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11. 发明授权

US07944868B2 Method and system for dynamic power management in wireless local area networks 有权
标题翻译：无线局域网动态电源管理方法与系统
公开(公告)号：US07944868B2
公开(公告)日：2011-05-17
申请号：US11935648
申请日：2007-11-06
申请人： Ravidranath Kokku , Vishnu Navda , Samrat Ganguly
发明人： Ravidranath Kokku , Vishnu Navda , Samrat Ganguly
IPC分类号： G08C17/00 , H04W4/00 , H04B7/00 , H04J3/14
CPC分类号： H04W52/34 , H04W52/367 , H04W56/00 , H04W84/12
摘要： A method and system for improving spatial reuse in a wireless local area network (WLAN) by per-client dynamic power management. Each access point of the WLAN associates each of its clients with a minimum power level. A central controller of the WLAN generates a schedule for transmission at different power levels, and each access point varies its transmission power level based on the schedule. An access point transmits data packets, at the scheduled transmission power level, to clients associated with a minimum power level that is less than the scheduled power level.
摘要翻译：一种通过每客户端动态电源管理改善无线局域网（WLAN）中的空间重用的方法和系统。 WLAN的每个接入点将其每个客户端与最小功率电平相关联。 WLAN的中央控制器产生用于以不同功率电平进行传输的时间表，并且每个接入点根据时间表改变其发射功率电平。接入点以调度的发送功率电平将数据分组发送到与小于所计划的功率电平的最小功率电平相关联的客户端。

12. 发明申请

US20070177739A1 Method and Apparatus for Distributed Data Replication 审中-公开
标题翻译：分布式数据复制的方法和装置
公开(公告)号：US20070177739A1
公开(公告)日：2007-08-02
申请号：US11275764
申请日：2006-01-27
申请人： Samrat Ganguly , Aniruddha Bohra , Rauf Izmailov , Yoshihide Kikuchi
发明人： Samrat Ganguly , Aniruddha Bohra , Rauf Izmailov , Yoshihide Kikuchi
IPC分类号： H04L9/00
CPC分类号： H04L63/0428 , H04L12/1881
摘要： Disclosed is a data replication technique for providing erasure encoded replication of large data sets over a geographically distributed replica set. The technique utilizes a multicast tree to store, forward, and erasure encode the data set. The erasure encoding of data may be performed at various locations within the multicast tree, including the source, intermediate nodes, and destination nodes. In one embodiment, the system comprises a source node for storing the original data set, a plurality of intermediate nodes, and a plurality of leaf nodes for storing the unique replica fragments. The nodes are configured as a multicast tree to convert the original data into the unique replica fragments by performing distributed erasure encoding at a plurality of levels of the multicast tree.
摘要翻译：公开了一种数据复制技术，用于在地理上分布的副本集上提供大数据集的擦除编码复制。该技术利用组播树来存储，转发和擦除数据集的编码。数据的擦除编码可以在多播树内的各个位置执行，包括源，中间节点和目的地节点。在一个实施例中，系统包括用于存储原始数据集的源节点，多个中间节点和用于存储唯一副本片段的多个叶节点。这些节点被配置为多播树，以通过在多播树的多个级别执行分布式擦除编码来将原始数据转换成唯一的副本片段。

