公开(公告)号：US20220393843A1

公开(公告)日：2022-12-08

申请号：US17820042

申请日：2022-08-16

Applicant: QUALCOMM Incorporated

Inventor： Lochan VERMA ,  Bin TIAN ,  Sameer VERMANI ,  Lin YANG ,  Youhan KIM

IPC: H04L5/00 ,  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：US20220385521A1

公开(公告)日：2022-12-01

申请号：US17330238

申请日：2021-05-25

Applicant: QUALCOMM Incorporated

Inventor： Jialing Li CHEN ,  Kanke WU ,  Bin TIAN

IPC: H04L27/28 ,  H04L1/00 ,  H04L27/20

Abstract: This disclosure provides methods, devices and systems for increasing the transmit power of wireless communication devices operating on power spectral density (PSD)-limited wireless channels. Some implementations more specifically relate to tone mapping techniques and packet designs that support duplicate (or “DUP mode”) transmissions to multiple users. In some implementations, an access point (AP) may transmit a PPDU that includes first user data and second user data, where at least the first user data is transmitted in a DUP mode. As such, the first user data may be mapped to a number (N) of tones spanning a first RU in accordance with a dual carrier modulation (DCM) scheme, and a duplicate copy of the first user data may be mapped to N tones spanning a second RU in accordance with the DCM scheme. In some implementations, the second user data also may be transmitted in a DUP mode.

公开(公告)号：US20220345187A1

公开(公告)日：2022-10-27

申请号：US17238190

申请日：2021-04-22

Applicant: QUALCOMM Incorporated

Inventor： Simone MERLIN ,  Alireza RAISSINIA ,  Bin TIAN ,  Xiaoxin Zhang ,  Solomon TRAININ ,  Assaf KASHER ,  Manish MADAN ,  John GRESZCZUK

IPC: H04B7/06 ,  H04L25/02 ,  H04W74/08 ,  H04W80/02 ,  H04L5/00

Abstract: This disclosure provides methods, devices and systems for radio frequency (RF) sensing in wireless communication systems. In some implementations, a transmitter device transmits sounding sequences configured for channel estimation over a wireless channel to a receiver device. The transmitter device also transmits or receives non-sounding frames associated with a channel report of the receiver device. The transmitter device transmits a frame soliciting the channel report from the receiver device. The transmitter device receives the channel report, which may include channel state information (CSI) of the wireless channel responsive to at least the sounding sequences. Some types of channel reports may take longer to generate than other types of channel reports. Transmitting or receiving the non-sounding frames during the time period may prevent other devices from accessing the wireless channel when the receiver device needs additional time to generate a certain type of channel report.

公开(公告)号：US20210266965A1

公开(公告)日：2021-08-26

申请号：US17181987

申请日：2021-02-22

Applicant: QUALCOMM Incorporated

Inventor： Sai  Yiu Duncan HO ,  George CHERIAN ,  Abhishek Pramod PATIL ,  Alfred ASTERJADHI ,  Raja BANERJEA ,  Bin TIAN ,  Yanjun SUN

IPC: H04W74/08 ,  H04L1/16 ,  H04W56/00 ,  H04W72/08

Abstract: This disclosure provides methods, devices and systems for non-simultaneous transmit and receive (STR) station (STA) transmissions using multiple links. In one aspect, a medium synchronization delay timer associated with a second link of the non-STR STA can be initiated in response to completing transmission of the data on the first link to delay triggering of a clear channel assessment (CCA) associated with the second link. Data can be transmitted on the second link in response to expiration of the medium synchronization delay timer. In another aspect, an energy detect (ED) threshold level on a second link may be decreased from a first ED threshold level to a second ED threshold level after transmitting the data on the first link. In a further aspect, a block acknowledgment (BA) frame including a network allocation vector (NAV) synchronization of a second access point may be transmitted to the first link of the station.

