公开(公告)号：US07496477B2

公开(公告)日：2009-02-24

申请号：US11927248

申请日：2007-10-29

申请人： Archan Misra ,  Rajeev Shorey ,  Wen Hu

发明人： Archan Misra ,  Rajeev Shorey ,  Wen Hu

IPC分类号： G06F17/40 ,  G06F19/00 ,  G05B13/00 ,  G05B15/00 ,  G05B99/00

CPC分类号： H04Q9/00 ,  G01D1/18

摘要： A system and method for providing energy-efficient support of continuous aggregate queries in a sensor network by efficiently orchestrating the collection and transmission of data gathered by a collective set of sensors to ensure conformance to a specified QoI bound. To ensure this, the sink communicates a potentially different value of precision range or interval to each individual sensor, the sensor is adapted to only report its samples back to the sink if the sample values fall outside this specified range. An additional way to specify temporally varying precision ranges to an individual sensor or groups of sensors is provided without having to explicitly communicate the precision bounds for these different time instants. Using temporally varying precision ranges permits the exploitation of temporal correlation among the sample values recorded by an individual sensor to further reduce the need for reports from the sensors. This approach is more energy-efficient and improves performance of long-running pervasive environment monitoring applications.

摘要翻译： 一种用于通过有效地协调由一组传感器收集的数据的收集和传输来确保符合指定的QoI约束来在传感器网络中提供连续聚合查询的能量效率支持的系统和方法。 为了确保这一点，接收器将精确范围或间隔的潜在不同值传达给每个单独的传感器，如果采样值落在该指定范围之外，则传感器仅适用于将其样品返回到接收器。 提供了一种为单个传感器或传感器组指定时间上变化的精度范围的附加方式，而不必明确地传达对于这些不同时刻的精确范围。 使用时间上不同的精度范围允许利用单个传感器记录的样本值之间的时间相关性，以进一步减少对传感器报告的需要。 这种方法更节能，并提高长期运行的普及环境监测应用的性能。

公开(公告)号：US20080052041A1

公开(公告)日：2008-02-28

申请号：US11927248

申请日：2007-10-29

申请人： Archan Misra ,  Rajeev Shorey ,  Wen Hu

发明人： Archan Misra ,  Rajeev Shorey ,  Wen Hu

IPC分类号： G06F15/00

CPC分类号： H04Q9/00 ,  G01D1/18

摘要： A system and method for providing energy-efficient support of continuous aggregate queries in a sensor network by efficiently orchestrating the collection and transmission of data gathered by a collective set of sensors to ensure conformance to a specified QoI bound. To ensure this, the sink communicates a potentially different value of precision range or interval to each individual sensor, the sensor is adapted to only report its samples back to the sink if the sample values fall outside this specified range. An additional way to specify temporally varying precision ranges to an individual sensor or groups of sensors is provided without having to explicitly communicate the precision bounds for these different time instants. Using temporally varying precision ranges permits the exploitation of temporal correlation among the sample values recorded by an individual sensor to further reduce the need for reports from the sensors. This approach is more energy-efficient and improves performance of long-running pervasive environment monitoring applications.

摘要翻译： 一种用于通过有效地协调由一组传感器收集的数据的收集和传输来确保符合指定的QoI约束来在传感器网络中提供连续聚合查询的能量效率支持的系统和方法。 为了确保这一点，接收器将精确范围或间隔的潜在不同值传达给每个单独的传感器，如果采样值落在该指定范围之外，则传感器仅适用于将其样品返回到接收器。 提供了一种为单个传感器或传感器组指定时间上变化的精度范围的附加方式，而不必明确地传达对于这些不同时刻的精确范围。 使用时间上不同的精度范围允许利用单个传感器记录的样本值之间的时间相关性，以进一步减少对传感器报告的需要。 这种方法更节能，并提高长期运行的普及环境监测应用的性能。

公开(公告)号：US08090949B2

公开(公告)日：2012-01-03

申请号：US12047865

申请日：2008-03-13

申请人： Bhargav Ramchandra Bellur ,  Anitha Varghese ,  Rajeev Shorey ,  Srinivasan Rajavelu ,  Aditya R. Karnik

发明人： Bhargav Ramchandra Bellur ,  Anitha Varghese ,  Rajeev Shorey ,  Srinivasan Rajavelu ,  Aditya R. Karnik