13. 发明申请

US20060165053A1 Content based data packet routing using labels 审中-公开
标题翻译：基于内容的数据包路由使用标签
公开(公告)号：US20060165053A1
公开(公告)日：2006-07-27
申请号：US11040849
申请日：2005-01-21
申请人： Sudeept Bhatnagar , Samrat Ganguly , Rauf Izmailov , Yasuhiro Miyao
发明人： Sudeept Bhatnagar , Samrat Ganguly , Rauf Izmailov , Yasuhiro Miyao
IPC分类号： H04L12/28
CPC分类号： H04L67/02 , H04L45/306 , H04L45/38 , H04L67/327
摘要： Disclosed is a content based router, system and method of operation. Upon receipt of a data packet at in ingress router, the ingress router matches the content of the data packet against stored user subscriptions. In one embodiment, the content is described using XML data and the user subscriptions are defined by XML queries. The router assigns a routing label to the data packet based on the matching, and transmits the data packet to a second network router. Intermediate routers along the packets path then use the assigned label in combination with stored routing tables in order to determine next hop routing. Upon receipt at an egress router, the content of the message is matched against user subscriptions for those users serviced by the egress router, and the egress router provides the data packet to those end users whose subscriptions match the content. The assigned routing labels may define routing paths or routing trees.
摘要翻译：公开了一种基于内容的路由器，系统和操作方法。在入口路由器接收到数据包时，入口路由器将数据包的内容与存储的用户订阅相匹配。在一个实施例中，使用XML数据描述内容，并且用户订阅由XML查询定义。路由器根据匹配对数据包分配路由标签，并将数据包发送到第二个网络路由器。沿着分组路径的中间路由器然后使用分配的标签与存储的路由表的组合，以便确定下一跳路由。在出口路由器接收到消息的内容与由出口路由器服务的那些用户的用户订阅进行匹配，并且出口路由器向订阅与内容匹配的最终用户提供数据包。分配的路由标签可以定义路由路径或路由树。

14. 发明授权

US07840618B2 Wide area networked file system 有权
标题翻译：广域网络文件系统
公开(公告)号：US07840618B2
公开(公告)日：2010-11-23
申请号：US11616925
申请日：2006-12-28
申请人： Hui Zhang , Aniruddha Bohra , Samrat Ganguly , Rauf Izmailov , Jian Liang
发明人： Hui Zhang , Aniruddha Bohra , Samrat Ganguly , Rauf Izmailov , Jian Liang
IPC分类号： G06F17/30
CPC分类号： G06F17/30067
摘要： Traditional networked file systems like NFS do not extend to wide-area due to network latency and dynamics introduced in the WAN environment. To address that problem, a wide-area networked file system is based on a traditional networked file system (NFS/CIFS) and extends to the WAN environment by introducing a file redirector infrastructure residing between the central file server and clients. The file redirector infrastructure is invisible to both the central server and clients so that the change to NFS is minimal. That minimizes the interruption to the existing file service when deploying WireFS on top of NFS. The system includes an architecture for an enterprise-wide read/write wide area network file system, protocols and data structures for metadata and data management in this system, algorithms for history based prefetching for access latency minimization in metadata operations, and a distributed randomized algorithm for the implementation of global LRU cache replacement scheme.
摘要翻译：由于WAN环境中引入的网络延迟和动态，传统的网络文件系统（如NFS）不会扩展到广域。为了解决这个问题，广域网络文件系统基于传统的网络文件系统（NFS / CIFS），并通过引入位于中央文件服务器和客户端之间的文件重定向器基础架构来扩展到WAN环境。文件重定向器基础结构对于中央服务器和客户端都是不可见的，因此对NFS的更改是最小的。这可以最大程度地减少在NFS上部署WireFS时现有文件服务的中断。该系统包括用于企业级读/写广域网文件系统的架构，该系统中元数据和数据管理的协议和数据结构，用于基于历史的预取用于元数据操作中的访问延迟最小化的算法，以及分布式随机算法用于实施全局LRU缓存替换方案。

15. 发明授权

US07643427B2 Multipath routing architecture for large data transfers 有权
标题翻译：用于大数据传输的多路径路由架构
公开(公告)号：US07643427B2
公开(公告)日：2010-01-05
申请号：US11690942
申请日：2007-03-26
申请人： Ravindranath Kokku , Aniruddha Bohra , Samrat Ganguly , Rauf Izmailov
发明人： Ravindranath Kokku , Aniruddha Bohra , Samrat Ganguly , Rauf Izmailov
IPC分类号： H04J3/14
CPC分类号： H04L45/00 , H04L45/24 , H04L47/10 , H04L47/11 , H04L47/122 , H04L47/283
摘要： A multipath routing architecture for large data transfers is disclosed. The architecture employs an overlay network that provides diverse paths for packets from communicating end hosts to utilize as much capacity as available across multiple paths while ensuring network-wide fair allocation of resources across competing data transfers. A set of transit nodes are interposed between the end-hosts and for each end-to-end connection, a transit node can logically operate as an entry gateway, a relay or exit gateway. Packets from the sender enter the entry node and go to the exit node either directly or through one of a plurality of relay nodes. The exit node delivers the packets to the receiver. A multipath congestion control protocol is executed on the entry node to harness network capacity for large data transfers.
摘要翻译：公开了一种用于大数据传输的多路径路由架构。该架构采用覆盖网络，为来自通信终端主机的数据包提供不同的路径，以便跨多个路径使用尽可能多的容量，同时确保跨竞争数据传输进行全网络的资源公平分配。一组传输节点插在终端主机之间，并且对于每个端到端连接，传输节点可以逻辑地作为入口网关，中继或退出网关操作。来自发送者的报文输入入口节点，直接或通过多个中继节点之一进入退出节点。退出节点将数据包传送到接收器。在入口节点上执行多径拥塞控制协议，以利用网络容量进行大数据传输。

