公开(公告)号：US11924812B2

公开(公告)日：2024-03-05

申请号：US17382585

申请日：2021-07-22

Applicant: QUALCOMM Incorporated

Inventor： Stephen Jay Shellhammer ,  Sameer Vermani ,  Jialing Li Chen ,  Bin Tian ,  Alfred Asterjadhi ,  Yanjun Sun

IPC: H04W72/044 ,  H04L69/22 ,  H04W72/51 ,  H04W84/12

CPC classification number: H04W72/044 ,  H04L69/22 ,  H04W72/51 ,  H04W84/12

Abstract: This disclosure provides methods, devices and systems for generating enhanced trigger frames. Some implementations more specifically relate to trigger frame designs that support gains in data throughput achievable in accordance with the IEEE 802.11be amendment, and future generations, of the IEEE 802.11 standard. In some implementations, an enhanced trigger frame may be used to solicit a non-legacy trigger-based (TB) physical layer protocol convergence protocol (PLCP) protocol data unit (PPDU) from one or more wireless stations (STAs). In some implementations, the enhanced trigger frame may be configurable to support multiple versions of the IEEE 802.11 standard. For example, an enhanced trigger frame may be configured in accordance with a legacy trigger frame format or a non-legacy trigger frame format. Thus, when configured in accordance with the legacy trigger frame format, the enhanced trigger frame can also be used to a legacy TB PPDU from one or more STAs.

公开(公告)号：US20240056996A1

公开(公告)日：2024-02-15

申请号：US18492594

申请日：2023-10-23

Applicant: QUALCOMM Incorporated

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

IPC: H04W56/00 ,  H04J3/06 ,  H04L27/26 ,  H04L5/00 ,  H04L69/28

CPC classification number: H04W56/001 ,  H04J3/067 ,  H04L27/2605 ,  H04L5/0044 ,  H04L69/28 ,  H04L27/2602 ,  H04L27/2613 ,  H04W88/08

Abstract: This disclosure provides systems, methods, apparatus, including computer programs encoded on computer storage media for orthogonal multiplexing of high efficiency (HE) and extremely high throughput (EHT) wireless traffic. Devices in a wireless local area network (WLAN) may operate under HE or EHT conditions. An access point (AP) may support both HE and EHT communications with WLAN devices. To enable substantially simultaneous downlink HE and EHT transmissions and substantially simultaneous uplink HE and EHT transmissions, the AP may support orthogonal frequency-division multiple access (OFDMA) of HE and EHT transmissions. For example, pre-HE and pre-EHT modulated fields, HE and EHT modulated fields, and payloads may be aligned in time for the HE and EHT transmissions. The AP may ensure orthogonality for multiplexing the HE and EHT transmissions based on the alignment. In some implementations, a trigger frame may be utilized to indicate uplink transmission alignments.

公开(公告)号：US11818061B2

公开(公告)日：2023-11-14

申请号：US16589041

申请日：2019-09-30

Applicant: QUALCOMM Incorporated

Inventor： George Cherian ,  Alfred Asterjadhi ,  Abhishek Pramod Patil ,  Bin Tian ,  Sameer Vermani

IPC: H04L5/00 ,  H04B17/318 ,  H04W52/40 ,  H04W72/27 ,  H04W72/541 ,  H04W84/12

CPC classification number: H04L5/0032 ,  H04B17/318 ,  H04W52/40 ,  H04W72/27 ,  H04W72/541 ,  H04W84/12

Abstract: This disclosure provides systems, devices, apparatus, and methods, including computer programs encoded on storage media, for preventing or reducing cross-network interference associated with a coordinated transmission on a wireless channel. A first access point (AP) of a first basic service set (BSS) and a second AP of a second BSS can concurrently use the wireless channel using a coordinated transmission during a portion of a transmission opportunity (TXOP). The TXOP owner (such as the first AP) may allocate a resource assignment to the second AP such that the resource assignment is conditionally available for use by the second AP in a coordinated transmission. The condition may prevent the resource assignment from being used by the second BSS when its use would cause interference to the first BSS. The condition may be based on a transmit power for downlink communication or uplink communication in the second BSS.