IPC分类号： H04L9/32 ,  H04L29/06 ,  G01C21/00

CPC分类号： H04L9/3268 ,  H04L2209/80 ,  H04L2209/84 ,  H04W12/04

摘要： A system and method for assigning certificates and reducing the size of the certificate revocation lists in a PKI based architecture for a vehicle wireless communications system that includes separating a country, or other area, into geographic regions and assigning region-specific certificates to the vehicles. Therefore, a vehicle need only process certificates and certificate revocation lists for the particular region that it is traveling in. Vehicles can be assigned multiple certificates corresponding to more than one region in the vehicles vicinity as advance preparation for possible travel or transmission into nearby regions. Further, the expiration time of certificates assigned to vehicles corresponding to a given geographic region can be tailored to be inversely proportional to the distance from a registered home region of the vehicle. A scalable design for a back-end certifying authority with region-based certificates can also be provided.

摘要翻译： 一种用于为包括将国家或其他区域分离成地理区域并将区域特定证书分配给车辆的车辆无线通信系统的基于PKI的架构中的证书撤销列表的分配证书和减小证书吊销列表的大小的系统和方法。 因此，车辆只需要处理其正在行驶的特定区域的证书和证书撤销列表。可以为车辆附近的多个区域分配多个与多个区域相对应的证书，作为可能的旅行或传输到附近地区的预先准备。 此外，分配给对应于给定地理区域的车辆的证书的到期时间可以被定制成与从车辆的登记的家庭区域的距离成反比。 还可以提供具有基于区域的证书的后端认证机构的可扩展设计。

公开(公告)号：US07302362B2

公开(公告)日：2007-11-27

申请号：US11365215

申请日：2006-03-01

申请人： Archan Misra ,  Rajeev Shorey ,  Wen Hu

发明人： Archan Misra ,  Rajeev Shorey ,  Wen Hu

IPC分类号： G06F17/40 ,  G06F17/00

CPC分类号： H04Q9/00 ,  G01D1/18

摘要： A system and method for providing energy-efficient support of continuous aggregate queries in a sensor network by efficiently orchestrating the collection and transmission of data gathered by a collective set of sensors to ensure conformance to a specified QoI bound. To ensure this, the sink communicates a potentially different value of precision range or interval to each individual sensor; the sensor is adapted to only report its samples back to the sink if the sample values fall outside this specified range. An additional way to specify temporally varying precision ranges to an individual sensor or groups of sensors is provided without having to explicitly communicate the precision bounds for these different time instants. Using temporally varying precision ranges permits the exploitation of temporal correlation among the sample values recorded by an individual sensor to further reduce the need for reports from the sensors. This approach is more energy-efficient and improves performance of long-running pervasive environment monitoring applications.

公开(公告)号：US07065482B2

公开(公告)日：2006-06-20

申请号：US09860114

申请日：2001-05-17

申请人： Rajeev Shorey ,  Abhinav Kamra ,  Sundeep Kapila ,  Varun Khurana ,  Vikas Yadav

发明人： Rajeev Shorey ,  Abhinav Kamra ,  Sundeep Kapila ,  Varun Khurana ,  Vikas Yadav

IPC分类号： G06F15/173

CPC分类号： H04L43/00 ,  H04L43/026 ,  H04L43/062 ,  H04L43/0829 ,  H04L43/0847 ,  H04L43/0864 ,  H04L43/0882 ,  H04L43/0888 ,  H04L43/16

摘要： The present invention relates to a traffic analysis method and tool for a network based on TCP/IP or UDP/IP or a combination thereof comprising passive monitoring means at intermediate nodes of the network, and estimation means to determine a full set of network traffic metrics connected to said passive monitoring means.The instant invention also provides a configured computer program product for carrying out the above method.

公开(公告)号：US20090235071A1

公开(公告)日：2009-09-17

申请号：US12047865

申请日：2008-03-13

申请人： Bhargav Ramchandra Bellur ,  Anitha Varghese ,  Rajeev Shorey ,  Srinivasan Rajavelu ,  Aditya R. Karnik

发明人： Bhargav Ramchandra Bellur ,  Anitha Varghese ,  Rajeev Shorey ,  Srinivasan Rajavelu ,  Aditya R. Karnik

IPC分类号： H04L9/00

CPC分类号： H04L9/3268 ,  H04L2209/80 ,  H04L2209/84 ,  H04W12/04

摘要： A system and method for assigning certificates and reducing the size of the certificate revocation lists in a PKI based architecture for a vehicle wireless communications system that includes separating a country, or other area, into geographic regions and assigning region-specific certificates to the vehicles. Therefore, a vehicle need only process certificates and certificate revocation lists for the particular region that it is traveling in. Vehicles can be assigned multiple certificates corresponding to more than one region in the vehicles vicinity as advance preparation for possible travel or transmission into nearby regions. Further, the expiration time of certificates assigned to vehicles corresponding to a given geographic region can be tailored to be inversely proportional to the distance from a registered home region of the vehicle. A scalable design for a back-end certifying authority with region-based certificates can also be provided.

