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Distance detection method and device

A technology of distance detection and propagation delay, which is applied in the service, electrical components, wireless communication and other directions based on location information, and can solve the problems of signal propagation distance deviation, space straight-line distance deviation, actual distance error, etc.

Active Publication Date: 2013-06-26
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0010] However, the signal propagation time delay obtained by the prior art is the multi-scattering path time delay. deviation
[0011] In summary, the distance between the UE and the signal receiver obtained by the existing technology has an error with the actual distance

Method used

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  • Distance detection method and device
  • Distance detection method and device

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Embodiment Construction

[0031] The embodiment of the present invention provides a distance detection method and device to improve the detection accuracy of the signal propagation distance.

[0032] In the embodiment of the present invention, by estimating the propagation time delay of the first path of multiple scattering paths in space, that is, the propagation time delay of the shortest scattering path, the estimation accuracy of the signal propagation distance between the UE and the distance detection device is improved, thereby further improving the estimation accuracy of the UE. The positioning accuracy.

[0033] The technical solutions provided by the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0034] See image 3 , The distance detection method provided by the embodiment of the present invention generally includes the steps:

[0035] S101. The distance detection device performs channel estimation on the channel between the base station an...

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Abstract

The invention discloses a distance detection method and a distance detection device, which are used for improving signal transmission distance detection accuracy. The distance detection method provided by the invention comprises that: the distance detection device performs channel estimation on a channel used for transmitting signals of user equipment (UE) on a sub-carrier to obtain a channel estimation value; the distance detection device determines first path transmission delay in a plurality of scattering paths on the channel by the channel estimation value; and the distance detection device determines a distance between the distance detection device and the UE according to the first path transmission delay.

Description

Technical field [0001] The present invention relates to the field of communication technology, in particular to a distance detection method and device. Background technique [0002] There are multiple positioning technologies in the Long Term Evolution (LTE) system, such as: cell ID-based positioning technology, multi-cell positioning based on Observed Time Difference Of Arrival (OTDOA), multi-base station positioning technology based on global positioning System-assisted positioning (GPS, Assisted-Global Positioning System) positioning technology, baseband unit (BBU, Base Band Unit) + remote radio unit (RRU, Remote Radio Unit) positioning indoor positioning technology and based on the direction of arrival (AoA) , Angle of Arrival) + Timing Advance (TA, Timing Advance) positioning single-base station positioning technology, etc. [0003] Among them, the single base station positioning technology based on AoA+TA is a relatively mature positioning technology. Such as figure 1 As sh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/02H04W64/00
Inventor 秦飞张利杰
Owner DATANG MOBILE COMM EQUIP CO LTD
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