公开(公告)号：WO2022005677A1

公开(公告)日：2022-01-06

申请号：PCT/US2021/035374

申请日：2021-06-02

Applicant: QUALCOMM INCORPORATED

Inventor： YANG, Lin ,  KIM, Youhan ,  TIAN, Bin

IPC: H04L25/03 ,  H04W28/06 ,  H04L25/03866 ,  H04L27/2617 ,  H04L69/08 ,  H04L69/22 ,  H04W74/008 ,  H04W74/0816 ,  H04W84/12

Abstract: This disclosure provides systems, methods, and apparatuses for wireless communication that can be used to reduce the peak-to-average power ratio (PAPR) of data transmissions by increasing the degree of randomness with which data is scrambled for transmission over a wireless medium. In some implementations, a transmitting device may determine a scrambler seed value that includes at least 11 bits, where at least one of the 7 least significant bits (LSBs) of the scrambler seed value has a non-zero value. The transmitting device may generate a scrambling sequence based on the scrambler seed value and a polynomial, may construct a physical layer convergence protocol (PLCP) protocol data unit (PPDU) that includes a multi-user (MU) request-to-send (RTS) frame and the scrambler seed value, may scramble one or more portions of the PPDU based on the scrambling sequence; and may transmit the PPDU over a wireless medium.

公开(公告)号：WO2021222713A1

公开(公告)日：2021-11-04

申请号：PCT/US2021/030105

申请日：2021-04-30

Applicant: QUALCOMM INCORPORATED

Inventor： SHELLHAMMER, Stephen, Jay ,  TIAN, Bin ,  RAISSINIA, Alireza ,  KIM, Youhan

IPC: H04W12/037 ,  H04L27/26 ,  H04W84/12

Abstract: This disclosure provides methods, devices and systems for generating a secure long training field (LTF). In some implementations, the secure LTF may include a randomized bit sequence that is difficult, if not impossible, to replicate by any device other than the transmitting device and the intended receiving device. For example, the transmitting device may use a block cipher or stream cipher to generate a pseudorandom bit sequence and may select a subset of bits of the pseudorandom bit sequence to be mapped to a sequence of modulation symbols representing an LTF symbol of the secure LTF. More specifically, each of the modulation symbols is mapped to a respective one of a number of subcarriers spanning a bandwidth of the secure LTF. The transmitting device may further transmit a physical layer convergence protocol (PLCP) protocol data unit (PPDU) that includes the secure LTF to the receiving device.

公开(公告)号：WO2021178511A1

公开(公告)日：2021-09-10

申请号：PCT/US2021/020635

申请日：2021-03-03

Applicant: QUALCOMM INCORPORATED

Inventor： YANG, Lin ,  TIAN, Bin ,  KIM, Youhan

IPC: H04L5/00

Abstract: This disclosure provides methods, devices and systems that support communicating using orthogonal frequency division multiple access (OFDMA) according to a tone plan that supports 20 MHz subchannel puncturing within a wireless channel. In some aspects, a non-legacy tone plan may define a set of tones for a resource unit (RU) such that the RU does not overlap a 20 MHz subchannel boundary of the wireless channel. The locations of the set of tones in the non-legacy tone plan may be shifted relative to corresponding tones associated with a corresponding RU according to a legacy tone plan. One or more of the disclosed tone plans may enable puncturing of subchannels while making use of some RUs that would otherwise partially overlap a punctured subchannel in the legacy tone plan.

公开(公告)号：WO2021030233A1

公开(公告)日：2021-02-18

申请号：PCT/US2020/045549

申请日：2020-08-09

Applicant: QUALCOMM INCORPORATED

Inventor： CHEN, Jialing Li ,  VERMANI, Sameer ,  YANG, Lin ,  TIAN, Bin ,  JONES, IV, Vincent Knowles ,  KIM, Youhan

IPC: H04L27/26 ,  H04L5/00

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：WO2017181046A2

公开(公告)日：2017-10-19

申请号：PCT/US2017/027681

申请日：2017-04-14

Applicant: QUALCOMM INCORPORATED

Inventor： CHENG, Chao ,  ZHANG, Ning ,  KIM, Youhan ,  CHEN, Chin-Hung

IPC: H04L1/00 ,  H04L5/00 ,  H04W72/04 ,  H04W72/08 ,  H04W72/10

CPC classification number: H04W72/0446 ,  H04B7/0452 ,  H04B17/309 ,  H04B17/318 ,  H04L1/0002 ,  H04L1/0015 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/0027 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/006 ,  H04L5/0094 ,  H04W28/0236 ,  H04W52/0216 ,  H04W52/245 ,  H04W84/12 ,  Y02D70/142 ,  Y02D70/144

Abstract: The disclosure provides for rate adaptation based on channel power tracking in wireless communications. An Access Point (AP) may measure a full-band channel quality information (CQI) for a plurality of wireless stations associated with the AP and allocate a sub-band resource unit from the plurality of sub-band resource units to a wireless station based on the full-band CQI. Aspects of the disclosure also include techniques for adjusting a data rate associated with the wireless station based on a channel power of the sub-band resource unit.

