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1. 发明授权

US07394769B2 Method, system and article for rapid detection and avoidance of high data corrupting routes within a network 有权
标题翻译：用于快速检测和避免网络内高数据损坏路由的方法，系统和文章
公开(公告)号：US07394769B2
公开(公告)日：2008-07-01
申请号：US10640819
申请日：2003-08-14
申请人： Dwip N. Banerjee , Vinit Jain , Vasu Vallabhaneni , Venkat Venkatsubra
发明人： Dwip N. Banerjee , Vinit Jain , Vasu Vallabhaneni , Venkat Venkatsubra
IPC分类号： H04J1/16
CPC分类号： H04L1/0061 , H04L1/0072 , H04L1/08 , H04L1/16 , H04L1/1809 , H04L45/00 , H04L45/22 , H04L45/28 , H04L69/16 , H04L69/161 , H04L69/163 , H04L69/22 , H04L69/40
摘要： A receiving host in a TCP/IP network sends an acknowledgment indicating a received data packet is corrupt. The sending host will begin transmitting with a new field set in the IP header called a check-TCP-checksum bit, thereby requesting that all routers in the TCP/IP network perform a checksum on the entire received packet. Routers in the TCP/IP network will perform a complete checksum on an entire packet with the check-TCP-checksum bit set, and not just on the IP header. The routers continuously monitor the ratio of corrupt packets received on a particular port that fail the entire packet checksum to the total number of packets received on that port. If the ratio of corrupt-to-received packets exceeds a corruption threshold, the router assumes that the associated link is causing data corruption and issues a routing update indicating that the link is bad and should be avoided. Once the retransmission rate between the sender and receiver drops below a threshold level, the bad link has been detected and avoided within the TCP/IP network and the check-TCP-checksum option in the IP header is no longer set in data packets transmitted to the receiver host.
摘要翻译： TCP / IP网络中的接收主机发送指示接收到的数据包已损坏的确认。发送主机将开始使用称为检查TCP校验和位的IP报头中设置的新字段进行发送，从而请求TCP / IP网络中的所有路由器对整个接收到的数据包执行校验和。 TCP / IP网络中的路由器将对整个数据包执行完整的校验和，同时检查TCP-checksum位，而不仅仅是在IP报头上。路由器连续监视在特定端口上接收的损坏数据包的总数与在该端口上接收的数据包的总数之间的比例。如果损坏的数据包的比例超过了破坏阈值，则路由器假设相关联的链路导致数据损坏，并发出路由更新，指示链路不良，应该避免。一旦发送方和接收方之间的重传速率下降到阈值以下，就会在TCP / IP网络内检测并避免不良链路，并且IP报头中的check-TCP-checksum选项不再被设置在发送到接收主机。

2. 发明授权

US07526556B2 Method and apparatus for managing keepalive transmissions 有权
标题翻译：用于管理保持性传输的方法和装置
公开(公告)号：US07526556B2
公开(公告)日：2009-04-28
申请号：US10607460
申请日：2003-06-26
申请人： Dwip N. Banerjee , Vinit Jain , Vasu Vallabhaneni , Venkat Venkatsubra
发明人： Dwip N. Banerjee , Vinit Jain , Vasu Vallabhaneni , Venkat Venkatsubra
IPC分类号： G06F15/16 , G06F15/173
CPC分类号： H04L69/16 , H04L69/14 , H04L69/163
摘要： A method, apparatus, and computer instructions for managing keepalive transmissions. A keepalive packet is received from a remote data processing over a particular connection within a set of connections to the remote data processing system. Timers for each of the set of connections are reset in response to receiving a response to a keepalive packet from the remote data processing system such that only a single keepalive packet is required to maintain all of the plurality of connections with the remote data processing system. In this manner, the number of requests and responses with respect to whether a connection is active is minimized, reducing congestion in a network data processing system.
摘要翻译：一种用于管理保持性传输的方法，装置和计算机指令。从与远程数据处理系统的一组连接中的特定连接的远程数据处理接收到keepalive分组。响应于从远程数据处理系统接收到对keepalive分组的响应，针对每组连接的定时器被重置，使得仅需要一个保持活动分组来保持与远程数据处理系统的所有多个连接。以这种方式，最小化关于连接是否活动的请求和响应的数量，从而减少网络数据处理系统中的拥塞。

