公开(公告)号：US20110099226A1

公开(公告)日：2011-04-28

申请号：US13001574

申请日：2010-03-17

申请人： Yongqiang Liu ,  Yong Xia ,  Yan Hu ,  Yanlin Luo

发明人： Yongqiang Liu ,  Yong Xia ,  Yan Hu ,  Yanlin Luo

IPC分类号： G06F15/173

CPC分类号： H04L67/104 ,  H04L67/1063 ,  H04L67/1065 ,  H04L67/2814

摘要： Disclosed is a method for requesting for location information of resources on a P2P network, user node and server for the same, which allow a user to get network resources quickly. The popular files and the unpopular files are managed separately. The metadata of popular files are stored a plurality of SN based on respective areas, while the metadata of the unpopular files are stored and queried in a centralized manner. A function of redirecting a request message is added into the SN so as to inform the user the existence of a SN-R. Meanwhile, in order to improve query efficiency and avoid repeatedly redirecting of the message, a server routing table is provided for the user node which can indicate which files need to be download and which server should be requested to provide the files. Due to the popular filed and the unpopular filed are stored separately and all of unpopular files are stored in a centralized manner, the user can get unpopular files when the user request for the unpopular files in a P2P network.

摘要翻译： 公开了一种在P2P网络，用户节点和服务器上请求资源的位置信息的方法，其允许用户快速获得网络资源。 流行的文件和不受欢迎的文件是单独管理的。 流行文件的元数据基于相应的区域存储多个SN，而不受欢迎的文件的元数据以集中的方式被存储和查询。 将请求消息重定向的功能添加到SN中，以便向用户通知SN-R的存在。 同时，为了提高查询效率并避免重复定向消息，为用户节点提供了一个服务器路由表，可以指示需要下载哪些文件以及哪个服务器需要提供文件。 由于流行的文件和不受欢迎的文件被单独存储，并且所有不受欢迎的文件以集中的方式存储，所以当用户在P2P网络中请求不受欢迎的文件时，用户可以获得不受欢迎的文件。

公开(公告)号：US09160701B2

公开(公告)日：2015-10-13

申请号：US13294636

申请日：2011-11-11

申请人： Yan Hu ,  Yong Xia ,  Yongqiang Liu ,  Quan Huang

发明人： Yan Hu ,  Yong Xia ,  Yongqiang Liu ,  Quan Huang

IPC分类号： H04L12/28 ,  H04L29/12 ,  H04L12/753

CPC分类号： H04L61/103 ,  H04L45/48 ,  H04L61/2038

摘要： The present disclosure provides an addressing method, an addressing apparatus, a fabric manager, a switch, and a data routing method for data center networks. The addressing apparatus includes a tree creating unit for, sequentially with each of switches as a root, creating a tree containing all hosts by means of network topology discovery function, to obtain a plurality of trees; a tree selecting unit for selecting a tree having a minimum height among the created plurality of trees; and an address assigning unit for assigning addresses to each of switches and each of hosts in a network with respect to each selected tree having a minimum height. The present disclosure is adaptable to various topologies employed by the data center. The present disclosure can achieve aggregation of locator addresses so that a forwarding table can be shortened, and can achieve load balance of the network.

摘要翻译： 本公开提供了一种用于数据中心网络的寻址方法，寻址装置，结构管理器，交换机和数据路由方法。 寻址装置包括：树生成单元，用于依次以每个交换机为根，通过网络拓扑发现功能创建包含所有主机的树，以获得多个树; 树选择单元，用于选择所生成的多个树中具有最小高度的树; 以及地址分配单元，用于相对于具有最小高度的每个所选树分配地址到每个交换机和网络中的每个主机。 本公开适用于数据中心采用的各种拓扑。 本公开可以实现定位器地址的聚合，从而可以缩短转发表，并且可以实现网络的负载平衡。

公开(公告)号：US08483089B2

公开(公告)日：2013-07-09

申请号：US13000981

申请日：2010-06-21

申请人： Yan Hu ,  Yong Xia ,  Yongqiang Liu ,  Quan Huang

发明人： Yan Hu ,  Yong Xia ,  Yongqiang Liu ,  Quan Huang

IPC分类号： H04W16/02

CPC分类号： H04L12/56 ,  H04L45/121 ,  H04L49/15 ,  H04L67/104

摘要： The invention provides a server, a method and a system for providing node information for P2P network. A server in a peer-to-peer (P2P) network comprises: a location information storage unit which stores coordinate information indicating a coordinate of each data node in the P2P network in a coordinate system that is created based on communication delays among data nodes in the P2P network; and a node information providing unit which, upon receipt of a request for information on data nodes having a first data item, selects one or more data nodes from data nodes having the first data item based on the coordinate information, and provides information indicating the selected one or more data nodes.

