Research of network topological control algorithm in mWSN

Relying on this paper presented clustering mobile wireless sensor model, we use the topological control of the combination of the clustering hierarchical structure and sleep scheduling mechanism. Firstly, present a inner-cluster node scheduling algorithm solution of inner-cluster connectivity coverage problem, which can meet user’s expected coverage scale and high-efficiency, avoiding the influence of mobile node location. This algorithm based on coverage analysis theory, deducts smallest mobile nodes number of user’s expected coverage scale φ , realizes innercluster nodes optimal scheduling, which only select k nodes with higher energy and nearer close to fixed node, others should be sleeping. Consequently realizes the schedule of higher energy nodes round sleeping, and better adapt to the mobility of inner-cluster nodes. Then, the whole network use TDMA to uniformly divide the time slots to avoid the interrupt of inter-cluster and inner-cluster communication. The slot scheduling makes the half of cluster realize parallel work, and cross-layer design. Simulation result display by this schedule, EDG (Efficient Data Gathering) decreases data delay, and largely relieves the burden of cluster-head, and has apparent energy-saving effect, and thinks about node’s mobility, can preferably suit to mobile wireless sensor network.