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Recent years have witnessed an explosive growth of wireless technologies and applications. Coupled with the widespread implementation of wired Internet, at a global scale, new kinds of multimedia applications were developed and implemented. Contrary to the scenario of voice applications, typical of 2G and 2.5G cellular networks, these new applications are both energy and bandwidth consuming. Without disruptive new approaches for energy saving, 4G mobile users will relentlessly be searching for power outlets rather than network access, and become once again bound to a single location.
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