ,  H04L1/16 ,  H04W12/73 ,  H04W76/15 ,  H04W88/10 ,  H04W80/02 ,  H04W92/10 ,  H04W88/02 ,  H04W92/02 ,  H04W84/12

Abstract: This disclosure provides systems, methods, and apparatuses for associating a wireless communication device such as a wireless station (STA) of a STA multi-link device (MLD) with an access point (AP) MLD that includes a first AP associated with a first communication link of the AP MLD and includes one or more secondary APs associated with one or more respective secondary communication links of the first AP MLD. The first AP includes one or more virtual APs, and the first AP and the one or more virtual APs of the first AP belong to a first multiple basic service set identifier (BSSID) set associated with the first communication link. The AP MLD transmits a frame including a first element carrying discovery information for the first AP and the one or more virtual APs belonging to the first multiple BSSID set, and including a second element carrying discovery information for the one or more secondary APs of the first AP MLD associated with the one or more respective secondary communication links of the first AP MLD.

公开(公告)号：US11431529B2

公开(公告)日：2022-08-30

申请号：US17077641

申请日：2020-10-22

Applicant: QUALCOMM Incorporated

Inventor： George Cherian ,  Lochan Verma ,  Alfred Asterjadhi ,  Sameer Vermani

IPC: H04B7/0452 ,  H04L25/02 ,  H04W48/16

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for group formation and sounding for distributed multi-user multiple input multiple output (MU-MIMO). Some implementations include a method of wireless communication. The method includes a sounding preparation phase that includes transmitting, to the plurality of access points, a first frame inviting the plurality of access points to perform a beamformed distributed transmission from the plurality of access points to a group of stations; receiving a second frame from at least one of the plurality of access points based on transmitting the first frame, the second frame including at least one identifier of at least one station in a different basic service set than a basic service set of the first access point; and identifying the group of stations based on the at least one identifier included in the second frame.

公开(公告)号：US11121806B2

公开(公告)日：2021-09-14

申请号：US16562907

申请日：2019-09-06

Applicant: QUALCOMM Incorporated

Inventor： Jialing Li Chen ,  Dung Ngoc Doan ,  Bin Tian ,  Lin Yang ,  Sameer Vermani ,  Lochan Verma ,  Stephen Jay Shellhammer

IPC: H04L5/00 ,  H04L1/00 ,  H04B7/0417 ,  H04L1/18 ,  H04L27/26

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for low density parity check (LDPC)-based incremental redundancy (IR) hybrid automatic repeat request (HARQ) transmission processing. In one aspect, an apparatus for wireless communications is configured to generate a first packet using a LDPC encoding process. The apparatus is further configured to generate coded bits using a second LDPC encoding process if the first packet is not successfully decoded by a wireless device, generate a second packet including at least some of the coded bits generated using the second LDPC encoding process, and output the second packet for transmission.

公开(公告)号：US11108442B1

公开(公告)日：2021-08-31

申请号：US16506936

申请日：2019-07-09

Applicant: QUALCOMM Incorporated

Inventor： Bin Tian ,  Lin Yang ,  Sameer Vermani ,  Lochan Verma

IPC: H04B7/04 ,  H04B7/0452 ,  H04L25/02 ,  H04B7/0417 ,  H04B17/12 ,  H04B7/06

Abstract: Methods, systems, and devices for wireless communication are described. A wireless device may determine that a channel is reciprocal and perform an implicit sounding process. During the implicit sounding process, the wireless device may estimate the uplink channel by measuring a first uplink multi-user multiple input multiple output (MU-MIMO) transmission. The wireless devices may then update the uplink channel estimation based by measuring a second MU-MIMO transmission that is received after a downlink transmission from the wireless device. Based on the updated uplink channel estimation, the wireless device may send a beamformed MU-MIMO transmission to a number of other wireless devices.

