Congestion control for vehicular delay tolerant network routing protocols
Oham, Chuka Finbars (2014) Congestion control for vehicular delay tolerant network routing protocols. [Dissertation (University of Nottingham only)]
The Vehicular Delay Tolerant Network (VDTN) is a special and challenging type of the Delay Tolerant Network because of its high mobility, frequent disconnections and nodal congestion features. These challenging features make it prone to congestion which leads to a considerable amount of message drops in the network. To minimize the impact of congestion in the network, we designed and implemented the Congestion Aware Spray and Wait (CASaW) routing protocol. We varied the buffer sizes of the nodes and conducted multiple experiments using the VDTN routing protocols; the Congestion Aware Spray and Wait (CASaW), the Spray and Wait, the MaxProp, the Epidemic and the Prophet routing protocols. The results obtained after the experiments were used to evaluate the performance of the routing protocols in the congestion prone VDTN in terms of number of messages dropped and messages delivered.
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