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Method for locating wireless and wired messages based on integration of TOF and TDOA

A technology that integrates positioning and wireless. It is applied in the directions of location-based services, wireless communications, electrical components, etc., and can solve problems such as cumbersome processes.

Inactive Publication Date: 2018-11-16
西安维德汇通数字技术有限公司
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  • Abstract
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  • Claims
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Problems solved by technology

[0010] When the above method is used for positioning, the time difference is used for positioning calculation, which requires time synchronization. This requires time synchronization operation every time communication is performed to ensure the normal operation of the system. This process is relatively cumbersome.

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  • Method for locating wireless and wired messages based on integration of TOF and TDOA
  • Method for locating wireless and wired messages based on integration of TOF and TDOA
  • Method for locating wireless and wired messages based on integration of TOF and TDOA

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Embodiment Construction

[0040] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, where the schematic embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0041] refer to Figure 1 to Figure 6 , the present invention discloses a method for locating wireless wired messages based on TOF / TDOA fusion. The steps are as follows: the label node wakes up periodically and sends a Blink signal, the Blink signal contains control header and label MAC address information, and the anchor node receives the After the information, record the time of arrival TOA, and transmit the TOA information to the positioning server through the network protocol data packet, and the positioning server performs positioning analysis and calculation based on the TOA information.

[0042] It also includes that the anchor node periodically sends Blink data packets, the anchor...

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Abstract

The invention provides a method for locating wireless and wired messages based on the integration of TOF and TDOA, and the method is characterized in that the method comprises the following steps: waking up a tag node periodically and transmitting a Blink signal, wherein the Blink signal comprises a control header and tag MAC address information; recording to the TOA (time of arrival) after an anchor node receives the information, transmitting the TOA information to a location server through a network protocol data packet, and enabling the location server to perform the locating, analysis andcalculation based on the TOA information. According to the method, only the TOA needs to be recorded and the synchronization calculation of the TOA can be completed, and the time synchronization between base stations does not need to be performed.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to the technical field of wireless wired message positioning, in particular to a method for locating wireless wired messages based on TOF / TDOA fusion. Background technique [0002] The real-time positioning system is also RTLS (Real Time Location Systems). RTLS is a signal-based radio positioning method that can be active or passive. RTLS enables real-time knowledge of the exact location of a located property, person, vehicle or other located object. [0003] TDOA-based RTLS: The current wireless-based TDOA method has two key technologies, one is time synchronization between base stations, and the other is label sending messages. The base station calculates the time difference of arrival according to the time when the message is received, and then The hyperbolic algorithm is used to realize two-dimensional and three-dimensional positioning, and the positioning accurac...

Claims

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Application Information

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IPC IPC(8): H04W4/021H04W64/00
CPCH04W4/021H04W64/006
Inventor 侯波钟正国张峰康严军段新龙高闯
Owner 西安维德汇通数字技术有限公司
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