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Method, device and system for detecting target

A target and symbol technology, applied in the field of target detection, can solve problems such as the inability to achieve target detection, lack of hardware, etc.

Active Publication Date: 2021-08-06
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, mobile communication devices (such as WiFi devices, wearable devices, etc.) usually do not have these dedicated hardware
Without changing the hardware of the communication equipment, the detection of the target cannot be realized by using the above-mentioned detection signal in the communication equipment

Method used

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  • Method, device and system for detecting target
  • Method, device and system for detecting target
  • Method, device and system for detecting target

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Embodiment Construction

[0058] The technical solution in this application will be described below with reference to the accompanying drawings.

[0059] The technical solution of the embodiment of the present application can be applied to a wireless local area network (wireless local area network, WLAN), and the embodiment of the present application can also be applied to the 802.11 series protocols of the Institute of Electrical and Electronics Engineers (IEEE) currently adopted by the WLAN. Any one of the protocols, for example, can be applied to the communication system of the IEEE 802.11az protocol currently supported by WLAN, or to the communication system of the next generation protocol supporting 802.11az, or to the communication system of 802.11be , or applied to a wireless fidelity sensing (wireless fidelity sensing) communication system, or other scenarios that require positioning.

[0060] For ease of understanding, before describing the embodiments of the present application, a brief intro...

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PUM

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Abstract

Provided are a method, device and system for detecting a target, the method comprises the following steps of a first device determining N first orthogonal frequency division multiplexing (OFDM) symbols, N being a positive integer greater than or equal to 2, each of the N first OFDM symbols comprising a first subcarrier, phases of first subcarriers in any two adjacent first OFDM symbols in the N first OFDM symbols are continuous, and data carried by the first subcarriers are preset data; and the first device sends the N first OFDM symbols, wherein the first subcarrier in the N first OFDM symbols is used for detecting a target. According to the target detection method provided by the embodiment of the invention, the target detection precision of the communication equipment can be improved under the condition that the hardware of the communication equipment is not changed.

Description

technical field [0001] The present application relates to the field of wireless communication, and more specifically, to a method, device and system for detecting targets. Background technique [0002] When a radar system is used to detect a target (for example, distance measurement or speed measurement), the transmitter of the radar system transmits a detection signal known to the receiver. The detection signal is received by the receiving end of the radar system after being reflected by the target. The receiving end can detect the target according to the phase difference of the received detection signal. [0003] The above positioning process requires dedicated hardware for implementation. However, mobile communication devices (eg, WiFi devices, wearable devices, etc.) generally do not have these dedicated hardware. Without changing the hardware of the communication device, the detection of the target cannot be realized by using the above-mentioned detection signal in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04L5/00
CPCH04L27/2688H04L27/2691H04L5/0008H04L5/0007H04L5/0094H04L27/2613H04L27/26134H04L27/2662G01S7/006G01S7/0232
Inventor 罗嘉金刘辰辰韩霄于健淦明周保建张美红彭晓辉杜瑞荣志超
Owner HUAWEI TECH CO LTD