LTE系统小区间干扰协调技术研究
首发时间:2009-10-12
摘要:在LTE系统中,小区间的干扰成为系统主要的干扰源,如何提高频谱利用率并且抑制小区间干扰成为了LTE系统的研究热点。本文介绍了主流的几种干扰协调方案,研究了其实现原理,分析了它们的优缺点以及存在的问题。之后介绍了干扰协调技术中涉及的一个关键问题——小区边缘用户和小区中心用户的划分方式。对干扰协调技术的未来研究方向进行了一些讨论。
关键词: LTE 小区间干扰 干扰协调 软频率复用 RSRP
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Inter-cell Interference Coordination in LTE System
Abstract:In the LTE system, inter-cell interference becomes main interference source of LTE system. How to improve the spectral efficiency and suppress inter-cell interference has become a hot topic in LTE system research. This article introduces several classic Inter-cell Interference Coordination schemes, and analysis of their strengths and weaknesses, as well as existing problems. And then introduce how to indentify cell-edge user and cell-center cell which is a key issue in interference coordination technology. Future research directions of inter-cell interference coordination are also made some discussion.
Keywords: LTE Inter-Cell Interference Frequency reuse Interference Mitigation RSRP
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