Interference Avoidance Using Dynamic Frequency Reuse For LTE-A System

  • Abstract
  • Keywords
  • References
  • PDF
  • Abstract

    To meet the increasing demand for spectrum in communication system, Long Term Evolution (LTE) system has been proposed. It allowed users to use a new and much wider spectrum comparing to the other previous technologies. To utilize the full capacity of the LTE system Frequency Reuse (FR) has been adapted. It is a promising aspect of transmission of high rate data stream with better system capacity and fading immunity in the modern Long-Term Evolution-Advanced (LTE-A) system. Fractional Frequency Reuse (FFR) is the commonly used frequency reuse technique to increase the system capacity. But the problem is, with introduction of FR, it also increases the Inter Cell Interference (ICI) of the system. The out of cell interference coming from the neighbouring e-NodeBs (eNB) as a result of using the same frequency band and they act as an interference source. This ICI decreases the system capacity, resulting in hampering of communication, browsing and in worst case no connection at all. This condition highly affects the users under a cell specially those who are located in the cell edge areas. To take care of this issue an approach called Dynamic Frequency Reuse scheme has been proposed in this paper to mitigate the interference thus increasing the system capacity. This scheme uses continuous assessment of resource allocation and choosing the best sub-band for the user with least interference. There is a sequential order to be maintained for the users with using off minimum Base Station (BS) transmit power. The cell edge area users are the primary concern in terms of increasing their service quality. MATLAB simulation software has been used to justify the theory that the proposed scheme is capable increase the capacity of the cell edge areas as well as the cell centre area user. The results achieved from the simulation also indicates that the proposed model can enhance the system capacity comparing to the existing FFR scheme.   



  • Keywords

    FR, LTE-A, FFR, DFR, ICI, capacity

  • References

      [1] Wang, Cheng-Xiang, Haider, Fourat, Gao, Xiqi, You, Xiao-Hu, Yang, Yang, Yuan, Dongfeng, Aggoune, Hadi M., Haas, Harald, Fletcher, Simon, Hepsaydir, Erol. "Cellular architecture and key technologies for 5G wireless communication networks." IEEE Communications Magazine 52.2 (2014): 122-130.

      [2] Qian Clara Li, Huaning Niu, Apostolos Tolis Papathanassiou, Geng Wu. "5G network capacity: key elements and technologies." IEEE Vehicular Technology Magazine 9.1 (2014): 71-78. Sun, Chen, Jian Shu, Wei Zheng, Zhiyong Yang, and Xiaojun Wang. "Adaptive partial frequency reuse in LTE-Advanced relay networks." In 2015 IEEE 34th International Performance Computing and Communications Conference (IPCCC), pp. 1-8. IEEE, 2015.

      [3] Chen Sun, Jian Shu, Wei Zheng, Zhiyong Yang and Xiaojun Wang, "Adaptive partial frequency reuse in LTE-Advanced relay networks," 2015 IEEE 34th International Performance Computing and Communications Conference (IPCCC), Nanjing, 2015, pp. 1-8.

      [4] Zhan, Hao-Yue, Bin-Jie Hu, Zong-Heng Wei, Wen-Ji Liu, Bing Li, and Xing Liu. "Contention-based fractional frequency reuse scheme in LTE/LTE-A network." In Information Technology, Networking, Electronic and Automation Control Conference, IEEE, pp. 663-666. IEEE, 2016.

      [5] Ali, Nora A., Mohamed A. El-Dakroury, Magdi El-Soudani, Hany M. ElSayed, Ramez M. Daoud, and Hassanein H. Amer. "New hybrid frequency reuse method for packet loss minimization in LTE network." Journal of advanced research 6, no. 6 2015: 949-955.

      [6] Yu, Yiwei, Eryk Dutkiewicz, Xiaojing Huang, Markus Mueck, and Gengfa Fang. "Performance analysis of soft frequency reuse for inter-cell interference coordination in LTE networks." In Communications and Information Technologies (ISCIT), 2010 International Symposium on, pp. 504-509. IEEE, 2010.

      [7] Qian, Manli, Wibowo Hardjawana, Yonghui Li, Branka Vucetic, Xuezhi Yang, and Jinglin Shi. "Adaptive soft frequency reuse scheme for wireless cellular networks." IEEE Transactions on Vehicular Technology 64, no. 1 2015: 118-131.

      [8] Huang, Jinjing, Jiandong Li, Linjing Zhao, and Sheng Huang. "CoSFR: coordinated soft frequency reuse for OFDMA-based multi-cell networks with non-uniform user distribution." Wireless Networks: 1-14 2016.

      [9] Rahman, Md Tashikur, Md Didarul Alam, and Mostafa Zaman Chowdhury. "Interference mitigation and capacity enhancement based on dynamic frequency reuse for femtocell networks." In 2015 IEEE International Conference on Telecommunications and Photonics (ICTP), pp. 1-5. IEEE, 2015.

      [10] Chung, Sungmoon. "Dynamic Frequency Reuse Scheme Based on Traffic Load Ratio for Heterogeneous Cellular Networks." The Journal of Korean Institute of Communications and Information Sciences 40, no. 12 2015: 2539-2548.

      [11] Ye, Qiaoyang, Beiyu Rong, Yudong Chen, Mazin Al-Shalash, Constantine Caramanis, and Jeffrey G. Andrews. "User association for load balancing in heterogeneous cellular networks." IEEE Transactions on Wireless Communications 12, no. 6 2013.: 2706-2716.




Article ID: 16193
DOI: 10.14419/ijet.v7i3.7.16193

Copyright © 2012-2015 Science Publishing Corporation Inc. All rights reserved.