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Journal of Information Science and Engineering, Vol. 36 No. 5, pp. 1093-1105

Efficiently Controlling Wireless Data Centers with Exact Topology Adjustment Strategy

State Key Laboratory of Networking and Switching Technology
Beijing University of Posts and Telecommunications
Beijing, 100876 P.R. China
E-mail: piliyi@126.com

As wireless transmission technology advances, wireless data centers (WDCs) are more and more widely used as computing infrastructures benefiting from its flexibility and low complexity of cabling. Software-defined networking (SDN) brings new convenience in topology design of wireless data center networks (DCNs) which has a great effect on the performance of data centers. In this paper, we introduce the controllability as a new consideration for wireless data center designers. We defined a new measure for controllability evaluation and compared the existing WDC architectures, uncovered their diversity on properties of dynamics. Then we propose a novel exact topology adjustment strategy to control WDCs more efficiently. Mathematical reasoning and experimental results show the correctness and effectiveness of our method. Our method can not only significantly improve the controllability of existing WDCs, but also applicable in accurate architecture design of wireless network systems.

Keywords: wireless data centers, software-defined networking, exact controllability, network topology design, topology adjustment

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