A Study of QoS Management in Wireless Networks Using Mobile Router with Evolutionary Game Theory

摘要

In existing systems of mobile routers, CSMA/GA is generally used as the medium access control protocol. This means that in uplinks from wireless terminals to mobile routers, the frequency band is shared. The mobility of mobile routers causes local area networks (LANs) consisting of the mobile routers and wireless terminals to randomly interact among themselves. In this paper, a decentralized access control protocol in which mobile routers select the minimum contention window size is proposed. To guarantee the system performance, it is important to study the stable state of the system. A system with random interactions between numerous decision-making entities can be analyzed by using evolutionary game theory. In this study, a system of mobile routers and wireless terminals is modeled as an evolutionary game. Using evolutionary game theory, the condition for the existence of a stable state is obtained.