公开(公告)号：US20130142275A1

公开(公告)日：2013-06-06

申请号：US13690481

申请日：2012-11-30

Applicant: Qualcomm Incorporated

Inventor： Eugene J. Baik ,  Sameer Vermani ,  Lin Yang ,  Hemanth Sampath

IPC: H04L5/00

CPC classification number: H04L5/00 ,  H04B7/0413 ,  H04B7/0671

Abstract: Methods and devices for communicating in a communication system are described herein. One aspect provides a method of communicating over one or more space-time streams. The method includes transmitting a first stream with a bandwidth of 2 MHz or less. The method further includes transmitting, when there are at least two streams, a second stream with a cyclic shift delay relative to the first stream equal to half a period. The method further includes transmitting, when there are at least three streams, a third stream with a cyclic shift delay relative to one of the first and second stream equal to a quarter of the period. The method further includes transmitting, when there are at least four streams, a fourth stream with a cyclic shift delay relative to the other of the first and second stream equal to a quarter of the period.

Abstract translation: 本文描述了用于在通信系统中通信的方法和设备。 一方面提供了一种在一个或多个时空流上进行通信的方法。 该方法包括发送带宽为2MHz或更小的第一流。 该方法还包括：当存在至少两个流时，相对于第一流的循环移位延迟等于半个周期的第二流。 所述方法还包括：当存在至少三个流时，相对于所述第一和第二流中的一个等于所述周期的四分之一的循环移位延迟来发送第三流。 所述方法还包括：当存在至少四个流时，相对于所述第一和第二流中的另一个流具有循环移位延迟的第四流等于所述周期的四分之一。

公开(公告)号：US12250670B2

公开(公告)日：2025-03-11

申请号：US18423033

申请日：2024-01-25

Applicant: QUALCOMM Incorporated

Inventor： Lin Yang ,  Bin Tian ,  Dung Ngoc Doan ,  Jialing Li Chen ,  Didier Johannes Richard Van Nee

IPC: H04W72/044 ,  H04L69/323

Abstract: This disclosure provides methods, devices and systems for encoding data for wireless communication to achieve a desired amplitude distribution. Some implementations more specifically relate to performing an encoding operation to shape the amplitudes of the resultant symbols such that the amplitudes have a non-uniform distribution. In some implementations of the non-uniform distribution, the probabilities associated with the respective amplitudes generally increase with decreasing amplitude. Some implementations enable the tracking of MPDU boundaries to facilitate successful decoding by a receiving device. Additionally or alternatively, some implementations enable the determination of a packet length after performing the amplitude shaping, which enables a transmitting device to determine the number of padding bits to add to the payload and to signal the packet length to a receiving device so that the receiving device may determine the duration of the packet.

公开(公告)号：US12212413B2

公开(公告)日：2025-01-28

申请号：US18145844

申请日：2022-12-22

Applicant: QUALCOMM Incorporated

Inventor： Kanke Wu ,  Bin Tian ,  Lin Yang

IPC: H04L1/00 ,  H03M13/11

Abstract: Methods, systems, and devices for wireless communications are described. A first wireless device, such as a wireless station (STA) or a wireless access point (AP), performs a low-density parity check (LDPC) coding operation on input bits of a set of code blocks. Performing the LDPC coding operation on the input bits produces a set of codewords including one or more codewords having a first codeword length and one or more codewords having a second, shorter codeword length. The first wireless device arranges the set of codewords into a set of symbols such that a last symbol in time of the set of symbols includes the one or more codewords each having the second codeword length and no codewords having the first codeword length. The first wireless device, transmits, to a second wireless device, the plurality of symbols.

公开(公告)号：US12177803B2

公开(公告)日：2024-12-24

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 ,  H04L5/00 ,  H04L27/26 ,  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：US20240314753A1

公开(公告)日：2024-09-19

申请号：US18185251

申请日：2023-03-16

Applicant: QUALCOMM Incorporated

Inventor： Lin Yang ,  Bin Tian ,  Youhan Kim

IPC: H04W72/0453 ,  H04W56/00

CPC classification number: H04W72/0453 ,  H04W56/001 ,  H04L5/0007

Abstract: Methods, systems, and devices for wireless communications are described. A wireless station (STA) (for example, an access point (AP) or a non-AP STA) may transmit a message to one or more STAs in a multiple basic service set (BSS) system that indicates one or more distributed resource units (RUs) for the STAs to use for communications, in which each distributed RU includes a respective set of tones interspersed within a channel bandwidth such that tones of different BSSs are interleaved. For example, a coordinating STA may indicate respective distributed RUs assigned to each BSS, and may communicate with the STAs using tones of the distributed RUs for the BSS supported by the coordinating STA. In some other examples, a STA may indicate occupied distributed RUs and a permission condition to another STA, such that the other STA may use unoccupied distributed RUs for communications in accordance with the permission condition.

