摘要
TD-LTE同频组网会使小区边缘重叠覆盖区域内产生同频干扰,严重影响小区边缘吞吐量。本论文创新提出一种干扰抑制技术,该技术基于GIS信息,通过泰森多边形原理构建蜂窝小区覆盖区域,精确计算小区覆盖面积,由小区覆盖面积求出小区覆盖等效半径,根据天线高度与覆盖半径之间的三角函数关系,确定基站天线的下倾角,在保证满足切换要求的连续性覆盖前提下,尽可能减小小区间的重叠覆盖,有效提升小区边缘吞吐量。
Co-channel interference caused by overlapping coverage in cell-edge of TD-LTE under cofrequency networking will reduce throughput. In this paper, a technology of co-channel interference suppression is introduced, the technology based on GIS information and accurately calculates the coverage region of cells by thiessen polygon, then calculating radius and downtilt angel of antenna according to the coverage area and trigonometric functions. The technology can effectively raise throughput and reduce overlapping coverage in cell-edge under the premise of continuous coverage.
出处
《电信工程技术与标准化》
2012年第7期57-60,共4页
Telecom Engineering Technics and Standardization
