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11 条记录 (耗时 0.031 秒)

    Fair sharing of multi-access channels
    1.
    发明授权
    Fair sharing of multi-access channels 有权
    公平分享多路访问频道

    公开(公告)号：US07317686B2

    公开(公告)日：2008-01-08

    申请号：US10242051

    申请日：2002-09-12

    申请人： Sneha Kasera ,  Ramachandran Ramjee ,  Danny Raz ,  Yuval Shavitt ,  Prasun Sinha

    发明人： Sneha Kasera ,  Ramachandran Ramjee ,  Danny Raz ,  Yuval Shavitt ,  Prasun Sinha

    IPC分类号： H04J1/16

    CPC分类号： H04L47/10 ,  H04L47/20

    摘要： A network node computes a fair share data rate for the sharing of a shared communication channel in a local area network. The network node determines the required information for computing the fair share by snooping the network, by receiving the required information from other network nodes, or a combination of the two techniques. Alternatively, instead of computing the fair share data rate, the network node may receive the fair share data rate which was computed by another network node. The fair share data rate is enforced by the network node in a network protocol stack layer above the media access control layer. In one embodiment, the network protocol stack layer above the media access control layer is the link layer.

    摘要翻译： 网络节点计算用于在局域网中共享共享通信信道的公平共享数据速率。 网络节点通过窥探网络，通过从其他网络节点接收所需信息或两种技术的组合来确定计算公平共享所需的信息。 或者，代替计算公平共享数据速率，网络节点可以接收由另一个网络节点计算的公平共享数据速率。 公平共享数据速率由媒体访问控制层上方的网络协议栈层中的网络节点实施。 在一个实施例中，媒体访问控制层之上的网络协议栈层是链路层。

    Robust Location Distinction Using Temporal Link Signatures
    2.
    发明申请
    Robust Location Distinction Using Temporal Link Signatures 有权
    使用时间链接签名的强大的位置区分

    公开(公告)号：US20100207732A1

    公开(公告)日：2010-08-19

    申请号：US12676492

    申请日：2008-09-05

    申请人： Neal Patwari ,  Sneha Kasera

    发明人： Neal Patwari ,  Sneha Kasera

    IPC分类号： G06K7/01

    CPC分类号： G01S5/0252 ,  H04L63/1466 ,  H04W12/12 ,  H04W64/00 ,  H04W84/18 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/166 ,  Y02D70/22

    摘要： The ability of a receiver to determine when a transmitter has changed location is important for energy conservation in wireless sensor networks, for physical security of radio tagged objects, and for wireless network security in detection of replication attacks. In embodiments of the present invention, a measured temporal link signature is determined to uniquely identify the link between a transmitter and a receiver. The temporal link signature is an impulse response of a transmitted signal from the transmitter over a channel between the transmitter and a receiver over a channel. When the transmitter changes location, or if an attacker at a different location assumes the identity of the transmitter, the proposed link distinction methodology reliably detects the change in the physical channel. This detection can be performed at a single receiver or collaboratively by multiple receivers.

    摘要翻译： 接收机确定发射机何时改变位置的能力对于无线传感器网络中的节能，无线电标签对象的物理安全以及在复制攻击检测中的无线网络安全性而言是重要的。 在本发明的实施例中，确定测量的时间链路签名以唯一地标识发射机和接收机之间的链路。 时间链路签名是通过信道在发射机和接收机之间的信道上的来自发射机的发射信号的脉冲响应。 当发射机改变位置时，或者如果不同位置的攻击者假定发射机的身份，则建议的链路区分方法可以可靠地检测物理信道的变化。 该检测可以在单个接收机处执行，也可以由多个接收器协作执行。

    Robust location distinction using temporal link signatures
    6.
    发明授权
    Robust location distinction using temporal link signatures 有权
    使用时间链接签名的强大的位置区分

    公开(公告)号：US08989764B2

    公开(公告)日：2015-03-24

    申请号：US12676492

    申请日：2008-09-05

    申请人： Neal Patwari ,  Sneha Kasera

    发明人： Neal Patwari ,  Sneha Kasera

    IPC分类号： H04W24/00 ,  G01S5/02 ,  H04W64/00 ,  H04L29/06 ,  H04W12/12 ,  H04W84/18

    CPC分类号： G01S5/0252 ,  H04L63/1466 ,  H04W12/12 ,  H04W64/00 ,  H04W84/18 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/166 ,  Y02D70/22