公开(公告)号：US20210160713A1

公开(公告)日：2021-05-27

申请号：US17092702

申请日：2020-11-09

Applicant: QUALCOMM Incorporated

Inventor： Lin YANG ,  Bin TIAN ,  Stephen Jay SHELLHAMMER ,  Dung Ngoc DOAN ,  Sameer VERMANI ,  Jialing Li CHEN

IPC: H04W24/08 ,  H04L27/26

Abstract: This disclosure provides methods, devices and systems for link adaptation in wireless communications. Some implementations more specifically relate to transmitter-based modulation and coding scheme (MCS) selection. A transmitting device transmits a test packet, over a wireless channel, to a receiving device. The receiving device generates one or more signal-to-interference-plus-noise ratio (SINR) estimates for the wireless channel based on the received sounding packet. In some aspects, each SINR estimate may be associated with a particular modulation order. In some other aspects, each SINR estimate may be generated based on a transmitter configuration or a receiver type to be used for subsequent communications between the transmitting device and the receiving device. The receiving device transmits feedback, including the SINR estimates, to the transmitting device. The transmitting device then selects an MCS to be used for subsequent communications with the receiving device based on the SINR estimates and associated modulation orders.

公开(公告)号：US20210127291A1

公开(公告)日：2021-04-29

申请号：US17078890

申请日：2020-10-23

Applicant: QUALCOMM Incorporated

Inventor： Jialing Li CHEN ,  Sameer VERMANI ,  Bin TIAN ,  Lin YANG

IPC: H04W28/02 ,  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：US20200083983A1

公开(公告)日：2020-03-12

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

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：US20190058545A1

公开(公告)日：2019-02-21

申请号：US16058301

申请日：2018-08-08

Applicant: QUALCOMM Incorporated

Inventor： Jialing Li CHEN ,  Lin YANG ,  Bin TIAN ,  Ning ZHANG ,  Vincent Knowles JONES, IV ,  Didier Johannes Richard VAN NEE ,  Louay JALLOUL ,  Ahmad Abdulrahman MOHAMMED

IPC: H04L1/00 ,  H04W52/02

Abstract: Apparatuses and methods for correcting a distorted signal at a receiver device during wireless local area network (WLAN) communications are disclosed. The apparatuses and methods include receiving, by a receiver device in a WLAN, a distorted signal corresponding to a data packet signal transmitted from a transmitter device, receiving, by the receiver device, one or more transmitter parameters corresponding to the transmission of the data packet signal, the one or more transmitter parameters including information to adjust the distorted signal, and adjusting, by the receiver device, the distorted signal to reconstruct the data packet signal based at least on the one or more transmitter parameters.

公开(公告)号：US20190014555A1

公开(公告)日：2019-01-10

申请号：US16028332

申请日：2018-07-05

Applicant: QUALCOMM Incorporated

Inventor： Sameer VERMANI ,  Bin TIAN ,  Yan ZHOU ,  George CHERIAN ,  Abhishek Pramod PATIL ,  Alfred ASTERJADHI

IPC: H04W72/04 ,  H04B7/0452

Abstract: Certain aspects of the present disclosure are directed to an apparatus for wireless communication. The apparatus generally including a processing system configured to generate a first frame including an indication of whether resources are available to be shared with a first one or more wireless nodes, where the apparatus is part of a first basic service set and the first one or more wireless nodes are part of one or more second basic service sets, and a first interface configured to output the first frame for transmission.

公开(公告)号：US20180014216A1

公开(公告)日：2018-01-11

申请号：US15645727

申请日：2017-07-10

Applicant: QUALCOMM Incorporated

Inventor： Raja BANERJEA ,  Bin TIAN ,  Sameer VERMANI

IPC: H04W24/08 ,  H04W56/00 ,  H04W84/12

CPC classification number: H04W24/08 ,  H04L25/0224 ,  H04L27/2602 ,  H04L27/2657 ,  H04L27/2662 ,  H04L27/2675 ,  H04W56/0035 ,  H04W84/12 ,  Y02D70/10 ,  Y02D70/14 ,  Y02D70/142

Abstract: A method, an apparatus, and a computer-readable medium for wireless communication are provided. In certain aspects, the apparatus may be configured to receive a signal that comprises a first training field and an identifier associated with a wireless device in a preamble of the signal. In certain other aspects, the apparatus may be configured to estimate one or more of a frequency offset of the signal or a timing offset of the signal based at least in part on the first training field and the identifier associated with the wireless device. In certain other aspect, the apparatus may be configured to perform packet detection based at least in part on the first training field and the identifier associated with the wireless device.