公开(公告)号：US11665574B2

公开(公告)日：2023-05-30

申请号：US17078890

申请日：2020-10-23

Applicant: QUALCOMM Incorporated

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

IPC: H04W28/06 ,  H04W28/02

CPC classification number: H04W28/0231 ,  H04W28/06

Abstract: This disclosure provides methods, devices and systems for generating packet preambles. Some implementations more specifically relate to preamble designs for special cases such as, for example, full-bandwidth multi-user multiple-input multiple-output (MU-MIMO), single-user (SU) preamble puncturing, hybrid automatic repeat request (HARQ), and multi-AP coordination. Multi-AP coordination may refer to coordinated beamforming (CoBF), joint transmission (JT), or coordinated orthogonal frequency division multiple access (C-OFDMA). Additionally, or alternatively, some implementations more specifically relate to preamble designs that accommodate signal fields of different cases.

公开(公告)号：US11564250B2

公开(公告)日：2023-01-24

申请号：US16988631

申请日：2020-08-08

Applicant: QUALCOMM Incorporated

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

IPC: H04W74/00 ,  H04L5/00 ,  H04W72/04 ,  H04L69/18 ,  H04L69/22 ,  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：US11477745B2

公开(公告)日：2022-10-18

申请号：US17081109

申请日：2020-10-27

Applicant: QUALCOMM Incorporated

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

IPC: H04W56/00 ,  H04J3/06 ,  H04L27/26 ,  H04L5/00 ,  H04L69/28 ,  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：US11271617B2

公开(公告)日：2022-03-08

申请号：US16591420

申请日：2019-10-02

Applicant: QUALCOMM Incorporated

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

IPC: H04B7/0417 ,  H04B7/0456 ,  H04W84/12

Abstract: This disclosure provides systems, devices, apparatus and methods, including computer programs encoded on storage media, for null data packet (NDP) based implicit sounding and calibration for a wireless local area network (WLAN). An AP may perform a calibration procedure with one or more stations (STAs) that involves NDP transmissions. The AP may calibrate an effective downlink channel response to an effective uplink channel to compensate for transmit and receive chain differences. The AP may initiate implicit sounding by transmitting a downlink message that includes an uplink NDP announcement frame to the one or more STAs, prompting uplink multi-user (MU) NDP transmission. The AP may estimate the uplink channel based on measuring the received NDPs and mirror the estimated uplink channel for reciprocal downlink channel estimation and precoding generation. The AP may perform MU multiple input multiple output (MIMO) downlink transmission that is precoded based on the channel estimation.

公开(公告)号：US11057174B2

公开(公告)日：2021-07-06

申请号：US16219456

申请日：2018-12-13

Applicant: QUALCOMM Incorporated

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

IPC: H04L5/00 ,  H04W72/04 ,  H04L1/00 ,  H04W74/08 ,  H04W16/14

Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for wireless communication with partial channel puncturing. Using partial channel puncturing, a wireless local area network (WLAN) device may modulate data on a first portion of a wireless channel while refraining from modulating data on a second portion of the wireless channel. The partial channel puncturing can be used with an exclusion bandwidth zone defined for the WLAN. The exclusion bandwidth zone prevents transmissions on portions of channels so that the WLAN transmissions do not interfere with an incumbent system transmission in the exclusion bandwidth zone.

公开(公告)号：US20210167889A1

公开(公告)日：2021-06-03

申请号：US17103550

申请日：2020-11-24

Applicant: QUALCOMM Incorporated

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

IPC: H04L1/00 ,  H04W24/08

Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for link adaptation in a wireless local area network (WLAN). A link adaptation test packet from a first WLAN device to a second WLAN may include a plurality of link adaptation test portions that are generated using a corresponding plurality of transmission rate options. For example, the plurality of link adaptation test portions may be modulated using different modulation and coding scheme (MCS) options. Thus, a single test packet may be used to evaluate different transmission rate options. The second WLAN device may provide feedback information regarding the link adaptation test portions. The feedback information may be used to determine a transmission rate for a subsequent transmission from the first WLAN device to the second WLAN device based on wireless channel conditions.

公开(公告)号：US20210045151A1

公开(公告)日：2021-02-11

申请号：US16988631

申请日：2020-08-08

Applicant: QUALCOMM Incorporated

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

IPC: H04W74/00 ,  H04L5/00 ,  H04W72/04

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：US10856311B2

公开(公告)日：2020-12-01

申请号：US16275315

申请日：2019-02-13

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/12 ,  H04W72/04 ,  H04L5/00

Abstract: Methods and apparatuses are disclosed for communicating over a wireless communication network. In one aspect, an apparatus can include a memory that stores instructions, a processor, and a segment parser. The memory can be configured to store instructions. The processing system is configured to execute the instructions to generate a message according to a tone plan for transmission to one or more destination devices within one of a 240 or 320 MHz total channel bandwidth. The processing system is further configured to provide the message for transmission over the 240 or 320 MHz total channel bandwidth, where the message is encoded for transmission by at least one of a binary convolutional coded (BCC) interleaver or a low density parity check (LDDC) tone mapper. The segment parser is configured to segment the total channel bandwidth into a plurality of segments of equal or unequal sub-band bandwidths or number of data tones.

公开(公告)号：US20200305164A1

公开(公告)日：2020-09-24

申请号：US16803627

申请日：2020-02-27

Applicant: QUALCOMM Incorporated

Inventor： Lin Yang ,  Bin Tian ,  Sameer Vermani

IPC: H04W72/04 ,  H04W80/08 ,  H04L5/00 ,  H04L27/26 ,  H04W80/02 ,  H04L1/00

Abstract: This disclosure provides methods, devices and systems for data parsing for resource unit (RU) aggregation. A wireless communication device (such as an access point (AP) or a station (STA)) may allocate a set of RUs for a receiving device in a basic service set (BSS). The set of RUs may be associated with multiple bandwidth segments of a bandwidth allocation and may be non-contiguous or contiguous. The wireless communication device may determine a data parsing and encoding scheme for a set of information bits. The data parsing may be implemented at a medium access control (MAC) layer or physical (PHY) layer and the encoding may correspond to a joint encoding or a separate encoding for each RU of the allocation. The wireless communication device may then distribute the coded bits to the set of RUs for transmission.

公开(公告)号：US10721627B2

公开(公告)日：2020-07-21

申请号：US16052474

申请日：2018-08-01

Applicant: QUALCOMM Incorporated

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

IPC: H04W4/00 ,  H04W16/10 ,  H04B7/024 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/06 ,  H04W84/10 ,  H04W72/04

Abstract: Certain aspects relate to methods and apparatus for wireless communication. The apparatus generally includes a processing system configured to generate a first frame including an indication of unused resources in a first basic service set (BSS) available to be shared with one or more wireless nodes in one or more second BSSs. The apparatus also includes a first interface configured to output the first frame for transmission to the one or more wireless nodes.