TD-LTE网络中小区重叠覆盖优化方法研究

Investigation on the Cell Overlapping Coverage Optimization in TD-LTE Networks

TD-LTE由于网络架构、工作频段等原因,更容易在相邻站点之间出现重叠覆盖区域。为了改善TD-LTE网络中小区重叠覆盖对网络造成的影响,首先介绍了重叠覆盖的判断思路,接着给出了一种小区重叠覆盖优化方法,该方法是通过联合优化小区重叠覆盖区域信号干扰水平和信号接收强度来减少重叠覆盖。通过测试分析得知,该方法可以有效提高吞吐量和降低小区重叠覆盖程度,具有一定的可行性和推广性。

In view of the network architecture and the frequency, the overlapping coverage area is apt to appear between adjacent cells in TD-LTE networks. In order to mitigate the impact of the overlapping coverage area on TD- LTE networks, the judgment method of the overlapping coverage was introduced. An optimization method of the overlapping coverage was presented, which can reduce the overlapping coverage by jointly optimizing the interference plus noise ratio （SINR） and the reference signal receiving power （RSRP） in the overlapping coverage area. Tests demonstrate that the method can effectively improve the throughput, reduce the overlapping coverage and have the moderate validity and feasibility.