Avaliação do consumo de energia em protocolos de roteamento para redes tolerantes a atrasos e interrupções.

Abstract

Delay and Disruption Tolerant Networks featuring a completely new architecture in the area of computer networks, where it discusses the concept of occasionally connected networks that may suffer frequent disconnections. Being a new area, it is constantly evolving, with new routing algorithms being created every day. However, when these are developed and compared with other existing, is rarely examined the power consumption of the device. This work presents a performance evaluation of routing protocols in this kind of network, considering mobile devices with limited power source (i.e., battery powered). In order to provide a more precise assessment, we used the Rakhmatov-Vrudhula battery model in the network simulations. Besides comparing routing protocols, we were able to compare the performance of the linear battery model (adopted by most mobile network simulators) with the more realistic Rakhmatov-Vrudhula battery model. The results indicate the superiority of the Rakhmatov Vrudhula battery model because it consider the effect of rate capacity and recovery effect from the battery. Although, it was found that the routing protocol Spray and Wait has scalable features and have a very low cost in it’s use, considering the consumption of the battery capacity.