Research Article
DBS: Delay Based Hierarchical Downlink Scheduling for Real-Time Stream in Cellular Networks
@INPROCEEDINGS{10.1007/978-3-030-41114-5_19, author={Wenjin Fan and Yu Liu and Yumei Wang}, title={DBS: Delay Based Hierarchical Downlink Scheduling for Real-Time Stream in Cellular Networks}, proceedings={Communications and Networking. 14th EAI International Conference, ChinaCom 2019, Shanghai, China, November 29 -- December 1, 2019, Proceedings, Part I}, proceedings_a={CHINACOM}, year={2020}, month={2}, keywords={Downlink schedule Resource allocation Stream classify Cellular network}, doi={10.1007/978-3-030-41114-5_19} }- Wenjin Fan
Yu Liu
Yumei Wang
Year: 2020
DBS: Delay Based Hierarchical Downlink Scheduling for Real-Time Stream in Cellular Networks
CHINACOM
Springer
DOI: 10.1007/978-3-030-41114-5_19
Abstract
With the rapid development of cellular networks, demand for real-time stream is increasing dramatically. How to guarantee better quality-of-service (QoS) of real-time stream services under limited resources becomes an increasingly important issue. This paper proposes a delay based hierarchical downlink scheduling (DBS) algorithm for real-time stream in cellular networks. The hierarchical scheduler is divided into two levels. The upper level scheduler offers a prediction of the number of data bits that each real-time stream needs to guarantee the QoS. The lower level scheduler classifies all real-time streams into grade A, B and C according to Head of Line Delay and allocates resources to streams according to their different grades. The simulation results show that our algorithm performs better than other real-time schedulers, such as frame level scheduler (FLS), Modified Largest Weight Delay First (M-LWDF), EXP/PF and EXP-LOG in the aspects of delay and throughput.
