专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US09281887B2 Method for topology control using sectorized antennas in wireless networks 有权
标题翻译：无线网络中使用扇形天线的拓扑控制方法
公开(公告)号：US09281887B2
公开(公告)日：2016-03-08
申请号：US13500475
申请日：2010-10-08
申请人： Theodoros Salonidis , Anand Prabhu Subramanian , Henrik Lundgren , Don Towsley
发明人： Theodoros Salonidis , Anand Prabhu Subramanian , Henrik Lundgren , Don Towsley
IPC分类号： H04M11/04 , H04B7/04 , H04W72/08 , H04W84/12 , H04W72/04 , H04W84/18
CPC分类号： H04B7/0491 , H04W72/0406 , H04W72/085 , H04W84/12 , H04W84/18
摘要： The invention concerns a method for optimizing antenna pattern assignment for a first wireless communication device forming a wireless network with at least one second wireless communication device, each of said communication device being equipped with a multi-sector antenna, an antenna pattern being a combination of said antenna sectors, said communication devices being adapted for sending a request and for receiving a response using a current antenna pattern assignment, said method comprising a step of: evaluating by said first communication device a first value; sending by said first communication device to said second communication device a broadcast request comprising said value receiving by said first communication device, a response to said broadcast request, said response being sent by said second communication device, said response depending on a second value evaluated by said second device; Switching or not, by said first communication device, to a new antenna sector assignment depending on said response; According to the invention the first value is evaluated by minimizing a first local function according to the received signal strength received by said first communication device having said current antenna pattern assignment and the second value is evaluated by minimizing a second local function according to the received signal strength received by said second communication device for its own current antenna pattern assignment.
摘要翻译：本发明涉及一种用于利用至少一个第二无线通信设备来优化形成无线网络的第一无线通信设备的天线方向图分配的方法，每个所述通信设备配备有多扇区天线，天线方向图是所述天线扇区，所述通信设备适于发送请求并使用当前天线方向图分配来接收响应，所述方法包括以下步骤：由所述第一通信设备评估第一值; 由所述第一通信设备向所述第二通信设备发送包括由所述第一通信设备接收的所述值的广播请求，对所述广播请求的响应，所述响应由所述第二通信设备发送，所述响应取决于由第二装置; 根据所述响应，由所述第一通信设备切换到不是新的天线扇区分配; 根据本发明，通过根据具有所述当前天线方向图分配的所述第一通信装置接收到的接收信号强度来最小化第一局部函数来评估第一值，并且通过根据接收信号最小化第二局部函数来评估第二值由所述第二通信设备接收的针对其本身的当前天线图案分配的强度。

2. 发明授权

US06661810B1 Clock skew estimation and removal 失效
标题翻译：时钟偏移估计和删除
公开(公告)号：US06661810B1
公开(公告)日：2003-12-09
申请号：US09273001
申请日：1999-03-19
申请人： Paul Skelly , Sue B. Moon , Don Towsley
发明人： Paul Skelly , Sue B. Moon , Don Towsley
IPC分类号： H04J307
CPC分类号： H04L43/0858 , H04J3/0664 , H04J3/0682 , H04L43/106
摘要： Provided herein is a linear programming-based algorithm to estimate the clock skew in network delay measurements based on one-way delay measurements. The algorithm has the time complexity of O(N), leaves the delay after the skew removal positive, and is robust in the sense that the error margin of the skew estimate is independent of the magnitude of the skew. The algorithm is understood to be unbiased, and the sample variance of the skew estimates is small.
摘要翻译：本文提供了一种基于线性规划的算法，用于基于单向延迟测量来估计网络延迟测量中的时钟偏差。该算法具有O（N）的时间复杂度，在偏移消除为正之后留下延迟，并且在偏差估计的误差容限与偏斜的幅度无关的意义上是鲁棒的。该算法被理解为无偏差，并且偏斜估计的样本方差较小。

