QoS Aware Resource Allocation in NOMA-based Multibeam Satellite IIoT

Unfortunately, traditional ground-based IIoT cannot deliver wireless connections everywhere because of its restricted communication coverage. This paper presents a multibeam satellite IIoT in Ka-band that use different types of network-oriented multiple access (NOMA) for each beam to boost the data throughput, allowing for both widespread coverage and long-distance data transfers. In order to guarantee Quality of Service (QoS) for the satellite IIoT, the beam power is adjusted such that the theoretical transmission rate is equal to the service rate. To maximise the NOMA transmission rate for each beam, we optimise the power allocation of each node within the constraints of the total power for the beam and the minimum transmission rate for each node inside the beam. An alternative to relying only on satellite coverage in uninhabitable regions is to use satellite-ground integrated IIoT, which makes use of the cellular network on the ground. Network selection and power allocation are proposed as ways to reduce transmission costs for the integrated IIoT. The benefits of adopting NOMA in the satellite IIoT are shown by simulation results, which show increased transmission for the allocation of resources that assures QoS.