ABSTRACT

In recent years, wireless and wired systems for communications between intelligent devices have been one of the fastest-growing research areas. Significant progress has been made in many domains, such as wireless sensor networks (WSNs), wireless body area networks (WBANs), and machine-to-machine (M2M) communications [1,2]. Typically, M2M refers to the communications between computers, embedded processors, smart sensors, actuators, and mobile devices with limited or without human intervention [3]. The rationale behind M2M communications is based on two observations: (1) a networked machine is more valuable than an isolated one, and (2) when multiple machines are interconnected, more autonomous and intelligent applications can be supported [4].