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Ground mobile communication network positioning method assisted by communication broadcast satellite signal

A technology of mobile communication network and broadcasting satellite, which is applied in the field of radio positioning of ground mobile communication network, can solve the problems of time delay and frequency expansion, achieve the effect of stable satellite channel, improve measurement accuracy, and reduce equipment changes

Active Publication Date: 2011-10-12
NAT ASTRONOMICAL OBSERVATORIES CHINESE ACAD OF SCI
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AI Technical Summary

Problems solved by technology

Multipath causes delay spread, frequency spread and angle spread

Method used

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  • Ground mobile communication network positioning method assisted by communication broadcast satellite signal
  • Ground mobile communication network positioning method assisted by communication broadcast satellite signal
  • Ground mobile communication network positioning method assisted by communication broadcast satellite signal

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Experimental program
Comparison scheme
Effect test

specific Embodiment approach C

[0066] The specific implementation plan takes the CMB star satellite enhanced ground mobile network positioning scheme as an example:

[0067] 1. System plan

[0068] The added satellite system consists of three parts: space segment (satellite transponder), terminal network and central ground station (see figure 1 ). However, the functional network that should be configured in the system does not need to be specially established. Its orbit measurement function and differential correction function can be undertaken by some terminals in the application network. Part of the measurement data obtained by these terminals can be processed to complete the above functions.

[0069] 2. Satellite program

[0070] The satellite is a communication satellite with S-band signal forwarding function (such as CMB star, ChinaMobile Broadcasting Satellite). The satellite will be positioned between 101° and 115.5° east longitude, currently tentatively set at 115.5° east longitude. There is an ...

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Abstract

The invention discloses a ground mobile communication network positioning method assisted by a communication broadcast satellite signal, relates to a radio positioning technology and in particular relates to a radio positioning technology which is based on a ground mobile communication network and can be used for enhancing a signal by virtue of a communication broadcast satellite. The method comprises the following steps: forwarding a positioning signal, a time scale and a relevant telegraph text by use of a communication broadcast satellite with a forwarding function, or realizing high-precision time synchronization of the ground mobile communication network and the high-precision positioning and time service of a mobile communication set (comprising a mobile phone) by use of a spread-spectrum signal (comprising a pilot frequency frame) in the communication broadcast signal. The method disclosed by the invention has the characteristics that high-precision time synchronization is realized and three-dimensional space positioning precision is improved without changing or slightly changing the equipment structure of the ground mobile communication network base station, the mobile communication set (comprising a mobile phone) and the like.

Description

technical field [0001] The invention relates to the technical field of radio positioning and communication, in particular to a method for realizing radio positioning of a ground mobile communication network. Background technique [0002] The radio positioning of the ground mobile communication network refers to the method and system for estimating the distance or direction of the mobile station by detecting the characteristic parameters of the radio wave signal propagated between the base station and the mobile station with known positions. Existing mobile positioning methods of this type include: Cell of Origin (COO) positioning; Angle of Arrival (AOA) positioning; Time of Arrival (TOA) positioning; Time Difference of Arrival (TDOA) positioning; Enhanced Observation Time Difference (E-OTD) positioning and A -GPS (Assisted Global Positioning System) positioning. Among them, the first five methods are radio positioning implementation methods relying only on the mobile commun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W56/00H04W64/00
Inventor 施浒立吕子平邓中亮王兆瑞朱海龙裴军崔君霞张丽蓉徐连明韩可
Owner NAT ASTRONOMICAL OBSERVATORIES CHINESE ACAD OF SCI
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