公开(公告)号：US07558875B2

公开(公告)日：2009-07-07

申请号：US10662574

申请日：2003-09-15

申请人： Xin Yan Zhang ,  Qian Zhang ,  Yongqiang Xiong ,  Wenwu Zhu

发明人： Xin Yan Zhang ,  Qian Zhang ,  Yongqiang Xiong ,  Wenwu Zhu

IPC分类号： G06F15/173

CPC分类号： H04L67/104 ,  H04L41/0893 ,  H04L41/12 ,  H04L43/00 ,  H04L43/50 ,  H04L45/04 ,  H04L45/121 ,  H04L45/122 ,  H04L45/46 ,  H04L67/1046 ,  H04L67/1059 ,  H04L67/1072 ,  H04L69/329

摘要： Overlay network peers may be grouped so that each peer in a peer group has a similar transport network proximity measure with respect to the peers in other peer groups. A first set of transport network distances may include distances between a peer group and peer group neighbors of the peer group. A second set of distances may include distances between a peer and the peer group neighbors of the peer group. The peer may decide to join the peer group if the first set of distances is near to the second set. A first peer group may query a second peer group for the second peer group's neighboring peer groups. The distance between the first peer group and each of the second peer group's neighbors may be measured. Overlay network connections may be established between the first peer group and the closest of the second peer group's neighbors.

摘要翻译： 覆盖网络对等体可以被分组，使得对等体组中的每个对等体相对于其他对等体组中的对等体具有相似的传输网络邻近度量。 第一组传输网络距离可以包括对等体组和对等体组的对等体组邻居之间的距离。 第二组距离可以包括对等体组的对等体组邻居之间的距离。 如果第一组距离接近第二组，则对等体可以决定加入对等体组。 第一对等体组可以查询第二对等体组的第二对等体组的相邻对等体组。 可以测量第一对等组与每个第二对等组的邻居之间的距离。 覆盖网络连接可以在第一对等体组和第二对等体组的邻居中最接近之间建立。

公开(公告)号：US07698460B2

公开(公告)日：2010-04-13

申请号：US11421991

申请日：2006-06-02

申请人： Qian Zhang ,  Wenwu Zhu ,  XinYan Zhang ,  Yongqiang Xiong

发明人： Qian Zhang ,  Wenwu Zhu ,  XinYan Zhang ,  Yongqiang Xiong

IPC分类号： G06F15/16

CPC分类号： H04L61/2567 ,  H04L29/12509 ,  H04L43/0852 ,  H04L43/50 ,  H04L47/10

摘要： A peer-to-peer (P2P) probing/network quality of service (QoS) analysis system utilizes a UDP-based probing tool for determining latency, bandwidth, and packet loss ratio between peers in a network. The probing tool enables network QoS probing between peers that connect through a network address translator. The list of peers to probe is provided by a connection server based on prior probe results and an estimate of the network condition. The list includes those peers which are predicted to have the best QoS with the requesting peer. Once the list is obtained, the requesting peer probes the actual QoS to each peer on the list, and returns these results to the connection server. P2P probing in parallel using a modified packet-pair scheme is utilized. If anomalous results are obtained, a hop-by-hop probing scheme is utilized to determine the QoS of each link. In such a scheme, differential destination measurement is utilized.

摘要翻译： 对等（P2P）探测/网络服务质量（QoS）分析系统利用基于UDP的探测工具来确定网络中对等体之间的延迟，带宽和丢包率。 探测工具可以在通过网络地址转换器连接的对等体之间实现网络QoS探测。 探测对等体的列表由连接服务器根据先前的探测结果和网络条件的估计提供。 该列表包括被预测与请求对等体具有最佳QoS的那些对等体。 一旦获得了列表，请求对等体将实际的QoS探测到列表上的每个对等体，并将这些结果返回给连接服务器。 利用改进的分组对方案并行的P2P探测。 如果获得异常结果，则使用逐跳探测方案来确定每个链路的QoS。 在这种方案中，利用差分目的地测量。