3. 发明授权

US07236476B2 mSCTP based handover of a mobile device between non-intersecting networks 有权
标题翻译：基于mSCTP的移动设备在不相交网络之间切换
公开(公告)号：US07236476B2
公开(公告)日：2007-06-26
申请号：US10677656
申请日：2003-10-02
申请人： Dwip N. Banerjee , Kavitha Vittal Murthy Baratakke , Vasu Vallabhaneni , Venkat Venkatsubra
发明人： Dwip N. Banerjee , Kavitha Vittal Murthy Baratakke , Vasu Vallabhaneni , Venkat Venkatsubra
IPC分类号： H04Q7/00 , H04L12/56
CPC分类号： H04W36/0011 , H04W80/06 , H04W88/14
摘要： Responsive to detecting a need for a mobile device to transfer out of a first network, requests are sent from the mobile device to a communication endpoint in mSCTP. The first request is to stop transmissions to a first address of said mobile device. The second request is to add an intermediary address of a mobility support service designated for receiving any communications already in transmission when the first request is sent. The communication link for the mobile device is then transitioned from the current address at the first network to a second address at a second network. The first network and the second network are non-intersecting networks. The mobile device then indicates to the mobility support service that the handover from the first network to the second network is complete. The mobility support service responds to the completion by sending a third request in mSCTP to the communication endpoint to continue communication with the mobile client at the second address.
摘要翻译：响应于检测移动设备从第一网络传出的需求，请求从移动设备发送到mSCTP中的通信端点。第一个请求是停止对所述移动设备的第一地址的传输。第二个请求是在发送第一个请求时添加指定用于接收已经在传输中的任何通信的移动性支持服务的中间地址。然后，用于移动设备的通信链路从第一网络的当前地址转换到第二网络处的第二地址。第一个网络和第二个网络是不相交的网络。然后，移动设备向移动性支持服务指示从第一网络到第二网络的切换是完整的。移动支持服务通过在mSCTP发送第三请求到通信端点来响应完成，以继续与第二地址处的移动客户端通信。

4. 发明授权

US07571247B2 Efficient send socket call handling by a transport layer 失效
标题翻译：传输层有效发送socket呼叫处理
公开(公告)号：US07571247B2
公开(公告)日：2009-08-04
申请号：US11301106
申请日：2005-12-12
申请人： Dwip N. Banerjee , Vinit Jain , Kavitha Ramalingam , Venkat Venkatsubra
发明人： Dwip N. Banerjee , Vinit Jain , Kavitha Ramalingam , Venkat Venkatsubra
IPC分类号： G06F15/16
CPC分类号： H04L47/10 , H04L47/266 , H04L47/30 , H04L49/90 , H04L49/901
摘要： A method, system, and program provide for efficient send socket call handling by a transport layer. A transport layer of a network protocol stack receives a send socket call for data of a specified length from an application layer. Responsive to detecting that there is insufficient memory for a single memory allocation to a buffer in the transport layer for at least the specified length, the transport layer blocks the send socket call. The transport layer only wakes the send socket call upon detection of sufficient memory for the single memory allocation within the buffer of the transport layer for at least the specified length, wherein waking the send socket call triggers a kernel to perform the single memory allocation in the buffer and to write the data to the single memory allocation in a single pass.
摘要翻译：方法，系统和程序提供传输层有效的发送套接字呼叫处理。网络协议栈的传输层从应用层接收指定长度的数据的发送套接字调用。响应于检测到对于至少指定长度的传输层中的缓冲器的单个存储器分配没有足够的存储器，传输层阻止发送套接字调用。检测到传输层缓冲区内单个内存分配的足够内存至少达到指定长度时，传输层只会唤醒发送套接字调用，其中唤醒发送套接字调用会触发内核执行单个内存分配缓冲区，并将数据写入单次存储器分配。

