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This paper proposes a novel vertical hand-off algorithm between WLAN and CDMA networks to enable the integration of these networks. The proposed vertical hand-off algorithm assumes a hand-off decision process (hand-off triggering and network selection). The hand-off trigger is decided based on the Received Signal Strength (RSS). To reduce the likelihood of unnecessary false hand-offs, the distance criterion is also considered. As a network selection mechanism, based on the wireless channel assignment algorithm, this paper proposes a context-based network selection algorithm and the corresponding communication algorithms between WLAN and CDMA networks.
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