Fairness Analysis of Inter-cell Relay in Downlink OFDMA Cellular Networks

  • Weifeng LuEmail author
  • Mingqi Zhu
  • Siguang Chen
  • Lijun Yang


In the OFDMA cellular network, in order to improve the throughput of the cell system and the overall resource utilization of the system as well as the quality of service and fairness of the system users. In this paper, we propose a load balancing schema based on the inter-cell relay for the downlink OFDMA cellular networks, and then we research the fairness of intra cell and whole cell system. Based on the frequency reuse pattern, we propose a new type of spectrum division and time slot division model. And then, we calculate the remaining subcarriers by deriving the interference formula according to the SIR. Then, we propose a distance-based fairness scheduling algorithm, which is used for the redistribution of the remaining sub-carriers in the BS and RS region. Besides, we consider the optimization of the relay radius when the fairness of the system is as higher as possible. Finally, the feasibility of the proposed scheme is verified by simulation.


OFDMA cellular networks Inter-cell relay Downlink Load balancing Fairness 



This work is supported by the National Natural Science Foundation of China (61201160, 61602263); The six talent peaks project in Jiangsu Province (XYDXXJS-044); The Natural science fund for colleges and universities in Jiangsu Province under Grants (16KJB510034); The Natural Science Foundation of Jiangsu Province under Grants (BK20151507, BK20160916); Sponsored by NUPTSF (Grant Nos. NY214065, NY216020).


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Authors and Affiliations

  1. 1.School of Computer ScienceNanjing University of Posts and TelecommunicationsNanjingChina
  2. 2.College of IoTNanjing University of Posts and TelecommunicationsNanjingChina
  3. 3.Jiangsu Key Laboratory of Big Data Security and Intelligent ProcessingNanjingChina

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