Physical Layer Security Enhancement for LEO Satellite Communications: Handoff Scheme

This paper investigates the physical layer security (PLS) problems of satellite-terrestrial links for LEO satellite communication systems, ultimately aiming to improve LEO satellite communications’ security. A scheme derived from the handoff process of LEO satellite communication system has been proposed to adapt special characteristics of LEO satellite channel, especially the time-varying and block fading in Land Mobile Satellite (LMS) channel. Through a series of simulations, the superiority of the proposed scheme compared with the traditional model could be illustrated.