公开(公告)号：WO2017195738A1

公开(公告)日：2017-11-16

申请号：PCT/JP2017/017415

申请日：2017-05-08

Applicant: 日本電気株式会社

Inventor： 田島　伸一 ,  石井　直人 ,  鹿倉　義一

IPC: H04B7/0452 ,  H04B7/024 ,  H04W16/28 ,  H04W72/12

CPC classification number: H04B7/024 ,  H04B7/0452 ,  H04W16/28 ,  H04W72/12

Abstract: [課題]　データを送信する前に空間多重端末を決定する際に、チャネル情報を平均化した範囲内でのチャネル変動を考慮せず、平均化されたチャネル情報に対して空間多重端末を決定している。このため、実際にデータを送信する際には、平均化の影響により考慮できなかったチャネル情報平均化範囲内でのチャネル変動により、端末間干渉が発生し、スループットが劣化する。 [解決手段]　例示的な実施形態によれば、伝搬路の変動に応じて適切に空間多重端末を決定するため、端末間干渉を抑制することができ、スループットが改善される。

Abstract translation: [问题]当在发送数据之前确定空间多路复用终端时，不考虑信道信息的平均范围内的信道信息，并且平均信道信息 另一方面，空间多路复用终端被决定。 因此，在实际发送数据时，由于平均化的影响而无法考虑的信道信息平均范围内的信道变动，产生终端间干扰，吞吐量下降。 [解决手段]根据示例性实施例，由于根据传播路径的变化适当地确定空间复用终端，所以可以抑制终端间干扰并且提高吞吐量。

公开(公告)号：WO2017194944A1

公开(公告)日：2017-11-16

申请号：PCT/GB2017/051309

申请日：2017-05-11

Applicant: CAMBIUM NETWORKS LTD

Inventor： STRONG, Peter

IPC: G01C19/00 ,  G01C21/18 ,  G01P15/18 ,  H04B7/06 ,  H04B7/0452 ,  H04L25/02

Abstract: At least one Multi User Multiple Input Multiple Output MU-MIMO beam pattern (3) formed by an array of antenna elements (14) at an access point (1) of a point to multi-point wireless communication network comprising a plurality of subscriber modules is stabilised to correct for a change in orientation of the array between a first time interval and a second time interval. An output of a gyroscopic sensor (12) is processed to generate first phase corrections for the first time interval and second phase corrections for the second time interval. Signal propagation characteristics between each antenna element of the array and each of a first (2) and second (4) subscriber module are measured for the first time interval and, based on the measured signal propagation characteristics, the first phase corrections and the second phase corrections, a MU-MIMO beam pattern is formed for the second time interval having a main lobe towards the first (2) subscriber module and a null towards the second (4) subscriber module.

Abstract translation: 在点对多点无线电的接入点（1）处由天线元件阵列（14）形成的至少一个多用户多输入多输出MU-MIMO波束图案（3） 包括多个用户模块的通信网络被稳定以校正阵列在第一时间间隔和第二时间间隔之间的取向变化。 处理陀螺仪传感器（12）的输出以产生第一时间间隔的第一相位校正和第二时间间隔的第二相位校正。 在第一时间间隔内测量阵列的每个天线元件与第一（2）和第二（4）用户模块中的每一个之间的信号传播特性，并基于测量的信号传播特性测量第一相位校正和第二相位 对于具有朝向第一（2）用户模块的主瓣和朝向第二（4）用户模块的主瓣的第二时间间隔形成MU-MIMO波束图。

