Indoor positioning method and system capable of enhancing observed time difference of arrival

A time-of-arrival and indoor positioning technology, applied in the field of mobile communications, can solve problems such as the inability to judge the accuracy of base station positioning, and achieve the effects of fast indoor positioning, improved accuracy, and reduced complexity

Active Publication Date: 2016-11-09
HUIZHOU TCL MOBILE COMM CO LTD
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Problems solved by technology

[0010] In view of the shortcomings of the prior art above, the purpose of the present invention is to provide an indoor positioning method and system that enhances the observable time difference of arrival, aiming to solve the problem of indoor positioning in the prior art when multiple base station divisions are located at different heights. When , it is impossible to determine which base station has the greatest impact on positioning accuracy

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  • Indoor positioning method and system capable of enhancing observed time difference of arrival
  • Indoor positioning method and system capable of enhancing observed time difference of arrival
  • Indoor positioning method and system capable of enhancing observed time difference of arrival

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Embodiment Construction

[0044] The present invention provides an indoor positioning method and system that enhances the observable time difference of arrival. In order to make the purpose, technical solution and effect of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0045] Please refer to image 3 , which is a flowchart of a preferred embodiment of the indoor positioning method for enhancing observable time difference of arrival in the present invention. Such as image 3 As shown, the indoor positioning method of the enhanced observable time difference of arrival comprises the following steps:

[0046] Step S100, according to the observable time difference of arrival, transform the three-dimensional hyperboloid formed by the use...

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Abstract

The invention provides an indoor positioning method and system capable of enhancing the observed time difference of arrival. The indoor positioning method comprises the steps of converting a three-dimensional hyperboloid formed by user equipment, a first base station and a second base station into a two-dimensional hyperbola which takes the bottom part of the first base station and the bottom part of the second base station as focuses according to the observed time difference of arrival, wherein the user equipment is located at the two-dimensional hyperbola; and dividing the difference between a first distance between the user equipment and the bottom part of the first base station and a distance between the user equipment and the bottom part of the second base station by the light speed so as to acquire the time difference of arrival. The method and the system provided by the invention realize quick indoor positioning, greatly improve the positioning accuracy, and are particularly applicable to a condition that a plurality of base stations are arranged at different heights respectively. In addition, the complexity of an algorithm is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to an indoor positioning method and system for enhancing observable time difference of arrival. Background technique [0002] At present, indoor positioning is becoming more and more popular. Traditional indoor positioning algorithms include GNSS (Global Navigation Satellite System), E-CID, and OTDOA (Observed Time Difference of Arrival). [0003] In high-density environments where there are no significant spaces, such as indoors or in forests, GNSS is unavailable and any GNSS-based positioning technology becomes unreliable. [0004] In Rel-9 of 3GPP (Release 9 2009Q4 enhancement of SAES, interoperability between WiMAX and LTE / UMTS, DC-HSDPA and DC-HSUPA including MIMO), the measurement of timing advance has been improved, so the first Type 1 measurement and Type 2 measurement. In the second type of measurement method, the timing advance is estimated by receiving a PR...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/12G01S5/02
CPCG01S5/021G01S5/12
Inventor 唐彦波
Owner HUIZHOU TCL MOBILE COMM CO LTD
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