Challenges for efficient and seamless space-terrestrial heterogeneous networks

Jihwan P. Choi, Changhee Joo

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)


By interconnecting satellites in the sky with ground stations on earth, space-terrestrial networks can extend the coverage area and increase the throughput for both commercial and nonprofit applications. To realize the seamless and economic sky-to-earth networks, we still have to advance the technologies that bridge different types of channels, and find killer-applications that are essential for our life. In this article we review the current state-of-the-art technologies of multibeam satellites and relaying as fundamental cornerstones, and then address the issues of low-latency random access, mobility support, and multipath protocols for realizing a seamless heterogeneous network. We then illustrate two impactful applications: for emergency communication as a near-future and non-profit application, and for simultaneous transmission of information and power as a long-term application.

Original languageEnglish
Article number7105655
Pages (from-to)156-162
Number of pages7
JournalIEEE Communications Magazine
Issue number5
Publication statusPublished - 2015 May 1
Externally publishedYes

ASJC Scopus subject areas

  • Computer Science Applications
  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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