A new packet dropping policy in delay tolerant network

Packet dropping policies in delay tolerant network are mostly ignored during the years. However, it is shown that the traditional packet dropping policies can not work well in the DTN environment. In this paper we analyze the performance of the traditional packet dropping policies and proposed a new policy which drops packet according to its weight. Packet´s weight is calculated using historical information. Experiment results show that our new policy performs much better than traditional ones thus is good to be used in the delay tolerant network.