Terminal positioning method and device based on narrowband IOT (Internet of Things)

Abstract

The invention relates to the field of wireless communication, and especially relates to a terminal positioning method and device based on a narrowband IOT (Internet of Things). The method comprises the steps that a positioning server receives time deviation values sent by at least three base stations corresponding to a terminal, wherein the time deviation value sent by one base station representsthe deviation between the receiving time when the base station receives an access message and the start time of a wireless frame head of the base station, and the access message is transmitted by theterminal to the base station based on a positioning request; the positioning server calculates the position of the terminal based on the position information of at least three base stations and the received time deviation values sent by at least three base stations. Therefore, the terminal sequentially transmits the access message to the base stations in turns, thereby completing the positioning based on the position information of the base station and the time deviation values, avoiding the power consumption of the terminal, and guaranteeing the positioning precision. Meanwhile, there is no need of additional cost.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a terminal positioning method and device for narrowband Internet of Things. Background technique [0002] The Internet of Things is an important part of the new generation of information technology, and it is also an important development stage in the information age. The Internet of Things is the Internet that connects things. A technical standard defined by the 3rd Generation Partnership Project (3GPP) standardization organization, it is a narrowband radio frequency technology specially designed for the Internet of Things, featuring indoor coverage, low cost, low power consumption and wide connection. Realizing the positioning of the terminal under the NB-IoT not only enables the terminal to obtain more applications, but also satisfies the management of the terminal, which has attracted more and more attention. At present, there are two main types of positioning m...

AI Technical Summary

Problems solved by technology

[0017] Embodiments of the present invention provide a terminal positioning method and device for narrowband Internet of Things to solve the problem in the prior art that power consumption and cost cannot be reduced while ensuring accuracy

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