Buffer Scheduling Policy for Opportunitic Networks

In Delay Tolerant Networks (DTNs), the optimal use of buffer management polices can improve the network throughput. In this paper, we propose a buffer management strategy called as Message Drop Control (MDC). This technique controls the message drop by using an upper bound which is the count of buffered message at router and size of the messages. If count exceed the upper bound drop will not occurs else large size message will be dropped from queue. We examine the performance of proposed drop policy by comparing it with existing MOFO, DOA, and LIFO. The simulation results proves that MDC policy out perform well as existing ones in terms of delivery probability, message drop, overhead and buffer time average.