Packet scheduling in MIMO satellite long term evolution networks

摘要

This paper deals with the performance evaluation of different packet scheduling schemes for Long Term Evolutionudmobile satellite systems based on the adoption of a multi-user MIMO technique. The major breakthrough ofudMIMO technology in terrestrial networks has motivated the interest here for the adoption of MIMO in mobileudsatellite systems as well. In particular, a land mobile dual-polarized GEO satellite system has been consideredudin this work. The aim of this paper is to propose new cross-layer packet scheduling schemes that achieve a goodudtrade-off among throughput, QoS and fairness and to conduct performance comparisons with other schedulingudschemes in the literature. This is the reason why this paper also proposes a new performance index that can beudused to evaluate the overall performance of each scheduler. The work shows that the new cross-layer scheduler,udcalled channel-based queue sensitive scheduler, attains the best performance in terms of the new comprehensiveudperformance index, thus representing an interesting solution for future mobile satellite systems.