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    • 50. 发明申请
    • Robust Routing of Data in Wireless Networks
    • 无线网络中数据的鲁棒路由
    • US20160072663A1
    • 2016-03-10
    • US14858252
    • 2015-09-18
    • University College Cork - National University of Ireland, Cork
    • Cormac J. SreenanJonathan BensonUtz Roedig
    • H04L12/24H04L12/751H04L12/721
    • H04L41/0654H04L45/02H04L45/021H04L45/28H04L45/32H04W40/14H04W40/24H04W40/26H04W84/18
    • A wireless network (1) comprises a base station (2) and sensor nodes (3). The base station (2) comprises a network interface (10), an application interface (11), topology control functions (12) a timer (13), and a buffer (14). Each sensor node (3) comprises a network interface (20), route control functions (21), processing functions (22), sensors (23), flood mechanism programs (24), tree mechanism programs (25), and data forwarding programs (26). The network operates by establishing a conventional routing tree from the sink node that is used when the network is stable. But when a sending node detects a node or link failure it dynamically switches to sending its data packets using a flooding mechanism, rather than waiting for the routing tree to be re-established. This reduces the latency for data delivery. Also, when flooding the data packets, it allows the packets to be flooded to nodes that are an equal number of hops from the sink node as the send node is from the sink node. This approach is suitable in situations where an obstacle causes the path between the sending node and the sink to be blocked, thus requiring a strategy in which packets are routed by less direct means. It increases the probability of delivery.
    • 无线网络(1)包括基站(2)和传感器节点(3)。 基站(2)包括网络接口(10),应用接口(11),拓扑控制功能(12),定时器(13)和缓冲器(14)。 每个传感器节点(3)包括网络接口(20),路由控制功能(21),处理功能(22),传感器(23),泛洪机制程序(24),树机制程序(25)和数据转发程序 (26)。 网络通过从网络稳定时使用的汇聚节点建立传统的路由树来进行操作。 但是当发送节点检测到节点或链路故障时,动态地切换到使用洪泛机制发送其数据包,而不是等待重新建立路由树。 这减少了数据传输的延迟。 此外,当洪泛数据分组时,它允许分组被洪泛到与汇聚节点相等数量的跳数的节点,因为发送节点来自汇聚节点。 这种方法适用于障碍物导致发送节点和接收器之间的路径被阻塞的情况,因此需要以较不直接的方式路由分组的策略。 它增加了交货的可能性。