Abstract—In 5G mobile communication, technologies are being studied today to provide higher data rates. Among them, UDN(Ultra Dense Network) can be considered as a key technology of 5G because it can improve system capacity and spectral efficiency by making the number of BS(Base Stations) more than or equal to the number of UE(User Equipment). However, in the case of UDN, since the number of BSs is large, the UE at the edge of the cell receives signals from more than one BS, causing interference. Therefore, in this paper, we can improve the total data rate of the system by converting the interference signal of the cell edge UE into a useful signal through inter-cell coordination using Joint CoMP (Coordinated Multi Point) technique. After that, we propose a GCD (Graph Coloring based on Distance) algorithm that adds the concept of distance between UEs when sub-carriers are distributed. Simulation results show that the proposed scheme increases the data rate of each cell edge UE, resulting in a higher total data rate than the result of using the CLA-CoMP(Cell Load Aware-CoMP) technique without considering subcarrier allocation.

 

Index Terms—UDN, 5G, CoMP, Graph Coloring, CLA-CoMP, subcarrier allocation

Cite: Ho Kyung Yu, Sung Hyun Oh, and Jeong Gon Kim, "LBS Based Resource Allocation in Ultra-Dense Network with Joint COMP Scenarios," Journal of Communications vol. 15, no. 5, pp. 433-438, May 2020. Doi: 10.12720/jcm.15.5.433-438

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