WSNs中优化移动信宿路径的数据收集算法

Data collection algorithm for optimizing mobile accommodation path in WSNs

收集数据是部署无线传感网络(WSNs)的根本目的。采用移动信宿策略可有效缓解WSNs的能耗问题,信宿的移动路径是该策略的关键。为此,提出基于伪驻留点的数据收集(VRDC)算法。VRDC算法先依据驻留点规划信宿路径,再依据路径选择伪驻留点(VRPs)。VRPs可通过一跳直接向移动信宿传输数据,而其他的节点则将数据传输至最近的VRPs,进而减少传输跳数,降低能耗。仿真结果表明,提出的VRDC算法能有效降低能耗,并平衡节点间的能耗。

Data collection is the fundamental purpose of deploying Wireless Sensor Networks(WSNs).The adoption of mobile accommodation strategy can effectively alleviate the problem of energy consumption of WSNs.The mobile path is the key of the strategy.Therefore,Virtual Rendezvous points-based Data Collecting(VRDC)algorithm is proposed in this paper.The VRDC algorithm first plans lodging paths based on the host Points,and then selects Virtual Rendezvous Points(VRPs)based on the host Points.VRPs can transmit data directly to the mobile address via one hop,while other nodes can transmit data to the nearest VRPs,thereby reducing the number of transmission hops and energy consumption.Simulation results show that VRDC algorithm can effectively reduce energy consumption and balance energy consumption among nodes.