Enhanced Buffer Management Scheme to Avoid Congestion in Delay Tolerant Social Network

Delay tolerant networks (DTN) are kind of sparse networks in which end-to-end connectivity between source and destination is not always guaranteed. The Internet is the basic source of forwarding the traffic from source to destination. However, in rural areas, especially in developing countries; access to internet may not be available. Internet cannot be deployed in rural areas due to infrastructure and cost constraints. In most of routing protocols in DTN, the issue of utilizing buffer management scheme is not considered efficiently. The interest based approach and the metric TTL (time to live) for utilizing the buffer of nodes is not considered in case of social networks. In this paper the contribution is to enhance the existing buffer management schemes in order to increase the efficiency of network and also minimize the congestion in network. A proposed buffer management scheme will enhance efficiency and removing the congestion from network as well. The variable TTL will be used for deleting the data if the buffer of nodes get full. The data with less TTL will be deleted first and the threshold for deleting the data is 120 minutes max. In this approach in addition to data with less interest also get chance to reach to destination with minimizing the delay and increasing the delivery probability.