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1. 发明申请

US20090080377A1 Distributed Channel Management Based on Channel Hopping in Uncoordinated 802.11 Based WLAN 审中-公开
标题翻译：基于无协调802.11的无线局域网中基于信道跳转的分布式信道管理
公开(公告)号：US20090080377A1
公开(公告)日：2009-03-26
申请号：US11860104
申请日：2007-09-24
申请人： Samrat Ganguly , Vishnu Navda , Aniruddha Bohra , Daniel S. Rubenstein
发明人： Samrat Ganguly , Vishnu Navda , Aniruddha Bohra , Daniel S. Rubenstein
IPC分类号： H04Q7/00
CPC分类号： H04W16/10
摘要： In accordance with the invention, a method includes i) obtaining first for each AP hopping sequences of other interfering APs; and ii) determining for the AP a respective hopping sequence that maximizes each APs throughput. Preferably, the step of determining comprises for each slot AP choosing a channel that minimizes the number of edges which violate a k-coloring property. In an exemplary embodiment, the method further includes the step of the AP selecting one of (a) a channel uniformly at random from all such channels and (b) selecting a channel that distributes interference evenly as possible among neighboring APs.
摘要翻译：根据本发明，一种方法包括：i）首先获得其他干扰AP的每个AP跳频序列; 以及ii）为所述AP确定使每个AP的吞吐量最大化的相应跳频序列。优选地，确定步骤包括对于每个时隙AP选择使违反k着色特性的边缘数量最小化的信道。在一个示例性实施例中，该方法还包括AP从所有这样的信道中随机均匀地选择（a）信道中的一个的步骤，以及（b）选择尽可能均匀地在相邻AP之间分配干扰的信道。

2. 发明申请

US20070162462A1 Wide Area Networked File System 有权
标题翻译：广域网文件系统
公开(公告)号：US20070162462A1
公开(公告)日：2007-07-12
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转发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，该系统中用于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。

3. 发明授权

US08868626B2 System and method for controlling a file system 有权
标题翻译：用于控制文件系统的系统和方法
公开(公告)号：US08868626B2
公开(公告)日：2014-10-21
申请号：US12102672
申请日：2008-04-14
申请人： Liviu Iftode , Stephen Smaldone , Aniruddha Bohra
发明人： Liviu Iftode , Stephen Smaldone , Aniruddha Bohra
IPC分类号： G06F12/00 , G06F17/30
CPC分类号： G06F17/3007
摘要： According to various embodiments of the invention, a system and method for controlling a file system. In some embodiments, a control plane interposes between a data plane user and a data plane, intercepts file system operations, and performs control plane operations upon the file system operations. In one such embodiment, the system and method is implemented between a data plane user that is a local file system user and a data plane that is a local file system. In another such embodiment, the system and method is implemented between a data plane user that is a client and a data plane that is a file server. Furthermore, for an embodiment where the control plane that interposes between a client and a file server, the control plane can be implemented as a file system proxy. Control plane operations include, but are not limited to, observation, verification, and transformation of a file system operation.
摘要翻译：根据本发明的各种实施例，一种用于控制文件系统的系统和方法。在一些实施例中，控制平面介于数据平面用户与数据平面之间，拦截文件系统操作，并在文件系统操作时执行控制平面操作。在一个这样的实施例中，系统和方法在作为本地文件系统用户的数据平面用户和作为本地文件系统的数据平面之间实现。在另一个这样的实施例中，系统和方法在作为客户机的数据平面用户和作为文件服务器的数据平面之间实现。此外，对于在客户机和文件服务器之间插入的控制平面的实施例，控制平面可以被实现为文件系统代理。控制平面操作包括但不限于文件系统操作的观察，验证和转换。

4. 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。

5. 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。

6. 发明申请

US20090043823A1 SYSTEM AND METHOD FOR CONTROLLING A FILE SYSTEM 有权
标题翻译：用于控制文件系统的系统和方法
公开(公告)号：US20090043823A1
公开(公告)日：2009-02-12
申请号：US12102672
申请日：2008-04-14
申请人： LIVIU IFTODE , Stephen Smaldone , Aniruddha Bohra
发明人： LIVIU IFTODE , Stephen Smaldone , Aniruddha Bohra
IPC分类号： G06F17/30
CPC分类号： G06F17/3007
摘要： According to various embodiments of the invention, a system and method for controlling a file system. In some embodiments, a control plane interposes between a data plane user and a data plane, intercepts file system operations, and performs control plane operations upon the file system operations. In one such embodiment, the system and method is implemented between a data plane user that is a local file system user and a data plane that is a local file system. In another such embodiment, the system and method is implemented between a data plane user that is a client and a data plane that is a file server. Furthermore, for an embodiment where the control plane that interposes between a client and a file server, the control plane can be implemented as a file system proxy. Control plane operations include, but are not limited to, observation, verification, and transformation of a file system operation.
摘要翻译：根据本发明的各种实施例，一种用于控制文件系统的系统和方法。在一些实施例中，控制平面介于数据平面用户与数据平面之间，拦截文件系统操作，并在文件系统操作时执行控制平面操作。在一个这样的实施例中，系统和方法在作为本地文件系统用户的数据平面用户和作为本地文件系统的数据平面之间实现。在另一个这样的实施例中，系统和方法在作为客户机的数据平面用户和作为文件服务器的数据平面之间实现。此外，对于在客户机和文件服务器之间插入的控制平面的实施例，控制平面可以被实现为文件系统代理。控制平面操作包括但不限于文件系统操作的观察，验证和转换。

7. 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。

8. 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。

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