A packet scheduling algorithm for IEEE 802.22 WRAN systems and calculation reduction method thereof

  • Authors:

  • Young-Du Lee;Tae-Joon Yun;Insoo Koo

  • Affiliations:

  • School of Electrical Engineering, University of Ulsan, Ulsan, Republic of Korea;School of Electrical Engineering, University of Ulsan, Ulsan, Republic of Korea;School of Electrical Engineering, University of Ulsan, Ulsan, Republic of Korea

  • Venue:
  • ICIC'09 Proceedings of the Intelligent computing 5th international conference on Emerging intelligent computing technology and applications
  • Year:
  • 2009

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Abstract

In the paper, a scheduling algorithm based on the estimation of packet loss amount is proposed for supporting real-time traffic in IEEE 802.22 WRAN systems. The proposed scheduling algorithm takes two steps for resource allocation. In the first step, it assigns resource to users having packets that are estimated to be dropped at next frame. In the second step, it assigns the remaining resource to the other users according to one of the existing scheduling algorithms. The simulation results show that the proposed scheduling algorithm provides much better performance than the PLFS and M-LWDF algorithm. In addition, a simple calculation method is proposed for the proposed scheme. With the simple method, we can reduce the number of checking packets in the queue as much as about a half time without any performance degradation in the case of video traffic.