Height difference-based wireless positioning method and terminal

A wireless positioning and height difference technology, applied in the field of positioning, can solve the problems of complex ranging methods, affecting positioning accuracy, and difficulty in achieving the best filtering algorithm effect, so as to reduce positioning complexity, reduce calculation burden, and improve positioning accuracy Effect

Active Publication Date: 2012-10-10
BEIJING UNIV OF POSTS & TELECOMM +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Because the existing wireless positioning method needs to return the positioning parameters to the service desk, the service desk performs positioning, and the terminal cannot locate itself, and the calculation is all on the side of the service desk, making it difficult for the service desk to support massive users to locate in parallel and count user locations in real time Information is more difficult; in addition, the real-time performance of the positioning information return is difficult to guarantee, which makes it difficult for many filtering algorithms to reach the best state, affecting the positioning accuracy, and the OFDM modulation mode is used, and the ranging method is complicated

Method used

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  • Height difference-based wireless positioning method and terminal
  • Height difference-based wireless positioning method and terminal
  • Height difference-based wireless positioning method and terminal

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Embodiment 1

[0059] This embodiment provides a wireless positioning method based on altitude difference. By improving the LTE (Long Term Evolution, Long Term Evolution) signal system, the method enables the base station to have the function of sending positioning signals carrying navigation messages, and realizes that the terminal autonomously locates according to the navigation messages. position. Among them, this embodiment takes the positioning information such as the altitude information at the base station and the air pressure value contained in the navigation message as an example, so that the terminal determines the current altitude information through the altitude information at the base station, the air pressure value and the local air pressure value, so as to use the current altitude information. to locate. see figure 1 , the method flow provided by this embodiment is specifically as follows:

[0060] 101: The terminal receives a positioning signal carrying a navigation message...

Embodiment 2

[0081] Embodiment two

[0082] This embodiment provides a wireless positioning method based on altitude difference. This method combines the content provided by the first embodiment above, and by improving the LTE signal system, the terminal can achieve autonomous positioning under the premise of ensuring positioning accuracy. For ease of description, this embodiment takes a CDMA (Code Division Multiple Access, Code Division Multiple Access) spreading sequence as a positioning signal and a PRS as an example to illustrate a wireless positioning method based on height difference. see figure 2 , the method flow provided by this embodiment is specifically as follows:

[0083] 201: The base station obtains the navigation message, the navigation message contains positioning information, and the positioning information includes at least altitude information and air pressure value at the base station;

[0084] Wherein, when the base station obtains the navigation message, it specif...

Embodiment 3

[0119] This embodiment provides a terminal, and the terminal is configured to perform terminal-side functions in the height difference-based wireless positioning method provided in the first and second embodiments above. see image 3 , the terminal includes:

[0120] The receiving module 31 is used to receive the positioning signal carrying the navigation text sent by the base station, the navigation text contains positioning information, and the positioning information includes at least altitude information and air pressure value at the base station;

[0121] An acquisition module 32, configured to acquire the navigation message carried in the positioning signal received by the receiving module 31;

[0122] The positioning module 33 is configured to perform positioning according to the positioning information contained in the navigation message obtained by the obtaining module 32 .

[0123] Among them, the receiving module 31 is specifically used to receive the pilot signal...

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Abstract

The invention discloses a height difference-based wireless positioning method and a terminal and belongs to the technical field of positioning. The method comprises the following steps of: receiving a positioning signal by the terminal, wherein the positioning signal carries a navigation message and is sent by a base station and the navigation message comprises positioning information, and the positioning information at least comprises the height information and air pressure value of the base station; and acquiring the navigation message carried in the positioning signal, and positioning according to the positioning information contained in the navigation message. According to the invention, the positioning signal carrying the navigation message and transmitted by the base station is received, the navigation message is acquired according to the positioning signal, and automatic positioning can be realized according to the positioning information in the navigation message, so that the computational burden of a server counter is reduced. In addition, compared with positioning through an orthogonal frequency division multiplexing (OFDM) modulation mode, the method provided by the embodiment of the invention can improve the positioning accuracy and reduce the positioning complexity.

Description

technical field [0001] The present invention relates to the field of positioning technology, in particular to a wireless positioning method and terminal based on height difference. Background technique [0002] With the development of communication technology, the application range of wireless positioning is getting wider and wider. Combined with various wireless signals, such as Chirp signals, Zigbee (Zigbee) signals, UWB (Ultra Wideband, ultra-wideband) signals and pilot signals in communication systems, wireless positioning can be applied in different fields and enrich people's lives . How to improve the accuracy of wireless positioning and make it better serve the public is the focus of wireless positioning research. [0003] In the existing wireless positioning method, PRS (Positioning Reference Signals, positioning reference signal) is designed for the OFDM (Orthogonal Frequency Division Multiplexing) system, which is used for the configuration of the downlink wirele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W64/00H04L5/00
Inventor 邓中亮王佳袁协尹会明谢飞鹏刘倩倩
Owner BEIJING UNIV OF POSTS & TELECOMM
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