公开(公告)号：US20230180160A1

公开(公告)日：2023-06-08

申请号：US18062839

申请日：2022-12-07

Applicant: QUALCOMM Incorporated

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

IPC: H04W56/00

CPC classification number: H04W56/0015 ,  H04W92/20

Abstract: This disclosure provides systems, methods, apparatus, and computer programs encoded on computer storage media, for relative timing drift correction for distributed multi-user transmissions. In one aspect, a first access point (AP) may receive a first signal from a second AP. The first signal may be associated with a channel sounding procedure to be performed substantially simultaneously by the second AP and the first AP. The first AP may then receive a second signal from the second AP, and prior to a substantially simultaneous transmission by the second AP and the first AP. The second signal may include timing information relative to the first signal. The first AP may determine a start time of the substantially simultaneous transmission at the first AP based on the timing information, and may initiate the substantially simultaneous transmission according to the determined start time.

公开(公告)号：US20230156781A1

公开(公告)日：2023-05-18

申请号：US18149123

申请日：2023-01-02

Applicant: QUALCOMM Incorporated

Inventor： Jialing Li Chen ,  Sameer Vermani ,  Lin Yang ,  Bin Tian ,  Vincent Knowles Jones, IV ,  Youhan Kim

IPC: H04W74/00 ,  H04L5/00 ,  H04W72/0453 ,  H04W72/0446 ,  H04L69/18 ,  H04L69/22 ,  H04W72/21 ,  H04W72/23

CPC classification number: H04W74/004 ,  H04L5/0053 ,  H04W72/0453 ,  H04W72/0446 ,  H04L5/0094 ,  H04L69/18 ,  H04L69/22 ,  H04W72/21 ,  H04W72/23 ,  H04W84/12

Abstract: This disclosure provides methods, devices and systems for wireless communication, and particularly, methods, devices and systems for including signaling regarding enhanced features of new wireless communication protocols. The signaling may be included in various portions of a physical layer preamble of a wireless transmission. In some implementations, the physical layer preamble may be used to indicate puncturing of subbands or content channels that may carry further signaling in accordance with preamble signaling designs of this disclosure. The physical layer preamble signaling be parallelized for different subchannels of a wireless channel that consists of multiple subchannels. Some implementations of the physical layer preambles may be used to multiplex different types of wireless local area network communications into different subsets of the plurality of subchannels of the wireless channel.

公开(公告)号：US11632277B2

公开(公告)日：2023-04-18

申请号：US17320221

申请日：2021-05-14

Applicant: QUALCOMM Incorporated

Inventor： Stephen Jay Shellhammer ,  Bin Tian ,  Sameer Vermani ,  Jialing Li Chen ,  Youhan Kim

IPC: H04L12/28 ,  H04L27/26 ,  H04W84/12

Abstract: This disclosure provides methods, devices and systems for wireless communication, and particularly, for generating or receiving a multi-generation physical layer protocol data unit (PPDU). The multi-generation PPDU may concurrently include a first generation-specific preamble based on a first generation of a wireless communication specification (such as that defined by the Institute of Electrical and Electronics Engineers (IEEE) 802.11 family of standards) and a second generation-specific preamble based on a second generation of the wireless communication specification in a same transmission. The generation-specific preambles may be generated based on bandwidth portions of a wireless channel that each generation-specific preamble will occupy in the multi-generation PPDU. One or more of the generation-specific preambles may be modified based on an aggregate bandwidth of the multi-generation PPDU. This disclosure includes several options for modifying one or more generation-specific preambles or data fields to accommodate their use in a multi-generation PPDU.

