LTE測量事件主要有下面幾種：Event A1、Event A2、Event A3、Event A4、Event A5、Event B1、Event B2。Event A1 (Serving becomes better than threshold)：表示服務小區訊號質量高於一定門限，滿足此條件的事件被上報時，eNodeB停止異頻/異系統測量；類似於UMTS裡面的2F事件；Event A2 (Serving becomes worse than threshold)：表示服務小區訊號質量低於一定門限，滿足此條件的事件被上報時，eNodeB啟動異頻/異系統測量；類似於UMTS裡面的2D事件；Event A3 (Neighbour becomes offset better than serving)：表示同頻鄰區質量高於服務小區質量，滿足此條件的事件被上報時，源eNodeB啟動同頻切換請求；Event A4 (Neighbour becomes better than threshold)：表示異頻鄰區質量高於一定門限量，滿足此條件的事件被上報時，源eNodeB啟動異頻切換請求；Event A5 (Serving becomes worse than threshold1 and neighbour becomes better than threshold2)：表示服務小區質量低於一定門限並且鄰區質量高於一定門限；類似於UMTS裡的2B事件；Event B1 (Inter RAT neighbour becomes better than threshold)：表示異系統鄰區質量高於一定門限，滿足此條件事件被上報時，源eNodeB啟動異系統切換請求；類似於UMTS裡的3C事件；Event B2 (Serving becomes worse than threshold1 and inter RAT neighbour becomes better than threshold2)：表示服務小區質量低於一定門限並且異系統鄰區質量高於一定門限，類似於UMTS裡進行異系統切換的3A事件。