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Positioning signal generation method, transmitter and positioning system

A technology for positioning signals and sending ends, which is applied in transmission systems, multi-frequency code systems, and services based on location information. It can solve the problems of high cost and occupy communication resources, and achieve the effect of precise positioning.

Active Publication Date: 2014-05-28
BEIJING UNIV OF POSTS & TELECOMM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the GPS positioning method and the mobile terminal positioning method in the prior art are costly and occupy communication resources, the embodiment of the present invention provides a positioning signal generation method, a sending end and a positioning system

Method used

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  • Positioning signal generation method, transmitter and positioning system
  • Positioning signal generation method, transmitter and positioning system
  • Positioning signal generation method, transmitter and positioning system

Examples

Experimental program
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Embodiment 1

[0044] join figure 1 , an embodiment of the present invention provides a method for generating a positioning signal, the method comprising:

[0045] Step 101: The sending end generates a navigation message spreading code;

[0046] Step 102: Perform spread-spectrum modulation on the preset message bit information according to the spread-spectrum code of the navigation message to obtain spread-spectrum modulation information;

[0047] Step 103: Insert spread spectrum modulation information into the downlink pilot time slot of the mobile signal to obtain a positioning signal.

[0048] Wherein, the mobile signal refers to a transmission signal, which may be a third-generation wireless communication transmission signal, and its specific type is not limited, and may be a TD-SCDMA signal, a WCDMA signal, or a CDMA2000 signal.

[0049] The method provided by the embodiment of the present invention generates a positioning signal by inserting spread spectrum modulation information int...

Embodiment 2

[0051] In the following, three kinds of mobile signals are taken as examples to illustrate the solution of the present invention. In practical applications, the positioning signal insertion mechanism can be transplanted to other mobile networks according to the actual network structure, or the insertion position can be changed according to the actual situation.

[0052] see figure 2 In this embodiment of the present invention, an application scenario of generating a TD-SCDMA positioning signal when the mobile signal broadcast by the sending end is a TD-SCDMA signal is taken as an example for description.

[0053] Step 201: The sending end generates a navigation message spreading code;

[0054] Wherein, the navigation message spread spectrum code generated by the sending end is used for the navigation message spread spectrum modulation. Here, the GOLD code with a period of 96 bits is preferably selected as the navigation message spreading code, which can fill up the DwPTS segme...

Embodiment 3

[0064] see Figure 4 In this embodiment of the present invention, an application scenario of generating a WCDMA positioning signal when the mobile signal broadcast by the sending end is a WCDMA signal is taken as an example for description.

[0065] Step 301: The sending end generates a navigation message spreading code;

[0066] Step 302: The sending end completes spread spectrum modulation according to the generated navigation message spread code and message bit information, and obtains spread spectrum modulation information;

[0067] The steps 301 and 302 are the same as the above steps 201 and 202, and will not be repeated here.

[0068] Step 303: The transmitting end inserts spread spectrum modulation information into the downlink pilot time slot of the wireless frame of the WCDMA signal to obtain a WCDMA positioning signal;

[0069] Among them, see Figure 5 The shown schematic diagram of the insertion of the spreading code of the WCDMA signal, the embodiment of the p...

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Abstract

The invention discloses a positioning signal generation method, a transmitter and a positioning system, which belong to the field of mobile communication. The method comprises the following steps of: generating a navigation message spread spectrum code by using the transmitter; performing spread spectrum modulation on preset message bit information according to the navigation message spread spectrum code to obtain spread spectrum modulation information; and inserting the spread spectrum modulation information into a downlink pilot time slot of a mobile signal to obtain a positioning signal. The transmitter comprises a spread spectrum code generation module, a spread spectrum modulation module and an inter-cut framing module. The positioning system comprises the transmitter and a receiver. By the method, the transmitter and the system, the spread spectrum modulation information is inserted into the downlink pilot time slot of the mobile signal to generate the positioning signal, and a spread spectrum modulation signal is inserted into the mobile signal, so that the receiver can accurately capture and track the positioning signal to provide a positioning function.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a method for generating a positioning signal, a sending end and a positioning system. Background technique [0002] In recent years, people's demand for precise indoor and outdoor positioning is increasing day by day, especially in emergency situations, accurate positioning is even more important. The positioning technologies in the prior art mainly include: GPS positioning, mobile terminal base station positioning, and the like. [0003] In the process of realizing the present invention, the inventor finds that there are following problems in the prior art: [0004] The method of GPS positioning needs to communicate with satellites, so the cost of existing GPS positioning terminals is relatively high. [0005] The mobile terminal base station positioning method needs to communicate with the base station, so the mobile terminal needs to have a positioning function, and a lar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26H04W4/02H04B1/69
Inventor 邓中亮余彦培袁协邓耀宇吕子平施浒立李合敏
Owner BEIJING UNIV OF POSTS & TELECOMM