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Distance detection method and device

A technology of distance detection and propagation delay, which is applied in the direction of location-based services, electrical components, wireless communication, etc., and can solve problems such as actual distance error, signal propagation distance length and space linear distance deviation, etc.

Active Publication Date: 2010-11-03
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

Examples

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Embodiment Construction

[0031] Embodiments of the present invention provide a distance detection method and device, which are used to improve the detection accuracy of signal propagation distances.

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

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

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

[0035] S101. The distance detecting device performs channel estimation on a subcarrier for a channel between a base station and ...

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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 invention relates to the field of communication technology, in particular to a distance detection method and device. Background technique [0002] There are many positioning technologies in the Long Term Evolution (LTE) system, such as: positioning technology based on Cell ID (Cell ID), multi-base station positioning technology based on multi-cell Time Difference of Arrival (OTDOA, Observed Time Difference Of Arrival), global positioning based System-assisted positioning (GPS, Assisted-Global Positioning System) positioning technology, indoor positioning technology based on baseband unit (BBU, Base Band Unit) + remote radio unit (RRU, Remote Radio Unit) positioning and based on 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...

Claims

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Application Information

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IPC IPC(8): H04W4/02H04W64/00
Inventor 秦飞张利杰
Owner DATANG MOBILE COMM EQUIP CO LTD
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