16. 发明申请

US20080297413A1 Slotted Sectored Scheduling with Steerable Directional Antennas in Wireless LANS 审中-公开
标题翻译：无线局域网中带有可导向定向天线的时隙调度
公开(公告)号：US20080297413A1
公开(公告)日：2008-12-04
申请号：US12129027
申请日：2008-05-29
申请人： Ravindranath Kokku , Samrat Ganguly , Vishnu Navda
发明人： Ravindranath Kokku , Samrat Ganguly , Vishnu Navda
IPC分类号： H04Q7/20 , H04B7/10 , H04L12/56
CPC分类号： H04W72/082 , H04B7/0408 , H04W16/28
摘要： A method includes determining for each access point and each associated client that has traffic to exchange with the access point in either directions of a link a pattern of slots of times that causes minimum interference to clients of other access points in a wireless local area network; deriving a conflict graph of pair wise patterns of different access points representing which patterns conflict on a particular client, the conflict graph representing which patterns of the slots cannot be scheduled simultaneously in a slot so as to avoid interference; and generating a schedule for each access points in the slots such that no two conflicting patterns for two different access points are scheduled in the same slot.
摘要翻译：一种方法包括为每个接入点和每个相关联的客户端确定具有业务量以在链路的任一方向上与接入点交换的时间的时隙模式，其对无线局域网中的其他接入点的客户端造成最小的干扰; 得出表示哪个模式在特定客户端上冲突的不同接入点的成对模式的冲突图，表示不能在时隙中同时调度时隙的哪些模式以避免干扰的冲突图; 并且为这些时隙中的每个接入点生成一个调度，使得两个不同接入点的两个冲突模式在相同的时隙中被调度。

17. 发明申请

US20070230352A1 Multipath Routing Architecture for Large Data Transfers 有权
标题翻译：用于大数据传输的多路径路由架构
公开(公告)号：US20070230352A1
公开(公告)日：2007-10-04
申请号：US11690942
申请日：2007-03-26
申请人： Ravindranath Kokku , Aniruddha Bohra , Samrat Ganguly , Rauf Izmailov
发明人： Ravindranath Kokku , Aniruddha Bohra , Samrat Ganguly , Rauf Izmailov
IPC分类号： H04J3/14
CPC分类号： H04L45/00 , H04L45/24 , H04L47/10 , H04L47/11 , H04L47/122 , H04L47/283
摘要： A multipath routing architecture for large data transfers is disclosed. The architecture employs an overlay network that provides diverse paths for packets from communicating end hosts to utilize as much capacity as available across multiple paths while ensuring network-wide fair allocation of resources across competing data transfers. A set of transit nodes are interposed between the end-hosts and for each end-to-end connection, a transit node can logically operate as an entry gateway, a relay or exit gateway. Packets from the sender enter the entry node and go to the exit node either directly or through one of a plurality of relay nodes. The exit node delivers the packets to the receiver. A multipath congestion control protocol is executed on the entry node to harness network capacity for large data transfers.
摘要翻译：公开了一种用于大数据传输的多路径路由架构。该架构采用覆盖网络，为来自通信终端主机的数据包提供不同的路径，以便跨多个路径使用尽可能多的容量，同时确保跨竞争数据传输进行全网络的资源公平分配。一组传输节点插在终端主机之间，并且对于每个端到端连接，传输节点可以逻辑地作为入口网关，中继或退出网关操作。来自发送者的报文输入入口节点，直接或通过多个中继节点之一进入退出节点。退出节点将数据包传送到接收器。在入口节点上执行多径拥塞控制协议，以利用网络容量进行大数据传输。

