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Positioning method and device based on wireless network

A positioning method and wireless network technology, applied in the field of positioning, can solve the problems that the TDOA positioning method cannot be used, and the anchor node is difficult to achieve strict synchronization, etc.

Inactive Publication Date: 2017-04-05
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in many wireless networks, it is difficult to achieve strict synchronization between anchor nodes, which makes the positioning method based on TDOA unusable in an asynchronous environment.

Method used

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  • Positioning method and device based on wireless network
  • Positioning method and device based on wireless network
  • Positioning method and device based on wireless network

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Embodiment Construction

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0030] figure 1 It is a schematic flowchart of a positioning method based on a wireless network according to an embodiment of the present invention. The positioning method may be executed by a device on the side of the node to be positioned, by a device on the side of the anchor node, or by a third-party independent device other than the side of the node to be positioned and the side of the anchor node. figure 1 Targeting methods include:

[0031] 110. A...

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PUM

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Abstract

The invention provides a positioning method and device based on a wireless network, and the method comprises the steps: obtaining time information which is used for determining the current position of a to-be-located node, wherein the time information records the time when a first detection signal transmitted by the to-be-located node at the current position reaches at least three anchor nodes; determining the differences among the time when the first detection signal reaches at least three anchor nodes according to the recorded historical information and time information; and determining the current position of the to-be-located node according to the positions of at least three anchor nodes and the differences among the time when the first detection signal reaches at least three anchor nodes. The method can accurately determine the differences among the time when the first detection signal reaches at least three anchor nodes, thereby determining the accurate position of the to-be-located node, and avoiding the synchronization among the anchor nodes.

Description

technical field [0001] The present invention relates to the field of positioning, and more specifically, to a wireless network-based positioning method and positioning device. Background technique [0002] At present, there are mainly two positioning methods based on timing: a positioning method based on Time of Arrival (TOA) and a positioning method based on Time Difference of Arrival (TDOA). The TOA-based positioning method not only needs to ensure strict synchronization between the node to be located and the anchor node, but also needs to ensure strict synchronization between the anchor nodes, while the TDOA-based positioning method only needs to ensure strict synchronization between the anchor nodes. However, in many wireless networks, it is difficult to achieve strict synchronization between anchor nodes, which makes the positioning method based on TDOA unusable in an asynchronous environment. Contents of the invention [0003] Embodiments of the present invention pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W64/00G01S5/10H04W4/02
CPCG01S5/10H04W64/00G01S5/06G01S5/021H04W4/02H04W56/001H04W64/003
Inventor 杨浔姜艳平杨晖
Owner HUAWEI TECH CO LTD