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1.发明授权公开(公告)号：US08243630B2
公开(公告)日：2012-08-14
申请号：US11253362
申请日：2005-10-19
CPC分类号： H04L12/1827 , H04L12/1854
摘要： Systems and methods are described for implementing an application-level routing protocol for multiparty audio-video conferencing. In one implementation, application-level per-stream routing techniques separately control audio data and video data between conference members hosted on a network. Different audio application-level multicast (ALM) trees are generated by each member, are dynamically updated according to shortest-path-first selection of data delivery paths, and are used to send audio data to the other members of the videoconference. Likewise, different video ALM trees are generated by each member, are dynamically updated according to broadest-path-first selection of data delivery paths, and are used to send video data to the other members of the videoconference. Separate audio and video ALM trees for each member can utilize IP multicast in segments of the network in which IP multicast is enabled.
摘要翻译： 描述了实现用于多方音视频会议的应用级路由协议的系统和方法。 在一个实现中，应用级每流路由技术在网络上托管的会议成员之间单独地控制音频数据和视频数据。 每个成员生成不同的音频应用级组播（ALM）树，根据数据传输路径的最短路径优先选择动态更新，并用于将音频数据发送到视频会议的其他成员。 同样地，每个成员生成不同的视频ALM树，根据数据传送路径的最宽路径优先选择动态更新，并且用于将视频数据发送到视频会议的其他成员。 每个成员的单独的音频和视频ALM树可以在启用了IP多播的网络段中使用IP多播。
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公开(公告)号：US08116235B2
公开(公告)日：2012-02-14
申请号：US12794639
申请日：2010-06-04
CPC分类号： H04N21/2743 , H04L67/104 , H04L67/1072 , H04L67/1085 , H04N7/17318 , H04N21/21 , H04N21/23 , H04N21/4788 , H04N21/632
摘要： Video data from an upload client is received at a hosting node. A request from a download client is received at a bootstrapping node to receive the video data. The download client to receive the video data directly from the hosting node when the hosting node is below a threshold, wherein the threshold is based at least in part on the maximum number of download clients the hosting node can stream to simultaneously. The download client to receive the video data from peers in a peer-to-peer overlay when the hosting node above the threshold.
摘要翻译： 在主机节点接收来自上传客户端的视频数据。 在自举节点处接收来自下载客户端的请求以接收视频数据。 所述下载客户端在所述主机节点低于阈值时直接从所述主机节点接收所述视频数据，其中所述阈值至少部分地基于所述主机节点可以同时流式传输的下载客户端的最大数目。 当主机节点高于阈值时，下载客户端从点对点覆盖中的对等端接收视频数据。
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公开(公告)号：US07778273B2
公开(公告)日：2010-08-17
申请号：US11255797
申请日：2005-10-21
IPC分类号： H04J3/16
CPC分类号： H04L45/16 , H04L12/1827 , H04L12/185 , H04L12/1854 , H04L45/02 , H04L47/15 , H04L47/24
摘要： An application-level multicasting architecture that enables multiple nodes to interact in real time with data packets that are routed based on information about the connection states between the nodes is provided. Each node shares their connection states with other nodes in the same interactive session. The data packets may be routed in the application level using multiple packet transport protocols that are available on the sending node. A particular transport protocol may be selected based on a Quality of Service (QoS) requirement of the data packet. Nodes in the interactive session may relay data packet to other nodes according to a routing map that is created based on the connection states. The application-level multicasting architecture may be implemented for any multiparty interactive application, such as an application for videoconferencing, multiplayer games, distance learning, virtual meeting, and voice communication.
