通信学报 ›› 2015, Vol. 36 ›› Issue (1): 9-17.doi: 10.11959/j.issn.1000-436x.2015002

• 学术论文 • 上一篇    下一篇

蜂窝小区边缘同频嵌入垂直覆盖的网络性能

朱近康,邓娜,赵明   

  1. 中国科学技术大学 电子工程与信息科学系,安徽 合肥 230027
  • 出版日期:2015-01-25 发布日期:2017-06-21
  • 基金资助:
    :国家自然科学基金资助项目;国家高技术研究发展计划(“863”计划)基金资助项目;国家高技术研究发展计划(“863”计划)基金资助项目

Performance of cellular network embedded in the cell edge with vertical coverage by co-frequency

HUJin-kang Z,ENGNa D,HAOMing Z   

  1. Department of Electronic Engineering & Information Science,University of Science & Technology of China,Hefei 230027,China
  • Online:2015-01-25 Published:2017-06-21
  • Supported by:
    The National Natural Science Foundation of China;The National High Technology Research &;Development Program of China (863 Program);The National High Technology Research &;Development Program of China (863 Program)

摘要:

提出一种在蜂窝小区边缘同频嵌入垂直覆盖的新型混合小区网络结构,具有抑制小区间干扰和提高边缘信干比等优点。该网络结构是以不改变目前蜂窝网络“水平覆盖”结构的前提下,在小区边缘干扰区域同频嵌入天线波束为垂直向下的微小基站,称作“垂直覆盖”,因此易于实际操作和实现。首先分析了蜂窝小区水平覆盖的干扰深度,垂直覆盖基站的干扰特性及各自的频谱效率。随后,针对提出的蜂窝小区边缘同频嵌入垂直覆盖的网络结构,分别研究了混合小区的水平覆盖中心区域和垂直覆盖小区边缘区域的频谱效率。结果表明,提出的新型混合小区网络结构,能有效抑制蜂窝小区间干扰,改善小区边缘性能,实现更高的频谱效率。

关键词: 水平覆盖, 垂直覆盖, 小区干扰深度, 嵌入垂直覆盖的混合小区网络, 蜂窝小区边缘频谱效率, 混合小区网络的频谱效率

Abstract:

A new hybrid cellular network structure is proposed,where the small base stations equipped with the downward vertical coverage of antenna beam are embedded in the cell edge of current cellular using the same frequency,thereby suppressing the inter-cell interference and improving the signal to interference ratio in the cell edge.Specifically,the radio coverage of these small stations is called vertical coverage,and the coverage of current cellular is called horizontal coverage.Since the proposed network structure does not modify the current cellular network infrastructure,it is easy to operate and implement.The cell interference depth and the interference characteristics in the horizontal coverage and the vertical coverage,as well as their spectral efficiencies are analyzed respectively.Then,the spectral efficiencies of the cell center and the cell edge with vertical coverage are investigated concerning on the proposed new hybrid cellular network structure.The results show that the new hybrid cellular network structure proposed can suppress inter-cell interference and improve cell-edge performance effectively,while achieving higher spectral efficiency.

Key words: horizontal coverage, vertical coverage, cell interference depth, hybrid cellular network embedded with vertical coverage, cell-edge spectral efficiency, spectral efficiency of hybrid network

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