An Efficient Transmission Protocol Based on Network Coding in Delay Tolerant Networks

In Delay Tolerant Networks, the delay of packets is long due to the intermittent connections caused by the mobility of nodes. Epidemic Routing Protocol can reduce the delay time and raise the packet delivery rate by replicating and spread copies of source packets in the networks, but it inevitably exhaust memory resources and network bandwidth. In this paper, we propose a network coding with limited buffer routing protocol. When a buffer of a node is full, two packets in the buffer are chosen randomly and encoded linearly together in to a packet to save buffer space and improve the performance in many-to-one communications.