公开(公告)号：US20240088958A1

公开(公告)日：2024-03-14

申请号：US17942006

申请日：2022-09-09

Applicant: QUALCOMM Incorporated

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

IPC: H04B7/06 ,  H04W24/02

CPC classification number: H04B7/0617 ,  H04B7/0695 ,  H04W24/02 ,  H04W28/0278

Abstract: Methods, systems, and devices for wireless communications are described. A first wireless device (e.g., station (STA), access point (AP)) may transmit to a second wireless device during a service period, an initiating frame using a transmit beam that is based on a first beam training procedure performed between the devices prior to the service period. The first wireless device may perform a second beam training procedure during the service period based on an absence of a response frame from the second wireless device, based on an indication within the response frame received from the second wireless device, or based on identification of a change in a wireless channel relative to a previous beam training interval or previous service period. The first wireless device may then communicate one or more messages with the second wireless device using one or more beams that are based on the second beam training procedure.

公开(公告)号：US11888770B2

公开(公告)日：2024-01-30

申请号：US17196557

申请日：2021-03-09

Applicant: QUALCOMM Incorporated

Inventor： Lin Yang ,  Bin Tian

IPC: H04L5/00 ,  H04W72/0453

CPC classification number: H04L5/0044 ,  H04W72/0453 ,  H04L5/0007

Abstract: This disclosure provides systems, methods, and apparatuses for wireless communication. An example apparatus selects a first resource unit (RU) of a plurality of RUs for transmitting a physical (PHY) layer convergence protocol (PLCP) protocol data unit (PPDU) over a wireless medium. The first RU may include a set of contiguous tones occupying a first frequency bandwidth. The plurality of RUs may collectively span a second frequency bandwidth greater than the first frequency bandwidth. The apparatus maps the set of contiguous tones of the first RU to a set of non-contiguous tones distributed across the second frequency bandwidth using a tone mapping vector and a tone mapping offset associated with the first RU. The apparatus transmits the PPDU over the set of non-contiguous tones distributed across the second frequency bandwidth.

公开(公告)号：US20230412325A1

公开(公告)日：2023-12-21

申请号：US17843747

申请日：2022-06-17

Applicant: QUALCOMM Incorporated

Inventor： Lin Yang ,  Bin Tian ,  Youhan Kim ,  Jialing Li Chen

IPC: H04L5/00

CPC classification number: H04L5/0007 ,  H04L5/0048 ,  H04L5/0098 ,  H04L5/0066

Abstract: This disclosure provides methods, devices and systems for reducing PAPR in wireless communications. Some implementations more specifically relate to single-carrier frequency-division multiplexing (SC-FDM) techniques that can be used for wireless communications in wireless local area networks (WLANs). In some aspects, a wireless communication device may modulate a physical layer convergence protocol (PLCP) protocol data unit (PPDU) as a series of symbols in the time domain and may transform a subset of the time-domain symbols into a number (Q) of frequency-domain samples based on a Q-point discrete Fourier transform (DFT). The wireless communication device maps the Q frequency-domain samples to a number (N) of orthogonal subcarriers (representing an orthogonal frequency-division multiplexing (OFDM) symbol), where N>Q, and transforms the N subcarriers into N time-domain samples, based on an inverse fast Fourier transform (IFFT), for transmission over a wireless channel.

公开(公告)号：US11812464B2

公开(公告)日：2023-11-07

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: H04L69/18 ,  H04W74/00 ,  H04L5/00 ,  H04W72/0453 ,  H04W72/0446 ,  H04L69/22 ,  H04W72/21 ,  H04W72/23 ,  H04W84/12

CPC classification number: H04W74/004 ,  H04L5/0053 ,  H04L5/0094 ,  H04L69/18 ,  H04L69/22 ,  H04W72/0446 ,  H04W72/0453 ,  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：US20230337038A1

公开(公告)日：2023-10-19

申请号：US18304310

申请日：2023-04-20

Applicant: QUALCOMM Incorporated

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

IPC: H04W28/02 ,  H04W28/06

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 (HARD), 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.