公开(公告)号：US20060209701A1

公开(公告)日：2006-09-21

申请号：US11421991

申请日：2006-06-02

申请人： Qian Zhang ,  Wenwu Zhu ,  XinYan Zhang ,  YongQiang Xiong

发明人： Qian Zhang ,  Wenwu Zhu ,  XinYan Zhang ,  YongQiang Xiong

IPC分类号： H04J3/14 ,  H04J1/16 ,  H04B1/44

CPC分类号： H04L61/2567 ,  H04L29/12509 ,  H04L43/0852 ,  H04L43/50 ,  H04L47/10

摘要： A peer-to-peer (P2P) probing/network quality of service (QoS) analysis system utilizes a UDP-based probing tool for determining latency, bandwidth, and packet loss ratio between peers in a network. The probing tool enables network QoS probing between peers that connect through a network address translator. The list of peers to probe is provided by a connection server based on prior probe results and an estimate of the network condition. The list includes those peers which are predicted to have the best QoS with the requesting peer. Once the list is obtained, the requesting peer probes the actual QoS to each peer on the list, and returns these results to the connection server. P2P probing in parallel using a modified packet-pair scheme is utilized. If anomalous results are obtained, a hop-by-hop probing scheme is utilized to determine the QoS of each link. In such a scheme, differential destination measurement is utilized.

摘要翻译： 对等（P2P）探测/网络服务质量（QoS）分析系统利用基于UDP的探测工具来确定网络中对等体之间的延迟，带宽和丢包率。 探测工具可以在通过网络地址转换器连接的对等体之间实现网络QoS探测。 探测对等体的列表由连接服务器根据先前的探测结果和网络条件的估计提供。 该列表包括被预测与请求对等体具有最佳QoS的那些对等体。 一旦获得了列表，请求对等体将实际的QoS探测到列表上的每个对等体，并将这些结果返回给连接服务器。 利用改进的分组对方案并行的P2P探测。 如果获得异常结果，则使用逐跳探测方案来确定每个链路的QoS。 在这种方案中，利用差分目的地测量。

公开(公告)号：US07133368B2

公开(公告)日：2006-11-07

申请号：US10061462

申请日：2002-02-01

申请人： Qian Zhang ,  Wenwu Zhu ,  XinYan Zhang ,  YongQiang Xiong

发明人： Qian Zhang ,  Wenwu Zhu ,  XinYan Zhang ,  YongQiang Xiong

IPC分类号： G06F11/00

CPC分类号： H04L61/2567 ,  H04L29/12509 ,  H04L43/0852 ,  H04L43/50 ,  H04L47/10

摘要： A peer-to-peer (P2P) probing/network quality of service (QoS) analysis system utilizes a UDP-based probing tool for determining latency, bandwidth, and packet loss ratio between peers in a network. The probing tool enables network QoS probing between peers that connect through a network address translator. The list of peers to probe is provided by a connection server based on prior probe results and an estimate of the network condition. The list includes those peers which are predicted to have the best QoS with the requesting peer. Once the list is obtained, the requesting peer probes the actual QoS to each peer on the list, and returns these results to the connection server. P2P probing in parallel using a modified packet-pair scheme is utilized. If anomalous results are obtained, a hop-by-hop probing scheme is utilized to determine the QoS of each link. In such a scheme, differential destination measurement is utilized.

摘要翻译： 对等（P2P）探测/网络服务质量（QoS）分析系统利用基于UDP的探测工具来确定网络中对等体之间的延迟，带宽和丢包率。 探测工具可以在通过网络地址转换器连接的对等体之间实现网络QoS探测。 探测对等体的列表由连接服务器根据先前的探测结果和网络条件的估计提供。 该列表包括被预测与请求对等体具有最佳QoS的那些对等体。 一旦获得了列表，请求对等体将实际的QoS探测到列表上的每个对等体，并将这些结果返回给连接服务器。 利用改进的分组对方案并行的P2P探测。 如果获得异常结果，则使用逐跳探测方案来确定每个链路的QoS。 在这种方案中，利用差分目的地测量。

公开(公告)号：US20050060406A1

公开(公告)日：2005-03-17

申请号：US10662574

申请日：2003-09-15

申请人： Xin Zhang ,  Qian Zhang ,  Yongqiang Xiong ,  Wenwu Zhu

发明人： Xin Zhang ,  Qian Zhang ,  Yongqiang Xiong ,  Wenwu Zhu

IPC分类号： H04L12/28 ,  H04L12/24 ,  H04L12/26 ,  H04L12/56 ,  H04L29/08 ,  G06F15/173

CPC分类号： H04L67/104 ,  H04L41/0893 ,  H04L41/12 ,  H04L43/00 ,  H04L43/50 ,  H04L45/04 ,  H04L45/121 ,  H04L45/122 ,  H04L45/46 ,  H04L67/1046 ,  H04L67/1059 ,  H04L67/1072 ,  H04L69/329

摘要： Overlay network peers may be grouped so that each peer in a peer group has a similar transport network proximity measure with respect to the peers in other peer groups. A first set of transport network distances may include distances between a peer group and peer group neighbors of the peer group. A second set of distances may include distances between a peer and the peer group neighbors of the peer group. The peer may decide to join the peer group if the first set of distances is near to the second set. A first peer group may query a second peer group for the second peer group's neighboring peer groups. The distance between the first peer group and each of the second peer group's neighbors may be measured. Overlay network connections may be established between the first peer group and the closest of the second peer group's neighbors.