公开(公告)号：WO2017154555A1

公开(公告)日：2017-09-14

申请号：PCT/JP2017/006294

申请日：2017-02-21

Applicant: 株式会社NTTドコモ

Inventor： 奥山　達樹 ,  須山　聡 ,  小原　辰徳 ,  奥村　幸彦

IPC: H04B7/0452 ,  H04J1/00 ,  H04W16/28

Abstract: 基地局と複数の移動局とを備える無線通信システムにおいて前記複数の移動局と通信を行う基地局であって、前記複数の移動局の各々との間のチャネル行列を取得する取得部と、前記複数の移動局のうち、マルチユーザＭＩＭＯによる通信を行う２以上の移動局についての組み合わせを選択する選択部と、選択された前記組み合わせにおける前記２以上の移動局とマルチユーザＭＩＭＯによる通信を行う通信部と、を有し、前記選択部は、前記２以上の移動局のうち２つの移動局の組み合わせ全てについて、それぞれ、該２つの移動局のチャネル行列の相関値を算出し、２つの移動局の組み合わせ全てについて相関値が所定の閾値以下になるように前記２以上の移動局についての組み合わせを選択する、基地局を提供する。

Abstract translation:

在包括基站和与所述多个移动台进行通信的多个移动台到基站，多个移动台的之间的信道矩阵的无线通信系统 获取单元，其获取，所述多个移动站，用于选择通信的多用户MIMO的两个或更多个移动站的组合的选择单元中，和所述所选择的组合的两个或更多个移动站 用于通过多用户MIMO进行通信的通信单元，以及选择单元，用于所述两个或更多个移动站，分别的两个移动台的所有组合中，两个移动站的信道矩阵的相关值 并且选择两个或更多个移动台的组合，使得两个移动台的所有组合的相关值等于或小于预定阈值。

公开(公告)号：WO2017153732A1

公开(公告)日：2017-09-14

申请号：PCT/GB2017/050599

申请日：2017-03-07

Applicant: CAMBIUM NETWORKS LTD

Inventor： STRONG, Peter

IPC: H04B7/0452 ,  H04B7/06

Abstract: In a multi user multiple input multiple output MU-MIMO wireless communication network comprising an access point (1) and a plurality of subscriber modules (2a-2g), a method of channel sounding comprises forming a respective MU-MIMO beam from the access point to each subscriber module of a first sounding group of subscriber modules by applying a beamforming weightset to a weighting matrix (12), the beamforming weightset having been determined on the basis of previously determined channel estimates. Each MU- MIMO beam is used to transmit a respective sounding symbol (24a, 24b, 24c), each respective sounding symbol being different from each other sounding symbol of the first sounding group. A first sounding symbol is received at a first subscriber module of the first sounding group, and it is determined whether to send a response message to the access point in response to the receipt of the first sounding symbol on the basis of a determination of a received level of interference to the first sounding symbol.

Abstract translation: 在包括接入点（1）和多个用户模块（2a-2g）的多用户多输入多输出MU-MIMO无线通信网络中，信道探测的方法包括形成相应的 通过将波束成形权重集应用于加权矩阵（12），从接入点到第一探测组用户模块的每个用户模块的MU-MIMO波束已经根据先前确定的信道估计来确定波束成形权重集。 每个MU-MIMO波束被用于发送相应的探测符号（24a，24b，24c），每个相应的探测符号不同于第一探测组的每个其他探测符号。 在第一探测组的第一用户模块处接收第一探测符号，并且基于接收到的第一探测符号的确定，确定是否响应于接收到第一探测符号而向接入点发送响应消息 对第一个探测符号的干扰程度。

公开(公告)号：WO2017153498A1

公开(公告)日：2017-09-14

申请号：PCT/EP2017/055490

申请日：2017-03-08

Applicant: CANON KABUSHIKI KAISHA ,  CANON EUROPE LIMITED

Inventor： VIGER, Pascal ,  BARON, Stéphane ,  NEZOU, Patrice

IPC: H04W72/12 ,  H04B7/0452 ,  H04W84/12

Abstract: A physical AP manages a plurality of BSSs through VAPs. The AP sends a trigger frame to reserve a TXOP including resource units the nodes access to transmit data during the reserved TXOP. To improve channel utilization, the trigger frame identifies a plurality of groups, nodes of which are allowed to access the resources units to transmit data during the reserved TXOP. Thus, the AP receives, during the reserved TXOP, data from one node of a first group identified in the trigger frame and data from one node (separate from the first one) of a second and separate group identified in the trigger frame. A single access by the AP to the medium is thus required, reducing the channel occupation due to control frames. In some embodiments, the number of trigger frames can be drastically reduce, while offering resource units to several BSSs.

