Method for positioning mobile terminal by single base station

Abstract

A single base station positioning method relates to a location method relates to a location method for mobile terminals in the cellular network, which uses single location base station to search, position and track to mobile terminals of cellular networks. A location base station tests the pilot signal time delay of a cellular base station serving the tracked target and searches for the entering channel of the target mobile terminal, estimates the arrived time delay to construct an elliptical equation taking the cellular base station and location base station as the focal points with the help of the above two time delay differential value to get the orientation angle of the target arriving at the base station to determine two crossing points, which can be the position of the searched target, one point is abandoned based on the action distance of the cellular service base station, the rest one is the determined target position.

Description

technical field [0001] The invention relates to a wireless positioning method, which is especially suitable for positioning a cellular network mobile terminal. Background technique [0002] At present, the positioning systems of cellular network mobile terminals are divided into two categories: mobile station-based positioning and network-based positioning. Mobile station-based positioning uses signals from cellular network base stations to estimate their own positions. Commonly used are GPS and AGPS (GPS Aided) etc., its disadvantage is that the existing mobile terminals need to be transformed; the network-based positioning uses the signal from the mobile station to calculate the position of the mobile station, but generally the network needs to be transformed, and the commonly used positioning algorithms include TOA / TDOA ( Time of Arrival / Time Difference of Arrival), AOA (Angle of Arrival), AOA / RTD (Angle of Arrival / Round Trip Delay), EOTD (Enhanced Observed Time differenc...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above defects in the existing positioning technology, this positioning system adopts a new positioning method. This positioning system only needs to set up one positioning base station LMU in the cellular mobile network, which solves the problem of multi-base positioning system in the prior art. The deployment time of positioning base stations is too long, the positioning accuracy is not high, the algorithm is complex, the real-time performance is low, and the one-time investment is too large, etc.

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