摘要翻译： 一种用于为包括将国家或其他区域分离成地理区域并将区域特定证书分配给车辆的车辆无线通信系统的基于PKI的架构中的证书撤销列表的分配证书和减小证书吊销列表的大小的系统和方法。 因此，车辆只需要处理其正在行驶的特定区域的证书和证书撤销列表。可以为车辆附近的多个区域分配多个与多个区域相对应的证书，作为可能的旅行或传输到附近地区的预先准备。 此外，分配给对应于给定地理区域的车辆的证书的到期时间可以被定制成与从车辆的登记的家庭区域的距离成反比。 还可以提供具有基于区域的证书的后端认证机构的可扩展设计。

公开(公告)号：US06975591B1

公开(公告)日：2005-12-13

申请号：US09718679

申请日：2000-11-22

申请人： Rajeev Shorey ,  Abhay Chrungoo ,  Vishu Gupta ,  Huzur Saran

发明人： Rajeev Shorey ,  Abhay Chrungoo ,  Vishu Gupta ,  Huzur Saran

IPC分类号： H04L12/24 ,  H04L29/06 ,  G01R31/08

CPC分类号： H04L43/0829 ,  H04L1/0002 ,  H04L1/187 ,  H04L41/5025 ,  H04L69/16 ,  H04L69/163 ,  H04W80/06

摘要： A method for improving TCP throughput over lossy communication links without affecting performance over non-lossy links comprises determining lookahead-loss which is the number of lost packets in a given loss-window; using the loss-window and lookahead-loss to detect congestion in the communication links; and controlling transmission under congestion conditions and under normal conditions, wherein the controlling transmission comprises controlling a size of the loss-window by beginning in a slow-start phase; advancing to a congestion avoidance phase when a slow-start threshold is reached; entering a halt growth phase when the first level of packet loss has been recovered; returning to the congestion avoidance phase when a first level of packet recovery occurs; entering a k-recovery phase when a second level of packet loss occurs. The loss window and slow-start threshold are reduced in half and returned to the congestion avoidance phase when the second level of packet loss has been recovered.

摘要翻译： 一种用于通过有损通信链路改善TCP吞吐量而不影响非有损链路的性能的方法包括确定在给定的丢失窗口中丢失分组数量的前瞻丢失; 使用丢失窗口和前瞻性丢失来检测通信链路中的拥塞; 以及在拥塞状况和正常条件下控制传输，其中所述控制传输包括通过从慢启动阶段开始来控制所述损失窗口的大小; 当达到慢启动阈值时，进入拥塞避免阶段; 当第一级数据包丢失已经恢复时进入停止增长阶段; 当发生第一级数据包恢复时返回到拥塞避免阶段; 当发生第二级丢包时进入k恢复阶段。 丢失窗口和慢启动阈值减少一半，并在第二级丢包恢复后返回到拥塞避免阶段。

公开(公告)号：US06807159B1

公开(公告)日：2004-10-19

申请号：US09696556

申请日：2000-10-25

申请人： Rajeev Shorey ,  Apurva Kumar ,  Indraneel Chakraborty ,  Abhishek Kashyap ,  Anupam Rastogi ,  Huzur Saran

发明人： Rajeev Shorey ,  Apurva Kumar ,  Indraneel Chakraborty ,  Abhishek Kashyap ,  Anupam Rastogi ,  Huzur Saran

IPC分类号： H04B7185

CPC分类号： H04W74/06 ,  H04L12/12 ,  H04W52/0212 ,  H04W52/0235 ,  Y02D70/144

摘要： A system, method, and computer program product for carrying out the method for managing power consumption in a master driven time division duplex wireless network comprising optimizing power consumption while maintaining quality of service requirements for end-to-end packet delay by adjusting the polling interval for each slave in low power mode based on the incoming traffic at the slave.

