Routing hole optimization algorithm based on direction-angle in wireless multimedia sensor network
Yao Sun · Journal of Computer Applications · 2014
As a kind of pure location routing algorithm in Wireless Multimedia Sensor Network( WMSN), Two Phase Geographic Greedy Forwarding( TPGF) helps to select the next-hop node which is of nearest distance to the destination from neighbor ones. In some cases, the distance between the next-hop node and the destination node could be farther than that of the current node and the destination node; At the same time, by numbering the nodes, TPGF solves the problem of hole and satisfies the Quality of Service( QoS) requirements. In line with the strategy of selecting the next-hop node farther than the current node, action-angle variables and DAGF( Direction-Angle Greedy Forwarding) algorithm were introduced to guarantee and optimize the process of selecting the bound nodes. The simulation result indicates that DAGF algorithm shows better performance than TPGF in both energy consumption and end-to-end transmission delay and also has a significant effect on solving the problem of hole.