公开(公告)号：US20210160941A1

公开(公告)日：2021-05-27

申请号：US17100353

申请日：2020-11-20

Applicant: QUALCOMM Incorporated

Inventor： Abhishek Pramod Patil ,  Sai Yiu Duncan Ho ,  George Cherian ,  Alfred Asterjadhi ,  Lochan Verma

IPC: H04W76/15

Abstract: This disclosure provides methods, devices and systems for wireless communication, and particularly, methods, devices and systems for multi-link operation. In some aspects, a first WLAN device (such as a non-AP STA) may establish with a second WLAN device (such as an AP) a multi-link association by which the first WLAN device can simultaneously transmit information to the second WLAN device via a first wireless communication link and a second wireless communication link. The first WLAN device may coordinate contention for the first wireless communication link by a first WLAN interface of the first WLAN device to be concurrent with contention for the second wireless communication link by a second WLAN interface of the first WLAN device.

公开(公告)号：US20210014911A1

公开(公告)日：2021-01-14

申请号：US16926644

申请日：2020-07-10

Applicant: QUALCOMM Incorporated

Inventor： Abhishek Pramod Patil ,  George Cherian ,  Alfred Asterjadhi ,  Sai Yiu Duncan Ho ,  Lochan Verma ,  Yanjun Sun

IPC: H04W76/11 ,  H04W88/10 ,  H04W72/04 ,  H04W48/16 ,  H04W74/08 ,  H04W8/24

Abstract: This disclosure provides systems, methods, and apparatuses for associating a wireless communication device such as a wireless station (STA) of a STA multi-link device (MLD) with an access point (AP) MLD that includes a first AP associated with a first communication link of the AP MLD and includes one or more secondary APs associated with one or more respective secondary communication links of the first AP MLD. The first AP includes one or more virtual APs, and the first AP and the one or more virtual APs of the first AP belong to a first multiple basic service set identifier (BSSID) set associated with the first communication link. The AP MLD transmits a frame including a first element carrying discovery information for the first AP and the one or more virtual APs belonging to the first multiple BSSID set, and including a second element carrying discovery information for the one or more secondary APs of the first AP MLD associated with the one or more respective secondary communication links of the first AP MLD.

公开(公告)号：US10813049B2

公开(公告)日：2020-10-20

申请号：US15905785

申请日：2018-02-26

Applicant: QUALCOMM Incorporated

Inventor： Yanjun Sun ,  Alfred Asterjadhi ,  Bin Tian ,  George Cherian ,  Stephen Jay Shellhammer ,  Lochan Verma

IPC: H04W52/02 ,  H04W84/12 ,  H04W74/04

Abstract: A method and an apparatus for wireless communication are provided. In one configuration, an apparatus is configured to transmit a wake-up radio (WUR) signal, to determine to transmit a second signal within a SIFS after transmitting the WUR signal to increase medium reuse, and to transmit the second signal within the SIFS after transmitting the WUR signal based on the determination. The second signal may be a data, management, control, ACK, or CF-end frame to enable legacy devices that do not decode the WUR signal to avoid wasted airtime cause by EIFS after the WUR signal. In another configuration, the apparatus is configured to transmit a CTS-to-self frame, to determine to transmit a second signal within a SIFS after transmitting the CTS-to-self frame, and to transmit the second signal based on the determination. The second signal may be a WUR signal or an intermediate signal followed by a WUR signal.

公开(公告)号：US10785706B2

公开(公告)日：2020-09-22

申请号：US16159313

申请日：2018-10-12

Applicant: QUALCOMM Incorporated

Inventor： Lochan Verma ,  Bin Tian ,  Sameer Vermani ,  Lin Yang ,  Jialing Li Chen

IPC: H04W4/00 ,  H04W48/10 ,  H04W8/00 ,  H04W8/24 ,  H04W72/04 ,  H04W48/20 ,  H04W48/08 ,  H04W84/12

Abstract: Systems, devices, apparatus and methods, including computer programs encoded on storage media, are disclosed for an access point (AP) in a basic service set (BSS) to advertise or indicate 320 MHz bandwidth operation and frequency segment composition in the 320 MHz bandwidth to one or more stations (STAs) in a Wireless Local Area Network (WLAN). Also, a WLAN device may advertise or indicate its 320 MHz bandwidth support capability to other WLAN devices in the WLAN.