Abstract translation: 物理AP通过VAP管理多个BSS。 AP发送触发帧以保留包括节点在保留TXOP期间访问以传输数据的资源单元的TXOP。 为了提高信道利用率，触发帧识别多个组，其节点在预留的TXOP期间被允许访问资源单元以发送数据。 因此，AP在保留TXOP期间接收来自触发帧中标识的第一组的一个节点的数据和来自触发帧中标识的第二分离组的一个节点（与第一组分离）的数据。 因此需要AP对媒体的单一访问，减少了由于控制帧而引起的信道占用。 在一些实施例中，触发帧的数量可以急剧减少，同时向多个BSS提供资源单元。

公开(公告)号：WO2017105994A1

公开(公告)日：2017-06-22

申请号：PCT/US2016/065554

申请日：2016-12-08

Applicant: MARVELL WORLD TRADE LTD. ,  SUN, Yakun ,  ZHANG, Hongyuan

Inventor： SUN, Yakun ,  ZHANG, Hongyuan

IPC: H04L5/00 ,  H04W72/04 ,  H04B7/0452 ,  H04B7/06 ,  H04W84/12 ,  H04L25/03

CPC classification number: H04W72/085 ,  H04B7/0452 ,  H04B7/0697 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0037 ,  H04L5/0044 ,  H04L5/0053 ,  H04L5/0064 ,  H04L5/0092 ,  H04L5/0094 ,  H04L27/2613 ,  H04L2025/03426 ,  H04W72/042 ,  H04W84/12

Abstract: Embodiments described herein provide a method for resource unit signaling with reduced data bits in a wireless local area network. At a wireless transceiver, a data frame may be obtained for transmission. The data frame includes a first preamble portion and a second preamble portion compliant with a wireless local area network communication protocol. When an available resource unit for transmitting the data frame is less than an allowed bandwidth, the first preamble portion and the second preamble portion may be configured with resource unit signaling bits. When the available resource unit is greater than or equal to the allowed bandwidth, the resource unit may be virtually divided into a plurality of channels. At least one of the first preamble portion and the second preamble portion may be configured with a first number of bits representing a number of users spatially multiplexed on a channel from the plurality of channels.

Abstract translation: 这里描述的实施例提供了一种用于无线局域网中具有减少的数据比特的资源单元信令的方法。 在无线收发器处，可以获得用于传输的数据帧。 数据帧包括符合无线局域网通信协议的第一前导码部分和第二前导码部分。 当用于发送数据帧的可用资源单元小于允许带宽时，第一前导码部分和第二前导码部分可以配置有资源单元信令比特。 当可用资源单元大于或等于允许带宽时，资源单元可被虚拟地划分为多个信道。 第一前导码部分和第二前导码部分中的至少一个可以配置有表示在来自多个信道的信道上空间复用的用户的数量的第一数量的比特。

公开(公告)号：WO2023075386A1

公开(公告)日：2023-05-04

申请号：PCT/KR2022/016405

申请日：2022-10-26

Applicant: 엘지전자 주식회사

Inventor： 임동국 ,  최진수 ,  장인선 ,  김상국

IPC: H04W24/10 ,  H04B7/06 ,  H04B7/0452 ,  H04L1/00 ,  H04W84/12

Abstract: 무선랜 시스템에서 센싱 절차를 수행하기 위한 방법 및 장치가 개시된다. 본 개시의 일 실시예로, 무선랜 시스템에서 제1 스테이션(STA)에 의해 센싱 절차를 수행하는 방법은, 제2 STA로부터 수신된 NDP에 기초하여 CSI 행렬을 획득하는 단계; 상기 CSI 행렬 중 최대 값과 관련된 2의 보수 값에 기초하여 스케일링 요소를 획득하는 단계; 상기 CSI 행렬에 대해 상기 스케일링 요소에 기초한 스케일링 및 양자화를 수행하여 CSI 피드백을 획득하는 단계; 및 상기 스케일링 요소 및 상기 CSI 피드백이 포함된 CSI 보고 필드를 상기 제2 STA으로 전송하는 단계를 포함할 수 있다.

