公开(公告)号：WO2018231386A1

公开(公告)日：2018-12-20

申请号：PCT/US2018/032052

申请日：2018-05-10

申请人： QUALCOMM INCORPORATED

发明人： ELSHERIF, Ahmed Ragab ,  KATAR, Srinivas

IPC分类号： H04L1/00

CPC分类号： H04L1/0034 ,  H04B7/0452 ,  H04L1/0004 ,  H04L1/0005 ,  H04L1/001 ,  H04L1/0011 ,  H04L2001/0093

摘要： Certain aspects of the present disclosure relate to determining a signaling field modulation and coding scheme (MCS) value for communicating information in a signaling field of a frame to a plurality of user devices. Certain aspects of the present disclosure provide a method for wireless communications by an access point (AP). The method includes determining a signaling field modulation and coding scheme (MCS) value for communicating information in a signaling field of a frame to a plurality of user devices based on one or more data MCS values for communicating payload data of the frame to the plurality of user devices. The method further includes transmitting the frame to the plurality of user devices using the determined signaling field MCS value for the signaling field.

公开(公告)号：WO2018151862A1

公开(公告)日：2018-08-23

申请号：PCT/US2018/000079

申请日：2018-02-16

申请人： QUALCOMM INCORPORATED

发明人： HUANG, Xiaolong ,  JAGANATHAN, Madhan ,  HOUGHTON, Nathaniel David ,  NAIR, Madhavan ,  KATAR, Srinivas ,  ELSHERIF, Ahmed Ragab

IPC分类号： H04W72/12 ,  H04W84/12

CPC分类号： H04W72/1257 ,  H04W72/04 ,  H04W72/1252 ,  H04W84/12

摘要： A method, an apparatus, and a computer-readable medium for wireless communication are provided. In one aspect, an apparatus may be configured to determine a scheduling metric for each respective station of a plurality of stations. The scheduling metric for each station may be based on an effective spatial-time-frequency physical layer (PHY) capability for the station and a consumption rate of spatial-time- frequency resources by the respective station. The effective spatial-time-frequency PHY capability for the station may be a product of a target percentage of spatial-time resources allocated to the station, an effective number of spatial streams supported by the respective station, and a maximum bandwidth. The consumption rate of spatial- time-frequency resources may be a transmit opportunity (TXOP) moving average of consumption rate by the station. The apparatus may be configured to schedule each station of the plurality of stations for communication based on the determined scheduling metric for each respective station.

公开(公告)号：WO2016195913A1

公开(公告)日：2016-12-08

申请号：PCT/US2016/031095

申请日：2016-05-06

申请人： QUALCOMM INCORPORATED

发明人： ELSHERIF, Ahmed Ragab ,  GAO, Qinghai

IPC分类号： H04W72/04

CPC分类号： H04W72/121 ,  H04B7/0452 ,  H04W72/046

摘要： Certain aspects of the present disclosure relate to a robust and systematic multiuser (MU) grouping and scheduling scheme. Certain aspects of the present disclosure provide an apparatus for wireless communications. The apparatus generally includes a processing system configured to: assign devices to one or more groups, wherein each group has at least a number of devices and schedule MU multiple-input multiple-output (MIMO) transmissions to one or more sets of devices, each scheduled set of devices comprising a subset of devices of one of the groups; and an interface configured to output data for simultaneous transmissions to the scheduled sets of devices.

摘要翻译： 本公开的某些方面涉及鲁棒且系统的多用户（MU）分组和调度方案。 本公开的某些方面提供了一种用于无线通信的装置。 该设备通常包括处理系统，其被配置为：将设备分配给一个或多个组，其中每个组具有至少多个设备并且调度MU到多组设备的多输入多输出（MIMO）传输，每个组 包括所述组中的一个的设备的子集的预定的设备集合; 以及被配置为输出用于同时传输到预定的设备组的数据的接口。

公开(公告)号：WO2021030234A2

公开(公告)日：2021-02-18

申请号：PCT/US2020/045550

申请日：2020-08-09

申请人： QUALCOMM INCORPORATED

发明人： CHEN, Jialing Li ,  VERMANI, Sameer ,  YANG, Lin ,  TIAN, Bin ,  JONES, IV, Vincent Knowles ,  KIM, Youhan ,  ELSHERIF, Ahmed Ragab