摘要翻译： 本发明提供了一种用于为P2P网络提供节点信息的服务器，方法和系统。 点对点（P2P）网络中的服务器包括：位置信息存储单元，其存储在基于数据节点之间的通信延迟创建的坐标系中的指示P2P网络中每个数据节点的坐标的坐标信息 P2P网络; 以及节点信息提供单元，其在接收到关于具有第一数据项的数据节点的信息的请求时，基于所述坐标信息从具有所述第一数据项的数据节点中选择一个或多个数据节点，并且提供指示所选择的 一个或多个数据节点。

公开(公告)号：US20120124226A1

公开(公告)日：2012-05-17

申请号：US13000981

申请日：2010-06-21

申请人： Yan Hu ,  Yong Xia ,  Yongqiang Liu ,  Quan Huang

发明人： Yan Hu ,  Yong Xia ,  Yongqiang Liu ,  Quan Huang

IPC分类号： G06F15/16

CPC分类号： H04L12/56 ,  H04L45/121 ,  H04L49/15 ,  H04L67/104

摘要： The invention provides a server, a method and a system for providing node information for P2P network. A server in a peer-to-peer (P2P) network comprises: a location information storage unit which stores coordinate information indicating a coordinate of each data node in the P2P network in a coordinate system that is created based on communication delays among data nodes in the P2P network; and a node information providing unit which, upon receipt of a request for information on data nodes having a first data item, selects one or more data nodes from data nodes having the first data item based on the coordinate information, and provides information indicating the selected one or more data nodes.

摘要翻译： 本发明提供了一种用于为P2P网络提供节点信息的服务器，方法和系统。 点对点（P2P）网络中的服务器包括：位置信息存储单元，其存储在基于数据节点之间的通信延迟创建的坐标系中的指示P2P网络中每个数据节点的坐标的坐标信息 P2P网络; 以及节点信息提供单元，其在接收到关于具有第一数据项的数据节点的信息的请求时，基于所述坐标信息从具有所述第一数据项的数据节点中选择一个或多个数据节点，并且提供指示所选择的 一个或多个数据节点。

公开(公告)号：US20110282883A1

公开(公告)日：2011-11-17

申请号：US13125684

申请日：2010-03-26

申请人： Yongqiang Liu ,  Yong Xia ,  Yan Hu ,  Quan Huang

发明人： Yongqiang Liu ,  Yong Xia ,  Yan Hu ,  Quan Huang

IPC分类号： G06F17/30

CPC分类号： G06F16/1837

摘要： An indexing server of a P2P network and a method therefor are provided. The indexing server comprises: a metadata storage unit, which stores one or more entries, each of which is associated with a data file and includes a plurality of information items each indicating a node offering the data file and a location of the node; and a node information managing unit, which monitors the metadata storage unit to identify an entry stored in the metadata storage unit in which the number of information items exceeds a threshold, and transfers a portion of the information items included in the identified entry to another server, the transferred portion including as many as possible such information items that indicate nodes whose locations are close to each other.

摘要翻译： 提供P2P网络的索引服务器及其方法。 索引服务器包括：元数据存储单元，其存储一个或多个条目，每个条目与数据文件相关联，并且包括多个信息项，每个信息项指示提供数据文件的节点和节点的位置; 以及节点信息管理单元，其监视所述元数据存储单元，以识别存储在所述元数据存储单元中的条目，其中所述信息项的数量超过阈值，并将包括在所述识别的条目中的所述信息项的一部分传送到另一个服务器 所传输的部分包括尽可能多的这样的信息项，其指示位置彼此接近的节点。

公开(公告)号：US08411585B2

公开(公告)日：2013-04-02

申请号：US12498878

申请日：2009-07-07

申请人： Yongqiang Liu ,  Yanlin Luo ,  Songjie Chen ,  Gang Wang

发明人： Yongqiang Liu ,  Yanlin Luo ,  Songjie Chen ,  Gang Wang

IPC分类号： G01R31/08 ,  G06F11/00 ,  G08C15/00 ,  H04J1/16 ,  H04J3/14 ,  H04L1/00 ,  H04L12/26 ,  H04W4/00 ,  H04W72/00 ,  H04B7/00 ,  H04B1/00 ,  H04B15/00 ,  H04B17/00