3. 发明申请

US20120195225A1 METHOD FOR CHANNEL STATE MEASUREMENT IN MULTI-MODE MULTI-HOP WIRELESS NETWORKS 有权
标题翻译：多模多用途无线网络中的通道状态测量方法
公开(公告)号：US20120195225A1
公开(公告)日：2012-08-02
申请号：US13500507
申请日：2010-10-08
申请人： Theodoros Salonidis , Anand Prabhu Subramanian , Henrik Lundgren , Don Towsley
发明人： Theodoros Salonidis , Anand Prabhu Subramanian , Henrik Lundgren , Don Towsley
IPC分类号： H04W24/00
CPC分类号： H04W24/10 , H04W88/06
摘要： The invention concerns a method for measuring channel state information of multiple transmission/reception modes in a wireless network comprising a plurality of nodes, said modes being defined by frequency channels and/or antenna patterns, said wireless network comprising a MAC (Media Access Control) layer and every node comprising at least one MAC queue, comprising the steps of: periodically sending broadcast probe packets by at least one node called transmitter node, using a pre-determined and globally known period and predetermined sequence of transmission modes, each of said probe packets containing the transmission mode used for its transmission a sequence number of the transmission mode in the pre-determined sequence of transmission modes and a timestamp value containing the time said broadcast probe packet was buffered at the MAC queue of the transmitter node; measuring, by at least one second node called receiving node receiving a broadcast probe packet, channel state information of a transmission/reception mode for the link between the transmitter node and the receiving node; storing, by said receiving node, said measured transmission/reception mode for said link; using information contained in said received broadcast probe packet, by said receiving node, to determine its reception mode and the beginning and end time instants it will use this reception mode, in order to receive a further broadcast probe packet and measure the next transmission mode of transmitter node, during a next measurement period of transmitter node.
摘要翻译：本发明涉及一种用于在包括多个节点的无线网络中测量多个发送/接收模式的信道状态信息的方法，所述模式由频率信道和/或天线模式定义，所述无线网络包括MAC（媒体接入控制）层和包括至少一个MAC队列的每个节点，包括以下步骤：使用预定和全局已知的周期和预定的传输模式顺序周期性地由至少一个称为发射机节点的节点发送广播探测分组，每个所述探测包含用于其传输的传输模式的分组在预定的传输模式序列中的传输模式的序列号和包含所述广播探测分组的时间的时间戳值在所述发射机节点的MAC队列处被缓冲; 通过被称为接收节点的至少一个第二节点接收广播探测分组来测量发射机节点和接收节点之间的链路的发射/接收模式的信道状态信息; 由所述接收节点存储所述测量的所述链路的发送/接收模式; 使用由所述接收节点包含在所述接收的广播探测分组中的信息来确定其接收模式以及将使用该接收模式的开始和结束时刻，以便接收另外的广播探测分组并测量下一个传输模式发射机节点，在发射机节点的下一个测量周期。

4. 发明授权

US07085236B2 Active queue management for differentiated services 失效
公开(公告)号：US07085236B2
公开(公告)日：2006-08-01
申请号：US10151638
申请日：2002-05-20
申请人： Salomon Oldak , Wei-Bo Gong , Christopher V. Hollot , Don Towsley , Vishal Misra , Yossi Chait
发明人： Salomon Oldak , Wei-Bo Gong , Christopher V. Hollot , Don Towsley , Vishal Misra , Yossi Chait
IPC分类号： H04L12/28 , G01R31/08 , G06F15/16
CPC分类号： H04L47/193 , H04L47/10 , H04L47/12 , H04L47/215 , H04L47/2408 , H04L47/31 , H04L47/32
摘要： A method of regulating queuing delay in a network routing device independent of TCP loading is provided including receiving data packets, monitoring the data packets using token buckets and a Proportional and Integral (P+I) Active Queue Management (AQM) scheme, marking selected data packets falling within a profile, and adjusting flow preference of the monitored packets.

5. 发明授权

US07587761B2 Adaptive defense against various network attacks 有权
标题翻译：针对各种网络攻击的自适应防御
公开(公告)号：US07587761B2
公开(公告)日：2009-09-08
申请号：US11216972
申请日：2005-08-31
申请人： Nicholas Duffield , Weibo Gong , Don Towsley , Changchun Zou
发明人： Nicholas Duffield , Weibo Gong , Don Towsley , Changchun Zou
IPC分类号： G06F11/00 , G06F15/16
CPC分类号： H04L63/1408 , H04L63/1441 , H04L2463/141
摘要： An apparatus for optimizing a filter based on detected attacks on a data network includes an estimation means and an optimization means. The estimation means operates when a detector detects an attack and the detector transmits an inaccurate attack severity. The estimation means determines an accurate attack severity. The optimization means adjusts a parameter and the parameter is an input to a filter.
摘要翻译：基于检测到的对数据网络的攻击来优化过滤器的装置包括估计装置和优化装置。当检测器检测到攻击并且检测器发送不准确的攻击严重性时，估计装置进行操作。估计装置确定准确的攻击严重性。优化方法调整参数，参数是过滤器的输入。