公开(公告)号：WO2023059965A1

公开(公告)日：2023-04-13

申请号：PCT/US2022/075649

申请日：2022-08-30

Applicant: QUALCOMM INCORPORATED

Inventor： ABOTABL, Ahmed, Attia ,  ABDELGHAFFAR, Muhammad, Sayed, Khairy ,  IBRAHIM, Abdelrahman, Mohamed, Ahmed, Mohamed ,  MUKKAVILLI, Krishna, Kiran ,  BURKE, Joseph, Patrick ,  JI, Tingfang ,  WANG, Renqiu ,  KWON, Hwan Joon

IPC: H04B7/0452 ,  H04B7/06 ,  H04B7/08 ,  H04L5/00 ,  H04B7/0617 ,  H04B7/0848 ,  H04B7/0854 ,  H04B7/086 ,  H04L5/0048 ,  H04L5/0051 ,  H04W72/541

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first mobile station may determine at least one of a channel between the first mobile station and a second mobile station or a relative direction between the first mobile station and the second mobile station. The first mobile station may apply nulling to a communication between the first mobile station and a base station based at least in part on the at least one of the channel between the first mobile station and the second mobile station or the relative direction between the first mobile station and the second mobile station. Numerous other aspects are described.

公开(公告)号：WO2023043342A1

公开(公告)日：2023-03-23

申请号：PCT/SE2021/050883

申请日：2021-09-15

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

Inventor： HUANG, Yezi ,  LU, Chenguang ,  BERG, Miguel

IPC: H04B7/024 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/08 ,  H04W88/08

Abstract: A network entity can be in a communications network that includes a plurality of network nodes communicatively coupled to the network entity via a cascaded topology. The network entity can transmit scheduling information to a first network node of the plurality of network nodes. The network entity can further receive an indication of an intermediate beamforming weight from the first network node. The network entity can further determine a part of a frequency-domain beamforming weight based on the indication of the intermediate beamforming weight. The network entity can further transmit an indication of the part of the frequency-domain beamforming weight to the first network node. The network entity can further communicate data with the communication device via the first network node.

公开(公告)号：WO2023024061A1

公开(公告)日：2023-03-02

申请号：PCT/CN2021/114958

申请日：2021-08-27

Applicant: QUALCOMM INCORPORATED ,  LEE, Hyojin ,  ZHANG, Yu ,  HUANG, Yi ,  CHEN, Wanshi ,  KWON, Hwan Joon

Inventor： LEE, Hyojin ,  ZHANG, Yu ,  HUANG, Yi ,  CHEN, Wanshi ,  KWON, Hwan Joon

IPC: H04B7/0417 ,  H04B7/06 ,  H04B7/0452 ,  H04B7/0456

Abstract: Methods, systems, and devices for wireless communication are described. In some systems, a base station may transmit subband uplink precoding information to a user equipment (UE). The base station may transmit a first control message to the UE to indicate a set of downlink resources for a downlink message associated with the subband uplink precoding information for the UE. The base station may transmit a second control message to the UE to indicate a set of uplink resources for an uplink message. The base station may transmit the downlink message to the UE via the set of downlink resources indicated by the first control message. The downlink message, the second control message, or both may include the subband uplink precoding information for the UE. The UE may transmit an uplink message to the base station via the set of uplink resources using the subband uplink precoding information.