Method for positioning mobile terminal and base station

Abstract

The invention relates to the technical field of mobile communication, in particular to the technology of positioning a mobile terminal, which is used for realize the selection of the adaptive positioning technology according to the signal performance of the mobile terminal. A method for positioning the mobile terminal comprises the following steps: when receiving a positioning service request of amobile terminal, acquiring signal performance parameter information of the mobile terminal; according to the signal performance parameter information of the mobile terminal and a signal performance level judgment threshold, determining the signal performance level of the mobile terminal; and according to the positioning technology matched with the signal performance level of the mobile terminal,positioning the mobile terminal.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a positioning technology of a mobile terminal. Background technique [0002] In recent years, with the increase of user demands, mobile positioning technology has received more and more attention, which has promoted the research on mobile positioning technology and the development of ranging technology. How to utilize the existing network resources as much as possible to achieve precise positioning of UE (User Equipment, mobile terminal) at low cost has always been the focus of research. In the prior art, the available positioning technologies mainly include: CELL ID (cell identification) positioning technology, CELL ID+RTT (Round Trip Time, round-trip time) positioning technology, AOA (AngleOf Arrive, signal angle of arrival) positioning technology, TSOA (Time-Sum of Arrival, time of arrival) positioning technology, TDOA (Time Difference of Arrival, time difference...

AI Technical Summary

Problems solved by technology

Although the principle of this positioning method is very simple, there are some insurmountable shortcomings in practical applications: First, the AOA positioning technology requires that the radio frequency signals between the measured UE and all base stations participating in the measurement are line-of-sight (LOS) , non-line-of-sight transmission (NLOS, Non Light of Sight) will bring unpredictable errors to AOA positioning, even in the case of LOS transmission, the multipath effect of radio frequency signals will still interfere with the measurement of AOA positioning technology ; Secondly, due to the limitation of the angular resolution of the antenna base station, the measurement accuracy of the AOA positioning technology decreases with the increase of the distance between the base station and the UE

Therefore, using this positioning technology, services that require high positioning accuracy can be provided; the disadvantage is that the positioning accuracy is greatly affected by the environment where the UE is located. For example, when the user is indoors or between tall buildings, the positioning accuracy will be reduced. Can't even finish positioning

[0009] In the above solutions, the existing positioning technologies have some shortcomings. For example, the positioning accuracy of CELL ID and CELL ID+RTT technology will vary with the size of the cell; TOA technology, TSOA technology and TDOA technology require at least three or More than three base stations are used for positioning, and the positioning accuracy is affected by whether these base stations can receive signals from mobile terminals well; although GPS positioning is accurate, it consumes a lot of power and is expensive, and it is difficult to locate in houses and places with shelter. Accuracy deteriorates sharply

Images