Traffic-control method of non-terrestrial network for actualizing concept of IOWN space integrated computing network

Abstract

This paper introduces a traffic-control method of non-terrestrial networks (NTNs) with geostationary orbit satellites, low earth orbit satellites and high altitude platform stations (HAPSs) for extending extreme cellular coverage in the beyond 5G and 6G era. NTNs use high frequency bands, for example, Ka and Q/V bands for feeder links. However, these frequency bands are affected by rain attenuation; thus the received signal in feeder links can degrade. To improve the availability of NTNs, we propose a traffic-control method with inter satellite/HAPS links (ISLs) for setting the network cost between ISLs on the basis of traffic congestion and propagation delay. Simulation results indicate that proposed method improves throughput and reduces delay, and data transfer successful rate is improved by 10% compared with non-traffic control.