IPC分类号： H04L27/26 ,  H04L5/00 ,  H04L27/2602 ,  H04L5/0053 ,  H04L5/0091 ,  H04L5/0094 ,  H04L69/18 ,  H04L69/22 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/0446 ,  H04W72/0453 ,  H04W74/002 ,  H04W74/004 ,  H04W84/12

摘要： 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：WO2019140195A1

公开(公告)日：2019-07-18

申请号：PCT/US2019/013202

申请日：2019-01-11

申请人： QUALCOMM INCORPORATED

发明人： MALISETTY, Kiran Babu ,  ELSHERIF, Ahmed Ragab

IPC分类号： H04W74/08 ,  H04W84/12 ,  H04B7/0413

摘要： This disclosure provides systems, devices, apparatus and methods, including computer programs encoded on storage media, for wireless communication. In one aspect, an access point for wireless communications may include a transceiver; a memory; and a processor communicatively coupled to the transceiver and the memory, the processor being configured to: determine an interference level on a selected bandwidth; selectively transmit, via the transceiver, a clear-to-send (CTS)-to-self frame based on the determined interference level; and initiate a sounding sequence based on the transmitted CTS-to-self frame.

公开(公告)号：WO2018212847A1

公开(公告)日：2018-11-22

申请号：PCT/US2018/026426

申请日：2018-04-06

申请人： QUALCOMM INCORPORATED

发明人： ZOU, Chao ,  ELSHERIF, Ahmed Ragab ,  ZHU, Hao ,  KATAR, Srinivas

IPC分类号： H04L1/00 ,  H04B7/0456 ,  H04L1/20

CPC分类号： H04B7/024 ,  H04B7/0452 ,  H04B7/0456 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0048 ,  H04L1/203 ,  H04L25/08 ,  H04W24/08 ,  H04W88/06

摘要： The present disclosure provides techniques for grouping in multi-user multiple-input-multiple-output (MU-MIMO) systems by using limited probing. With more wireless stations (STAs) being used in MU-MIMO groups, the probing used to obtain packet error metrics to determine the throughput for selecting the MU-MIMO groups for transmission can become more complex and involve a larger overhead. To reduce the probing overhead, various techniques are described in this disclosure. For example, an access point (AP) can identify a trigger to initiate a packet error probing. In response to the trigger, the AP embeds one or more probing packets that are part of the packet error probing within a short interframe space (SIFS)-burst data transmission process to take advantage of the existing structure of the process. Then, the AP can update at least one packet error metric (e.g., packet error rate or PER) based on feedback received in response to the probing packets.

公开(公告)号：WO2018071108A1

公开(公告)日：2018-04-19

申请号：PCT/US2017/049857

申请日：2017-09-01

申请人： QUALCOMM INCORPORATED

发明人： ELSHERIF, Ahmed Ragab ,  HOUGHTON, Nathaniel David

IPC分类号： H04W74/08 ,  H04W84/12

CPC分类号： H04B7/0452 ,  H04L5/0048 ,  H04W74/0816 ,  H04W84/12

摘要： The disclosure provides techniques for sounding sequence protection in multi-user multiple-input-multiple-output (MU-MIMO) communications for wireless local area networks (WLANs). An access point (AP) may select a station (STA) from multiple STAs in a MU-MIMO group. The AP may then transmit a request-to-send (RTS) frame, where the RTS is addressed to the selected STA. The AP may receive a clear-to-send (CTS) frame from the selected station and may perform, in response to receiving the CTS frame, a sounding sequence with the MU-MIMO group. After completion of the sounding sequence, the AP may transmit MU-MIMO data communications to at least one of the STAs in the MU-MIMO group.

摘要翻译： 本公开提供了用于无线局域网（WLAN）的多用户多输入多输出（MU-MIMO）通信中的探测序列保护的技术。 接入点（AP）可以从MU-MIMO组中的多个STA中选择一个站（STA）。 AP然后可以发送请求发送（RTS）帧，其中RTS被寻址到选择的STA。 AP可以从所选择的站接收清除发送（CTS）帧，并且可以响应于接收到CTS帧，利用MU-MIMO组来执行探测序列。 在完成探测序列之后，AP可以将MU-MIMO数据通信传送给MU-MIMO组中的至少一个STA。

