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2nd International ICST Conference on Communications and Networking in China

Research Article

Adaptive Cross-layer Scheduling and Dynamic Subcarrier Allocation Algorithm Based on Service-differentiation in Multiuser OFDMA System

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BibTeX Plain Text
  • @INPROCEEDINGS{10.1109/CHINACOM.2007.4469567,
        author={Xuebing Pei and Gan Liu and Guangxi Zhu and Li Li},
        title={Adaptive Cross-layer Scheduling and Dynamic Subcarrier Allocation Algorithm Based on Service-differentiation in Multiuser OFDMA System},
        proceedings={2nd International ICST Conference on Communications and Networking in China},
        publisher={IEEE},
        proceedings_a={CHINACOM},
        year={2008},
        month={3},
        keywords={CSI  OFDMA  cross-layer Scheduling  fairness  service-differentiation},
        doi={10.1109/CHINACOM.2007.4469567}
    }
    
  • Xuebing Pei
    Gan Liu
    Guangxi Zhu
    Li Li
    Year: 2008
    Adaptive Cross-layer Scheduling and Dynamic Subcarrier Allocation Algorithm Based on Service-differentiation in Multiuser OFDMA System
    CHINACOM
    IEEE
    DOI: 10.1109/CHINACOM.2007.4469567
Xuebing Pei1,*, Gan Liu1,*, Guangxi Zhu1, Li Li1
  • 1: Department of Electronic & Information Engineering Huazhong University of Science and Technology Wuhan Optical-Electronic National Laboratory Wuhan, 430074, P. R. China
*Contact email: pxbykk@163.com, gliu_hust@yahoo.com.cn

Abstract

In this paper scheduling algorithm utilizing channel status information(CSI) and dynamic allocation algorithm of subcarrier and power is investigated in orthogonal frequency division multiplexing access(OFDMA) system. To this end, based on service differentiation we develop an adaptive cross-layer scheduling scheme combined with dynamic subcarrier allocation algorithm according to instantaneous traffic load condition over wireless Rayleigh fading channel. The algorithm is designed to grant higher priority to realtime traffic packet of voice and multimedia than data packet, and dynamically allocate subcarriers for data service according to the packet number of each user in the buffer queue with fairness guarantee. The simulation result shows that the proposed adaptive cross-layer scheduling and dynamic subcarrier allocation algorithm has shorter delay for realtime traffic and higher spectral efficiency than nonadaptive scheduling algorithm in Rayleigh fading channel.

Keywords
CSI OFDMA cross-layer Scheduling fairness service-differentiation
Published
2008-03-07
Publisher
IEEE
Modified
2011-07-14
http://dx.doi.org/10.1109/CHINACOM.2007.4469567
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