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Tier-Based Directed Weighted Graph Coloring Algorithm for Device-to-Device Underlay Cellular Networks

  • Yating ZhangEmail author
  • Tao Peng
Conference paper
  • 127 Downloads
Part of the Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering book series (LNICST, volume 313)

Abstract

Device-to-Device (D2D) communication has been recognized as a promising technology in 5G. Due to its short-range direct communication, D2D improves network capacity and spectral efficiency. However, interference management is more complex for D2D underlaying cellular networks compared with traditional cellular networks. In this paper, we study channel allocation in D2D underlaying cellular networks. A tier-based directed weighted graph coloring algorithm (TDWGCA) is proposed to solve cumulative interference problem. The proposed algorithm is composed of two stages. For the first stage, the tier-based directed weighted graph is constructed to formulate the interference relationship among users. For the second stage, the maximum potential interference based coloring algorithm (MPICA) is proposed to color the graph. Different from the hypergraph previously investigated in channel allocation, our proposed graph reduces the complexity of graph construction significantly. Simulation results show that the proposed algorithm could better eliminate cumulative interference compared with the hypergraph based algorithm and thus the system capacity is improved.

Keywords

Device-to-Device communication Channel allocation Graph coloring 

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Copyright information

© ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering 2020

Authors and Affiliations

  1. 1.Wireless Signal Processing and Networks Laboratory (WSPN), Key Laboratory of Universal Wireless Communications, Ministry of EducationBeijing University of Posts and TelecommunicationsBeijingChina

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