公开(公告)号：US20230007604A1

公开(公告)日：2023-01-05

申请号：US17943677

申请日：2022-09-13

Applicant: Qualcomm Incorporated

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

IPC: H04W56/00 ,  H04L69/28 ,  H04L5/00 ,  H04L27/26 ,  H04J3/06 ,  H04W88/08

Abstract: This disclosure provides systems, methods, apparatus, including computer programs encoded on computer storage media for orthogonal multiplexing of high efficiency (HE) and extremely high throughput (EHT) wireless traffic. Devices in a wireless local area network (WLAN) may operate under HE or EHT conditions. An access point (AP) may support both HE and EHT communications with WLAN devices. To enable substantially simultaneous downlink HE and EHT transmissions and substantially simultaneous uplink HE and EHT transmissions, the AP may support orthogonal frequency-division multiple access (OFDMA) of HE and EHT transmissions. For example, pre-HE and pre-EHT modulated fields, HE and EHT modulated fields, and payloads may be aligned in time for the HE and EHT transmissions. The AP may ensure orthogonality for multiplexing the HE and EHT transmissions based on the alignment. In some implementations, a trigger frame may be utilized to indicate uplink transmission alignments.

公开(公告)号：US20220385437A1

公开(公告)日：2022-12-01

申请号：US17330393

申请日：2021-05-25

Applicant: QUALCOMM Incorporated

Inventor： Stephen Jay Shellhammer ,  Bin Tian ,  Jialing Li Chen ,  Sameer Vermani ,  Kanke Wu ,  Youhan Kim

IPC: H04L5/00 ,  H04L1/00

Abstract: This disclosure provides methods, devices and systems for wireless communications over a 320 MHz bandwidth. Some implementations more specifically relate to signaling techniques for indicating the bandwidth of a physical layer convergence protocol (PLCP) protocol data unit (PPDU) transmitted in a secondary 160 MHz channel of the 320 MHz bandwidth. In some implementations, an access point (AP) may transmit an aggregated PPDU (A-PPDU) that includes a first sub-PPDU transmitted within a primary 160 MHz channel and a second sub-PPDU transmitted within a secondary 160 MHz channel. In such implementations, the first sub-PPDU may carry bandwidth information indicating the bandwidth of the first sub-PPDU within the primary 160 MHz channel and the second sub-PPDU may carry bandwidth information indicating the 320 MHz bandwidth.

公开(公告)号：US11452098B2

公开(公告)日：2022-09-20

申请号：US16387261

申请日：2019-04-17

Applicant: QUALCOMM Incorporated

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

IPC: H04W4/00 ,  H04W72/04

Abstract: An access point (AP) may signal management frames that include two operation information fields indicating two channel widths for different classes of wireless stations (STAs). STAs may identify one of the two operation information fields based on capabilities of the STA (e.g., whether or not the STA is capable of dual band channel bonding, resource unit or physical channel puncturing, etc.). In some cases, one operation information field may indicate a channel width within a first and second frequency band (e.g., within the 5 GHz band and the 6 GHz band), as well as a puncturing scheme associated with the channel width. In some cases, the operation information field may indicate a dual band channel bonding configuration, where two frequency segments associated with the channel bonding configuration are in two different frequency bands. In some cases, a tightened spectral mask may be used for such dual band channel bonding configurations.

公开(公告)号：US11362708B2

公开(公告)日：2022-06-14

申请号：US17013507

申请日：2020-09-04

Applicant: QUALCOMM Incorporated

Inventor： Sameer Vermani ,  Bin Tian ,  Stephen Jay Shellhammer ,  Youhan Kim

IPC: H04B7/0456 ,  H04W52/24 ,  H04W52/32 ,  H04B7/08 ,  H04B7/06

Abstract: This disclosure provides methods, devices and systems for wireless communication, and particularly, methods, devices and systems for implementing a joint transmission feature in a wireless communication system. Using the joint transmission feature, multiple access points (APs) may use an aggregated collection of antennas of multiple APs to simultaneously transmit a joint beamformed transmission to one or more stations (STAs). The techniques in this disclosure may prevent or reduce variations in relative gain adjustments by the APs that could otherwise negatively impact the joint transmission. In some implementations, a network device may determine a normalized gain adjustment value based on power parameters associated with each of the multiple APs. In some other implementations, each AP may determine the normalized gain adjustment value based on power parameters shared between the APs.