Research On Location-aware Optimization Technology For Mobile Wireless Sensor Networks

Wireless sensor network is composed of a large number of sensor nodes deployed in monitoring area through multi hop and self-organized into a network,the maintenance is easy to build a relatively flexible,is widely used in many fields for.Sensor node localization is the foundation and foothold of many applications in real life.Planning the moving path of anchor nodes can improve the localization efficiency of wireless sensor networks,and the trajectory length and the node localization rate are the two important criteria to judge their path choice.In practical applications,we often deploy the sensor nodes in a random way.In the current algorithm,the path planning of mobile anchor nodes is very much related to the density distribution of nodes in the network,so that the latter can provide reference information for the movement of the former.In order to make the connection between them,the MAN-path planning algorithm for mobile anchor node path planning based on the node density distribution in network is proposed.The algorithm in the network initialization,respectively on the weight of each node in the network is calculated by comparing the weights of other nodes and the communication radius of the selected weight within the scope of their respective maximum communication nodes as the backbone nodes,each node in the network by traversing the backbone of the mobile anchor node and complete the positioning.On the basis of the backbone nodes,forming three virtual beacon nodes through mobile beacon node,analysis to determine the best value of beacon node distance and triangle spacing constitute communication radius,the completion of the spread in the ordinary nodes around the backbone node position estimation.The mobile anchor node path in the algorithm according to the node density dynamic changes in the network,to ensure that the mobile beacon node to node distribution ever more regions,eliminating redundant paths may appear in the static path planning algorithm,which improves the anchor node energy utilization rate,reduce the trajectory of anchor node moving path the length,and improve the positioning accuracy and the coverage rate of ordinary nodes.The simulation experiments show that the MAN-path planning algorithm is superior to other path planning algorithms.