Abstract
Low Earth Orbit (LEO) Satellites have been considered to expand the coverage of terrestrial networks, especially for collecting data from remote ground users unable to communicate directly with base stations (BSs). However, for reliable connectivity at specific data rates, a network over ground users with multiple LEO-Satellites is essential. To this end, in this paper, we study a LEO-Satellite network for integrated access and backhaul (IAB) in fifth generation (5G) and beyond systems, where a LEO-Satellite becomes an IAB node that is connected to other IAB nodes for backhaul transmissions and acts like a BS to ground users. Both the access network and backhaul are assume to be affected by large scale fading. Thus, terrestrial source transmits packets to the terrestrial destination via LEO-Satellite network. The proposed model is evaluated by analyzing the end-to-end packet transmission delay and propagation delay. Analytical formulas for transmission delay in both the access and backhaul networks are derived, and simulation results illustrate the system’s dependency to various parameters.