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    • 9. 发明授权
    • Routing method and routing path recovery mechanism in wireless sensor network environment
    • 无线传感器网络环境中的路由方法和路由恢复机制
    • US07983207B2
    • 2011-07-19
    • US12485113
    • 2009-06-16
    • Jun-Yu LaiKuei-Li HuangJui-Tang WangChien-Chao TsengChao-Nan Wu
    • Jun-Yu LaiKuei-Li HuangJui-Tang WangChien-Chao TsengChao-Nan Wu
    • H04H20/71
    • H04W40/02H04L45/22H04L45/28H04W40/248
    • The present invention discloses an asymmetric routing method and routing path recovery mechanism. The wireless sensor network environment includes at least a management unit, at least a gateway, and mobile nodes. When joining, each mobile node obtains an unique ID code and, additionally, a depth as the gradient to the management unit. Accordingly, a mobile node sends an uplink packet via a nearby node with lower depth to the management unit; while the management unit transmits a downlink packet to a mobile node by utilizing the source route method. When the parent node of a mobile node is damaged or moves to another position or said mobile node with its sub-tree descendants changes their position together, the uplink routing path is recovered via selecting a nearby node of the sub-tree as relay node and the downlink routing path is recovered via sending a control message to the management unit.
    • 本发明公开了一种不对称路由选择方法和路由恢复机制。 无线传感器网络环境至少包括管理单元,至少网关和移动节点。 当加入时,每个移动节点获得唯一的ID码,并且另外获得作为管理单元的梯度的深度。 因此,移动节点经由具有较低深度的附近节点向管理单元发送上行链路分组; 而管理单元通过利用源路由方法向移动节点发送下行链路分组。 当移动节点的父节点被损坏或移动到另一位置或者其子树后代的移动节点将它们的位置一起改变时,通过选择子树的附近节点作为中继节点来恢复上行链路路由路径, 通过向管理单元发送控制消息来恢复下行链路路由路径。