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A wireless network joint positioning method and system

A joint positioning and wireless network technology, applied in the field of wireless networks, can solve the problems of time extension, excessive synchronization power consumption, low efficiency, etc., and achieve the effect of eliminating clock errors, reducing signal overhead and time-consuming ranging

Active Publication Date: 2022-03-11
TSINGHUA UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] The present invention provides a wireless network joint positioning method and system to solve the defects of excessive synchronization power consumption, low efficiency and time extension existing in the prior art

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  • A wireless network joint positioning method and system
  • A wireless network joint positioning method and system
  • A wireless network joint positioning method and system

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Embodiment Construction

[0047] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0048] Aiming at the problems existing in the prior art, the present invention proposes an efficient joint ranging method for wireless network positioning, so as to deal with clock asynchrony and time-varying drift of each positioning node. Compared with the traditional method, this method effectively reduces the time-consuming ranging and reduces the ranging signal overhead while ensuring th...

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Abstract

The present invention provides a wireless network joint positioning method and system, including: obtaining time stamp information according to ranging signals of multiple nodes to be positioned; based on the time stamp information, calculating distance information between any two nodes; Positioning information of the plurality of nodes to be positioned is obtained from the distance information between any two nodes. The joint positioning method adopted in the present invention can effectively eliminate the problem of decreased ranging accuracy caused by clock errors between nodes, greatly reduce signal overhead and time-consuming ranging, and realize high-precision network ranging and positioning under low resource load.

Description

technical field [0001] The present invention relates to the technical field of wireless networks, in particular to a wireless network joint positioning method and system. Background technique [0002] High-precision location information brings convenience to people's lives. Satellite-based navigation systems are the most common positioning systems, but they cannot meet the centimeter-level positioning accuracy requirements due to factors such as building occlusion, signal attenuation, and electromagnetic interference. Due to the advantages of low hardware cost and wide coverage, the wireless network system has been widely concerned by the industry and academia in recent years, and is regarded as an important part of the seamless coverage positioning system. [0003] Different from the satellite navigation system, the clocks of each node in the wireless network system are often not synchronized, and the ranging error caused by this synchronization error is usually on the orde...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/02H04W4/06H04W56/00H04W64/00H04J3/06
CPCH04W4/023H04W4/025H04W4/06H04W56/001H04W64/00H04J3/0638
Inventor 沈渊赵涵颖张子健
Owner TSINGHUA UNIV