基于LTE方向型传播模型的模拟退火加权定位算法

针对LTE网络采集到的MRO数据,提出一种基于LTE方向型传播模型的模拟退火加权定位算法。先结合LTE定向天线和小区特性,引入方向型参量提出基于RSS的方向型传播模型,对传统的信号传播模型COST-231 Hata进行改进；然后提出距离比加权算法消除RSS波动误差,将定位问题转换为一元求解问题,使用模拟退火算法计算最优解；最后通过距离椭圆模型对结果进行方位校正,得到最终终端定位结果。算法对比实验结果表明,基于LTE方向型传播模型的模拟退火加权定位算法具有较高的定位精度,完全符合FCC规定的定位精度要求。

Simulated Annealing for Weighted Localization Algorithm Based on LTE Directional Propagation Model

According to the collected MRO(Measurement Report Original) data on LTE(Long Term Evolution),the simulated annealing for weighted localization algorithm based on the LTE directional propagation model was proposed.Firstly,combined with the LTE directional antenna and cell site characteristics,the directional propagation model based on RSS with introducing the direction type parameter was put forward,which improves the traditional signal propagation model COST-231 Hata.Then,the distance ratio weighted algorithm was proposed to eliminate the RSS(Received Signal Strength) fluctuation error,which transforms the positioning problem to the question of solving one variable.Afterwards,the simulated annealing algorithm was used to calculate the optimal solution.Finally, the elliptical distance model was used to correct the azimuth for the final terminal positioning result.Algorithm contrast experimental results show that the simulated annealing for weighted localization algorithm based on the LTE directional propagation model has higher positioning accuracy,which accords with the positioning accuracy of the FCC rules completely.