Routing in a many-to-one communication scenario in a realistic VDTN

Abstract

In this paper, we evaluate and compare the performance of different routing protocols in a many-to-one communication within a Vehicular Delay Tolerant Network (VDTN). Seven groups with three stationary sensor nodes sense the temperature, humidity and wind speed and send these data to a stationary destination node that collect them for statistical and data analysis purposes. Vehicles moving in Tirana city roads in Albania during the opportunistic contacts will exchange the sensed data to destination node. The simulations are conducted with the Opportunistic Network Environment (ONE) simulator. For the simulations we considered two different scenarios where the distance of the source nodes from the destination is short and long. For both scenarios the effect of node density, ttl and node movement model is evaluated. The performance is analyzed using delivery probability, overhead ratio, average latency, average number of hops and average buffer time metrics. The simulation results show that the increase of node density increases the delivery probability for all protocols and both scenarios, and better results are achieved when shortest-path map-based movement model is used. The increase of ttl slightly affects the performance of all protocols. By increasing the distance between source nodes and destination node, delivery probability is decreased almost 10% for all protocols, the overhead for sprayandwait protocol does not change, but for other protocols is slightly increased and the average number of hops and average latency is increased.

Connection Time Estimation between Nodes in VDTN

“…A priority-based scheduling and drop policy are proposed in this paper [29] along with a hybrid routing algorithm that routes messages which are scheduled built on priorities. Performance of routing protocols is being compared in this paper [30] while considering different parameters like time to live, distance (long and short) and a number of hops. Taking the routing decisions while maintaining privacy is considered in this paper [31] routing protocol named ePRIVO.…”

Performance Evaluation and Comparison of Cooperative Frameworks for IoT-Based VDTN

“…Relay nodes are stationary storage-capable devices positioned at junctions to increase the number of interactions among nodes in the network. By increasing the total number of delivered bundles and reducing the typical transmission delay, an increase in communication possibilities boosts network performance in general [19,20]. Bundles are kept in such nodes until a viable communication possibility is available to transfer them closer to their destination.…”