Abstract
The paper addresses handoff management in a multifrequency code-division multiple-access system with nonuniform traffic loads over cells. We propose a new handoff scheme, adaptive handoff management (AHM), in which the intercell hard handoffs, which not only incur an equipment cost burden but also degrade call quality, are totally removed. Also strengthened in the AHM is the call-control capability of adaptively reflecting a changing traffic environment. Traffic and mobility analysis is first conducted on a single isolated cell with two concentric circle boundaries, thereby rendering two key performance measures. We then formulate a mathematical problem of finding the optimal parameters of the proposed AHM in which intracell hard handoffs are exploited most effectively. After reporting a simple solution process, computational experiments are conducted to illustrate the superiority of AHM in two key performance criteria.
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