多源多目的超宽带传感网生命周期的扩展律

Lifetime Scaling Law of Ultra wide Band Sensor Networks with Multi source and Multi destination

摘要:

推导了多源多目的跳时脉冲无线电超宽带(TH IR UWB)传感网生命周期的扩展律.假定源节点沿着最小能耗路由分别给nd个目的节点发送数据分组.结果表明多源多目的TH IR UWB传感网的生命周期上界与节点密度的α/2次方成正比.研究同时表明生命周期的上界与源节点数ns和每源节点包含的目的节点数nd均成反比，因此减小ns与nd的乘积能延长网络生命周期.而且当nd=1时，多源多目的TH IR UWB传感网生命周期的上界就变为多源单目的网络生命周期上界，其中Sink为所有ns个源节点的目的节点.

Abstract:

The lifetime scaling law of time hopping impulse radio ultra wide band (TH IR UWB) sensor networks with multi source, multi destination is derived. We suppose that each source node transmits data packets to its nd destination nodes along the minimum energy dissipation route respectively. The results indicate that the upper bound on the lifetime of TH IR UWB sensor network is in proportion to the α/2 order of the node density λ. The results also reveal that the upper bound on the lifetime decreases with the number of source nodes ns and the number of destination nodes nd per source node, thus reducing the product of ns and nd can improve lifetime of network. Furthermore, as ns=n and nd=1, the upper bound on lifetime of TH IR UWB sensor network with multi source, multi destination becomes that of mutli source, single destination network in which Sink is the only destination node for all ns source nodes.