A kind of Ad hoc network stable routing protocol of emergency communication environment

Frequent changes of network topology may lead to frequent changes of routing, and instability of routing is one of important factors that cause descendent of Ad hoc performance. To address the application of Ad hoc network in emergency communication environment as disaster relief and military, as the neighbor nodes around some node are fixed in a certain period of time, based on analysis of solutions related to stable routing, the paper brought out a kind of routing stability index based on close degree of neighbor nodes, which does not require additional support of equipments and do not introduce additional overhead. OPNET simulation experiments show that the method can significantly reduce times of routing interrupt in emergency communication environment and improve network performance.