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To conserve energy in IEEE 802.16e, earlier, we proposed maximizing unavailability interval (MUI) for type II power saving class (PSC). MUI is guaranteed to find the maximum unavailability interval. Therefore, energy consumption can be reduced significantly. In this paper, we further extend MUI for the mixture of Type I and Type II PSCs. The proposed eMUI still can achieve maximum unavailability interval...
In IEEE 802.16e system, mobile station (MS) is usually powered by battery. To save the limited power, IEEE 802.16e standard specifies sleep mode operation for power management. There are two significant performance metrics in sleep mode operation, one is energy consumption, the other is waiting delay. Our research is to shorten energy consumption and waiting delay. In this paper, a hybrid algorithm...
Sink mobility has become an increasingly important requirement of various sensor network applications. Handling such mobile sink conditions brings new challenges to large-scale sensor networking. This investigation proposed a hybrid-structure routing protocol (HSRP) that combines the benefits of grid-based and cluster-based structures. Grid-based structure is designed to solve the cluster head selection...
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