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    ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS WITH CARRIER SENSE
    24.
    发明申请
    ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS WITH CARRIER SENSE 有权

    公开(公告)号：US20160173243A1

    公开(公告)日：2016-06-16

    申请号：US15053353

    申请日：2016-02-25

    Applicant: MICROSOFT TECHNOLOGY LICENSING, LLC

    Inventor： Amer A. Hassan ,  Adam Sapek ,  Hui Shen ,  Thomas W. Kuehnel ,  Deyun Wu ,  Christian Huitema

    IPC: H04L5/00 ,  H04W74/08

    CPC classification number: H04L5/0007 ,  H04L5/0037 ,  H04L5/0064 ,  H04L5/0094 ,  H04L27/0006 ,  H04W72/04 ,  H04W74/0808

    Abstract: A communication system in which an access point and one or more devices communicating through the access point adaptively apply Orthogonal Frequency Division Multiple Access (OFDMA). The access point may assign orthogonal subcarriers to devices as in conventional OFDMA, but the access point senses activity on the subcarriers and selects subcarriers without activity for assignment. In an alternative approach, a device that is configured for OFDMA communication may receive a channel assignment from a device that does not support OFDMA. The OFDMA-capable device may use only a portion of the subcarriers in the assigned channel, which may be communicated to the non-OFDMA device. During the non-OFDMA device may then ignore unused subcarriers in error detection and correction to avoid incorrectly classifying communications as erroneous. Information about OFDMA capabilities, subcarrier assignments and subcarriers in use may be communicated as information elements in network control communications, such as beacons and probe messages.

    PREDICTING DEGRADATION OF A COMMUNICATION CHANNEL BELOW A THRESHOLD BASED ON DATA TRANSMISSION ERRORS
    25.
    发明申请
    PREDICTING DEGRADATION OF A COMMUNICATION CHANNEL BELOW A THRESHOLD BASED ON DATA TRANSMISSION ERRORS 审中-公开
    基于数据传输错误的下一个通信通道的预测降级

    公开(公告)号：US20150242260A1

    公开(公告)日：2015-08-27

    申请号：US14708174

    申请日：2015-05-08

    Applicant: MICROSOFT TECHNOLOGY LICENSING, LLC

    Inventor： Amer A. Hassan ,  Deyun Wu ,  Christian Huitema ,  Vishesh M. Parikh

    IPC: G06F11/07

    CPC classification number: G06F11/076 ,  G06F11/079 ,  H04L1/0009 ,  H04L1/002 ,  H04L1/20 ,  H04L43/50

    Abstract: Applicants have discovered that error detection techniques, such as Forward Error Correction techniques, may be used to predict the degradation below a certain threshold of an ability to accurately convey information on a communication channel, for example, to predict a failure of the communication channel. In response, transmission and/or reception of information on the channel may be adapted, for example, to prevent the degradation below the threshold, e.g., prevent channel failure. Predicting the degradation may be based, at least in part, on data transmission error information corresponding to one or more blocks of information received on the channel and may include determining an error rate pattern over time. Based on these determinations, the degradation below the threshold may be predicted and the transmission and/or reception adapted. Adapting may include initiating use of a different error encoding scheme and/or using an additional communication channel to convey information.

    Abstract translation: 申请人已经发现，诸如前向纠错技术之类的错误检测技术可用于预测低于在通信信道上精确传送信息的能力的某个阈值以下的劣化，例如，以预测通信信道的故障。 作为响应，信道上的信息的传输和/或接收可以适应于例如防止劣化到阈值以下，例如防止信道故障。 可以至少部分地基于与信道上接收的一个或多个信息块相对应的数据传输错误信息来预测劣化，并且可以包括随时间确定错误率模式。 基于这些确定，可以预测低于阈值的劣化，并且传输和/或接收适应。 适应可以包括启动使用不同的错误编码方案和/或使用附加通信信道来传达信息。

    COGNITIVE MULTI-USER OFDMA
    26.
    发明申请
    COGNITIVE MULTI-USER OFDMA 有权
    认知多用户

    公开(公告)号：US20150188655A1

    公开(公告)日：2015-07-02

    申请号：US14645335

    申请日：2015-03-11

    Applicant: MICROSOFT TECHNOLOGY LICENSING, LLC

    Inventor： Amer A. Hassan ,  Christian Huitema

    IPC: H04J11/00 ,  H04L5/00 ,  H04L27/00

    CPC classification number: H04L27/2613 ,  H04J1/12 ,  H04J1/16 ,  H04J11/003 ,  H04J11/0066 ,  H04L5/0007 ,  H04L5/0016 ,  H04L5/0032 ,  H04L5/0037 ,  H04L5/0039 ,  H04L5/0058 ,  H04L5/0064 ,  H04L5/0073 ,  H04L5/023 ,  H04L27/0006 ,  H04L27/16 ,  H04L27/2627 ,  H04W16/10

    Abstract: A computing device operating according to a frequency division multiplexed protocol in which communication occurs over a signal formed from a plurality of sub-channels selected from anywhere in a frequency spectrum. A computing device may select sub-channels cognitively by using information about sub-channels previously deemed suitable or unsuitable by that computing device or other computing devices. A described technique for determining sub-channel suitability includes analyzing radio frequency energy in the sub-channel to detect signals generated by another computing device or high noise levels. Information may also be used to cognitively select sub-channels to be analyzed, such as by first selecting for analysis previously-used sub-channels.

