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Modeling Incentives for Collaboration in Mobile Ad Hoc Networks Jon Crowcroft, Richard Gibbens, Frank Kelly, Sven Östring What is the problem? • Networks – Mobile Ad Hoc, collaboration needed to form multi-hop routes • Pricing – to provide incentives for the collaboration, i.e. reward for forwarding traffic for other nodes • Modeling – apply existing rate control in wired networks, and resource control in wireless networks. UC Davis, ECS 289L Math! • subset of routes that originate at s • subset of routes that terminate at d • total flow from source s • Capacity usage: • Power consumed: UC Davis, ECS 289L More Math!! • Willing-to-pay: • Prices along the routes: • Credit balance: UC Davis, ECS 289L Simulations UC Davis, ECS 289L Static Networks Results (1) UC Davis, ECS 289L Static Networks Results (2) UC Davis, ECS 289L Dynamic Networks UC Davis, ECS 289L Dynamic Networks Results(1) UC Davis, ECS 289L Dynamic Networks Results(2) UC Davis, ECS 289L Dynamic Networks Results(3) UC Davis, ECS 289L Conclusions • Pricing schemes can recover the cost of resources at transit nodes • Further work: – delays in the network such as propagation delay; – interference need to be taken into consideration. UC Davis, ECS 289L