摘要
异构网络被LTE-A系统视为一种提升单位区域频谱效率的关键技术而得到广泛关注。然而,异构网络会带来严重的小区间干扰,小区间干扰协调因此成为3GPP标准化进程研究的重点。首先总结了异构网络及小区间干扰协调技术,然后介绍了目前3GPP中讨论的小区覆盖扩展(CRE:Cell Range Extension)和基于几乎空白子帧(ABS:Almost Blank Subframe)的时域小区间干扰协调技术。最后,基于动态系统级仿真平台,评估了CRE和ABS技术方案系统性能。
Inter-cell Interference Coordination has become a key work item in the current process of standardization in the 3rd Generation Partnership Project （3GPP）. In this paper, we give a summariza- tion of heterogeneous networks and inter-cell inter- ference coordination technologies. Then we intro- duce cell range extension （CRE） and almost blank subframe （ABS） time domain inter-cell interference coordination technology, both of which are under discussion in 3GPP currently. In the end, we evalu- ate influence of CRE and ABS technical proposal on system performance on the basis of dynamic sys- tem level simulation platform.
出处
《现代电信科技》
2012年第1期33-38,共6页
Modern Science & Technology of Telecommunications
