International Journal of Computer Applications
The Delay Tolerant Networks (DTNs) are networks where connectivity is intermittent because of the difficulties encountered in the environment such as climate, mobility, the breakdowns of energy, etc. To achieve a good delivery of data despite all these challenges, new network architecture was developed. This one consists on the addition of a supplementary layer in the OSI protocol stack, above the transport layer. This new policy is called: the bundle protocol. Its main role is to store data until an opportunity of transmission appears by using the Store and Forward technique and the concept of custody transfer.