QoE-aware bandwidth allocation method with GEO satellites cooperation in distributed constellation network

Abstract

This paper proposes a bandwidth allocation method in distributed constellation network, first introducing an economic link utility function, which quantifies Quality of Experience (QoE) satisfaction level of users as a combination of link reward and link cost. Then, a QoE-based resource allocation method is proposed for the efficient sharing of radio resources in circumstances of Geostationary Orbit (GEO) satellites cooperation, so that uplink system utility is maximized and the fairness between different satellites is also achieved. In multi-layered satellites scenario, we investigate the benefit of multiple uplink transmissions by multiple GEO satellites over a single transmission by a single GEO satellite at a time, which can be interpreted as network diversity. Meanwhile, we model the fact that the suitability of different networks to different users varies, which is seldom considered in previous literatures. Numerical results validate the performance enhancement of our scheme compared with the existing ones.