    摘要： The ability of a receiver to determine when a transmitter has changed location is important for energy conservation in wireless sensor networks, for physical security of radio tagged objects, and for wireless network security in detection of replication attacks. In embodiments of the present invention, a measured temporal link signature is determined to uniquely identify the link between a transmitter and a receiver. The temporal link signature is an impulse response of a transmitted signal from the transmitter over a channel between the transmitter and a receiver over a channel. When the transmitter changes location, or if an attacker at a different location assumes the identity of the transmitter, the proposed link distinction methodology reliably detects the change in the physical channel. This detection can be performed at a single receiver or collaboratively by multiple receivers.

    摘要翻译： 接收机确定发射机何时改变位置的能力对于无线传感器网络中的节能，无线电标签对象的物理安全以及在复制攻击检测中的无线网络安全性而言是重要的。 在本发明的实施例中，确定测量的时间链路签名以唯一地标识发射机和接收机之间的链路。 时间链路签名是通过信道在发射机和接收机之间的信道上的来自发射机的发射信号的脉冲响应。 当发射机改变位置时，或者如果不同位置的攻击者假定发射机的身份，则建议的链路区分方法可以可靠地检测物理信道的变化。 该检测可以在单个接收机处执行，也可以由多个接收器协作执行。

    Method and system for detecting unauthorized wireless access points using clock skews
    9.
    发明授权
    Method and system for detecting unauthorized wireless access points using clock skews 有权
    使用时钟偏差检测未授权无线接入点的方法和系统

    公开(公告)号：US09049225B2

    公开(公告)日：2015-06-02

    申请号：US13063687

    申请日：2009-09-11

    申请人： Suman Jana ,  Sneha Kasera

    发明人： Suman Jana ,  Sneha Kasera

    IPC分类号： H04L12/28 ,  H04L29/06 ,  H04W12/12

    CPC分类号： H04L63/1441 ,  H04W12/12

    摘要： Identifying valid wireless access points based on clock skews. A computing device receives plurality of frames, each including a corresponding timestamp, from a wireless access point. The computing device calculates transmit and receive offsets based on transmit and receive times of the plurality of frames, and also calculates differences between the transmit and receive offsets. The computing device also calculates a clock skew of a clock at the wireless access point based on a slope of the differences. The client computing device determines whether the wireless access point is an authorized wireless access point or an unauthorized wireless access point based on comparing the calculated clock skew with one or more known baseline clock skews of one or more authorized wireless access points.

    摘要翻译： 基于时钟偏差识别有效的无线接入点。 计算设备从无线接入点接收多个帧，每个帧包括对应的时间戳。 计算设备基于多个帧的发送和接收时间来计算发送和接收偏移，并且还计算发送和接收偏移之间的差异。 计算设备还基于差异的斜率计算无线接入点处的时钟的时钟偏差。 基于将计算出的时钟偏差与一个或多个授权无线接入点的一个或多个已知基准时钟偏差进行比较，客户计算设备确定无线接入点是否是授权的无线接入点或未经授权的无线接入点。

    Method and System for Detecting Unauthorized Wireless Access Points Using Clock Skews
    10.
    发明申请
    Method and System for Detecting Unauthorized Wireless Access Points Using Clock Skews 有权
    使用时钟偏差检测未经授权的无线接入点的方法和系统

    公开(公告)号：US20110222421A1

    公开(公告)日：2011-09-15

    申请号：US13063687

    申请日：2009-09-11

    申请人： Suman Jana ,  Sneha Kasera

    发明人： Suman Jana ,  Sneha Kasera

    IPC分类号： H04W24/00

    CPC分类号： H04L63/1441 ,  H04W12/12

    摘要： A new methodology that uses clock skews of a wireless local area network access point (AP) as its fingerprint to detect unauthorized APs quickly and accurately. The clock skew is determined from time synchronization function (TSF) timestamps sent out in beacon probes.

    摘要翻译： 使用无线局域网接入点（AP）的时钟偏差作为其指纹来快速准确地检测未经授权的AP的新方法。 时钟偏移由在信标探测器中发出的时间同步功能（TSF）时间戳确定。