5. 发明授权

US07568030B2 Monitoring thread usage to dynamically control a thread pool 失效
标题翻译：监控线程使用情况，以动态控制线程池
公开(公告)号：US07568030B2
公开(公告)日：2009-07-28
申请号：US12027044
申请日：2008-02-06
申请人： Dwip N Banerjee , Kavitha Vittal Murthy Baratakke , Vinit Jain , Venkat Venkatsubra
发明人： Dwip N Banerjee , Kavitha Vittal Murthy Baratakke , Vinit Jain , Venkat Venkatsubra
IPC分类号： G06F13/00
CPC分类号： G06F9/5027 , G06F9/544 , G06F2209/5018 , G06F2209/508
摘要： A method, system, and program for monitoring thread usage to dynamically control a thread pool are provided. An application running on the server system invokes a listener thread on a listener socket for receiving client requests at the server system and passing the client requests to one of multiple threads waiting in a thread pool. Additionally, the application sends an ioctl call in blocking mode on the listener thread. A TCP layer within the server system detects the listener thread in blocking mode and monitors a thread count of at least one of a number of incoming requests waiting to be processed and a number of said plurality of threads remaining idle in the thread pool over a sample period. Once the TCP layer detects a thread usage event, the ioctl call is returned indicating the thread usage event with the thread count, such that a number of threads in the thread pool may be dynamically adjusted to handle the thread count.
摘要翻译：提供了一种用于监视线程使用以动态控制线程池的方法，系统和程序。在服务器系统上运行的应用程序调用侦听器套接字上的侦听器线程，以便在服务器系统上接收客户端请求，并将客户端请求传递给等待线程池的多个线程之一。此外，应用程序在侦听器线程上以阻塞模式发送ioctl调用。服务器系统内的TCP层以阻塞模式检测侦听器线程，并且监视等待被处理的多个传入请求中的至少一个的线程计数，并且线程池中的多个线程在一个样本上保持空闲期。一旦TCP层检测到线程使用事件，将返回指示线程计数的线程使用事件的ioctl调用，以使线程池中的线程数可以被动态调整以处理线程计数。

6. 发明授权

US07363369B2 Monitoring thread usage to dynamically control a thread pool 失效
标题翻译：监控线程使用情况，以动态控制线程池
公开(公告)号：US07363369B2
公开(公告)日：2008-04-22
申请号：US10687236
申请日：2003-10-16
申请人： Dwip N. Banerjee , Kavitha Vittal Murthy Baratakke , Vinit Jain , Venkat Venkatsubra
发明人： Dwip N. Banerjee , Kavitha Vittal Murthy Baratakke , Vinit Jain , Venkat Venkatsubra
IPC分类号： G06F13/00
CPC分类号： G06F9/5027 , G06F9/544 , G06F2209/5018 , G06F2209/508
摘要： A method, system, and program for monitoring thread usage to dynamically control a thread pool are provided. An application running on the server system invokes a listener thread on a listener socket for receiving client requests at the server system and passing the client requests to one of multiple threads waiting in a thread pool. Additionally, the application sends an ioctl call in blocking mode on the listener thread. A TCP layer within the server system detects the listener thread in blocking mode and monitors a thread count of at least one of a number of incoming requests waiting to be processed and a number of said plurality of threads remaining idle in the thread pool over a sample period. Once the TCP layer detects a thread usage event, the ioctl call is returned indicating the thread usage event with the thread count, such that a number of threads in the thread pool may be dynamically adjusted to handle the thread count.
摘要翻译：提供了一种用于监视线程使用以动态控制线程池的方法，系统和程序。在服务器系统上运行的应用程序调用侦听器套接字上的侦听器线程，以便在服务器系统上接收客户端请求，并将客户端请求传递给线程池中等待的多个线程之一。此外，应用程序在侦听器线程上以阻塞模式发送ioctl调用。服务器系统内的TCP层以阻塞模式检测侦听器线程，并且监视等待被处理的多个传入请求中的至少一个的线程计数，并且线程池中的多个线程在一个样本上保持空闲期。一旦TCP层检测到线程使用事件，将返回指示线程计数的线程使用事件的ioctl调用，以使线程池中的线程数可以被动态调整以处理线程计数。

