Study on space mission IP network QoS technologies

Abstract

This paper addresses the QoS technologies and strategies in space mission IP network. It is analyzed of the primary factors, including that causes congestion and influences the QoS performance. This paper aims to provide a top-level design on the QoS strategy and commits suggestions on the development of the QoS technologies in next generation space mission IP networks. With respect to the three potential congestion causes, i.e., excessive traffic access, unbalanced resource, and transmission mechanism, corresponding countermeasures are proposed. The QoS strategy of the space mission IP network is a systematic solution whose first role is to avoid congestion and guarantee the transmission with high priority when congestion occurs. The architecture of the QoS strategy of the space mission IP network can be summarized as a congestion avoidance mechanism based on traffic management, traffic output control, as well as additional service mechanisms. The congestion avoidance mechanism includes a set of strategies such as traffic policing, traffic shaping, and port rate limitation. The differential service mechanism includes a set of strategies such as service classification, priority marking, priority trust, and priority queue dispatch. With these strategies implemented, the end-to-end congestion management and QoS guarantee is achieved in the space mission IP network. © 2013 Tsinghua University Press, and Springer-Verlag.