Benefit-driven handoffs between WMAN and WLAN

The future wireless Internet is expected to consist of different types of wireless networks with different coverage range. The hybrid network of WLAN and WMAN can take advantage of them to offer high quality service. In this paper, we propose a handoff manager scheme to make handoffin IEEE 802.16 and IEEE 802.11 hybrid networks. The proposed algorithm is a fuzzy logic based benefit-driven algorithm that can adapt itself with the dynamic conditions of the hybrid networks. The scheme can reduce the access delay, unnecessary handoff probability and aid the handoff decision for better connectivity. This handoff algorithm has much better performance than conventional algorithms and can be extended to other heterogeneous networks.