An Integrated Power Saving Scheduling Algorithm in IEEE 802.16e Wireless Metropolitan Area Networks
碩士 === 大同大學 === 資訊經營學系(所) === 96 === In mobile WiMAX (IEEE 802.16e), with the popularization of multimedia services, multicast and unicast services are coexisted in one mobile subscriber stations (MSS). In such network, power saving is a very important issue for battery powered mobile computing devi...
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2008
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| Online Access: | http://ndltd.ncl.edu.tw/handle/26511420971561292968 |
| Summary: | 碩士 === 大同大學 === 資訊經營學系(所) === 96 === In mobile WiMAX (IEEE 802.16e), with the popularization of multimedia services, multicast and unicast services are coexisted in one mobile subscriber stations (MSS). In such network, power saving is a very important issue for battery powered mobile computing devices. In this paper we have proposed a Multicast Services Based Scheduling (MSBS) algorithm that improves energy efficiency for both unicast and multicast services, and conforms QoS requirements of MSSs in 802.16e wireless networks. MSBS schedules as many MSSs as possible into adjacent interval of their multicast data transmission periods and combines the unicast data of the remaining MSSs based on their deadline. Our scheme controls packets based on a deadline for each packet determined from QoS parameters and reduces energy consumption of MSSs by minimizing the energy for switching. Simulation results show that, MSBS can produce significant overall energy saving and prolonged lifetime of the MSSs.
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