Research And Verification Of Multiple Dimensions Interference Recognition Algorithm Based On TD-LTE Upstream Interference Data

With the diversification of information, the communication network needs of people are increasing gradually. In order to meet users' demand and reduce telecommunication the degree of difficulty and cost, 3 GPP proposed LTE technology. With the deployment of LTE network, China mobile communication network is becoming more and more complex,TD-LTE interference issues are gradually serious.In order to improve the efficiency of TD-LTE optimization work,this paper researched characteristics of the intra-system interference cells in both time domain and frequency domain, and proposed a multiple dimensions Interference recognition algorithm based on TD-LTE upstream interference data. This algorithm will assess whether cells are suffer from the inter-system interference first, if not, then will use upstream interference data to assess whether cells are suffer from interference in free time, and to assess whether cell's time domain waveform have a sudden rise, and to assess whether there is a correlation between two frequency domain waveform. The research result show that this algorithm can accurately identify the cells that are suffer from intra-system interference. This paper collected actual upstream interference data of three cities that totally have 2448 interfered cells to validate the accuracy of this algorithm. The experimental result show that the average recognition accuracy of multiple dimensions interference recognition algorithm is 97.55%, this algorithm can accurately identify the TD-LTE intra-system interference. And this algorithm has been applied to the actual work of optimize network, the purpose that improve the efficiency of TD-LTE optimization work is achieved.