Abstract translation: 本公开提供了基于无线通信中的信道功率跟踪的速率自适应。 接入点（AP）可以测量与AP相关联的多个无线站的全带信道质量信息（CQI），并且将来自多个子带资源单元的子带资源单元分配给基于无线站 在全频带CQI上。 本公开的各方面还包括用于基于子带资源单元的信道功率来调整与无线站相关联的数据速率的技术。

公开(公告)号：WO2017172779A1

公开(公告)日：2017-10-05

申请号：PCT/US2017/024555

申请日：2017-03-28

Applicant: QUALCOMM INCORPORATED

Inventor： KIM, Beomsup ,  ZHANG, Ning ,  ZHANG, Xiaoxin ,  KIM, Youhan

IPC: H04B7/06 ,  H04B7/08

Abstract: Methods, systems, and devices for wireless communication are described. An access point (AP) may switch antenna array configurations during reception of a packet to determine channel characteristic information for the antenna array configurations. The AP may use the channel characteristic information to select an antenna array configuration for use, and to determine a beamforming steering matrix for the selected antenna array configuration. In some cases, the AP may use multiple antenna array configurations to transmit training fields in the preamble of a packet. The AP may receive channel characteristic information for each of the antenna array configurations. The AP may use the channel characteristic information to select an antenna array configuration for use, and to determine a beamforming steering matrix for the selected antenna array configuration.

Abstract translation: 描述了用于无线通信的方法，系统和设备。 接入点（AP）可以在接收分组期间切换天线阵列配置以确定天线阵列配置的信道特征信息。 AP可以使用信道特征信息来选择天线阵列配置以供使用，并且为所选天线阵列配置确定波束成形引导矩阵。 在一些情况下，AP可以使用多个天线阵列配置来在分组的前导码中发送训练字段。 AP可以接收每个天线阵列配置的信道特性信息。 AP可以使用信道特性信息来选择天线阵列配置以供使用，并且为所选择的天线阵列配置确定波束成形引导矩阵。

公开(公告)号：WO2017160809A1

公开(公告)日：2017-09-21

申请号：PCT/US2017/022266

申请日：2017-03-14

Applicant: QUALCOMM INCORPORATED

Inventor： ZHANG, Ning ,  ZHANG, Xiaoxin ,  KIM, Youhan ,  ALDANA, Carlos Horacio ,  KELLIHER, Patrick ,  LEE, Yen-Feng

IPC: G01S5/14

CPC classification number: G01S5/12 ,  G01S5/14 ,  G01S11/02 ,  G01S13/76 ,  H04W64/00

Abstract: This disclosure provides systems, methods and apparatuses for performing ranging operations between wireless devices. In some implementations, wireless devices can exchange ranging packets that include packet extensions containing a plurality of long training fields (LTFs). The wireless devices can use the LTFs in the ranging packets to obtain a plurality of round-trip time (RTT) values based on a single exchange of ranging packets. The wireless devices also can use the LTFs to estimate angle of arrival (AoA) and angle of departure (AoD) information of the exchanged ranging packets.

Abstract translation: 本公开提供了用于在无线设备之间执行测距操作的系统，方法和装置。 在一些实现中，无线设备可以交换包括包含多个长训练字段（LTF）的分组扩展的测距分组。 无线设备可以使用测距分组中的LTF来基于测距分组的单个交换获得多个往返时间（RTT）值。 无线设备还可以使用LTF来估计交换的测距分组的到达角（AoA）和出发角（AoD）信息。

公开(公告)号：WO2017031451A1

公开(公告)日：2017-02-23

申请号：PCT/US2016/047848

申请日：2016-08-19

Applicant: QUALCOMM INCORPORATED

Inventor： VERMANI, Sameer ,  TIAN, Bin ,  CHEN, Jialing Li ,  BHARADWAJ, Arjun ,  KIM, Youhan

IPC: H04B7/06

CPC classification number: H04L5/0057 ,  H04B7/0417 ,  H04B7/0626 ,  H04B7/0643 ,  H04L5/0044 ,  H04L5/006

Abstract: Aspects of the disclosure provide techniques for sounding procedures using frames with some portions that use relatively long symbol durations. A method id provided that may be performed by an access point. The method generally includes generating one or more frames, collectively having one or more training fields allowing one or more stations to calculate channel information and an indication of one or more feedback parameters for the one or more stations to use for generating the channel information; transmitting the one or more frames; and receiving channel information from at least one of the stations calculated, in accordance with the one or more feedback parameters, for a corresponding one or more reporting units based on the one or more training fields, wherein the channel information is received via a report containing a plurality of channel information parameters for each of the one or more reporting units.

