Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2014, Vol. 37 ›› Issue (3): 73-77.doi: 10.13190/j.jbupt.2014.03.015

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Collaborative Scheduling Scheme Based on Random Competition for the Edge of LTE-A Relay-Enhanced Cell

QU Hua1, XU Xi-guang1, ZHAO Ji-hong1,2, LI Yi-wei1   

  1. 1. The School of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an 710049, China;
    2. The School of Telecommunication and Information Engineering, Xi'an University of Posts and Telecommunications, Xi'an 71006l, China
  • Received:2013-08-04 Online:2014-06-28 Published:2014-06-08

Abstract:

Random competition (RC) scheduling algorithm is proposed. This algorithm is applied to joint scheduling between cells edge users of different adjacent areas, which belongs to the category of collaborative scheduling algorithm. In addition, collaborative scheduling scheme based on random competition for the edge of relay-enhanced cell is proposed based on this algorithm. In order to avoid co-frequency interference and improve the transmission performance of the cell edge areas, we introduce the collaborative relay cluster in the edge of relay-enhanced cell where resource conflicts would appear and apply RC scheduling algorithm among collaborative relay cluster. Simulation results suggest that the proposed method can reduce the users' interference of the adjacent cells, and improve the cell edge throughput. Moreover, the scheduling fairness between cell center and edge can be enhanced.

Key words: relay-enhanced cell, random competition, collaborative scheduling, cell edge throughput

CLC Number: