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Multihop/Direct Forwarding (MDF) for Static Wireless Sensor Networks

机译:静态无线传感器网络的多跳/直接转发(MDF)

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The success of Wireless Sensor Networks (WSNs) depends largely on efficient information delivery from target areas toward data sinks. The problem of data forwarding is complicated by the severe energy constraints of sensors in WSNs. In this work, we propose and analyze a data forwarding scheme, termed Multihop/Direct Forwarding (MDP), for WSNs where sensor nodes forward data traffic toward a common data sink. In the MDF scheme, a node splits outgoing traffic into at most two branches: one is sent to a node that is h units away; the other is sent directly to the data sink. The value of h is chosen to minimize the overall energy consumption of the network. The direct transmission is employed to balance the energy consumption of nodes at different locations and to avoid the so-called hot spot problem in data forwarding. In order to calculate its traffic splitting ratio, a node only needs to know the distance toward the common data sink and that of the farthest node. Our analytical and simulation results show that the MDF scheme performs close to, in terms of energy efficiency and network lifetime, the optimum data forwarding rules, which are more complex and computation intensive.
机译:无线传感器网络(WSN)的成功很大程度上取决于从目标区域到数据接收器的有效信息传递。无线传感器网络中传感器的严格能量约束使数据转发问题变得复杂。在这项工作中,我们提出并分析了一种用于WSN的数据转发方案,称为多跳/直接转发(MDP),在WSN中,传感器节点将数据流量转发到公共数据接收器。在MDF方案中,节点将传出流量最多分为两个分支:一个发送到距离h个单位的节点;另一个发送到h个单位。另一个直接发送到数据接收器。选择h的值可最大程度地减少网络的总体能耗。直接传输被用来平衡不同位置的节点的能量消耗并避免数据转发中的所谓热点问题。为了计算其流量分配比率,一个节点仅需要知道到公共数据接收器的距离和最远节点的距离。我们的分析和仿真结果表明,就能量效率和网络寿命而言,MDF方案的性能接近最佳数据转发规则,后者更加复杂且计算量大。

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