store-carry-forward manner was designed and adopted for bundle propagation in delay tolerant networks (DTN).The transmission process is on the basis of the hypothesis that DTN nodes depend on each other and participate in cooperation honestly.However
as constrained with the limited communication and bandwidth resources
selfish nodes will usually deny cooperating
which degrades the performance of DTNs.To address the selfishness issue
a reputation-based incentive scheme is proposed for DTN to stimulate nodes to share resources and restrain misbehaving in this paper.An observation protocol is presented to observe other's behavior.A novel reputation model is proposed to determine the degree of trust
influence routing decision
and punish selfish nodes.The simulation results demonstrate the effectiveness of the proposed scheme.