摘要翻译： 一种用于执行主驱动时分双工无线网络中的功耗管理方法的系统，方法和计算机程序产品，包括优化功耗，同时通过调整轮询间隔来维持端到端分组延迟的服务质量要求 基于来自从站的进入流量，对于每个从属设备，在低功耗模式下。

公开(公告)号：US06377805B1

公开(公告)日：2002-04-23

申请号：US09368120

申请日：1999-08-04

申请人： Dinesh Kashinath Anvekar ,  Manpreet Singh Dang ,  Amol Prakash ,  Rajeev Shorey

发明人： Dinesh Kashinath Anvekar ,  Manpreet Singh Dang ,  Amol Prakash ,  Rajeev Shorey

IPC分类号： H04Q720

CPC分类号： H04W36/08 ,  H04W84/18 ,  H04W88/04

摘要： A data communication for a handoff mobile unit is maintained by data forwarding through neighboring mobile units in indoor wireless cellular communication networks operates such that, when the master unit has no available channels, the mobile unit switches over to master status to create an ad hoc cell. The mobile unit then pages neighboring slave mobile units for data forwarding assistance. The mobile unit chooses one or more slave mobile units and establishes wireless links with the chosen slave mobile units. These chosen mobile units then have two masters; one the master unit of the cell and the other the handoff mobile unit which has created the ad hoc cell. A list of the slave mobile units in the ad hoc cell is sent to the network server, and data communication proceeds with data forwarding through the chosen mobile slave units. When a channel becomes available with the master unit for the cell, the handoff mobile unit becomes a slave mobile unit to the master unit and the ad hoc cell is dissolved.

摘要翻译： 通过在室内无线蜂窝通信网络中通过相邻移动单元的数据转发来维护用于切换移动单元的数据通信操作，使得当主单元没有可用信道时，移动单元切换到主状态以创建自组织小区 。 移动单元然后对相邻的从动单元进行页面数据转发协助。 移动单元选择一个或多个从属移动单元并与所选择的从属移动单元建立无线链路。 这些选择的移动单元然后有两个主人; 一个是小区的主单元，另一个是已经创建了自组织小区的切换移动单元。 Ad hoc小区中的从属移动单元的列表被发送到网络服务器，并且数据通信通过所选择的移动从属单元进行数据转发。 当信道对于小区的主单元可用时，切换移动单元变为主单元的从属移动单元，并且ad hoc小区被解散。

公开(公告)号：US08314718B2

公开(公告)日：2012-11-20

申请号：US12572514

申请日：2009-10-02

申请人： Skanda N Muthaiah ,  Rajeev Shorey

发明人： Skanda N Muthaiah ,  Rajeev Shorey

IPC分类号： G08G1/16

CPC分类号： H04L47/10 ,  H04L67/12 ,  H04L69/32 ,  H04W4/02 ,  H04W4/023 ,  H04W4/40 ,  H04W4/50 ,  H04W12/06

摘要： A method is provided for efficiently processing messages staged for authentication in a security layer of a protocol stack in a wireless vehicle-to-vehicle communication system. The vehicle-to-vehicle communication system includes a host vehicle receiver for receiving messages transmitted by one or more remote vehicles. The host receiver is configured to authenticate received messages in a security layer of a protocol stack. A wireless message broadcast by a remote vehicle is received. The wireless message contains characteristic data of the remote vehicle. The characteristic data is analyzed for determining whether the wireless message is in compliance with a predetermined parameter of the host vehicle. The wireless message is discarded prior to a transfer of the wireless message to the security layer in response to a determination that the wireless message is not in compliance with the predetermined parameter of the host vehicle. Otherwise, the wireless message is transferred to the security layer.

摘要翻译： 提供了一种用于在无线车对车通信系统中有效地处理在协议栈的安全层中进行认证的分段的消息的方法。 车辆对车辆通信系统包括用于接收由一个或多个远程车辆发送的消息的主车辆接收器。 主机接收器被配置为对协议栈的安全层中的接收到的消息进行认证。 接收由远程车辆广播的无线消息。 无线消息包含远程车辆的特征数据。 分析特征数据以确定无线消息是否符合主车辆的预定参数。 响应于确定无线消息不符合主车辆的预定参数，在将无线消息传送到安全层之前，无线消息被丢弃。 否则，无线消息被传送到安全层。