公开(公告)号：US20160345343A1

公开(公告)日：2016-11-24

申请号：US14857562

申请日：2015-09-17

Applicant: QUALCOMM Incorporated

Inventor： Ahmed Ragab Elsherif ,  Qinghai Gao ,  Xiaolong Huang ,  Ehab Tahir ,  Nathaniel Houghton ,  Vincent Knowles Jones, IV ,  Srinivas Katar

IPC: H04W72/12 ,  H04W72/10 ,  H04L1/00 ,  H04B7/04

CPC classification number: H04W72/121 ,  H04B7/0452 ,  H04B7/0689 ,  H04B7/0697 ,  H04L1/0003 ,  H04L1/0009 ,  H04L5/0092 ,  H04W72/046 ,  H04W72/10 ,  H04W72/1226 ,  H04W72/1231 ,  H04W72/1247 ,  H04W72/1273 ,  H04W72/1289

Abstract: Methods, systems, and apparatuses are described for wireless communications. More particularly, an access point (AP) identifies a plurality of multi-user multiple-input multiple-output (MU-MIMO) groups associated with a wireless station (STA). The AP determines a communication metric associated with each of the plurality of MU-MIMO groups. The communication metric provides an indication of the compatibility of the STAs in the MU-MIMO group. The AP prioritizes at least one of the plurality of MU-MIMO groups based at least in part on the communication metric associated with the prioritized MU-MIMO group. The AP creates a preferred group list and/or a blacklisted group list and included the prioritized MU-MIMO group in the appropriate group list.

Abstract translation: 为无线通信描述了方法，系统和装置。 更具体地，接入点（AP）识别与无线站（STA）相关联的多个多用户多输入多输出（MU-MIMO）组。 AP确定与多个MU-MIMO组中的每一个相关联的通信度量。 通信度量提供MU-MIMO组中STA的兼容性的指示。 AP至少部分地基于与优先化的MU-MIMO组相关联的通信度量来优先考虑多个MU-MIMO组中的至少一个。 AP创建优选组列表和/或黑名单组列表，并将优先级MU-MIMO组包括在适当的组列表中。

公开(公告)号：US09485674B2

公开(公告)日：2016-11-01

申请号：US15074905

申请日：2016-03-18

Applicant: QUALCOMM Incorporated

Inventor： Shu Du ,  Zhanfeng Jia ,  Ning Zhang ,  Guido R. Frederiks ,  Vincent K. Jones ,  Qinghai Gao

IPC: H04L1/00 ,  H04W24/02 ,  H04J9/00 ,  H04W28/06 ,  H04B7/04 ,  H04B7/06 ,  H04L1/06 ,  H04L1/20

CPC classification number: H04W24/02 ,  H04B7/0452 ,  H04B7/0617 ,  H04B7/0626 ,  H04J9/00 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0019 ,  H04L1/0026 ,  H04L1/06 ,  H04L1/203 ,  H04W28/06 ,  Y02D50/10

Abstract: A method of providing rate adaptation in a multi-user wireless communication system including single-user beamforming (SU-BF) and multi-user multiple-input multiple-output (MU-MIMO) is described. In this method, a master rate, which is a modulation and coding scheme (MCS) for the SU-BF, is determined. An MCS for each transmit mode is derived from the master rate using a rate mapping. Using the results from the mapping, the master rate, instead of the MCS for each transmit mode, is tracked. In one embodiment, a mapping calibration is periodically performed.

公开(公告)号：US20160204897A1

公开(公告)日：2016-07-14

申请号：US15074905

申请日：2016-03-18

Applicant: QUALCOMM Incorporated

Inventor： Shu Du ,  Zhanfeng Jia ,  Ning Zhang ,  Guido R. Frederiks ,  Vincent K. Jones ,  Qinghai Gao

IPC: H04L1/00 ,  H04B7/04 ,  H04W28/06

CPC classification number: H04W24/02 ,  H04B7/0452 ,  H04B7/0617 ,  H04B7/0626 ,  H04J9/00 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0019 ,  H04L1/0026 ,  H04L1/06 ,  H04L1/203 ,  H04W28/06 ,  Y02D50/10

Abstract: A method of providing rate adaptation in a multi-user wireless communication system including single-user beamforming (SU-BF) and multi-user multiple-input multiple-output (MU-MIMO) is described. In this method, a master rate, which is a modulation and coding scheme (MCS) for the SU-BF, is determined. An MCS for each transmit mode is derived from the master rate using a rate mapping. Using the results from the mapping, the master rate, instead of the MCS for each transmit mode, is tracked. In one embodiment, a mapping calibration is periodically performed.

Abstract translation: 描述了在包括单用户波束成形（SU-BF）和多用户多输入多输出（MU-MIMO）的多用户无线通信系统中提供速率适配的方法。 在该方法中，确定作为SU-BF的调制和编码方案（MCS）的主速率。 使用速率映射从主速率导出每个发送模式的MCS。 使用映射的结果，跟踪每个传输模式的主速率而不是MCS。 在一个实施例中，定期执行映射校准。

公开(公告)号：US09160643B2

公开(公告)日：2015-10-13

申请号：US13829272

申请日：2013-03-14

Applicant: QUALCOMM Incorporated

Inventor： Qinghai Gao ,  Balaji Srinivasan Babu ,  Shu Du

IPC: H04L12/26 ,  H04B7/04 ,  H04B7/06

CPC classification number: H04L43/0888 ,  H04B7/0413 ,  H04B7/0452 ,  H04B7/0617 ,  H04B7/0689

Abstract: Systems and methods are disclosed for generating a statistical profile of a MIMO channel. Packets of information may be transmitted over an interval of time to a plurality of stations using a plurality of MIMO modes. Each packet may be binned and a goodput value corresponding to the bin, the station and the MIMO mode may be determined stored.

