Congestion control solution to avoid and remove congestion for delay-tolerant network
Lifeng Cao · Jisuanji yingyong yanjiu · 2013
In delay-tolerant network(DTN),limited resources(such as buffer,bandwidth etc.) of nodes are more easily used up,resulting in network congestion and network performance deceasing,because of its network characteristics and custody transfer mechanism.The standard TCP congestion control mechanism is not suitable for DTN.This paper proposed a novel congestion control solution to avoid and remove congestion for DTN.Congestion avoidance built DTN directed multi-path graph,divided and set constrain controls on link load,such as message sending and receiving rate and bandwidth usage,in order to increase the network source usage,according to the definiteness of transfer delay and transfer ability in a period of time short enough.Congestion removing combined storage transformation in nodes and message transfer between nodes,to remove DTN congestion on the basis of node storage resource division.The simulation results indicate that the proposed solution has better performance in message delivery rate,network overhead etc.,than other DTN congestion control mechanisms.