摘要翻译： 覆盖网络对等体可以被分组，使得对等体组中的每个对等体相对于其他对等体组中的对等体具有相似的传输网络邻近度量。 第一组传输网络距离可以包括对等体组和对等体组的对等体组邻居之间的距离。 第二组距离可以包括对等体组的对等体组邻居之间的距离。 如果第一组距离接近第二组，则对等体可以决定加入对等体组。 第一对等体组可以查询第二对等体组的第二对等体组的相邻对等体组。 可以测量第一对等组与每个第二对等组的邻居之间的距离。 覆盖网络连接可以在第一对等体组和第二对等体组的邻居中最接近之间建立。

公开(公告)号：US20070002804A1

公开(公告)日：2007-01-04

申请号：US11170712

申请日：2005-06-29

申请人： Yongqiang Xiong ,  Qian Zhang ,  Shouyi Yin

发明人： Yongqiang Xiong ,  Qian Zhang ,  Shouyi Yin

IPC分类号： H04B7/216

CPC分类号： H04W40/18 ,  H04L45/122 ,  H04L45/3065 ,  H04L45/38 ,  H04W40/12 ,  Y02D70/142 ,  Y02D70/22 ,  Y02D70/23 ,  Y02D70/30 ,  Y02D70/34

摘要： The routing traffic in wireless networks is performed in accordance with a routing metric. The routing metric can reflect the effects of future self-traffic of a forthcoming communication flow. In a described implementation, a routing decision is made for a forthcoming communication flow that is to propagate over multiple nodes of a multi-hop wireless network. The routing decision is based on at least one predicted effect on the wireless network from self-traffic of the forthcoming communication flow.

摘要翻译： 根据路由度量来执行无线网络中的路由业务。 路由度量可以反映即将到来的通信流的未来自身流量的影响。 在所描述的实施方式中，对待通过多跳无线网络的多个节点传播的即将到来的通信流进行路由决定。 路由决定基于来自即将到来的通信流的自身流量对无线网络的至少一个预测的影响。

公开(公告)号：US07660285B2

公开(公告)日：2010-02-09

申请号：US11170712

申请日：2005-06-29

申请人： Yongqiang Xiong ,  Qian Zhang ,  Shouyi Yin

发明人： Yongqiang Xiong ,  Qian Zhang ,  Shouyi Yin

IPC分类号： H04W4/00

CPC分类号： H04W40/18 ,  H04L45/122 ,  H04L45/3065 ,  H04L45/38 ,  H04W40/12 ,  Y02D70/142 ,  Y02D70/22 ,  Y02D70/23 ,  Y02D70/30 ,  Y02D70/34

摘要： The routing of traffic in wireless networks is performed in accordance with a routing metric. The routing metric can reflect the effects of future self-traffic of a forthcoming communication flow. In a described implementation, a routing decision is made for a forthcoming communication flow that is to propagate over multiple nodes of a multi-hop wireless network. The routing decision is based on at least one predicted effect on the wireless network from self-traffic of the forthcoming communication flow.

摘要翻译： 根据路由度量来执行无线网络中的业务路由。 路由度量可以反映即将到来的通信流的未来自身流量的影响。 在所描述的实施方式中，对待通过多跳无线网络的多个节点传播的即将到来的通信流进行路由决定。 路由决定基于来自即将到来的通信流的自身流量对无线网络的至少一个预测的影响。

公开(公告)号：US07433814B2

公开(公告)日：2008-10-07

申请号：US10955993

申请日：2004-09-30

申请人： Yunxin Liu ,  Zheng Ni ,  Jian Wang ,  Qian Zhang ,  Wenwu Zhu

发明人： Yunxin Liu ,  Zheng Ni ,  Jian Wang ,  Qian Zhang ,  Wenwu Zhu

IPC分类号： G06F9/455

CPC分类号： H04L41/145 ,  G06F9/45537

摘要： A network emulator provides both per-connection and non-connection-based emulation. The emulator includes a host computer, and a kernel-mode emulator driver and user-mode application component running on the host computer. The application component supplies configuration parameters to the driver. The driver includes a packet filter list that filters a captured packet, a virtual network link that receives the packet from the packet filter list, a link group list that applies an emulation procedure to the packet, a timer management component that manages a timer associated with the emulation procedure, and a packet dispatcher component that sends out the packet. A connection pool component facilitates per-connection emulation.

