In this paper

using Vo LTE DPI data resources

through the study of service characteristics and data correlation

according to the service we construct a routing set based on network topology. By taking the base station as the tree root

we establish a poor quality tree from the base station to the EPC core network

and then to the IMS core network. For the single interface S1-U data we accurately realize the segmented delimitation of end-to-end voice quality problems of Vo LTE by calculating the voice quality of Vo LTE for all routing sets and using the sample space replacement algorithm for comparison. In this paper

the segmented delimitation method based on the single interface data of S1-U is implemented

which can greatly reduce the acquisition cost and storage resource consumption

and can effectively realize the function of segmented delimitation and positioning for the end-to-end voice quality problems of Vo LTE.