Rotation multiple-channel allocation scheme for seamless handoff in IEEE 802.11 WLANs

IEEE 802.11 Wireless LANs can provide broadband wireless data services without dealing with a cable in a limited area. However, when a MS moves to a neighboring AP, it has significant constraints on seamless mobile services. In this paper, we propose a rotational multiple-channel allocation scheme to manage mobility between APs that are equipped with multiple wireless interfaces, prohibiting from using the same channel as neighboring APs simultaneously. Performance evaluations show that the proposed scheme can achieve low handoff delay.