Date Added: Sep 2010
In this paper, the authors propose an incentive system to stimulate the nodes' cooperation in multi-hop wireless networks. Reducing the number and the size of the payment receipts is essential for practical implementation of an incentive system due to the high frequency of low-value transactions. First, the receipts' number is reduced by generating one fixed-size receipt per session instead of generating a receipt per packet or group of packets, and different receipts are aggregated to a reduced-size receipt. Second, reactive receipt submission mechanism is proposed to reduce the submitted receipts' number and protect against collusion attacks.