Research on mobile strategy of anchor node based on weighted virtual force model

• Published in: Tongxin Xuebao Vol. 38; pp. 97 - 107
• Main Authors: Lian-suo WEI, Shao-bin CAI, Shi PAN
• Format: Journal Article
• Language: Chinese
• Published: Editorial Department of Journal on Communications 25-06-2017
• Subjects: wireless sensor network;virtual force;mobile anchor node;mobile strategy
• DOI: 10.11959/j.issn.1000-436x.2017118
• ISSN: 1000-436X

The existing mobility strategy of the anchor node in wireless sensor network (WSN) has the shortcomings of too long moving path and low positioning accuracy when the anchor node traverses the network voids area.A new mobility strategy of WSN anchor node was proposed based on an improved virtual forces model.The number of neighbor nodes and the distance between the neighbor nodes to the anchor nodes were introduced as their own dense weight attributes.The unknown nodes intensity was used as weights to improve the traditional virtual force model.Meantime the distance-measuring error ε was taken into account.The optimal distribution,direction selection,shift step length and fallback strategy of anchor node could be analyzed by the trilateration.Using the number of virtual beacon received by the unknown node and the distance between the unknown node to the anchor node calculate the virtual force.Then according to the virtual force,the direction was chosen and the anchor nodes were moved.Simulation experiments sho