7. 发明授权

US07742419B2 Method, system and article for improved TCP performance during packet reordering 失效
标题翻译：方法，系统和文章，用于在数据包重排序期间改进TCP性能
公开(公告)号：US07742419B2
公开(公告)日：2010-06-22
申请号：US12101765
申请日：2008-04-11
申请人： Kavitha Vittal Murthy Baratakke , Vinit Jain , Vasu Vallabhaneni , Venkat Venkatsubra
发明人： Kavitha Vittal Murthy Baratakke , Vinit Jain , Vasu Vallabhaneni , Venkat Venkatsubra
IPC分类号： H04L1/00
CPC分类号： H04L29/06 , H04L69/16 , H04L69/161 , H04L69/163
摘要： TCP congestion avoidance is implemented upon retransmission of a packet and is reverted back to the original congestion state upon receipt of an early acknowledgement (ACK), indicating reordering of packets, thereby eliminating a needless restriction on TCP bandwidth. Upon receiving an ACK to a retransmitted packet, it is determined if the ACK resulted from receipt of the original reordered packet or the retransmitted packet, based on the arrival time of the ACK at the sender. If the round-trip-time (RTT) for the retransmitted packet is much lower than the average or current calculated RTT for the network link between sender and receiver, then the retransmission occurred as a result of a reordering event, and the congestion window is restored back to its value prior to the retransmission, thereby permitting the network link to continue operating at its original increased throughput.
摘要翻译： TCP拥塞避免在分组重传时实现，并且在接收到指示重新排序分组的早期确认（ACK）时被恢复到原始拥塞状态，从而消除对TCP带宽的不必要的限制。在向重传的分组接收到ACK时，基于ACK在发送方的到达时间确定ACK是否从接收到原始重新排序的分组或重传分组而产生。如果重发分组的往返时间（RTT）远低于发送方和接收方之间的网络链路的平均或当前计算的RTT，则重新发送作为重排序事件的结果，拥塞窗口为在重传之前恢复其值，从而允许网络链路以其原始增加的吞吐量继续运行。

8. 发明申请

US20050286455A1 Method and apparatus for multicast tunneling for mobile devices 失效
标题翻译：用于移动设备的组播隧道的方法和装置
公开(公告)号：US20050286455A1
公开(公告)日：2005-12-29
申请号：US10875897
申请日：2004-06-24
申请人： Lilian Fernandes , Vinit Jain , Vasu Vallabhaneni , Venkat Venkatsubra
发明人： Lilian Fernandes , Vinit Jain , Vasu Vallabhaneni , Venkat Venkatsubra
IPC分类号： H04J3/24 , H04L12/18 , H04L12/28 , H04L12/56 , H04L29/06
CPC分类号： H04L47/24 , H04L12/189 , H04L45/16 , H04W4/06 , H04W40/00 , H04W80/04
摘要： The present invention provides a method and apparatus for multicast tunneling for mobile devices. The method comprises receiving a multicast packet directed to a plurality of mobile nodes, the mobile nodes being associated with a home subnet and identifying if any of the plurality of the mobile nodes are coupled to a subnet other than the home subnet, wherein each of the identified mobile nodes has an associated transmission path through which that mobile node can be reached. The method further provides that in response to determining that at least some of the mobile nodes are coupled to the subnet other than the home subnet, determining which of the identified mobile nodes has a common next hop in their associated transmission path and generating a packet including at least a portion of the multicast packet and including in the packet a list of mobile nodes that have the common next hop. The method further provides for transmitting the generated packet to the common next hop.
摘要翻译：本发明提供一种用于移动设备的组播隧道的方法和装置。所述方法包括：接收指向多个移动节点的多播分组，所述移动节点与归属子网相关联，并且识别所述多个所述移动节点中的任一个是否耦合到除所述归属子网之外的子网，其中，识别的移动节点具有相关联的传输路径，通过该路径可以到达该移动节点。该方法进一步规定，响应于确定至少一些移动节点被耦合到除了归属子网之外的子网，确定所识别的移动节点中哪一个在其相关联的传输路径中具有共同的下一跳，并且生成包括所述多播分组的至少一部分并且在分组中包括具有公共下一跳的移动节点的列表。该方法进一步提供将生成的分组发送到公共下一跳。

