Sobre a Influência dos Nós Egoístas no Descarregamento de Tráfego com Redes Oportunistas

• Claiton Luiz Soares UFF / IFTM
• Igor Monteiro Moraes UFF

DOI: https://doi.org/10.5753/sbseg.2016.19319

Abstract

The cellular infrastructure is overloaded because of the increasing number of mobile devices and applications. A solution to tackle this problem is to offload the network traffic by using an alternative network as a secondary communication channel. Several studies in the literature propose to employ opportunistic networks as this secondary channel. To be effective, however, opportunistic communication relies that nodes cooperate each other in order to forward messages and to confirm to the infrastructure the successful reception of messages sent by other nodes. In this paper, we evaluate the impact of selfish nodes on the performance of the traffic offloading with opportunistic networks. Selfish are those nodes that do not forward messages to other nodes or do not send acknowledgments to the infrastructure or combine both behaviors. Results show the offloading efficiency decreases from 70% to up to 18% if selfish nodes are in the network.

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