18. 发明申请

US20070061282A1 Data network information distribution 审中-公开
标题翻译：数据网络信息分发
公开(公告)号：US20070061282A1
公开(公告)日：2007-03-15
申请号：US11226001
申请日：2005-09-14
申请人： Samrat Ganguly , Sudeept Bhatnagar , Rauf Izmailov , Yasuhiro Miyao
发明人： Samrat Ganguly , Sudeept Bhatnagar , Rauf Izmailov , Yasuhiro Miyao
IPC分类号： G06F17/30
CPC分类号： H04L67/26 , H04L29/06027 , H04L65/4084 , H04L65/4092 , H04L67/1002 , H04L67/1014 , H04L67/1017 , H04L67/2842
摘要： Disclosed is a method and apparatus for delivering information of interests from content providers to clients via a data network. A network architecture includes two types of edge servers, referred to as forward proxy servers and reverse proxy servers. The forward proxy servers are assigned to serve particular clients with respect to particular information and the reverse proxy servers are assigned to serve particular forward proxy servers with respect to particular information. Each of the forward proxy servers stores information identifiers associated with information for which the forward proxy server is assigned to serve to at least one client. Each of the reverse proxy servers stores information identifiers and the associated forward proxy servers that the reverse proxy server is assigned to serve with respect to information associated with the information identifiers. Upon receipt of updated content, the reverse proxy servers send the updated content to those forward proxy servers that the reverse proxy server is assigned to serve with respect to the received updated content. The forward proxy servers then provide the updated content to the clients to which they are assigned, either by responding to a request from those clients or by pushing the information to those clients. Network load balancing is provided by a controller network node for controlling the assignments of clients to forward proxy servers and the assignments of forward proxy servers to reverse proxy servers.
摘要翻译：公开了一种通过数据网络将内容提供商的兴趣信息传递给客户端的方法和装置。网络架构包括两种类型的边缘服务器，称为转发代理服务器和反向代理服务器。分配前向代理服务器以针对特定信息为特定客户端服务，并且分配反向代理服务器以针对特定信息为特定的前向代理服务器服务。每个前向代理服务器存储与分配了前向代理服务器的信息相关联的信息标识符，以向至少一个客户端提供服务。每个逆向代理服务器存储信息标识符和相关联的转发代理服务器，反向代理服务器被分配用于与信息标识符相关联的信息。在接收到更新的内容之后，反向代理服务器将更新的内容发送到相对于所接收的更新内容而被分配为反向代理服务器来服务的那些转发代理服务器。然后，转发代理服务器通过响应来自这些客户端的请求或者将信息推送到这些客户端来向被分配给它们的客户端提供更新的内容。网络负载平衡由控制器网络节点提供，用于控制客户端转发代理服务器的分配以及转发代理服务器到逆向代理服务器的分配。

19. 发明申请

US20060184688A1 System and Method for Parallel Indirect Streaming of Stored Media from Multiple Sources 审中-公开
标题翻译：从多个来源并行间接流媒体存储介质的系统和方法
公开(公告)号：US20060184688A1
公开(公告)日：2006-08-17
申请号：US11276122
申请日：2006-02-15
申请人： Samrat Ganguly , Sudeept Bhatnagar , Akhilesh Saxena , Rauf Izmailov
发明人： Samrat Ganguly , Sudeept Bhatnagar , Akhilesh Saxena , Rauf Izmailov
IPC分类号： G06F15/16
CPC分类号： H04L67/325 , H04L65/4084 , H04L67/28 , H04L67/2842
摘要： A system and method are herein disclosed for parallel streaming of stored media from multiple sources. The architecture utilizes the notion of indirect streaming and provides a local proxy streaming server which is responsible for interacting with the multiple servers and scheduling downloads of media blocks and for dealing with possible rate fluctuations and server failures.
摘要翻译：本文公开了一种用于从多个源并行流式存储的媒体的系统和方法。该架构利用间接流的概念，并提供一个本地代理流服务器，负责与多个服务器进行交互，调度媒体块的下载以及处理可能的速率波动和服务器故障。

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