These challenges need to be addressed, or otherwise it is not easy for this paradigm to gain trust of people. However, distinctive features in M2M communications form different challenges from those in human-to-human communications. As a result, M2M communication finds applications in wide areas such as smart grids, e-healthcare, home area networks, intelligent transportation systems, environmental monitoring, smart cities, and industrial automation. This communication paradigm facilitates ubiquitous communications with full mechanical automation, where a large number of intelligent devices connected by wired/wireless links, interact with each other without direct human intervention. Machine-to-Machine (M2M) communication is a promising technology for next generation communication systems.
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