摘要翻译： 提供了一种应用级组播结构，其使得多个节点能够实时地与基于关于节点之间的连接状态的信息被路由的数据分组进行交互。 每个节点在同一个交互会话中与其他节点共享它们的连接状态。 可以使用在发送节点上可用的多个分组传输协议在应用层级路由数据分组。 可以基于数据分组的服务质量（QoS）要求来选择特定传输协议。 交互会话中的节点可以根据基于连接状态创建的路由映射将数据包中继到其他节点。 可以为任何多方交互应用（例如用于视频会议，多人游戏，远程学习，虚拟会议和语音通信的应用）实施应用级组播结构。
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公开(公告)号：US20090285148A1
公开(公告)日：2009-11-19
申请号：US12122749
申请日：2008-05-19
IPC分类号： H04B7/14
CPC分类号： H04B7/15521
摘要： Described herein is technology for, among other things, natural network coding in a wireless mesh network. The technology involves wireless mesh network systems, methods and devices based on the natural network coding. By encoding signals in their natural forms using their channel strengths, more efficient transmission of signals is possible in the wireless mesh network.
摘要翻译： 这里描述的是用于无线网状网络中的自然网络编码的技术。 该技术涉及无线网状网络系统，基于自然网络编码的方法和设备。 通过使用其信道强度对其天然形式的信号进行编码，在无线网状网络中可以进行更有效的信号传输。
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公开(公告)号：US20070217448A1
公开(公告)日：2007-09-20
申请号：US11276848
申请日：2006-03-16
IPC分类号： H04J3/22
CPC分类号： H04L47/10 , H04L47/115 , H04L47/283
摘要： Systems and methods for estimating available bandwidth with multiple overloading streams are described. In one aspect, a set of packets are communicated by a probing sender to a receiver. The packets are sent at multiple sending rates. At least two of the sending rates result in multiple overloading streams of packets being sent to the receiver. The probing sender receives a set of queuing delay information from the receiver. The queuing delay information is based one-way delay measurements corresponding to receipt by the receiver of at least two pairs of successive packets of the packets. The probing sender estimates available bandwidth of the network based on the received queuing delay information and multiple sending rates associated with the multiple overloading streams of packets.
摘要翻译： 描述了使用多个重载流来估计可用带宽的系统和方法。 在一个方面，一组分组由探测发送者传送到接收机。 数据包以多个发送速率发送。 发送速率中的至少两个导致发送到接收机的数据包的多个重载流。 探测发送者从接收者接收一组排队延迟信息。 排队延迟信息是对应于接收机对分组的至少两对连续分组的接收的基于单向延迟测量的。 探测发送者根据接收到的排队延迟信息和与多个重载数据包流相关联的多个发送速率来估计网络的可用带宽。
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公开(公告)号：US20070091918A1
公开(公告)日：2007-04-26
申请号：US11255797
申请日：2005-10-21
IPC分类号： H04J3/22
CPC分类号： H04L45/16 , H04L12/1827 , H04L12/185 , H04L12/1854 , H04L45/02 , H04L47/15 , H04L47/24
摘要： An application-level multicasting architecture that enables multiple nodes to interact in real time with data packets that are routed based on information about the connection states between the nodes is provided. Each node shares their connection states with other nodes in the same interactive session. The data packets may be routed in the application level using multiple packet transport protocols that are available on the sending node. A particular transport protocol may be selected based on a Quality of Service (QoS) requirement of the data packet. Nodes in the interactive session may relay data packet to other nodes according to a routing map that is created based on the connection states. The application-level multicasting architecture may be implemented for any multiparty interactive application, such as an application for videoconferencing, multiplayer games, distance learning, virtual meeting, and voice communication.
