Physical layer security in mmWave cellular networks

Physical layer security in mmWave cellular networks

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Recent research has shown that millimetre wave (mmWave) communications can offer orders of magnitude increases in the cellular capacity. However, the physical layer secrecy performance of a mmWave cellular network has not been investigated so far. Leveraging the new path-loss and blockage models for mmWave channels, which are significantly different from conventional microwave channels, this chapter studies the network-wide physical layer security performance of the downlink transmission in a mmWave cellular network under a stochastic geometry framework. We first study the secure connectivity probability and the average number of perfect communication links per unit area in a mmWave network in the presence of non-colluding eavesdroppers. Then, the case of colluding eavesdroppers is studied. Numerical results demonstrate the network-wide secrecy performance, and provide interesting insights into how the secrecy performance is influenced by network parameters.

Chapter Contents:

  • 12.1 Introduction
  • 12.2 System model and problem formulation
  • 12.2.1 mmWave cellular system
  • BS and eavesdropper layout
  • Directional beamforming
  • Small-scale fading
  • Blockage model
  • Path-loss model
  • User association
  • 12.2.2 Secrecy performance metrics
  • 12.3 Secrecy performance of millimetre wave cellular networks
  • 12.3.1 Non-colluding eavesdroppers
  • Secure connectivity probability
  • Average number of perfect communication links per unit area
  • 12.3.2 Colluding eavesdroppers
  • Secure connectivity probability
  • Average number of perfect communication links per unit area
  • 12.4 Simulation result
  • 12.5 Conclusions
  • A. 1 AppendixA
  • B. 2 Appendix B
  • C. 3 Appendix C
  • D. 4 Appendix D
  • E. 5 Appendix E
  • References

Inspec keywords: cellular radio; stochastic processes; millimetre wave propagation; telecommunication security; probability

Other keywords: mmWave cellular networks; millimetre wave communications; blockage model; connectivity security probability; cellular capacity; stochastic geometry framework; network-wide secrecy performance; downlink transmission; path-loss model; mmWave channels; mmWave communications; physical layer security performance; noncolluding eavesdroppers; microwave channels

Subjects: Other topics in statistics; Mobile radio systems; Radiowave propagation

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