Cross-layer quality-driven adaptation for scheduling heterogeneous multimedia over 3G satellite networks

Wireless networks are experiencing a paradigm shift from focusing on the traditional data transfer to accommodating the rapidly increasing multimedia traffic. Hence, their scheduling algorithms have to concern not only network-oriented quality-of-service (QoS) profiles, but also application-oriented QoS targets. This is particularly challenging for satellite multimedia networks that lack fast closed-loop power control and reliable feedbacks. In this paper, we present a cross-layer packet scheduling scheme, namely Hybrid Queuing and Reception Adaptation (HQRA), which performs joint adaptations by considering the traffic information and QoS targets from the applications, the queuing dynamics induced from the network, as well as the end-to-end performance and channel variations from respective users. By jointly optimizing multiple performance criteria at different layers, the scheme enjoys quality-driven, channel-dependant, and network-aware features. HQRA can well accommodate return l...

• Type: Journal
• Year: 2010
• Where: WINET
• Authors: Hongfei Du, Xiaozheng Huang, Jie Liang, Jiangchuan Liu, Barry G. Evans, Imrich Chlamtac
• Keywords: Packet Scheduling Scheme, Performance, QoS Targets, WINET 2010