Abstract translation: 公开了用于生成MIMO信道的统计简档的系统和方法。 信息包可以使用多个MIMO模式通过时间间隔传送到多个站。 可以对每个分组进行分组，并且可以确定存储对应于bin，站和MIMO模式的有效输入值。

公开(公告)号：US20140269964A1

公开(公告)日：2014-09-18

申请号：US14059073

申请日：2013-10-21

Applicant: QUALCOMM Incorporated

Inventor： Shu Du ,  Qinghai Gao ,  James Simon Cho ,  Chin-Hung Chen ,  Didier Johannes Richard Van Nee

IPC: H04B7/04

CPC classification number: H04B7/0452 ,  H04B7/0617 ,  H04B7/0691 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/009 ,  H04L1/06 ,  H04L1/1621 ,  H04L1/1685

Abstract: An access point can include an array of antennas and a smart antenna selector. The smart antenna selector is configured to select a subset of antennas from the antenna array for use in multi-user multiple-input multiple-output (MU MIMO) data transmissions. Stations that are communicatively coupled to the access point can be selected for inclusion in a multi-user group based, at least in part, on performance measurements of the stations. Performance measurements are determined directly and indirectly from data transmissions sent in response to sounding packets. Antennas for use in MU MIMO data transmissions are selected for the antenna array based, at least in part, on previous antenna selections used for single user data transmissions.

Abstract translation: 接入点可以包括天线阵列和智能天线选择器。 智能天线选择器被配置为从天线阵列中选择天线的子集，以用于多用户多输入多输出（MU MIMO）数据传输。 可以至少部分地基于站的性能测量来选择通信地耦合到接入点的站点以包括在多用户组中。 性能测量直接和间接地从响应于声音分组发送的数据传输确定。 至少部分地基于用于单用户数据传输的先前天线选择天线阵列来选择用于MU MIMO数据传输的天线。

公开(公告)号：US20140254424A1

公开(公告)日：2014-09-11

申请号：US13843720

申请日：2013-03-15

Applicant: QUALCOMM INCORPORATED

Inventor： Qinghai Gao ,  Vishnu Vardhan Bala Krishnan ,  Shu Du ,  Zhanfeng Jia

IPC: H04W24/02

CPC classification number: H04L1/0001 ,  H04L1/0003 ,  H04L1/0007 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/1614 ,  H04L1/1628 ,  H04W28/22

Abstract: Various aspects of the disclosure described herein provide for optimizing rate control during a selection of a communications profile from a set of communications profiles by taking into account effective frame aggregation size as a function of packet error rate (PER). An expected throughput may also be determined for each communications profile and updated after each transmission so that a communications profile having the highest expected throughput may be chosen for a particular frame transmission.

Abstract translation: 本文所描述的公开内容的各个方面提供了在通过考虑作为分组错误率（PER）的函数的有效帧聚合大小的情况下，在从一组通信简档选择通信简档期间优化速率控制。 还可以为每个通信简档确定期望的吞吐量，并且在每个传输之后更新，以便可以针对特定的帧传输选择具有最高预期吞吐量的通信简档。

公开(公告)号：US20140254408A1

公开(公告)日：2014-09-11

申请号：US14038027

申请日：2013-09-26

Applicant: QUALCOMM Incorporated

Inventor： Ashish Kumar Shukla ,  Naveen Pratap Singh ,  Shu Du ,  Qinghai Gao ,  Zhanfeng Jia ,  Vishnu Vardhan Bala Krishnan

IPC: H04L1/00 ,  H04W24/02

CPC classification number: H04L1/0002 ,  H04L1/0007 ,  H04L1/1614 ,  H04L1/1685

Abstract: MAC layer frame aggregation and block acknowledgement are used in some WLAN technologies to improve efficiency of a communications channel by reducing PHY layer overhead. A frame aggregation window size defines how many MAC protocol data units (MPDUs) are included in an aggregated MPDU (AMPDU) frame. The frame aggregation window for a subsequent AMPDU frame is typically dependent upon the characteristics of the block acknowledgement—such as the number of non-acknowledged (NAK) MPDUs or the position of a hole in the previous AMPDU frame. A small frame aggregation window size may impact throughput especially at higher transmission rates. In this disclosure a transmission rate may be determined based, at least in part, on a projected frame aggregation window size resulting from a block acknowledgement. The frame aggregation feedback (e.g. block acknowledgement) may be used by a rate control module to determine a transmission rate that optimizes frame aggregation efficiency.

Abstract translation: 在一些WLAN技术中使用MAC层帧聚合和块确认，以通过减少PHY层开销来提高通信信道的效率。 帧聚合窗口大小定义在聚合MPDU（AMPDU）帧中包括多少MAC协议数据单元（MPDU）。 用于后续AMPDU帧的帧聚合窗口通常取决于块确认的特性，例如未确认（NAK）MPDU的数量或先前AMPDU帧中的孔的位置。 小帧聚合窗口大小可能会影响吞吐量，特别是在较高的传输速率下。 在本公开中，可以至少部分地基于由块确认产生的投影帧聚合窗口尺寸来确定传输速率。 帧聚合反馈（例如块确认）可以被速率控制模块用于确定优化帧聚合效率的传输速率。