Modeling of residue errors using models that adapt on the basis of link quality indicators
    1.
    发明申请
    Modeling of residue errors using models that adapt on the basis of link quality indicators 审中-公开
    使用适应链路质量指标的模型建立残差误差

    公开(公告)号:US20080037434A1

    公开(公告)日:2008-02-14

    申请号:US11725243

    申请日:2007-03-16

    IPC分类号: G06F11/00

    CPC分类号: H04L1/20

    摘要: A method is provided for adapting models on the basis of link quality indicators. A plurality of statistical models which predict whether a given data bit in a stream of data bits is in error are first defined, where each model includes an indicator of bit errors in the bit stream used to train the model. The method then includes: receiving a data packet at a receiver in a wireless network; determining an indicator of bit errors for the received data packet; and processing the data packet at the receiver using a model from the plurality of models which correlates to the bit error indicator for the data packet.

    摘要翻译: 提供了一种基于链路质量指标来适应模型的方法。 首先定义多个预测数据比特流中的给定数据位是否存在错误的统计模型,其中每个模型包括用于训练模型的比特流中的位错误的指示符。 该方法包括:在无线网络中的接收机处接收数据分组; 确定所接收的数据分组的比特错误的指示符; 以及使用来自所述多个模型的与所述数据分组的位错误指示符相关的模型来处理所述接收机处的所述数据分组。

    Method to utilize physical layer channel state information to improve video quality
    2.
    发明申请
    Method to utilize physical layer channel state information to improve video quality 审中-公开
    利用物理层信道状态信息提高视频质量的方法

    公开(公告)号:US20080025204A1

    公开(公告)日:2008-01-31

    申请号:US11725242

    申请日:2007-03-16

    IPC分类号: G01R31/08

    摘要: A method is provided for improving error recovery of corrupt data packets in a wireless communication system. The method includes: receiving a plurality of incoming data packets over a wireless medium at a receiver; capturing an indicator of bit errors for each of the data packets at a layer of the receiver below an application layer; passing the bit error indicator for each of the data packets to the application layer of the receiver; and performing an error recovery operation in relation to a given data packet at the application layer using the bit error indicator associated with the given data packet.

    摘要翻译: 提供了一种用于改善无线通信系统中损坏的数据分组的错误恢复的方法。 该方法包括:在接收机处通过无线介质接收多个输入数据分组; 捕获在应用层下面的接收器层的每个数据分组的比特错误的指示符; 将每个数据包的位错误指示符传递给接收器的应用层; 以及使用与给定数据分组相关联的位错误指示符,在应用层处执行关于给定数据分组的错误恢复操作。

    Header Estimation To Improve Multimedia Quality Over Wireless Networks
    4.
    发明申请
    Header Estimation To Improve Multimedia Quality Over Wireless Networks 审中-公开
    通过无线网络提高多媒体质量的标题估计

    公开(公告)号:US20090190492A1

    公开(公告)日:2009-07-30

    申请号:US12362055

    申请日:2009-01-29

    IPC分类号: H04L12/26

    CPC分类号: H04L1/0072

    摘要: A method is provided for estimating the header of a data packet in a wireless communication system. The method includes: maintaining a list of data packets received without an error at a receiver; receiving at the receiver a corrupt data packet having errors in its header; computing a likelihood score for the header of the corrupt data packet in relation to each entry in the list of data packets; and selecting an entry having the highest likelihood score as an estimated header for the corrupt data packet.

    摘要翻译: 提供了一种用于估计无线通信系统中的数据分组的报头的方法。 该方法包括:在接收机处保持接收到的数据分组的列表,而不发生错误; 在接收器处接收在其报头中具有错误的损坏数据分组; 计算关于数据分组列表中的每个条目的损坏数据分组的报头的似然分数; 以及选择具有最高似然分数的条目作为损坏的数据分组的估计头部。

    System and Method of Packet Recovery Using Partial Recovery Codes
    5.
    发明申请
    System and Method of Packet Recovery Using Partial Recovery Codes 审中-公开
    使用部分恢复码的数据包恢复的系统和方法

    公开(公告)号:US20070242744A1

    公开(公告)日:2007-10-18

    申请号:US11628344

    申请日:2005-06-29

    IPC分类号: H04L1/00

    摘要: A coding system and method employs a Partial Reed Solomon (PRS) code profile of order s having an s-partition on a set of parity symbols and a (s+1)-partition on a set of message symbols. In other aspects, an adaptive forward error correction scheme keeps block length and transmission rate fixed, while changing an underlying code profile based on received feedback information about a probability of erasure p from a channel.

    摘要翻译: 编码系统和方法使用具有在一组奇偶校验符号上的s分区的顺序s的Partial Reed Solomon(PRS)码配置文件和一组消息符号上的(s + 1) - 分组。 在其他方面,自适应前向纠错方案保持块长度和传输速率固定,同时基于接收到的关于来自信道的擦除概率p的反馈信息来改变底层代码简档。

    Multicast packet video system and hardware
    6.
    发明申请
    Multicast packet video system and hardware 审中-公开
    组播分组视频系统和硬件

    公开(公告)号:US20070147371A1

    公开(公告)日:2007-06-28

    申请号:US11527247

    申请日:2006-09-26

    IPC分类号: H04L12/56

    摘要: A multicast packet video system includes a codec placement module placing codecs in nodes of a multicasting network. In some aspects, the placement includes receiving, at a parent node of the network, feedback from its child nodes indicating a number of the child nodes unable to decode FEC blocks, and placing a codec at the parent node if the number exceeds a threshold. In alternative or additional aspects, the placement includes placing codecs in nodes of a multicasting tree of the network by recursively performing a search of a network topology T to find an optimum node c at which to place a codec in order to obtain a maximum improvement in average video-packet throughput over nodes of the tree as a result of the codec recovering lost video and parity packets and transmitting them downstream.

    摘要翻译: 组播分组视频系统包括将编解码器放置在组播网络的节点中的编解码器放置模块。 在一些方面,所述布置包括在所述网络的父节点处从所述子节点接收指示所述子节点数目不能解码FEC块的反馈,以及如果所述数量超过阈值则在所述父节点处放置编解码器。 在替代或附加方面,该放置包括通过递归地执行网络拓扑T的搜索来将编解码器放置在网络的多播树的节点中,以找到放置编解码器的最佳节点c,以获得最大的改善 由于编解码器恢复丢失的视频和奇偶校验分组并将其传输到下游,因此在树的节点上的平均视频分组吞吐量。