This paper proposes an intelligent vertical handoff algorithm to maintain an ongoing call between a cellular mobile network and a Wireless Local Area Network （WLAN）, based on the Received Signal Strength （RSS） thr...This paper proposes an intelligent vertical handoff algorithm to maintain an ongoing call between a cellular mobile network and a Wireless Local Area Network （WLAN）, based on the Received Signal Strength （RSS） threshold and an adaptive RSS hysteresis generated by fuzzy logic. In addition, the proposed algorithm accounts for the WLAN traffic loading and the direction of movement and speed of the Mobile Station （MS）. Simulation results indicate that the proposed algorithm offers better system performance in terms of number of handoffs and probability of call dropping.展开更多
基金This workis supported by NSFC/RGCJoint Research Scheme(60318004 , N_HKU706/03) .
文摘This paper proposes an intelligent vertical handoff algorithm to maintain an ongoing call between a cellular mobile network and a Wireless Local Area Network （WLAN）, based on the Received Signal Strength （RSS） threshold and an adaptive RSS hysteresis generated by fuzzy logic. In addition, the proposed algorithm accounts for the WLAN traffic loading and the direction of movement and speed of the Mobile Station （MS）. Simulation results indicate that the proposed algorithm offers better system performance in terms of number of handoffs and probability of call dropping.
