Inter-cell interference coordination through adaptive soft frequency reuse in LTE networks

Manli Qian*, Wibowo Hardjawana, Yonghui Li, Branka Vucetic, Jinglin Shi, Xuezhi Yang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

69 Citations (Scopus)

Abstract

In 3GPP Long Term Evolution (LTE) networks, the frequency reuse schemes such as fractional frequency reuse (FFR) and soft frequency reuse (SFR) are used to improve system capacity. The allocation of transmit power and subcarriers to each cell in these schemes are fixed prior to network deployment. This limits the potential performance of these frequency reuse schemes. In this paper, we propose to improve the capacity of SFR scheme by jointly optimizing subcarrier and power allocation in multi-cell LTE networks. An iterative algorithm that can adaptively vary the number of major subcarriers and adjust the transmit power for each cell according to wireless traffic loads is proposed. Simulation results show that the proposed algorithm outperforms the existing Reuse 1, FFR and static SFR schemes in both system throughput and cell edge user performance.

Original languageEnglish
Title of host publication2012 IEEE Wireless Communications and Networking Conference, WCNC 2012
Pages1618-1623
Number of pages6
DOIs
Publication statusPublished - 2012
Event2012 IEEE Wireless Communications and Networking Conference, WCNC 2012 - Paris, France
Duration: 1 Apr 20124 Apr 2012

Other

Other2012 IEEE Wireless Communications and Networking Conference, WCNC 2012
CountryFrance
CityParis
Period1/04/124/04/12

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Qian, M., Hardjawana, W., Li, Y., Vucetic, B., Shi, J., & Yang, X. (2012). Inter-cell interference coordination through adaptive soft frequency reuse in LTE networks. In 2012 IEEE Wireless Communications and Networking Conference, WCNC 2012 (pp. 1618-1623). [6214041] https://doi.org/10.1109/WCNC.2012.6214041