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The wireless communication industry has witnessed a rapid increase in the number and type of wireless communication standards being developed, ranging from standards for cellular communication to standards for creating short-range personal area networks. At the same time, improvements in integrated circuit design and fabrication have enabled manufacturers of mobile systems to easily incorporate multiple wireless network interfaces (radios) onto their devices without significant cost implications. Recent work has shown that such multi-radio systems offer significant performance, reliability, and energy-efficiency benefits over single-radio systems if the multiple radios are used judiciously in a coordinated manner. However, properly managing a multi-radio system to realize these benefits is a challenging problem.
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