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A wireless fidelity wi-fi ranging method, related equipment and system

A WI-FI, wireless fidelity technology, applied in the field of communication, can solve the problems of many times of interaction, long time, low efficiency of measuring distance, etc.

Active Publication Date: 2020-02-14
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The disadvantage of the existing technology is that in the process of executing FTM, the number of interactions between the reference node and the target node is large and takes a long time, resulting in low efficiency of measuring distance

Method used

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  • A wireless fidelity wi-fi ranging method, related equipment and system
  • A wireless fidelity wi-fi ranging method, related equipment and system
  • A wireless fidelity wi-fi ranging method, related equipment and system

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Embodiment Construction

[0089] Both the reference node and the target node described in the embodiments of the present invention are terminal devices (for example, access point (English: Access Point, abbreviated: AP), English: Station, abbreviated: STA) for communication based on Wi-Fi technology. )Wait). The technical solutions in the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings of the present invention.

[0090] See figure 2 , figure 2 It is a schematic flowchart of a WI-FI ranging method provided by an embodiment of the present invention, and the method includes but is not limited to the following steps.

[0091] Step S201: the target node sends a ranging request frame to the reference node, instructing the reference node to send a first empty data packet NDP.

[0092] Specifically, the target node can be artificially triggered to send a ranging request frame to the reference node, or it can send a ranging request frame ...

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Abstract

The embodiment of the present invention discloses a WI-FI ranging method, related equipment and system. The method includes: the target node sends a ranging request frame to the reference node, and instructs the reference node to send the first empty data packet NDP; the target node receives the reference The node sends the first NDP and records the first NDP receiving time of receiving the first NDP, sends the second NDP to the reference node and records the second NDP sending time of sending the second NDP; the target node receives the ranging response frame sent by the reference node , the ranging response frame includes the first NDP sending time of the reference node sending the first NDP and the second NDP receiving time of receiving the second NDP; the target node according to the first NDP receiving time, the second NDP sending time, the first NDP sending time and the second NDP reception time to calculate the distance between the target node and the reference node. By adopting the present invention, the efficiency of distance measurement can be improved.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a wireless fidelity WI-FI ranging method, related equipment and a system. Background technique [0002] The Fine Timing Measurement (English: Fine Timing Measurement, referred to as: FTM) protocol is a protocol for measuring the distance between the target node and the reference node in the Wireless Fidelity (English: Wireless Fidelity, referred to as: Wi-Fi) technology. figure 1 It is a schematic flow chart of measuring the distance between the target node and the reference node based on the FTM protocol in the prior art; the detailed description of each step is as follows: [0003] Step 1: The target node sends an initial FTM request frame (Initial FTM Request) to the reference node to request the reference node to perform FTM. [0004] Step 2: The reference node receives the initial FTM request frame sent by the target node, and sends an acknowledgment message (English...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W64/00H04W24/10H04W84/12
CPCH04W24/10H04W64/00H04W64/003H04W84/12H04W24/08G01S11/02G01S11/00G01S7/295G01S13/765
Inventor 卢恒惠丁志明杜振国
Owner HUAWEI TECH CO LTD
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