6. 发明申请

US20060282894A1 Adaptive defense against various network attacks 有权
公开(公告)号：US20060282894A1
公开(公告)日：2006-12-14
申请号：US11216972
申请日：2005-08-31
申请人： Nicholas Duffield , Weibo Gong , Don Towsley , Changchun Zou
发明人： Nicholas Duffield , Weibo Gong , Don Towsley , Changchun Zou
IPC分类号： G06F12/14
CPC分类号： H04L63/1408 , H04L63/1441 , H04L2463/141
摘要： An apparatus for optimizing a filter based on detected attacks on a data network includes an estimation means and an optimization means. The estimation means operates when a detector detects an attack and the detector transmits an inaccurate attack severity. The estimation means determines an accurate attack severity. The optimization means adjusts a parameter and the parameter is an input to a filter.

7. 发明授权

US09125097B2 Method for channel state measurement in multi-mode multi-hop wireless networks 有权
标题翻译：多模多跳无线网络中信道状态测量的方法
公开(公告)号：US09125097B2
公开(公告)日：2015-09-01
申请号：US13500507
申请日：2010-10-08
申请人： Theodoros Salonidis , Anand Prabhu Subramanian , Henrik Lundgren , Don Towsley
发明人： Theodoros Salonidis , Anand Prabhu Subramanian , Henrik Lundgren , Don Towsley
IPC分类号： H04L1/00 , H04W24/10 , H04W88/06
CPC分类号： H04W24/10 , H04W88/06
摘要： The invention concerns a method for measuring channel state information of multiple transmission/reception modes in a wireless network comprising a plurality of nodes, said modes being defined by frequency channels and/or antenna patterns, said wireless network comprising a MAC (Media Access Control) layer and every node comprising at least one MAC queue, comprising the steps of:periodically sending broadcast probe packets by at least one node called transmitter node, using a pre-determined and globally known period and predetermined sequence of transmission modes, each of said probe packets containing the transmission mode used for its transmission a sequence number of the transmission mode in the pre-determined sequence of transmission modes and a timestamp value containing the time said broadcast probe packet was buffered at the MAC queue of the transmitter node; measuring, by at least one second node called receiving node receiving a broadcast probe packet , channel state information of a transmission/reception mode for the link between the transmitter node and the receiving node; storing, by said receiving node, said measured transmission/reception mode for said link; using information contained in said received broadcast probe packet, by said receiving node to determine its reception mode and the beginning and end time instants it will use this reception mode, in order to receive a further broadcast probe packet and measure the next transmission mode of transmitter node, during a next measurement period of transmitter node.
摘要翻译：本发明涉及一种用于在包括多个节点的无线网络中测量多个发送/接收模式的信道状态信息的方法，所述模式由频率信道和/或天线模式定义，所述无线网络包括MAC（媒体接入控制）层和包括至少一个MAC队列的每个节点，包括以下步骤：使用预定和全局已知的周期和预定的传输模式顺序周期性地由至少一个称为发射机节点的节点发送广播探测分组，每个所述探测包含用于其传输的传输模式的分组在预定的传输模式序列中的传输模式的序列号和包含所述广播探测分组的时间的时间戳值在所述发射机节点的MAC队列处被缓冲; 通过被称为接收节点的至少一个第二节点接收广播探测分组来测量发射机节点和接收节点之间的链路的发射/接收模式的信道状态信息; 由所述接收节点存储所述测量的所述链路的发送/接收模式; 由所述接收节点使用包含在所述接收的广播探测分组中的信息来确定其接收模式以及将使用该接收模式的开始和结束时刻，以便接收另外的广播探测分组并测量发射机的下一个传输模式节点，在发射机节点的下一个测量周期。

