Efficient packet scheduling for heterogeneous multimedia provisioning over broadband satellite networks: An adaptive multidimensional QoS‐based design

Abstract

SUMMARYWith their inherent broadcast capabilities and reliable extensive geographical coverage, the broadband satellite networks are emerging as a promising approach for the delivery of multimedia services in 3G and beyond systems. Given the limited capacity of the satellite component, to meet the diverse quality of service (QoS) demands of multimedia applications, it is highly desired that the available resources can be adaptively utilized in an optimized way. In this paper, we draw our attention on the development and evaluation of an efficient packet scheduling scheme in a representative broadband satellite system, namely satellite digital multimedia broadcasting (SDMB), which is positioned as one of the most attractive solutions in the convergence of a closer integration with the terrestrial mobile networks for a cost-effective delivery of point-to-multipoint services. By taking into account essential aspects of a successful QoS provisioning while preserving the system power/resource constraints, the proposed adaptive multidimensional QoS-based (AMQ) packet scheduling scheme in this paper aims to effectively satisfy diverse QoS requirements and adaptively optimize the resource utilization for the satellite multimedia broadcasting. The proposed scheme is formulated via an adaptive service prioritization algorithm and an adaptive resource allocation algorithm. By taking into account essential performance criteria, the former is capable of prioritizing contending flows based on the QoS preferences and performance dynamics, while the latter allocates the resources, in an adaptive manner, according to the current QoS satisfaction degree of each session. Simulation results show that the AMQ scheme achieves significantly better performance than those of existing schemes on multiple performance metrics, e.g. delay, throughput, channel utilization and fairness.

Satellite Communications in the New Space Era: A Survey and Future Challenges

“…In [205], [206], the capacity region a multi-beam satellite with N time-varying downlink channels and N on-board output queues is established. In [207], the Satellite Digital Multimedia Broadcasting (SDMB) is investigated. Given the unidirectional nature of the SDMB system and the point-to-multipoint services it provides, the authors in [207] propose a novel adaptive multidimensional QoS-based (AMQ) packet scheduling scheme for provisioning heterogeneous services to provide better QoS guarantee while achieving more efficient resource utilization via an adaptive service prioritization algorithm.…”

“…In [207], the Satellite Digital Multimedia Broadcasting (SDMB) is investigated. Given the unidirectional nature of the SDMB system and the point-to-multipoint services it provides, the authors in [207] propose a novel adaptive multidimensional QoS-based (AMQ) packet scheduling scheme for provisioning heterogeneous services to provide better QoS guarantee while achieving more efficient resource utilization via an adaptive service prioritization algorithm. In [208], a novel channelaware scheduler scheme compliant with DVB-S2 is proposed which also considers the expedited delivery requirements for delay-sensitive packets.…”