A trajectory-aware vertical handoff algorithm
SoftCOM'09 Proceedings of the 17th international conference on Software, Telecommunications and Computer Networks
A QoS-based vertical handoff scheme for interworking of WLAN and WiMAX
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
An almost overhead-free error control scheme for IEEE 802.16-based multi-hop networks
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Wireless telemedicine services over integrated IEEE 802.11/WLAN and IEEE 802.16/WiMAX networks
IEEE Wireless Communications
Convergence architectures to achieve QoS for WiMAX and WiFi with high mobility support
International Journal of Wireless and Mobile Computing
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This paper addresses a movement-aware vertical (MAV) handover algorithm between WLAN and Mobile WiMAX for seamless ubiquitous access. An MAV handover algorithm is proposed in this paper to exploit movement pattern for avoiding unnecessary handovers in the integrated WLAN and Mobile WiMAX networks. If a mobile station (MS)'s velocity is high and its movement pattern is irregular, unnecessary handovers likely occur more frequently. Therefore, the MS velocity and moving pattern are important factors for the handover decision procedure. To avoid unnecessary handovers, the MAV handover algorithm adjusts the dwell time adaptively and predicts the residual time in the cell of target base station (BS). Consequently, the adaptive dwell timer of MAV handover algorithm allows an MS a better connection as long as possible. Our simulation results show that the reduction of unnecessary handovers by leads to significant throughput improvements.