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Joint Opportunistic Satellite Scheduling and Beamforming for Secure Transmission in Cognitive LEO Satellite Terrestrial Networks

  • Xi'an Jiaotong University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Security is a critical issue for cognitive LEO satellite terrestrial networks (CLSTNs) in the future 6G era. To guarantee the secure transmission of both the satellite and terristrial users under limited power budgets, we propose a joint opportunistic satellite scheduling and beamforming (BF) scheme for the CLSTN. Specifically, we formulate an optimization problem to maximize the secrecy energy efficiency (SEE) of the satellite user under the secrecy constraint of the base station (BS) user, the signal-to-interference plus noise ratio (SINR) requirements of the intended users and the limited power budgets of the transmitters. Since the formulated problem is complex and nonconvex, we first consider the achievable SEE of a given scheduled satellite and transform the original SEE maximization problem into a convex problem based on the Dinkelbach’s method and the difference of two-convex functions (D.C.) approximation method. Consequently, we propose a three-tier algorithm to jointly determine the satellite scheduling vector and the BF vectors of the satellite and BS. Simulation results verify the superiority of our proposed scheme over the existing schemes.

Original languageEnglish
Title of host publicationCommunications and Networking - 16th EAI International Conference, ChinaCom 2021, Proceedings
EditorsHonghao Gao, Jun Wun, Jianwei Yin, Feifei Shen, Yulong Shen, Jun Yu
PublisherSpringer Science and Business Media Deutschland GmbH
Pages65-79
Number of pages15
ISBN (Print)9783030991999
DOIs
StatePublished - 2022
Event16th EAI International Conference on Communications and Networking in China, ChinaCom 2021 - Virtual, Online
Duration: 21 Nov 202122 Nov 2021

Publication series

NameLecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST
Volume433 LNICST
ISSN (Print)1867-8211
ISSN (Electronic)1867-822X

Conference

Conference16th EAI International Conference on Communications and Networking in China, ChinaCom 2021
CityVirtual, Online
Period21/11/2122/11/21

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

Keywords

  • Cognitive LEO satellite terrestrial network
  • Physical layer security
  • Satellite scheduling scheme
  • Secrecy energy efficiency

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