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M2M, which stands for communications between machines, offers various services today thanks to advanced communication networks and sensor systems. Also, a powerful terminal such as a smart phone provides sufficient physical environments, not requiring a special device for the services. However, the smart phone M2M environment involves various complex technologies, and there have been no clear policies or standards for the technology. This study, therefore, analyzes the current status of M2M service introduction and the trends in M2M application services using a smart phone. [ABSTRACT FROM AUTHOR]

M2M proposes a standardized communications technology between network and devices. This study has designed an M2M-based system to smoothly deliver information between devices which were required to provide hygienic meteorology services. Especially, an efficient plan for service provision has been studied, by classifying the types of information at each stage of user, EM, SM, HSM and SPM. [ABSTRACT FROM AUTHOR]

The IEEE 802.16e WMAN (Wireless Metropolitan Area Networks), which has been designed for fixed or mobile broadband wireless access, is getting into the spotlight as the base technology for the mobile Internet. As most mobile stations are battery-powered in wireless environment, energy efficient protocols are essential for their practical use. Although many systems, including the IEEE 802.16e, adopt the sleep mode, little attention has been paid to the traffic characteristics or status of the mobile station. In this paper, we propose a new scheme called Cumulative-TIM, in which BS(base station) does not wake up a mobile station until a sufficient amount of data for the station is stored, thus guaranteeing mobile stations sleep enough amount of time. In this way, mobile stations can use their energy more efficiently than the standard sleep mode: Our simulation result shows that proposed scheme has a better performance compare with the current standard of the WMAN. [ABSTRACT FROM AUTHOR]