摘要翻译： 提供了一种应用级组播结构，其使得多个节点能够实时地与基于关于节点之间的连接状态的信息被路由的数据分组进行交互。 每个节点在同一个交互会话中与其他节点共享它们的连接状态。 可以使用在发送节点上可用的多个分组传输协议在应用层级路由数据分组。 可以基于数据分组的服务质量（QoS）要求来选择特定传输协议。 交互会话中的节点可以根据基于连接状态创建的路由映射将数据包中继到其他节点。 可以为任何多方交互应用（例如用于视频会议，多人游戏，远程学习，虚拟会议和语音通信的应用）实施应用级组播结构。
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公开(公告)号：US08305899B2
公开(公告)日：2012-11-06
申请号：US12127838
申请日：2008-05-28
申请人： Chong Luo , Wei Pu , Changwen Chen , Feng Wu
发明人： Chong Luo , Wei Pu , Changwen Chen , Feng Wu
CPC分类号： H04W28/12 , H04L47/10 , H04L47/12 , H04L47/14 , H04L47/17 , H04L47/25 , H04L47/266 , H04L47/29 , H04L47/30 , H04L47/33 , H04L47/35
摘要： A network can include a number of nodes that link a source node to a sink node. When a first node in a network sends a packet to its downstream node, this information is also received at its upstream node. In response to learning that the first node has sent a packet, the upstream node sends another packet to the first node. In essence, a pull-based transmission approach is used to mitigate congestion and address the funneling effect in data transmission networks such as wireless video sensor networks.
摘要翻译： 网络可以包括将源节点链接到汇聚节点的多个节点。 当网络中的第一个节点向其下游节点发送数据包时，也会在其上游节点接收到该信息。 响应于学习第一节点已经发送分组，上游节点向第一节点发送另一分组。 实质上，基于拉式传输方法用于减轻拥塞并解决数据传输网络（如无线视频传感器网络）中的漏斗效应。
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公开(公告)号：US08280671B2
公开(公告)日：2012-10-02
申请号：US12696415
申请日：2010-01-29
IPC分类号： G01R31/00
CPC分类号： G06F15/16
摘要： Techniques for data gathering in large-scale wireless sensor networks are described. A data collection device receives aggregate data from at least one sensor node of a group of N sensor nodes. The aggregate data includes M weighted sums. Each of the M weighted sums includes a respective sum of N products each of which being a product of a respective coefficient and a sensor reading from a respective one of the N sensor nodes. M and N are positive integers and M is less than N. Computation is performed on the aggregate data to recover sensor readings from the N sensor nodes.
摘要翻译： 描述了在大规模无线传感器网络中收集数据的技术。 数据收集装置从一组N个传感器节点的至少一个传感器节点接收聚合数据。 聚合数据包括M个加权和。 M个加权和中的每一个包括N个乘积的相应和，每个N个乘积是相应系数的乘积和从N个传感器节点中的相应一个传感器节点的传感器读数。 M和N是正整数，M小于N.对聚合数据进行计算，以从N个传感器节点恢复传感器读数。
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公开(公告)号：US08204086B2
公开(公告)日：2012-06-19
申请号：US12122749
申请日：2008-05-19
IPC分类号： H04J3/02
CPC分类号： H04B7/15521
摘要： Described herein is technology for, among other things, natural network coding in a wireless mesh network. The technology involves wireless mesh network systems, methods and devices based on the natural network coding. By encoding signals in their natural forms using their channel strengths, more efficient transmission of signals is possible in the wireless mesh network.
摘要翻译： 这里描述的是用于无线网状网络中的自然网络编码的技术。 该技术涉及无线网状网络系统，基于自然网络编码的方法和设备。 通过使用其信道强度对其天然形式的信号进行编码，在无线网状网络中可以进行更有效的信号传输。
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公开(公告)号：US20120121030A1
公开(公告)日：2012-05-17
申请号：US12945741
申请日：2010-11-12
申请人： Chong Luo , Kun Tan , Feng Wu , Hao Cui , Chang Wen Chen
发明人： Chong Luo , Kun Tan , Feng Wu , Hao Cui , Chang Wen Chen
IPC分类号： H04L5/12
CPC分类号： H04L27/3416 , H04L1/005 , H04L1/1812
摘要： A projection code is applied to encode symbols as weighted arithmetic sums of approximately random subsets of binary source bits. Pairs of the symbols are combined to form constellation points, which are sequentially mapped through a constellation to modulate a data signal.
摘要翻译： 应用投影码将符号编码为二进制源比特的近似随机子集的加权算术和。 这些符号的组合被组合以形成星座点，其通过星座顺序映射以调制数据信号。
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