    Abstract translation: 一种根据频分复用协议操作的计算设备，其中在从频谱中的任何地方选择的多个子信道形成的信号上进行通信。 计算设备可以通过使用关于先前被该计算设备或其他计算设备适合或不适合的子信道的信息来认知地选择子信道。 用于确定子信道适应性的所述技术包括分析子信道中的射频能量以检测由另一计算设备产生的信号或高噪声电平。 也可以使用信息来认知地选择要分析的子信道，例如通过首先选择分析先前使用的子信道。

    GATEWAY ADVERTISEMENT IN A WIRELESS MESH
    28.
    发明申请
    GATEWAY ADVERTISEMENT IN A WIRELESS MESH 有权
    网关广告在无线网中

    公开(公告)号：US20150181512A1

    公开(公告)日：2015-06-25

    申请号：US14641808

    申请日：2015-03-09

    Applicant: MICROSOFT TECHNOLOGY LICENSING, LLC

    Inventor： Thomas W. Kuehnel ,  Alok Manchanda ,  Taroon Mandhana ,  Amer A. Hassan ,  Mukesh Karki ,  Christian Huitema ,  Yusuf Atas

    IPC: H04W48/16 ,  H04W84/18 ,  H04W4/08 ,  H04W8/18

    CPC classification number: H04W48/16 ,  H04L41/00 ,  H04L41/0806 ,  H04L41/0809 ,  H04L41/0816 ,  H04L67/16 ,  H04L69/16 ,  H04L69/161 ,  H04W4/02 ,  H04W4/08 ,  H04W8/18 ,  H04W48/17 ,  H04W80/06 ,  H04W84/18

    Abstract: A computing environment containing a mesh network that is adapted to provide a reliable transport mechanism over which services may be delivered. Nodes of the mesh can automatically select routable addresses without conflicts, which allows nodes of the mesh to be accessed, even as the mesh changes through the addition or deletion of nodes. Also, nodes communicate with a protocol that supports service advertisements. These advertisements can identify mesh nodes that supply services, such as file or print servers, for which devices that have not yet connected to the network may be searching. Advertisements can also identify services to be used by nodes in the network, allowing, for example, anode to select a gateway providing a reliable connection to an external network. The mesh network can be used as a transport for communication using protocols, such as TCP/IP, that generally exhibit poor performance when using unreliable transports.

    Abstract translation: 一种包含网状网络的计算环境，其适于提供可传送服务的可靠传输机制。 网格的节点可以自动选择可路由的地址，而不会产生冲突，这允许网格的节点被访问，即使当网格通过添加或删除节点而改变时。 此外，节点与支持服务广告的协议进行通信。 这些广告可以识别提供诸如文件或打印服务器的服务的网状节点，对于尚未连接到网络的设备可能正在搜索的那些设备。 广告还可以识别要由网络中的节点使用的服务，例如，允许阳极选择提供与外部网络的可靠连接的网关。 网状网络可以用作使用诸如TCP / IP的协议的通信的传输，当使用不可靠的传输时，通常表现出差的性能。

    Gateway advertisement in a wireless mesh
    29.
    发明授权
    Gateway advertisement in a wireless mesh 有权

    公开(公告)号：US10708856B2

    公开(公告)日：2020-07-07

    申请号：US16149182

    申请日：2018-10-02

    Applicant: Microsoft Technology Licensing, LLC

    Inventor： Thomas W. Kuehnel ,  Alok Manchanda ,  Taroon Mandhana ,  Amer A. Hassan ,  Mukesh Karki ,  Christian Huitema ,  Yusuf Atas

    IPC: H04W48/16 ,  H04L12/24 ,  H04W48/00 ,  H04W84/18 ,  H04L29/08 ,  H04L29/06 ,  H04W4/08 ,  H04W8/18 ,  H04W80/06

    Abstract: A computing environment containing a mesh network that is adapted to provide a reliable transport mechanism over which services may be delivered. Nodes of the mesh can automatically select routable addresses without conflicts, which allows nodes of the mesh to be accessed, even as the mesh changes through the addition or deletion of nodes. Also, nodes communicate with a protocol that supports service advertisements. These advertisements can identify mesh nodes that supply services, such as file or print servers, for which devices that have not yet connected to the network may be searching. Advertisements can also identify services to be used by nodes in the network, allowing, for example, a node to select a gateway providing a reliable connection to an external network. The mesh network can be used as a transport for communication using protocols, such as TCP/IP, that generally exhibit poor performance when using unreliable transports.

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