Energy Minimization Schemes for Coordinator Selection in Machine to Machine Communications in different transmission power level

• Main Authors: Yen, Chia-Hung, 顏嘉宏
• Other Authors: Huang, Ching-Yao
• Format: Others
• Language: en_US
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/83365076748847406130

碩士 === 國立交通大學 === 電子工程學系 電子研究所 === 104 === In the machine to machine communication, the group based system is use of energy saving, resource allocation and quality of service. To implement a group based system, we group the machine devices together and communicate with base station by grouping algorithm and coordinator selection scheme. These modified algorithms are based on K-means, which is a low complexity algorithm. However, the modified algorithms have some existing problems; these problems will make the algorithm converge with the inefficient grouping result due to set amount of groups and without considering the different power level, because a machine device have not discovered a best coordinator to increase energy consumption in the system. In this thesis, since the machine devices are battery equipped with different power level, we focus on the uplink energy consumption of the system and propose an algorithm to solve the problems. Consequently, we also design circle pattern coordinator selection algorithm, which proposes to find a best coordinator for each machine devices to minimize energy consumption in the system.