Energy-efficient algorithms and evaluations for massive access management in cellular based machine to machine communications

• Main Authors: Tu, Chih-Yuan, 凃智元
• Other Authors: Huang, Ching-Yao
• Format: Others
• Language: en_US
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/95398519987312080513

碩士 === 國立交通大學 === 電子研究所 === 100 === As more and more machines are networked, machine-to-machine (M2M) communication have captured attention of IEEE 802.16 and 3GPP which, however, have only described possible system architecture, features, and issues, but no specification of M2M communication so far. Therefore, it is important for us to define the problems and provide solutions. Since most of the machine devices (MDs) are battery equipped, and the number of MD is expected to be significantly more than human population, there are two critical requirements in M2M communications, low uplink energy consumption (EC) and massive access management. In this thesis, we propose MD access control algorithms to ensure low uplink EC of M2M communication under the constraint of maximum number of access from MD to BS by implementing grouping and coordinator selection. Moreover, weighting factor which takes channel condition between the coordinator and base station (BS) into consideration is introduced to further improve EC performance. Finally, since EC of coordinator is dominant compared with EC of MDs, Newton Method is applied to implement power allocation on the coordinators to allocate the power resource better.