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Moving Beyond 4G Wireless Systems



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Moving Beyond 4G Wireless Systems Jim Martin Rahul Amin Ahmed Eltawil Amr Hussien School of Computing Clemson University Clemson SC USA jim martin cs clemson edu Department of Electrical and Computer Engineering University of California Irvine CA USA aeltawil uci edu Abstract As broadband data further blends with cellular voice mobile devices will become the dominant portals to the connected world However current design practices still involve building independent networks that each make their own resource decisions To move beyond 4G wireless networks will need to cooperate to provide better performing and more robust wireless services In this paper we present a cleanslate approach to wireless networking The approach requires the following assumptions to hold 1 Incentives are in place motivating independent autonomous wireless systems AWSs to cooperate with each other to provide users with universal broadband wireless coverage 2 In any given geographic area a handset might have access to many independent autonomous wireless networks 3 Mobile nodes will support a small number of adaptive radios that are capable of operating in a number of supported communication modes and over a range of spectrum With these liberating assumptions we present an architecture for a heterogeneous wireless system that moves beyond 4G systems We present preliminary results from a MATLABbased simulation designed to demonstrate the essence of the ideas We identify the key research challenges that must be addressed to move the idea from a concept to a viable network system Keywords heterogeneous wireless networks reconfigurable radios 4G wireless systems cyberinfrastructure I INTRODUCTION While advances at both the network layer and the physical layer are prompting unprecedented mobile broadband growth the means by which mobile terminals are offered services have created inefficiencies in both spectrum usage as well as mobile physical resources The premise behind this issue is that while



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