公开(公告)号：WO2017184282A1

公开(公告)日：2017-10-26

申请号：PCT/US2017/023247

申请日：2017-03-20

申请人： QUALCOMM INCORPORATED

发明人： GAO, Qinghai ,  HOUGHTON, Nathaniel David ,  ELSHERIF, Ahmed Ragab ,  TAHIR, Ehab

IPC分类号： H04L1/00

CPC分类号： H04L1/0003 ,  H04B7/0452 ,  H04L1/00 ,  H04L1/003 ,  H04W72/085

摘要： Wireless node selects modulation coding schemes (MCS) and number of spatial streams for transmitting data to devices via a MU-MIMO transmission based on the total number of spatial streams. In one implementation, a wireless node selects first MCS, first number of spatial stream(s) for a first device, and total number of spatial streams to be used in the MU-MIMO transmission so as to maximize the data rate to the first device, then selects a second MCS and a second number of spatial stream(s) for a second device based on the selected total number of spatial streams. In another implementation, the wireless node toggles the first selection of the MCS and spatial stream(s) between the first and second devices for fairness purposes. In another implementation, a wireless selects the MCS and the spatial streams for the receiving nodes so as to maximize the aggregate data rate for the MU-MIMO transmission.

摘要翻译： 无线节点基于空间流的总数选择调制编码方案（MCS）和用于经由MU-MIMO传输向设备传输数据的空间流的数量。 在一个实现中，无线节点选择第一MCS，第一设备的第一数量的空间流以及要在MU-MIMO传输中使用的空间流的总数，以便最大化到第一设备的数据速率 ，然后基于所选择的空间流的总数为第二设备选择第二MCS和第二数量的空间流。 在另一实现中，出于公平目的，无线节点切换第一和第二设备之间的MCS和空间流的第一选择。 在另一实现中，无线为接收节点选择MCS和空间流，以便最大化MU-MIMO传输的总数据速率。

公开(公告)号：WO2019099139A1

公开(公告)日：2019-05-23

申请号：PCT/US2018/056186

申请日：2018-10-17

申请人： QUALCOMM INCORPORATED

发明人： ELSHERIF, Ahmed Ragab ,  KATAR, Srinivas

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

CPC分类号： H04W72/12 ,  H04B7/0452 ,  H04L1/0003 ,  H04W28/0278 ,  H04W72/0413 ,  H04W72/1268 ,  H04W84/12 ,  H04W88/08

摘要： Uplink multi-user multiple-in, multiple-out (UL MU-MIMO) transmissions involve coordinating or scheduling stations communications with an access point. Methods and systems for scheduling UL MU-MIMO transmissions provide selection of stations permitted to communicate during the UL MU-MIMO transmission. One method includes transmitting a first trigger message that requests each station to transmit a second message to the access point. The method also includes receiving the second messages from responding stations and estimating, based on the second messages, one or more parameters for each responding station. The method further includes generating a schedule for the stations to transmit data to the access point and transmitting a second trigger message to the stations, the second trigger message identifying the schedule and the stations that are scheduled to transmit UL data to the access point according to the schedule. The method also includes receiving data during the UL MU-MIMO transmission opportunity from the stations.

公开(公告)号：WO2018102054A1

公开(公告)日：2018-06-07

申请号：PCT/US2017/058317

申请日：2017-10-25

申请人： QUALCOMM INCORPORATED

发明人： ELSHERIF, Ahmed Ragab ,  KATAR, Srinivas

IPC分类号： H04B7/0452 ,  H04B7/06

CPC分类号： H04W4/08 ,  H04B7/0452 ,  H04B7/0617 ,  H04B17/336 ,  H04L5/0023 ,  H04L5/006 ,  H04L67/322 ,  H04L69/323 ,  H04W24/02 ,  H04W28/14

摘要： Methods and apparatuses are disclosed for managing multi-user multiple-input multiple-out (MU-MIMO) groups by a wireless device. For at least some embodiments, a wireless communication device may determine a MU-MIMO group by identifying a plurality of MU-MIMO capable stations, determine a plurality of MU-MIMO group candidates from the plurality of MU-MIMO capable STAs based, at least in part, on a predicted data throughput of an MU-MIMO group including at least one of the plurality of MU-MIMO capable STAs, and create a MU-MIMO group from the plurality of MU-MIMO candidates. The predicted data throughput may be based, at least in part, on media access control (MAC) and physical (PHY) layer parameters. In some embodiments, the PHY layer parameters may include historic group size and/or historic multi-user signal-to-interference-plus-noise ratio data.