Semi-supervised Machine Learning Aided Anomaly Detection Method in Cellular Networks
preprintposted on 2020-01-22, 22:04 authored by Yutao Lu, Juan Wang, Miao Liu, Kaixuan Zhang, G G, Tomoaki Ohtsuki, Fumiyuki Adachi
The ever-increasing amount of data in cellular networks poses challenges for network operators to monitor the quality of experience (QoE). Traditional key quality indicators (KQIs)-based hard decision methods are difficult to undertake the task of QoE anomaly detection in the case of big data. To solve this problem, in this paper, we propose a KQIs-based QoE anomaly detection framework using semi-supervised machine learning algorithm, i.e., iterative positive sample aided one-class support vector machine (IPS-OCSVM). There are four steps for realizing the proposed method while the key step is combining machine learning with the network operator's expert knowledge using OCSVM. Our proposed IPS-OCSVM framework realizes QoE anomaly detection through soft decision and can easily fine-tune the anomaly detection ability on demand. Moreover, we prove that the fluctuation of KQIs thresholds based on expert knowledge has a limited impact on the result of anomaly detection. Finally, experiment results are given to confirm the proposed IPS-OCSVM framework for QoE anomaly detection in cellular networks.
Email Address of Submitting Authorguiguan@njupt.edu.cn
Submitting Author's InstitutionNanjing University of Posts and Telecommunications
Submitting Author's CountryChina
Read the peer-reviewed publication
in IEEE Transactions on Vehicular Technology