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随着我国4G移动产业的蓬勃发展,全国用户已经接近两亿。但是,由于频谱规划与使用现状,导致F频段TD-LTE面临复杂的电磁干扰,主要包括多运营商间由于LTE配置参数不同导致的系统内干扰,与WLAN/GSM/TD等多系统共用运营之间导致的系统间干扰以及外部干扰。随着铁塔公司成立,多运营商将更多地共址运营TD-LTE网络,TD-LTE网络将面临更加复杂的干扰问题。而这些干扰问题将严重影响LTE网络的性能、影响客户的使用感知。本文在总结河南江移动相关经验的基础上,结合现网实际情况,总结了TD-LTE网络干扰的主要因素与原因,针对最为复杂的系统间干扰进一步分析产生原因,并给出排查方法,对TD-LTE网络降低干扰、提升质量方面有显著的指导和借鉴意义。
With the vigorous development of China’s 4G mobile industry, users in China have approached 200 million. However, due to the current situation of spectrum planning and use, TD-LTE in F-band faces complicated electromagnetic interference mainly including inter-system interference caused by different LTE configuration parameters among multiple operators and common operation with multiple systems such as WLAN / GSM / TD Inter-system interference and external interference. With the establishment of the tower company, more operators will co-locate more TD-LTE networks and TD-LTE networks will face more complicated interference problems. And these interference problems will seriously affect the performance of LTE networks, affecting the perception of customers. On the basis of summarizing the experience of Henan Jiang Mobile and combining with the actual situation of the existing network, this paper summarizes the main factors and causes of TD-LTE network interference and analyzes the causes of the most complicated inter-system interference and gives the troubleshooting methods. TD-LTE network to reduce interference and improve quality have significant guidance and reference.