Revisiting P2P Content Sharing in Wireless Ad Hoc Networks

Abstract

Abstract. Classical content sharing applications like BitTorrent are not designed to run over wireless networks. When adapting them to these constrained networks, two main problems arise. On one hand, exchanging content pieces with far nodes results in an important routing overhead. On the other hand, it is necessary to send some content pieces to far nodes to increase the diversity of information in the network, which fosters reciprocity and parallel exchanges. In this paper, we study both of these problems and propose a joint solution for them. Unlike uni-metric approaches, our solution considers relevant performance metrics together as throughput, sharing and routing overhead. We define a new neighbor selection strategy that balances sharing and diversification efforts and decides on the optimal neighboring scope of a node. We also consider the diversification incentives problem and evaluates the impact of nodes' mobility on the P2P strategy to be adopted. Through extensive simulations, we prove that our solution achieves both better download time and sharing ratio than uni-metric solutions.

BIB-R: Uma Nova Adaptação do BitTorrent para Streaming de Vídeo sob Demanda ante Clientes Interativos em MANETs

“…As propostas mesclam modificações nas políticas de seleção de peers e de seleção de pedaços. Como exemplos, citam-se os seguintes dois trabalhos: [Sbai andBarakat 2009, Rethfeldt et al 2018]. Neste contexto, uma exceçãoé o trabalho de [Rodrigues and Rocha 2019a], que trata sobre streaming de vídeo sob demanda, mas não considera a interatividade do cliente.…”