摘要翻译： 网络仿真器提供基于每个连接和非连接的仿真。 该仿真器包括主计算机，以及在主机上运行的内核模式仿真器驱动程序和用户模式应用程序组件。 应用程序组件向驱动程序提供配置参数。 驱动器包括过滤捕获的分组的分组过滤器列表，从分组过滤器列表接收分组的虚拟网络链路，对分组应用仿真过程的链路组列表，管理与 仿真过程，以及发送数据包的数据包调度程序组件。 连接池组件便于每个连接仿真。

公开(公告)号：US07158539B2

公开(公告)日：2007-01-02

申请号：US10125280

申请日：2002-04-16

申请人： Qian Zhang ,  Jianping Zhou ,  Wenwu Zhu

发明人： Qian Zhang ,  Jianping Zhou ,  Wenwu Zhu

IPC分类号： H04J3/24

CPC分类号： H04L65/607 ,  H04L29/06027

摘要： A unique sync mark is applied by an encoder to the beginning of each frame in a data packet of a Windows Media™ Audio bitstream by a Microsoft® Windows Media™ Audio (WMA) codec. The WMA decoder handles errors at the frame level for each data packet. When a frame in a data packet of a WMA file is corrupted, the decoder can continue to decode the next frame by searching for the next sync mark at the beginning of the next frame. Accordingly, error propagation is confined to a single frame and the decoder can simultaneously handle bit errors and packet erasures when decompressing a received audio bitstream.

摘要翻译： 唯一的同步标记由编码器应用于Windows Media TM音频（WMA）编解码器的Windows Media TM音频比特流的数据分组中每帧的开头。 WMA解码器处理每个数据包的帧级别的错误。 当WMA文件的数据分组中的帧被破坏时，解码器可以通过在下一帧开始搜索下一个同步标记来继续解码下一帧。 因此，误差传播局限于单个帧，并且当解压缩所接收的音频比特流时，解码器可以同时处理比特错误和分组擦除。

公开(公告)号：US20060156201A1

公开(公告)日：2006-07-13

申请号：US11277265

申请日：2006-03-23

申请人： Qian Zhang ,  Ya-Qin Zhang ,  Wenwu Zhu

发明人： Qian Zhang ,  Ya-Qin Zhang ,  Wenwu Zhu

IPC分类号： H03M13/00

CPC分类号： H04L47/822 ,  H04L47/15 ,  H04L47/193 ,  H04L47/2416 ,  H04L47/263 ,  H04L47/28 ,  H04L47/70 ,  H04L47/762 ,  H04L47/801 ,  H04N7/173 ,  H04N21/234318 ,  H04N21/234354 ,  H04N21/2381 ,  H04N21/2402 ,  H04N21/2662 ,  H04N21/4381 ,  H04N21/44209 ,  H04N21/64322 ,  H04N21/6582

摘要： A resource allocation of multiple compressed AV streams delivered over the Internet is disclosed that achieves end-to-end optimal quality through a multimedia streaming TCP-friendly transport (MSTFP) protocol that adaptively estimates the network bandwidth while smoothing the sending rate. Resources allocated dynamically according to a media encoding distortion and network degradation algorithm. A scheme is also disclosed for dynamically estimating the available network bandwidth for streaming of objects, such as MPEG4 multiple video objects, in conjunction with the MSTFP protocol. The scheme can account for packet-loss rates to minimize end-to-end distortion for media delivery.

摘要翻译： 公开了通过互联网传送的多个压缩AV流的资源分配，其通过自适应地估计网络带宽同时平滑发送速率的多媒体流TCP协议传输（MSTFP）协议来实现端到端的最佳质量。 根据媒体编码失真和网络退化算法动态分配资源。 还公开了一种结合MSTFP协议来动态地估计诸如MPEG4多视频对象的对象流的可用网络带宽的方案。 该方案可以解决丢包率，以尽量减少媒体传输的端到端失真。