Load balancing in the integration of WLAN and cellular network based on fuzzy logic algorithm

Recently, the integration of WLAN network and cellular network is one of the most important research contents in wireless communications, and load balancing is the main technique and research highlight of such network. Compared with game theory, policy algorithm, gray analyses, fuzzy logic algorithm fits for the problem of multiple in multiple out in load balancing and enhance system robustness as well. Hence, in this paper, fuzzy logic algorithm is used to solve the load balancing problem, considering the following aspects: the bandwidth of the WLAN and cellular network that can still be used, the speed of the terminals and the changeable download rate. Simulation results show that fuzzy logic algorithm can allocate the bandwidth flexibly and achieve the goal of load balancing in WLAN and cellular heterogeneous network.