Abstract: Ad hoc network is a new type of wireless network without router.The ever-increasing concerns on Ad hoc networks promots the research of the relevant technology,and promots its gradual move towards practical application.The author discusses the present situation of the research on Ad hoc network routing,the requirements and applications of routing protocol;and at the same time it focuses on key technologies,features and applications of Ad hoc network routing protocol based on on-demand distance vector and the best link-state which has been passed by IESG and become RFC standard.

Key words: Ad hoc network, routing protocol, node