System and method for link adaptation in DIDO multicarrier systems

    公开(公告)号:US10886979B2

    公开(公告)日:2021-01-05

    申请号:US12802975

    申请日:2010-06-16

    Abstract: A system and machine-implemented method are described for communicating with a plurality of distributed-input-distributed-output (DIDO) clients. For example, a method according to one embodiment comprises: determining channel state information (CSI) defining a channel state between each of a first plurality of DIDO antennas and each of the DIDO clients; using the CSI to determine distributed-input-distributed-output (DIDO) precoding weights for each of the channels between each of the first plurality of DIDO antennas and the antennas of each of the DIDO clients; using the CSI and DIDO precoding weights to determine link quality metrics defining link quality between each of the first plurality of DIDO antennas and the antennas of each of the DIDO clients; using the link-quality metrics, to determine modulation coding schemes (MCSs) for different DIDO clients; and transmitting precoded data streams from each of the first plurality of DIDO antennas to each of the individual DIDO clients using the determined MCSs for those clients.

    Systems and methods for wireless backhaul in distributed-input distributed-output wireless systems
    114.
    发明授权
    Systems and methods for wireless backhaul in distributed-input distributed-output wireless systems 有权
    分布式输入分布式输出无线系统中无线回程的系统和方法

    公开(公告)号:US08989155B2

    公开(公告)日:2015-03-24

    申请号:US13633702

    申请日:2012-10-02

    CPC classification number: H04B7/022 H04B7/0452 H04B7/066

    Abstract: Systems and methods are described for wireless backhaul in a multiple antenna system (MAS) with multi-user (MU) transmissions (“MU-MAS”). For example, a multiuser (MU) multiple antenna system (MAS) of one embodiment comprises: one or more centralized units communicatively coupled to multiple distributed transceiver stations via a network; the network consisting of wireline or wireless links or a combination of both, employed as a backhaul communication channel; the centralized unit transforming the N streams of information into M streams of bits, each stream of bits being a combination of some or all N streams of information; the M streams of bits being sent over the network to the distributed transceiver stations; the distributed transceiver stations simultaneously sending the streams of bits over wireless links to at least one client device such that at least one client device receives at least one of the original N streams of information.

    Abstract translation: 描述了具有多用户(MU)传输(MU-MAS)的多天线系统(MAS)中的无线回程的系统和方法。 例如,一个实施例的多用户(MU)多天线系统(MAS)包括:经由网络通信地耦合到多个分布式收发机站的一个或多个集中式单元; 由有线或无线链路组成的网络或两者的组合,用作回程通信信道; 集中单元将N个信息流变换成M个比特流,每个比特流是一些或全部N个信息流的组合; M个比特流通过网络发送到分布式收发台; 所述分布式收发站同时通过无线链路将比特流发送到至少一个客户端设备,使得至少一个客户端设备接收原始N个信息流中的至少一个。

    System and method for compressing streaming interactive video
    116.
    发明授权
    System and method for compressing streaming interactive video 有权
    用于压缩流交互式视频的系统和方法

    公开(公告)号:US08893207B2

    公开(公告)日:2014-11-18

    申请号:US11999461

    申请日:2007-12-05

    Abstract: A server center for hosting low-latency streaming interactive audio/video (NV) includes a plurality of servers that run one or more applications an inbound routing network that receives packet streams from users via a first network interface and routes the packets to one or more of the servers. The packet streams include user control input. One or more of the servers are operable to compute A/V data responsive to the user control input. A compression unit is coupled to receive the A/V data from the one or more of the servers and output compressed A/V data therefrom. An output routing network that routes the compressed A/V data to each of the users over a corresponding communication channel via a second interface, the compression unit is operable to modify a compression rate responsive to current characteristics of the corresponding communication channel for each user so as to optimize performance of the one or more applications.

