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Dynamic spectrum sharing in hybrid satellite–terrestrial systems

Dynamic spectrum sharing in hybrid satellite–terrestrial systems

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The focus of this chapter is on dynamic spectrum sharing in hybrid satellite-terrestrial systems. We start by classifying the scenarios for these systems. The most important dynamic spectrum-sharing techniques such as spectrum sensing, databases, beamforming, beam hopping, and adaptive frequency and power allocation are discussed and their applicability in different scenarios is analysed. Interference analysis shows how Ka band sharing between satellite and terrestrial systems can be enabled. Autonomous ships are defined as an interesting emerging application area for hybrid satellite-terrestrial systems. In order to make them operate reliably and safely both close to shoreline and in deep sea, multiple communication technologies are needed. Interference management and spectrum-sharing techniques could be used, e.g. to prevent blocking or hijacking of the control signalling of a ship. In addition, we discuss shortly the citizens broadband radio service (CBRS) concept in the 3.5-GHz band. Ideas to use CBRS and other database techniques in millimetre wave bands to enable spectrum sharing between satellite and terrestrial components of a future 5G system are given.

Chapter Contents:

  • 17.1 Introduction
  • 17.2 Classification of hybrid satellite–terrestrial spectrum sharing scenarios
  • 17.2.1 Uncoordinated systems: coexistence of terrestrial and satellite
  • 17.2.2 Coordinated systems: coexistence of terrestrial and satellite
  • 17.3 Satellite band sharing techniques
  • 17.3.1 Spectrum sensing
  • 17.3.2 Spectrum databases
  • 17.3.3 Beamforming and smart antennas
  • 17.3.4 Beam hopping
  • 17.3.5 Frequency and power allocations
  • 17.3.6 Core network functionality
  • 17.4 Interference analysis
  • 17.5 Practical application scenarios
  • 17.5.1 Autonomous ships
  • 17.5.2 Citizens broadband radio service
  • 17.6 Future recommendations
  • 17.6.1 Spectrum sensing
  • 17.6.2 Spectrum databases
  • 17.6.3 Beamforming
  • 17.6.4 Beam hopping
  • 17.6.5 Frequency and power allocations
  • 17.6.6 Core network functionality and network slicing
  • 17.6.7 Implementation challenges
  • 17.7 Conclusions
  • References

Inspec keywords: array signal processing; radio spectrum management; signal detection; radiofrequency interference; satellite communication

Other keywords: interference management; citizens broadband radio service; millimetre wave bands; power allocation; beamforming; beam hopping; frequency 3.5 GHz; dynamic spectrum-sharing techniques; database techniques; future 5G system; interference analysis; CBRS; Ka band; multiple communication technologies; satellite-terrestrial systems; adaptive frequency; spectrum sensing; ship control signalling

Subjects: Electromagnetic compatibility and interference; Signal detection; Satellite communication systems

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