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IEEE 802.16e standard for 4G Cellular Technology-Mobile WiMAX is proposed to support mobility. As a result, handover has become one of the most important QoS factors. Because of lack of clarification in the conventional algorithm for handover process, there exists wastage of channel resource along with undesired delay. Again, it causes significant degradation in the overall system performance. Existing standard for handover includes scanning as one of the most vital processes. But scanning requests without proper response and delayed initiation of scanning only deteriorates the scenario. In this paper, a modification of the scheduling process of scanning is proposed to reduce redundant scanning requests and overall handover operation delay.
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