A downlink scheduling scheme with link layer channel estimation in wireless networks

Tao Chen, Imrich Chlamtac

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

It is a common understanding that scheduling algorithms of multi-access wireless networks can exploit the channel state information (CSI) to improve the system performance. Typical channel aware scheduling algorithms usually require the instantaneous CSI estimated at the physical layer. However, such information may not be available to the schedulers of some wireless systems. Instead, the long term CSI obtained from the error control scheme of the link layer can be used for the same purpose. In this paper, we propose a metric to denote the long term CSI, and develop a novel method to extract the metric from the link layer. Based on the proposed metric, we implement two channel-aware downlink scheduling algorithms. The first algorithm jointly considers the channel quality and queue states for throughput optimization. The second algorithm takes long term throughput fairness of terminals into account. The proposed algorithms are independent of specific physical layer implementations, and can be employed in all wireless systems that enable the error control scheme in the link layer.

Original languageEnglish
Title of host publicationProceedings of the 5th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, WiOpt 2007
PublisherIEEE Institute of Electrical and Electronic Engineers
Number of pages8
ISBN (Print)978-1-4244-0960-0
DOIs
Publication statusPublished - 1 Dec 2007
MoE publication typeA4 Article in a conference publication
Event5th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, WiOpt 2007 - Limassol, Cyprus
Duration: 16 Apr 200720 Apr 2007

Conference

Conference5th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, WiOpt 2007
CountryCyprus
CityLimassol
Period16/04/0720/04/07

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Chen, T., & Chlamtac, I. (2007). A downlink scheduling scheme with link layer channel estimation in wireless networks. In Proceedings of the 5th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, WiOpt 2007 IEEE Institute of Electrical and Electronic Engineers . https://doi.org/10.1109/WIOPT.2007.4480093