9. 发明申请

US20070291759A1 APPARATUS AND METHOD OF SPLITTING A DATA STREAM OVER MULTIPLE TRANSPORT CONTROL PROTOCOL/INTERNET PROTOCOL (TCP/IP) CONNECTIONS 失效
标题翻译：多种传输控制协议/互联网协议（TCP / IP）连接分析数据流的设备和方法
公开(公告)号：US20070291759A1
公开(公告)日：2007-12-20
申请号：US11778036
申请日：2007-07-14
申请人： Deanna Brown , Vinit Jain , Vasu Vallabhaneni , Venkat Venkatsubra
发明人： Deanna Brown , Vinit Jain , Vasu Vallabhaneni , Venkat Venkatsubra
IPC分类号： H04L12/56
CPC分类号： H04L45/00 , H04L29/06 , H04L45/24 , H04L47/10 , H04L47/34 , H04L69/14 , H04L69/16 , H04L69/161 , H04L69/166
摘要： A method, system and apparatus for improving data transfer rate over a network are provided. When a piece of data is to be transmitted to a target system, it is divided into a number of packets and a determination is made as to whether the number of packets exceeds a threshold number. If so, the packets are transferred in parallel over a plurality of network connections. The ideal network connections are TCP/IP connections. Thus, each packet has an IP header, which contains an IP identification field. An indicium is placed into the IP identification field for proper reconstruction of the data by the target system.
摘要翻译：提供了一种用于提高网络上的数据传输速率的方法，系统和装置。当一条数据要发送到目标系统时，将其分成多个分组，并确定分组数是否超过阈值数。如果是这样，则分组在多个网络连接上并行传送。理想的网络连接是TCP / IP连接。因此，每个分组具有包含IP标识字段的IP报头。将标记放入IP识别字段，以便目标系统正确重建数据。

10. 发明申请

US20060268851A1 Method and apparatus for address resolution protocol persistent in a network data processing system 审中-公开
标题翻译：用于地址解析协议的方法和装置在网络数据处理系统中持久存在
公开(公告)号：US20060268851A1
公开(公告)日：2006-11-30
申请号：US11126121
申请日：2005-05-10
申请人： Kavitha Vittal Baratakke , Vinit Jain , Vasu Vallabhaneni , Venkat Venkatsubra
发明人： Kavitha Vittal Baratakke , Vinit Jain , Vasu Vallabhaneni , Venkat Venkatsubra
IPC分类号： H04L12/56
CPC分类号： H04L29/12009 , H04L29/12018 , H04L61/10
摘要： A method, apparatus, and computer instructions for transferring data in a network data processing system. Data is transferred to a destination in which an address resolution protocol entry is used to transfer this data to the destination. A determination is made as to whether the address resolution protocol entry will expire within a selected threshold while transferring data to the destination. If the address resolution protocol will expire within the selected threshold, the address resolution protocol entry is kept or retained to reduce the interruptions or delays in the transferring of the data.
摘要翻译：一种用于在网络数据处理系统中传送数据的方法，装置和计算机指令。数据被传送到目的地，其中使用地址解析协议条目将该数据传送到目的地。在将数据传送到目的地时，确定地址解析协议条目是否将在选定的阈值内到期。如果地址解析协议在选定的阈值内到期，则保留或保留地址解析协议条目，以减少数据传输中的中断或延迟。

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