8. 发明授权

US06691312B1 Multicasting video 有权
标题翻译：组播视频
公开(公告)号：US06691312B1
公开(公告)日：2004-02-10
申请号：US09527656
申请日：2000-03-17
申请人： Subhabrata Sen , Don Towsley , Zhi-Li Zhang , Jayanta Kumar Dey
发明人： Subhabrata Sen , Don Towsley , Zhi-Li Zhang , Jayanta Kumar Dey
IPC分类号： H04N7173
CPC分类号： H04N21/6405 , H04N7/165 , H04N21/23406 , H04N21/23418 , H04N21/2402 , H04N21/2662 , H04N21/64769
摘要： A method of multicasting video to multiple client nodes via intermediate nodes that includes accessing video information descriptive of the video to be multicast, accessing information describing a distribution tree of nodes from a source of the video to the multiple clients nodes via one or more internetwork nodes, accessing rate constraints of nodes in the distribution tree, accessing buffer allocations of the nodes in the distribution tree, and determining one or more smoothed transmission schedules for each node in the distribution tree based on the accessed video information, the accessed information describing the distribution tree, the accessed rate constraints of nodes in the distribution tree, and the accessed buffer allocations of the nodes in the distribution tree, the one or more transmission schedules describing the transmission of video data to one or more children nodes.
摘要翻译：一种经由中间节点将视频组播到多个客户端节点的方法，所述中间节点包括访问描述要组播的视频的视频信息，通过一个或多个互联节点访问描述节点的分布树从信息源到多个客户端节点的信息访问分布树中的节点的速率约束，访问分布树中的节点的缓冲器分配，以及基于所访问的视频信息确定分布树中每个节点的一个或多个平滑的传输调度，描述分布的所访问的信息树，分发树中的节点的访问速率约束以及分布树中节点的访问缓冲器分配，描述将视频数据传输到一个或多个子节点的一个或多个传输调度。

9. 发明申请

US20120202432A1 METHOD FOR TOPOLOGY CONTROL USING SECTORIZED ANTENNAS IN WIRELESS NETWORKS 有权
标题翻译：在无线网络中使用分割天线的拓扑学控制方法
公开(公告)号：US20120202432A1
公开(公告)日：2012-08-09
申请号：US13500475
申请日：2010-10-08
申请人： Theodoros Salonidis , Anand Prabhu Subramanian , Henrik Lundgren , Don Towsley
发明人： Theodoros Salonidis , Anand Prabhu Subramanian , Henrik Lundgren , Don Towsley
IPC分类号： H04B15/00 , H04B17/00
CPC分类号： H04B7/0491 , H04W72/0406 , H04W72/085 , H04W84/12 , H04W84/18
摘要： The invention concerns a method for optimizing antenna pattern assignment for a first wireless communication device forming a wireless network with at least one second wireless communication device, each of said communication device being equipped with a multi-sector antenna, an antenna pattern being a combination of said antenna sectors, said communication devices being adapted for sending a request and for receiving a response using a current antenna pattern assignment, said method comprising a step of: evaluating by said first communication device a first value; sending by said first communication device to said second communication device a broadcast request comprising said value receiving by said first communication device, a response to said broadcast request, said response being sent by said second communication device, said response depending on a second value w evaluated by said second device; Switching or not, by said first communication device, to a new antenna sector assignment depending on said response; According to the invention the first value is evaluated by minimizing a first local function according to the received signal strength received by said first communication device having said current antenna pattern assignment and the second value w is evaluated by minimizing a second local function according to the received signal strength received by said second communication device for its own current antenna pattern assignment.
摘要翻译：本发明涉及一种用于利用至少一个第二无线通信设备来优化形成无线网络的第一无线通信设备的天线方向图分配的方法，每个所述通信设备配备有多扇区天线，天线方向图是所述天线扇区，所述通信设备适于发送请求并使用当前天线方向图分配来接收响应，所述方法包括以下步骤：由所述第一通信设备评估第一值; 由所述第一通信设备向所述第二通信设备发送包括由所述第一通信设备接收的所述值的广播请求，对所述广播请求的响应，所述响应由所述第二通信设备发送，所述响应取决于评估的第二值w 通过所述第二装置; 根据所述响应，由所述第一通信设备切换到不是新的天线扇区分配; 根据本发明，通过根据由具有所述当前天线方向图分配的所述第一通信设备接收到的接收信号强度来最小化第一局部函数来评估第一值，并且通过根据接收到的最小化第二局部函数来评估第二值w 由所述第二通信设备接收的针对其自己的当前天线模式分配的信号强度。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式