Mitigating routing misbehavior in mobile ad hoc networks
MobiCom '00 Proceedings of the 6th annual international conference on Mobile computing and networking
Core: a collaborative reputation mechanism to enforce node cooperation in mobile ad hoc networks
Proceedings of the IFIP TC6/TC11 Sixth Joint Working Conference on Communications and Multimedia Security: Advanced Communications and Multimedia Security
Proceedings of the 9th annual international conference on Mobile computing and networking
Stimulating cooperation in self-organizing mobile ad hoc networks
Mobile Networks and Applications
Proceedings of the 11th annual international conference on Mobile computing and networking
Nash Equilibria of Packet Forwarding Strategies in Wireless Ad Hoc Networks
IEEE Transactions on Mobile Computing
Self-policing mobile ad hoc networks by reputation systems
IEEE Communications Magazine
Pricing for enabling forwarding in self-configuring ad hoc networks
IEEE Journal on Selected Areas in Communications
Coalitions in Cooperative Wireless Networks
IEEE Journal on Selected Areas in Communications
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Cooperative forwarding in wireless networks has shown to yield rate and diversity gains, but it incurs energy costs borne by the cooperating nodes. In this paper we consider an incentive mechanism called Bandwidth Exchange (BE) where the nodes flexibly exchange the transmission bandwidth as a means of providing incentive for forwarding data, without increasing either the total bandwidth required or the total transmit power. The advent of cognitive radios and multicarrier systems such as Orthogonal Frequency Division Multiple Access (OFDMA) with the ability to flexibly delegate and employ a number of subcarriers makes this approach particularly appealing compared to other incentive mechanisms that are often based on abstract notions of credit and shared understanding of worth.We consider a N-node wireless network over a fading channel and use a Nash Bargaining Solution (NBS) mechanism to study the benefits of BE in terms of rate and coverage gains.We also propose two heuristic algorithms based on simple probabilistic rules for forwarding and study the tradeoffs in terms of performance among these approaches. Our results reveal that bandwidth exchange based forwarding can provide transmit power savings in OFDMA networks of at least 3dB compared to noncooperation.