    Abstract translation: 用于托管低延迟流交互式音频/视频(NV)的服务器中心包括运行一个或多个应用的​​多个服务器,入站路由网络经由第一网络接口从用户接收分组流,并将分组路由到一个或多个 的服务器。 分组流包括用户控制输入。 一个或多个服务器可操作以响应于用户控制输入来计算A / V数据。 压缩单元被耦合以从一个或多个服务器接收A / V数据并从其输出压缩的A / V数据。 一种输出路由网络,其经由第二接口将压缩的A / V数据路由到相应通信信道上的每个用户,所述压缩单元可操作以响应于每个用户的相应通信信道的当前特性来修改压缩率,因此 以优化一个或多个应用程序的性能。

    System and Method for Selecting a Video Encoding Format Based on Feedback Data
    118.
    发明申请
    System and Method for Selecting a Video Encoding Format Based on Feedback Data 有权
    基于反馈数据选择视频编码格式的系统和方法

    公开(公告)号:US20140226713A1

    公开(公告)日:2014-08-14

    申请号:US14253357

    申请日:2014-04-15

    Abstract: A computer-implemented system and method for performing video compression are described. For example, a method according to one embodiment comprises: encoding a plurality of video frames or portions thereof according to a first encoding format; transmitting the plurality of encoded video frames or portions to a client device; receiving feedback information from the client device, the feedback information usable to determine whether data contained in the video frames or portions has been successfully received and/or decoded; in response to detecting that one or more video frames or portions thereof have not been successfully received and/or decoded, determining a number of video frames or portions thereof which have not been successfully received and/or decoded and: (1) if the number of video frames or portions thereof which have not been successfully received and/or decoded is above a specified threshold, then encoding a new video frame or portion thereof according to a second encoding format, the second encoding format comprising a format which is not dependent on previously-transmitted video frames or portions thereof; or (2) if the number of video frames or portions thereof which have not been successfully received and/or decoded is below a specified threshold, then encoding a new video frame or portion thereof according to the first encoding format, the new video frame encoded to be dependent on a last known successfully received video frame or portion thereof; and transmitting the new video frame or portion thereof to the client device.

    Abstract translation: 描述了用于执行视频压缩的计算机实现的系统和方法。 例如,根据一个实施例的方法包括:根据第一编码格式对多个视频帧或其部分进行编码; 将多个编码视频帧或部分发送到客户端设备; 从所述客户端设备接收反馈信息,所述反馈信息可用于确定包含在所述视频帧或部分中的数据是否已被成功接收和/或解码; 响应于检测到一个或多个视频帧或其部分未被成功接收和/或解码,确定尚未成功接收和/或解码的视频帧或其部分的数量,并且:(1)如果该数字 尚未成功接收和/或解码的视频帧或其部分高于规定的阈值,然后根据第二编码格式对新的视频帧或其部分进行编码,第二编码格式包括不依赖于 先前传输的视频帧或其部分; 或(2)如果没有成功接收和/或解码的视频帧或其部分的数量低于指定的阈值,则根据第一编码格式对新的视频帧或其部分进行编码,编码的新的视频帧 取决于最后已知的成功接收的视频帧或其部分; 以及将新的视频帧或其一部分发送到客户端设备。

    System and method for coordinating between multiple telephony channels
    119.
    发明授权
    System and method for coordinating between multiple telephony channels 有权
    用于协调多个电话信道的系统和方法

    公开(公告)号:US08634409B2

    公开(公告)日:2014-01-21

    申请号:US12749146

    申请日:2010-03-29

    CPC classification number: H04L65/1026 H04M7/0057 H04M7/0069

    Abstract: A system comprising: an IP telephony interface communicatively coupled to an IP telephony service; a secondary telephony interface communicatively coupled to a secondary telephony service; and a telephone connection module to select between the IP telephony service and the secondary telephone service based on one or more specified telephony connection conditions.

    Abstract translation: 一种系统,包括:通信地耦合到IP电话服务的IP电话接口; 通信地耦合到辅助电话服务的辅助电话接口; 以及电话连接模块,用于基于一个或多个指定的电话连接条件在IP电话服务和辅助电话服务之间进行选择。

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