Time domain coordination for inter-cell interference reduction in LTE hierarchical cellular systems

Ssu Han Lu, Wen Pin Lai, Li-Chun Wang

研究成果: Conference contribution同行評審

10 引文 斯高帕斯(Scopus)

摘要

In this paper, we present an interference-aware slot allocation technique to improve system performance of the hierarchical picocell/macrocell system, where low-power picocells are underlying a high-power macrocell. Although a hierarchical picocell/macrocell system can improve capacity, it also poses a challenging inter-cell interference (ICI) issue. To control the ICI between pico-cells and macro-cells, one enhanced inter-cell interference coordination (eICIC) technique, called almost blank subframes (ABS), was proposed in the 3rd Generation Partnership Project (3GPP) Long-Term Evolution-Advanced (LTE-A) system. Nevertheless, the current ABS mechanism in 3GPP only defines the fixed ABS ratio, which is not very spectrum efficient and can affect the macrocellular system performance. In this paper, we propose an interference-aware ABS ratio adaptation technique to enhance the total spectrum efficiency of the hierarchical picocell/macrocell system. Compared with the current fixed ABS ratio approach, the proposed method can improve the spectral efficiency of pico-cells and macro-cells by 13% and 7% at the cell edge, respectively.

原文English
主出版物標題Proceedings of the 2014 10th International Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness, QSHINE 2014
發行者Institute of Electrical and Electronics Engineers Inc.
頁面51-55
頁數5
ISBN(電子)9781631900259
DOIs
出版狀態Published - 17 十月 2014
事件10th International Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness, QSHINE 2014 - Rhodes, Greece
持續時間: 18 八月 201420 八月 2014

出版系列

名字Proceedings of the 2014 10th International Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness, QSHINE 2014

Conference

Conference10th International Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness, QSHINE 2014
國家/地區Greece
城市Rhodes
期間18/08/1420/08/14

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