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    SCHEDULING ALGORITHMS FOR IEEE 802.11 MULTI-USER (MU) MULTIPLE-INPUT MULTIPLE-OUTPUT (MIMO) COMMUNICATION SYSTEMS
    21.
    发明申请
    SCHEDULING ALGORITHMS FOR IEEE 802.11 MULTI-USER (MU) MULTIPLE-INPUT MULTIPLE-OUTPUT (MIMO) COMMUNICATION SYSTEMS 有权
    用于IEEE 802.11多用户（MU）多输入多输出（MIMO）通信系统的调度算法

    公开(公告)号：US20130272211A1

    公开(公告)日：2013-10-17

    申请号：US13465522

    申请日：2012-05-07

    申请人： Zhi Quan ,  Simone Merlin ,  Santosh Paul Abraham ,  Sameer Vermani ,  Hemanth Sampath

    发明人： Zhi Quan ,  Simone Merlin ,  Santosh Paul Abraham ,  Sameer Vermani ,  Hemanth Sampath

    IPC分类号： H04W72/04

    CPC分类号： H04B7/0452 ,  H04W72/12 ,  H04W72/1221

    摘要： A method is provided for wirelessly transmitting from a transmitter to one or more receivers within a multi-user (MU) multiple-input and multiple-output (MIMO) communication system. A number of concurrent (spatial) streams are dynamically allocated in a MU-MIMO transmission to each of a plurality of served receivers to maximize total data transmitted on each transmission. Streams are allocated according to a corresponding transmission queue length for each receiver and the number of receive antennas used by each of the served receivers. A transmission timer is started upon sending the transmission. A random backoff counter is also started upon one of either: (a) expiration of the transmission timer or (b) receipt of data at a transmission queue. A new transmission is sent upon expiration of the random backoff counter if the transmission timer has expired. Otherwise, the random backoff counter is restarted one or more times until the transmission timer has expired.

    摘要翻译： 提供了一种用于从多用户（MU）多输入（MIMO）通信系统中的发射机向一个或多个接收机进行无线发射的方法。 在MU-MIMO传输中动态地将多个并行（空间）流分配给多个服务接收机中的每一个，以最大化在每个传输上传输的总数据。 流根据每个接收机的相应传输队列长度和每个被服务接收机使用的接收天线的数量来分配。 传送定时器在发送传输时开始。 以下之一也开始随机退避计数器：（a）传输定时器到期或（b）在传输队列处接收数据。 如果发送定时器已经到期，则在随机退避计数器到期时发送新的传输。 否则，随机退避计数器重新启动一次或多次，直到传输定时器到期。

    Precoding technique for multiuser MIMO based on eigenmode selection and MMSE
    22.
    发明授权
    Precoding technique for multiuser MIMO based on eigenmode selection and MMSE 有权
    基于本征模式选择和MMSE的多用户MIMO的预编码技术

    公开(公告)号：US08306089B2

    公开(公告)日：2012-11-06

    申请号：US12401506

    申请日：2009-03-10

    申请人： Simone Merlin ,  Hemanth Sampath ,  Sameer Vermani ,  Richard van Nee

    发明人： Simone Merlin ,  Hemanth Sampath ,  Sameer Vermani ,  Richard van Nee

    IPC分类号： H04B1/00

    CPC分类号： H04B7/0634 ,  H04B7/0417

    摘要： The present disclosure proposes a method for precoding of transmission signal at an access point of a multiuse system based on eigenmode selection and minimum mean square error (MMSE) processing. The most reliable eigenmodes of every multiple-input multiple-output (MIMO) channel in the system can be selected at each user terminal and corresponding eigenvalues and eigenvectors can be fed back to the access point. The linear MMSE precoding (beamforming) applied at the access point based on the selected eigenmodes may provide an improved transmission capacity performance.

