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    • 2. 发明申请
    • METHOD FOR PROXIMITY DETECTION IN A WIRELESS COMMUNICATION NETWORK
    • 无线通信网络中临近检测方法
    • WO2010025020A2
    • 2010-03-04
    • PCT/US2009053244
    • 2009-08-10
    • MOTOROLA INCGOLDBERG KEITH JBARKER CHARLES RDOEGE PETER BSTRUTT GUENAEL T
    • GOLDBERG KEITH JBARKER CHARLES RDOEGE PETER BSTRUTT GUENAEL T
    • H04W64/00G01S5/02
    • H04W64/003G01S5/0289G01S13/767H04W8/005
    • A method for proximity detection in a wireless communication network. A node attempts to determine the proximity of the closest neighboring node by transmitting a ranging request. Other nodes respond, and the first node to receive and respond to the request will have the shortest response time and thus will be the closest node. Exact ranges can be determined by applying Time-Of-Arrival (TOA) techniques to node response times. To further avoid collisions, one or more frames of the response messages can be same, making the multiple responses appear as multi-path. The group of responders can be narrowed and individual groups probed in a search pattern until the single nearest node is known or range of the nearest node is known. The ranging node may then use ordinary unicast mechanisms to probe this node, or begin scanning the groups again, or interleave the two mechanisms as desired.
    • 一种用于无线通信网络中的接近检测的方法。 节点尝试通过发送测距请求来确定最近邻近节点的邻近度。 其他节点响应,而接收和响应请求的第一个节点将具有最短的响应时间,因此将是最接近的节点。 可以通过将到达时间(TOA)技术应用于节点响应时间来确定精确范围。 为了进一步避免冲突,响应消息的一个或多个帧可以相同,使多个响应显示为多路径。 可以缩小响应者组,并且以搜索模式探索个体组,直到知道单个最近节点或者知道最近节点的范围。 然后,测距节点可以使用普通单播机制来探测该节点,或者再次开始扫描组,或者根据需要交织两个机制。
    • 7. 发明申请
    • METHOD AND DEVICE FOR TRANSMITTING GROUPCAST DATA IN A WIRELESS MESH COMMUNICATION NETWORK
    • 在无线网状通信网络中传输组数据的方法和装置
    • WO2009085717A2
    • 2009-07-09
    • PCT/US2008086909
    • 2008-12-16
    • MOTOROLA INCBARKER CHARLES RKORUS MICHAEL FSHATIL OHADZHENG HEYUN
    • BARKER CHARLES RKORUS MICHAEL FSHATIL OHADZHENG HEYUN
    • H04L29/06H04L12/22
    • H04L63/065H04W12/04H04W12/06
    • A method for transmitting groupcast data in a wireless mesh communication network as provided improves security of groupcast data. The method comprises processing, at a supplicant node, authentication handshake data received from an authenticator node, wherein the supplicant node is a next-hop neighbor of the authenticator node away from a root node. The supplicant node then stores a group transient key (GTK) received from the authenticator node. Next, the supplicant node processes authentication handshake data received from a third node, wherein the third node is a next-hop neighbor of the supplicant node away from the root node. The GTK is then transmitted from the supplicant node to the third node. Encrypted groupcast data are then generated at the supplicant node by using the GTK to encrypt groupcast data received from the authenticator node. Finally, the encrypted groupcast data are transmitted from the supplicant node to the third node.
    • 在所提供的无线网状通信网络中传输组播数据的方法提高了组播数据的安全性。 该方法包括在请求者节点处处理从认证器节点接收到的认证握手数据,其中该请求者节点是远离根节点的认证器节点的下一跳邻居。 请求方节点然后存储从认证方节点接收到的组临时密钥(GTK)。 接下来,请求者节点处理从第三节点接收的认证握手数据,其中第三节点是远离根节点的请求者节点的下一跳邻居。 GTK然后从请求方节点传输到第三个节点。 然后通过使用GTK来加密从认证器节点接收到的组播数据,在请求者节点处生成加密的组播数据。 最后,加密的组播数据从请求方节点传送到第三节点。