Revenue-Rewarding Scheme for Cache Provided in Proxy Caching System of Media Stream
Alan T. S. Ip, Jiangchuan Liu · 2005
Network entities cooperating together can improve system performance of media streaming. However, the lack of participation incentive prohibits the deployment of such cooperative systems. In this paper, we address the incentive issue of a cooperative proxy caching system. We study the problem of what motivates each proxy to provide cache space to the system. To encourage proxies to participate, we suggest a revenue-rewarding scheme to credit the cooperative proxies according to the resources they contribute. Game-theoretic model is used to analyze the interactions among proxies under the revenue-rewarding scheme. Since no system-wide property is achieved in the non-cooperative environment, we suggest two cooperative game settings that lead to socially optimal situations, where the benefits of the network entities are maximized. The evaluation shows with the incentive mechanism incorporated, the proxies have a strong incentive to collaborate in the system, and the optimal net profit and social welfare are achieved in the cooperative resource allocation games.