Congestion Control Method Based on DRMR in Ad Hoc Network
Zhou Yuan, Guo Yong-hong · Journal of Chinese Computer Systems · 2006
Recently,the research of multicast routing protocol for the Ad hoc networks receives more attention to widely.But the problem of the congestion control must be solved before the large-scale deployment of multicast protocol.A number of multicast protocols for the Ad hoc networks have been proposed,Dynamic Ring based Multicast Routing protocol(DRMR)which is one of them,has a high data packet delivery ratio and low control overhead.But the congestion control does not be included in DRMR.In this paper,a solution of congestion control based on DRMR is presented,including congestion detection,feedback and sending packet rate controlling.The calculating formula of the control parameter and the algorithm of controlling are also given.The performances of the extended DRMR are simulated and evaluated with NS2.The results show that the extended DRMR assures preferably the quality of service in the situation of heavy load.