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对TD-LTE(分时长期演进)存在的干扰情况作了细致分析。3GPP(第三代合作伙伴计划)对解决小区间的干扰提出了几种干扰控制技术,主要有小区间干扰随机化、小区间干扰消除和小区间干扰协调技术。小区间干扰协调技术主要有部分频率复用(FFR)技术和软频率复用(SFR)技术。简要介绍了现今比较常用的动态TDD(时分双工)的干扰控制,主要有小区成簇干扰减轻法,协作调度干扰减轻法,基于elC IC/FelC IC(增强的小区间干扰协调)的干扰减轻法和干扰抑制消减法。
The detailed analysis on the interference existed in TD-LTE (Time-sharing long-term evolution) was carried out. 3GPP (3rd Generation Partnership Project) proposes several interference control techniques for solving the inter-cell interference, including inter-cell interference randomization, inter-cell interference cancellation and inter-cell interference coordination. Inter-cell interference coordination techniques mainly include partial frequency reuse (FFR) and soft frequency reuse (SFR) technologies. This paper introduces the commonly used dynamic TDD (Time Division Duplex) interference control in this paper. It mainly includes the method of mitigation of cell cluster interference, the method of cooperative scheduling mitigation, the interference mitigation based on elC IC / FelC IC (Enhanced Intercell Interference Coordination) Law and interference suppression subtraction method.