MQRP: QoS Attribute Decision Optimization for Satellite Network Routing

As an indispensable part of the global communication system, satellite networks are facing a sharp increase of service types and numbers, while users want more reliable and faster services, that is, more stringent QoS requirements. The traditional routing algorithm only considers the single QoS requirement which cannot meet the multi-QoS requirements of services, the priority relationship between different QoS requirements is neglected which will affect the overall utilization of the network. In this paper, the Multi-QoS Routing oPtimization algorithm (MQRP) is proposed which is based on PROMETHEE (preference ranking organization methods for enrichment evaluation). MQRP is based on the characteristics that different types of service on the satellite have difference link attribute requirements. The eigenvector method is used to set different QoS weight vectors for many kinds of services, and the link multi attribute evaluation index is constructed by the priority function and evaluation criterion. The attribute priority and priority index are used to establish the path evaluation model. Under different business requirements, the priority of each path of the feasible path concentration is evaluated, and then the Pareto optimal path is made. The simulation results show that the algorithm can distinguish between different QoS requirements and balance network traffic, and obviously improve the resource utilization rate of the network.