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There are several uplink scheduling algorithms in IEEE 802.16 systems, such as unsolicited grant service (UGS) and real-time polling service (rtPS), which can be used for voice over IP (VoIP) services. But these algorithms have a problem of energy wasting. To solve this problem, we propose an energy saving based uplink scheduling algorithm for VoIP services. Then we analyze the performance of the...
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...
Saving energy is an important issue in IEEE 802.16e Broadband Wireless Access (BWA) networks. Sleep-mode operation in the IEEE 802.16e effectively saves energy consumption in order to extend life time of a Mobile Subscribe Station (MSS). However, frame response delay is another important performance metric. The constraint is that the sleep- mode operation can reduce consumed energy, but it must guarantee...
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