QoN++: roteamento por qualidade dos nós com redução de sobrecarga em DTN

Abstract

This dissertation aims to reduce the overhead in Delay-Disruption Tolerant Networks. For this purpose, the QoN ++ algorithm is proposed - an extension of the QoN-ASW algorithm that uses the concept of Quality of Nodes to adjust the message forwarding strategy in a network, and considers message deliveries as events to be notified to other nodes in the network. The ONE simulator is used in conjunction with the Infocom06 trace file to simulate the QoN++ algorithm and compare its performance with QoN-ASW. For the experiments design, the 2kr Factorial model is used to study the effect of interactions of multiple factors on network overhead. In the performance analysis, we varied the buffer size of the nodes in a network, the number of message copies and their generation intervals. As a contribution of this work, the efficient buffer management provided by QoN++ stands out, offering a reduction in network overhead and an increase in message delivery rates, at the cost of a small increase in average delays.