Abstract:

In order to improve the quality of service of mobile peertopeer networks, according to characteristics of P2P networks, a novel distributed collaborative caching method is proposed. By computing the popularity and the cost of accessing data, the data whcih have higher popularity and much lower access cost will be cached first. Thus, the network gets low service delay and communication cost, also the cooperation between mobile nodes and the promotion of availability and efficiency can be achieved. Simulation results show that the strategy can effectively reduce network overhead and delay, and obtain better performance.

Key words: mobile P2P networks;cooperative cache;popularity;cost