    摘要翻译： 本公开提出了一种用于基于本征模式选择和最小均方误差（MMSE）处理在多用户系统的接入点处对发送信号进行预编码的方法。 可以在每个用户终端选择系统中每个多输入多输出（MIMO）信道的最可靠的本征模，并且可以将对应的特征值和特征向量反馈到接入点。 基于选择的本征模式在接入点应用的线性MMSE预编码（波束成形）可以提供改进的传输容量性能。

    PROTOCOL FOR CHANNEL STATE INFORMATION FEEDBACK
    25.
    发明申请
    PROTOCOL FOR CHANNEL STATE INFORMATION FEEDBACK 有权
    频道状态信息反馈协议

    公开(公告)号：US20120177018A1

    公开(公告)日：2012-07-12

    申请号：US13179651

    申请日：2011-07-11

    申请人： Santosh Paul Abraham ,  Simone Merlin ,  Hemanth Sampath ,  Sameer Vermani

    发明人： Santosh Paul Abraham ,  Simone Merlin ,  Hemanth Sampath ,  Sameer Vermani

    IPC分类号： H04W24/00 ,  H04W84/12

    CPC分类号： H04L1/0027 ,  H04B7/0636 ,  H04L1/1607 ,  H04L5/0057 ,  H04W84/12

    摘要： Certain aspects of the present disclosure relate to a low-overhead method for communicating Channel State Information (CSI) feedback in Very High Throughput (VHT) wireless communications systems. The present disclosure also provides packet formats for Null Data Packet Announcement (NDPA), CSI Poll and CSI feedback. In some cases, the CSI feedback may be too large to be carried in a single Media Access Control (MAC) protocol data unit (MPDU) or a Physical Layer (PHY) protocol data unit (PPDU), and a proposed protocol for CSI feedback segmentation can be then utilized.

    摘要翻译： 本公开的某些方面涉及用于在非常高吞吐量（VHT）无线通信系统中传送信道状态信息（CSI）反馈的低开销方法。 本公开还提供用于空数据分组公告（NDPA），CSI轮询和CSI反馈的分组格式。 在某些情况下，CSI反馈可能太大，无法在单个媒体访问控制（MAC）协议数据单元（MPDU）或物理层（PHY）协议数据单元（PPDU）中携带，并且提出了CSI反馈协议 然后可以利用分割。

    POWER CONTROL FOR WIRELESS LAN STATIONS
    27.
    发明申请
    POWER CONTROL FOR WIRELESS LAN STATIONS 审中-公开
    无线局域网功率控制

    公开(公告)号：US20110077044A1

    公开(公告)日：2011-03-31

    申请号：US12963918

    申请日：2010-12-09

    申请人： Hemanth Sampath ,  Simone Merlin ,  Sameer Vermani

    发明人： Hemanth Sampath ,  Simone Merlin ,  Sameer Vermani

    IPC分类号： H04B7/00

    CPC分类号： H04W52/146 ,  H04B7/0452 ,  H04W52/08 ,  H04W52/241 ,  H04W52/243 ,  H04W52/245 ,  H04W52/247 ,  H04W52/248 ,  H04W52/367 ,  H04W52/50

    摘要： Techniques and apparatus for controlling the transmit power of an uplink (UL) signal from a user terminal in a wireless communications system in an effort to achieve some target characteristic, such as a target carrier-to-interference (C/I) ratio, at an access point (AP) are provided. In this manner, such a user terminal may help avoid or compensate for imbalances in received radio frequency (RF) power between UL signals received from multiple user terminals by the AP. For example, the transmit power at each user terminal may be controlled in an effort to achieve a target post-processing C/I ratio of 28 dB per spatial stream in an effort to reduce large power imbalances and optimize throughput per user terminal The user terminal and the AP may compose part of a multiple-input multiple-output (MIMO) communication system utilizing spatial-division multiple access (SDMA) techniques.

    摘要翻译： 用于在无线通信系统中用于控制来自用户终端的上行链路（UL）信号的发射功率的技术和装置，以努力实现诸如目标载波干扰（C / I）比等目标特性 提供接入点（AP）。 以这种方式，这样的用户终端可以帮助避免或补偿由AP从多个用户终端接收的UL信号之间的接收射频（RF）功率的不平衡。 例如，可以控制每个用户终端处的发射功率，以努力实现每个空间流28dB的目标后处理C / I比，以减少大的功率不平衡并优化每个用户终端的吞吐量用户终端 并且AP可以组合使用空分多址（SDMA）技术的多输入多输出（MIMO）通信系统的一部分。