CPC分类号： H04W72/082

摘要： There are disclosed a network interference evaluating method, a dynamic channel assignment method and apparatus used in wireless networks. The dynamic channel assignment method used in a wireless network, comprising steps of: calculating each pair of visual delayed time for each pair of basic service sets based on received signal strength indicators, traffic information and rate information, and evaluating an overall network interference under a current channel allocation based on the calculated visual delayed time; constructing an undirected graph so that each basic service set is located at a vertex, and each connection line between each pair of basic service sets has a weight obtained from the pair of visual delayed time for this pair of basic service sets; coloring the undirected graph to get a new channel allocation approach and an optimized minimal overall network interference under this new channel allocation approach; comparing a difference between the evaluated overall network interference under the current channel allocation and the optimized minimal overall network interference with a predetermined threshold; and changing channel allocation for the basic service sets according to the new channel allocation approach if the difference is larger than the predetermined threshold.

摘要翻译： 公开了一种在无线网络中使用的网络干扰评估方法，动态信道分配方法和装置。 一种在无线网络中使用的动态信道分配方法，包括以下步骤：基于接收到的信号强度指示符，业务信息和速率信息，计算每对基本业务集合的每对视觉延迟时间，以及评估一个 基于计算出的视觉延迟时间的当前频道分配; 构造无向图，使得每个基本服务集位于顶点，并且每对基本服务集之间的每个连接线具有从该对基本服务集合的一对视觉延迟时间获得的权重; 着色无向图，以获得新的信道分配方法，并在此新的信道分配方法下优化最小的总体网络干扰; 将当前信道分配下的所评估的总网络干扰与所述优化的最小总网络干扰之间的差与预定阈值进行比较; 以及如果差值大于预定阈值，则根据新的信道分配方法改变基本业务集的信道分配。

公开(公告)号：US20110307564A1

公开(公告)日：2011-12-15

申请号：US13124770

申请日：2010-03-19

申请人： Yanlin Luo ,  Yongqiang Liu ,  Songjie Chen ,  Quan Huang

发明人： Yanlin Luo ,  Yongqiang Liu ,  Songjie Chen ,  Quan Huang

IPC分类号： G06F15/16

CPC分类号： H04L67/1063 ,  H04L67/1072 ,  H04L67/18 ,  H04W4/023 ,  H04W4/50

摘要： A data node apparatus, a peer information acquisition method and a system are provided. An apparatus that serves as a data node in peer-to-peer (P2P) data exchange, comprising: a data node application unit that issues a peer list request and carries out data exchange with peers; and a list processing unit that intercepts an original peer list provided by an indexing server in response to the peer list request, issues a peer location request to an information server and receives peer location information provided by the information server in response to the peer location request, performs a processing on the original peer list based on the peer location information to derive a processed peer list, and provides the processed peer list to the data node application unit.

摘要翻译： 提供数据节点装置，对等体信息获取方法和系统。 一种用作对等（P2P）数据交换中的数据节点的装置，包括：发送对等体列表请求并与对等体进行数据交换的数据节点应用单元; 以及列表处理单元，其响应于对等体列表请求拦截由索引服务器提供的原始对等体列表，向对方信息服务器发出对等位置请求，并且响应于对等位置请求接收由信息服务器提供的对等位置信息 基于对等位置信息对原始对等体列表执行处理以导出处理的对等体列表，并将处理的对等体列表提供给数据节点应用单元。

公开(公告)号：US08023468B2

公开(公告)日：2011-09-20

申请号：US11850969

申请日：2007-09-06

申请人： Yongqiang Liu ,  Yanfeng Zhang ,  Yong Xia

发明人： Yongqiang Liu ,  Yanfeng Zhang ,  Yong Xia

IPC分类号： H04W36/00

CPC分类号： H04W48/12 ,  H04W36/08

摘要： Methods, devices and system for access point facilitated fast handoff are provided. Each access point (AP) in a wireless local area network is provided with a primary interface and a secondary interface wherein the primary interface performs normal communication with user terminals and broadcasts standard beacon frames on its working channel, and the secondary interface broadcasts extended beacon frames on working channels of neighbor APs sequentially. The extended beacon frame includes at least information of BSSID, SSID, working channel and the like of the primary interface of the corresponding AP. The user terminal may receive the standard beacons from the serving AP it is communicating with and the extended beacons from the neighbor APs, and according to the two kinds of beacons, the terminal may calculate the signal quality with the primary interface of the serving AP and the signal qualities with the neighbor APs at the current position. By an algorithm of comparing the signal qualities of the best neighbor AP and the serving AP, the terminal may accurately and quickly determine whether to perform handoff with minimized cost.