Abstract translation: 本公开的方面提供了使用具有使用相对长的符号持续时间的一些部分的帧的探测过程的技术。 提供可由接入点执行的方法id。 该方法通常包括生成一个或多个帧，共同具有允许一个或多个站计算信道信息的一个或多个训练场，以及用于一个或多个站用于生成信道信息的一个或多个反馈参数的指示; 发送一个或多个帧; 以及基于所述一个或多个训练场，从根据所述一个或多个反馈参数计算出的对应的一个或多个报告单元计算出的至少一个站的信道信息，其中所述信道信息经由包含 用于所述一个或多个报告单元中的每一个的多个信道信息参数。

公开(公告)号：WO2016182960A1

公开(公告)日：2016-11-17

申请号：PCT/US2016/031368

申请日：2016-05-06

Applicant: QUALCOMM INCORPORATED

Inventor： HIRSCH, Olaf Josef ,  KIM, Youhan

IPC: H04B7/04

CPC classification number: H04W72/0446 ,  H04B7/0452 ,  H04L1/06 ,  H04L1/1812 ,  H04L1/1819

Abstract: A method of transmitting a frame of data to a receiving (RX) device with multiple antennas. A transmitting (TX) device encodes a first portion of the data frame for a first MU-MIMO stream, and encodes a second portion of the data frame for a second MU-MIMO stream. The TX device then transmits the first encoded portion via the first MU-MIMO stream to a first antenna of the RX device, and transmits the second encoded portion via the second MU-MIMO stream to a second antenna of the RX device.

Abstract translation: 一种将数据帧发送到具有多个天线的接收（RX）设备的方法。 发射（TX）设备对第一MU-MIMO流的数据帧的第一部分进行编码，并对第二MU-MIMO流的数据帧的第二部分进行编码。 然后，TX设备经由第一MU-MIMO流将第一编码部分发送到RX设备的第一天线，并且经由第二MU-MIMO流将第二编码部分发送到RX设备的第二天线。

公开(公告)号：WO2016178809A1

公开(公告)日：2016-11-10

申请号：PCT/US2016/027683

申请日：2016-04-15

Applicant: QUALCOMM INCORPORATED

Inventor： HIRSCH, Olaf, Josef ,  CHO, James, Simon ,  MERLIN, Simone ,  KIM, Youhan ,  FREDERIKS, Guido, Robert ,  WANG, Jibing

IPC: H04W72/12 ,  H04W88/06 ,  H04W84/12

CPC classification number: H04W72/1278 ,  H04L45/7453 ,  H04L69/22 ,  H04W72/1215 ,  H04W72/1236 ,  H04W74/0816 ,  H04W84/12

Abstract: Methods, systems, and devices are described for wireless communication. A wireless device may identify an upcoming interference period, determine a receive end time based on when the interference period will begin to disrupt incoming messages, and transmit a scheduling outlook message to a transmitter to schedule around the interference in response to receiving a packet (request-to-send (RTS) or data). The wireless device may hash a receiver address (RA) associated with the packet exchange message such as a clear-to-send message or a block acknowledgement to make room for the scheduling outlook message. An example scheduling outlook field (in the place of the full RA field) may include a shortened RA, a number of supported spatial streams, a supported bandwidth, a set of tone allocation units (TAUs), a receive end time (or receive duration), and an interference level.

Abstract translation: 描述了用于无线通信的方法，系统和设备。 无线设备可以识别即将到来的干扰周期，基于干扰周期何时开始中断输入消息来确定接收结束时间，并且响应于接收到分组（请求）向发射机发送调度外观消息以调度干扰 发送（RTS）或数据）。 无线设备可以将与分组交换消息相关联的接收器地址（RA）哈希，例如清除发送消息或块确认，以为调度前景消息腾出空间。 示例性调度展望字段（在整个RA字段的地方）可以包括缩短的RA，支持的空间流的数量，支持的带宽，一组音调分配单元（TAU），接收结束时间（或接收持续时间 ）和干扰电平。