A joint energy-saving mechanism for M2M communications in LTE-based system

Machine-to-Machine (M2M) communication is rising to prominence in wireless networks. Besides the research hotspot on the random access (RA) overload solution, the energy consumption (EC) problem of massive synchronized machine type communications (MTC) devices should also be considered urgently. In this paper, a joint energy-saving mechanism is proposed for M2M communication, which composed of overload protection and resources allocation. The first phase is operated by clustering technology, which preliminary achieve a relatively minimum system EC. The second phase is executed by resources allocation to further minimize EC of M2M system. The analysis and simulation show that the joint control mechanism can perfectly minimize EC of M2M communication, which consistent with the concept of green communication. Furthermore, the introduction of overload protection scheme can greatly decrease RA blocking probability and largely minimize system signaling consumption, which consistent with the new proposed concepts of low-cost UE design in M2M system.