电信科学 ›› 2022, Vol. 38 ›› Issue (2): 119-129.doi: 10.11959/j.issn.1000-0801.2022010

• 研究与开发 • 上一篇    下一篇

基于MDT重叠覆盖度数据的KNN-DBSCAN参数自适应调优研究

刘璐1, 陈睿杰2, 李嘉2   

  1. 1 中国移动通信集团设计院有限公司重庆分公司,重庆 401121
    2 中国移动通信集团云南有限公司,云南 昆明 650228
  • 修回日期:2022-01-09 出版日期:2022-02-20 发布日期:2022-02-01
  • 作者简介:刘璐(1986- ),男,中国移动通信集团设计院有限公司重庆分公司工程师、高级咨询设计师,主要研究方向为无线网络智能优化
    陈睿杰(1987- ),男,中国移动通信集团云南有限公司工程师,主要研究方向为大数据分析、AI、智慧运维
    李嘉(1989- ),男,现就职于中国移动通信集团云南有限公司,主要研究方向为大数据分析、AI、智慧运维等

Research on adaptive optimization of KNN-DBSCAN parameters based on MDT overlapping coverage data

Lu LIU1, Ruijie CHEN2, Jia LI2   

  1. 1 Chongqing Branch of China Mobile Communications Group Design Institute Co., Ltd., Chongqing 401121, China
    2 Yunnan Branch of China Mobile Communications Group Co., Ltd., Kunming 650228, China
  • Revised:2022-01-09 Online:2022-02-20 Published:2022-02-01

摘要:

传统网络优化中路测工作存在难以全量测试道路及楼宇、测试工作量大、工作效率低、周期长、受人为因素影响等显性缺点,无法动态关注每个区域网络质量情况,且常规测量报告(measurement report,MR)数据不具备定位信息,无法精确定位如重叠覆盖度问题发生位置。基于最小化路测(minimization drive test, MDT)精准定位系统通过采集底层基站 MDT 数据,并根据重叠覆盖度算法输出高重叠覆盖度栅格,再通过自适应K最近邻-具有噪声的基于密度的聚类方法(K-nearest neighbor density-based spatial clustering of applica-tions with noise,KNN-DBSCAN)联合算法解决了DBSCAN算法对参数设置敏感性问题,并对问题栅格进行非监督聚类,收敛问题连片区域,通过小区采样贡献度进行栅格区域映射,最终达到精准调整全局最高优先级(TOP)小区,降低小区高重叠覆盖度的目的。

关键词: KNN-DBSCAN算法, MDT数据, 重叠覆盖度, 小区贡献度

Abstract:

In the traditional network optimization, the drive test (DT) work has obvious disadvantages, such as difficult to fully test roads and buildings, large test workload, low work efficiency, long cycle, affected by human factors, unable to dynamically pay attention to the network quality of each area, and the conventional measurement report (MR) data does not have positioning information, so it is impossible to accurately locate the location where the overlapping coverage problem occured.Based on minimization drive test (MDT), the precision positioning system collected the MDT data of the underlying base station and outputted the grid with high overlapping coverage according to the overlapping coverage algorithm.Then, the sensitivity of DBSCAN algorithm to parameter setting was solved through the adaptive K-nearest neighbor density-based spatial clustering of applications with noise (KNN-DBSCAN)joint algorithm.The problem grid was unsupervised clustered, the problem contiguous area was converged, and the grid area was mapped through the cell sampling contribution.Finally, the global top cell was accurately adjusted to optimize the high overlap coverage.

Key words: KNN-DBSCAN algorithm, MDT data, overlapping coverage, cell contribution

中图分类号: 

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