An Efficient Handoff Scheme Based on Intelligent Scan in IEEE 802.11 Wireless LANs

In this paper, a simple and efficient handoff scheme based on intelligent scan is proposed. Based on the intelligent scan scheme, a selection scheme is presented to help a mobile node select a desired next AP to handoff effectively. The analytical model and simulation are elaborated to show performance of the approaches. Detailed simulation results show that the proposed handoff scheme can not only handoff efficiently, but also provide considerable high hit ratio on the selection of the nearest AP among the next-AP candidates discovered by a mobile node.