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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 excessive synchronization power consumption, time extension, and low efficiency, and achieve the effect of reducing signal overhead and time-consuming ranging, and eliminating clock errors

Active Publication Date: 2021-06-01
TSINGHUA UNIV
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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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  • Wireless network joint positioning method and system
  • Wireless network joint positioning method and system
  • Wireless network joint positioning method and system

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Embodiment Construction

[0047]In order to make the objects, technical solutions, and advantages of the present invention, the technical solutions in the present invention will be described in connection with the drawings of the present invention, and it will be described, and , Not all of the embodiments. Based on the embodiments of the present invention, those of ordinary skill in the art will belong to the scope of the present invention without all other embodiments obtained without creative labor.

[0048]In view of the problems present in the prior art, the present invention proposes an efficient combination ranging method for wireless network positioning to cope with each positioning node clock disorder and present time-bearing shifts. Compared to traditional methods, this method is effective to reduce the range of distance while ensuring synchronous accuracy, reducing the ranging signal overhead.

[0049]figure 1 It is a flow chart of the wireless network joint positioning method provided by the present in...

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Abstract

The invention provides a wireless network joint positioning method and system. The method comprises the following steps: acquiring timestamp information according to ranging signals of a plurality of nodes to be positioned; based on the timestamp information, calculating to obtain distance information between any two nodes; and obtaining the positioning information of the plurality of nodes to be positioned according to the distance information between any two nodes. According to the combined positioning method adopted by the invention, the problem that the ranging precision is reduced due to clock errors among the nodes can be effectively eliminated, the signal overhead and the ranging time consumption are greatly reduced, and high-precision network ranging and positioning under a low resource load are realized.

Description

Technical field[0001]The present invention relates to the field of wireless networks, in particular, to a wireless network combined positioning method and system.Background technique[0002]High-precision location information has brought convenience to people, where satellite-based navigation system is the most common positioning system, but is affected by factors such as building occlusion, signal attenuation and electromagnetic interference, cannot meet the centimeter positioning accuracy requirements. The wireless network system has been widely concerned by the industrial and academic community in recent years in recent years, and is considered an important part of the seamless coverage of positioning systems in recent years.[0003]Unlike satellite navigation systems, the nodes clocks in the wireless network system often do not synchronize, and the ranging error of this synchronization error is usually in meters to dozens of meters. In addition, due to the frequency drift of the clo...

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Application Information

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Patent Type & Authority Applications(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
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