摘要翻译： 提供了接入点的方法，设备和系统，促进了快速切换。 无线局域网中的每个接入点（AP）设置有主接口和次接口，其中主接口与用户终端进行正常通信，并在其工作信道上广播标准信标帧，并且辅助接口广播扩展信标帧 在相邻AP的工作信道上。 扩展信标帧至少包括相应AP的主要接口的BSSID，SSID，工作信道等的信息。 用户终端可以从其正在通信的服务AP接收标准信标，并从相邻AP接收扩展信标，并且根据两种信标，终端可以使用服务AP的主接口来计算信号质量， 与当前位置的邻居AP的信号质量。 通过比较最佳邻居AP和服务AP的信号质量的算法，终端可以准确且快速地确定是否以最小化的成本执行切换。

公开(公告)号：US20080064404A1

公开(公告)日：2008-03-13

申请号：US11850209

申请日：2007-09-05

申请人： Yanfeng Zhang ,  Yongqiang Liu ,  Yong Xia

发明人： Yanfeng Zhang ,  Yongqiang Liu ,  Yong Xia

IPC分类号： H04Q7/20

CPC分类号： H04W36/08 ,  H04W36/36 ,  H04W84/12

摘要： Methods and device for user terminal based fast handoff are provided. User terminal builds a neighbor group list in which possible neighbor access points (APs) are divided into one or more groups. When a handoff needs to be prepared, the user terminal performs intermittently multiple pre-break probing subphases according to the neighbor group list while not breaking connection with a current serving AP. In each PBP subphase, signal qualities of neighbor APs in one group are probed in a manner of active probing. The user terminal selectively performs handoff according to the probed signal qualities of the neighbor APs. The user terminal may build the neighbor group list based on information of neighbor APs derived through overlapped channel scanning or information of neighbor APs received from the serving AP. The neighbor APs belonging to the same group work on the same channel and in each PBP subphase, a group of neighbor APs may be probed by using unicast probe request.

摘要翻译： 提供了基于用户终端快速切换的方法和设备。 用户终端构建邻居组列表，其中可能的邻居接入点（AP）被划分成一个或多个组。 当切换需要准备时，用户终端根据邻居组列表间歇地执行多个预中断探测子时间，而不断开与当前服务AP的连接。 在每个PBP子阶段，一组中相邻AP的信号质量以主动探测的方式进行探测。 用户终端根据相邻AP的探测信号质量有选择地执行切换。 用户终端可以基于通过重叠信道扫​​描导出的相邻AP的信息或从服务AP接收的相邻AP的信息来构建邻居组列表。 属于同一组的邻居AP在同一信道上工作，在每个PBP子时隙中，可以通过使用单播探测请求来探测一组邻居AP。

公开(公告)号：US20080062933A1

公开(公告)日：2008-03-13

申请号：US11850969

申请日：2007-09-06

申请人： Yongqiang Liu ,  Yanfeng Zhang ,  Yong Xia

发明人： Yongqiang Liu ,  Yanfeng Zhang ,  Yong Xia

IPC分类号： H04Q7/00

CPC分类号： H04W48/12 ,  H04W36/08

摘要： Methods, devices and system for access point facilitated fast handoff are provided. Each access point (AP) in a wireless local area network is provided with a primary interface and a secondary interface wherein the primary interface performs normal communication with user terminals and broadcasts standard beacon frames on its working channel, and the secondary interface broadcasts extended beacon frames on working channels of neighbor APs sequentially. The extended beacon frame includes at least information of BSSID, SSID, working channel and the like of the primary interface of the corresponding AP. The user terminal may receive the standard beacons from the serving AP it is communicating with and the extended beacons from the neighbor APs, and according to the two kinds of beacons, the terminal may calculate the signal quality with the primary interface of the serving AP and the signal qualities with the neighbor APs at the current position. By an algorithm of comparing the signal qualities of the best neighbor AP and the serving AP, the terminal may accurately and quickly determine whether to perform handoff with minimized cost.

摘要翻译： 提供了接入点的方法，设备和系统，促进了快速切换。 无线局域网中的每个接入点（AP）设置有主接口和次接口，其中主接口与用户终端进行正常通信，并在其工作信道上广播标准信标帧，并且辅助接口广播扩展信标帧 在相邻AP的工作信道上。 扩展信标帧至少包括相应AP的主要接口的BSSID，SSID，工作信道等的信息。 用户终端可以从其正在通信的服务AP接收标准信标，并从相邻AP接收扩展信标，并且根据两种信标，终端可以利用服务AP的主接口来计算信号质量， 与当前位置的邻居AP的信号质量。 通过比较最佳邻居AP和服务AP的信号质量的算法，终端可以准确且快速地确定是否以最小化的成本执行切换。