Multi-Dimensional Resource Optimal Allocation Scheme for Tiansuan Constellation

With the advent of the 6G era, the construction of space networks is gradually entering a peak period. Tiansuan constellation came into being in this context, which aims to provide an open research platform for researchers. Tiansuan constellation can be used as the coverage supplement of terrestrial networks and the traffic supplement in hotspot areas, providing flexible, efficient, and seamless coverage of humanized services for global users. Satellite network resource management is more difficult than terrestrial network resource management due to the heterogeneity and difference in characteristics of satellite and terrestrial networks. This paper proposes a multi-dimensional network resource allocation algorithm for the Tian-suan constellation. Considering the limited storage resources and bandwidth resources of the satellite Internet, and taking into account the computing resources of the satellite Internet, the joint optimization of multi-dimensional resources is realized. The policy network-based reinforcement learning model is adopted to independently optimize the decision-making process of satellite Internet resource allocation. Compared with the two baseline algorithms, the proposed algorithm improves the network resource allocation profit and user service rate by 29.9% and 10.7%, respectively. In addition, the effectiveness and flexibility of the proposed scheme are verified by adjusting the storage resource requirements of users.

I. Introduction

The Russian-Ukrainian conflict that began in February 2022 has attracted worldwide attention. It is worth the attention of academia and industry that satellites are also active in this event. SpaceX provided Ukraine with Starlink services and a batch of Starlink terminals. It can be speculated that Starlink will play an important role in reconnaissance, detection, jamming, and attack. Starlink also restores instant communication capabilities to civilian areas damaged by war. For example, a Starlink terminal can provide communication services for a series of villages on a 10-kilometer road [1]. It cannot be ignored that the construction of satellite Internet has entered the fast lane. Major commercial companies have launched a considerable number of satellites to form their own satellite Internet. Musk's Starlink program has launched more than 2,900 satellites, and the number is expected to reach 12,000 by 2025. The UK's OneWeb programme has launched 428 satellites into low Earth orbit on its 10th anniversary. In addition, Russia, China, and Japan have launched hundreds of satellites for various purposes, ranking among the top in the world.