A Study on Buffer Efficiency and Surround Routing Strategy in Delay Tolerant Network

Tolerant Network (DTN) is a kind of network with high latency and frequent disconnection. To guarantee the success of delivering a message to the destination and to make time cost as low as possible, routers in this kind of network (DTN) need to multi copy the message and store it longer than routers in other kinds of network. This paper focuses on the relation and reciprocity between routing and buffer efficiency in DTN. We implement a variant of Epidemic Routing, called Surround Routing. This kind of routing performs better than Epidemic Routing in buffer- limited conditions since buffer space is efficiently used.