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  • Insoo Sohn
  • 2016
For the past few years, there has been a growing interest in using the small world concept for optimizing wireless network topology. Even though, there are numerous review articles on the small world based on complex network theory, one might find it too theoretical for application to wireless network optimization research. In this paper we present basic(More)
Research on the integration of high altitude platform station (HAPS) with conventional 3G and future 4G mobile broadband communication networks has been increasing in the past few years due to various advantages the integrated system can offer. In this paper, we investigate a novel HAPS based mobile base station system using low altitude airship for high(More)
An important issue in the cellular industry is the rising energy cost and carbon footprint due to the rapid expansion of the cellular infrastructure. Greening cellular networks has thus attracted attention. Among the promising green cellular network techniques, the renewable energy-powered cellular network has drawn increasing attention as a critical(More)