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Positioning method, positioning base station, positioning server and positioning system

A technology for positioning servers and positioning base stations, which is applied in the direction of location information-based services, positioning, and radio wave measurement systems, and can solve problems such as positioning estimation errors and difficult absolute time synchronization of base stations

Active Publication Date: 2018-06-01
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in three-dimensional space, in order to obtain accurate positioning, the TDOA method requires simultaneous acquisition of the time difference between the sending and receiving signals of more than four base stations. To obtain the accurate time difference of arrival of the sending and receiving signals between the base stations, the positioning system needs to ensure absolute time synchronization between the base stations , if the base stations do not achieve absolute time synchronization, the time deviation of sending positioning signals will directly cause the error of positioning estimation, but it is difficult to achieve absolute time synchronization between base stations in the existing communication network

Method used

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  • Positioning method, positioning base station, positioning server and positioning system
  • Positioning method, positioning base station, positioning server and positioning system
  • Positioning method, positioning base station, positioning server and positioning system

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Embodiment Construction

[0086] figure 1 It is a flow chart of Embodiment 1 of the positioning method of the present invention. Such as figure 1 As shown, the positioning method provided in this embodiment includes:

[0087] Step 101, the positioning server respectively receives the information sent by N positioning base stations containing r 1 and R 1 , r 2 and R 2 ,...,r N and R N Information. Among them, r 1 、r 2 ...r N is the moment when the positioning reference signal sent by the terminal to be positioned arrives at the N positioning base stations, R 1 , R 2 …R N It is the moment when the positioning reference signal sent by the reference terminal with a fixed position arrives at N positioning base stations, where N is greater than or equal to 3.

[0088] Step 102, locate the server according to r 1 、r 2 ...r N and R 1 , R 2 …R N Calculate the coordinates of the terminal to be located.

[0089] In the positioning method provided in this embodiment, the positioning server rec...

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Abstract

The embodiment of the invention provides a positioning method. The positioning method comprises the following steps: a positioning server receives information sent by N positioning base stations separately, wherein the information comprises the time information of a positioning reference signal of a terminal to be positioned arriving at the positioning base stations and the time information of a positioning reference signal of a reference terminal with fixed position arriving at the positioning base stations, and the N is greater than or equal to 3; and the positioning server calculates the coordinates of the terminal to be positioned according to the time information. The embodiment of the invention also provides the positioning base station, the positioning server and a positioning system.

Description

technical field [0001] The invention relates to the field of wireless positioning, in particular to a positioning method, a positioning base station, a positioning server and a positioning system. Background technique [0002] With the development of the mobile Internet, the positioning function is used more and more frequently. Generally speaking, positioning is divided into outdoor positioning and indoor positioning. For outdoor positioning, satellite signals can be used, such as the Global Positioning System (Global Positioning System, referred to as: GPS) and China's BeiDou Navigation Satellite System (abbreviated as: BDS); but for indoor positioning in complex indoor or closed environments, Such as large waiting room, large meeting place, gymnasium, large office building, underground mine and other scenes, due to the serious occlusion and attenuation of satellite signals, it is impossible to use it for positioning. Communication system base station for positioning. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W64/00H04W4/02
CPCH04W4/023H04W64/00H04W4/02G01S5/06
Inventor 向平叶魏元庆
Owner ZTE CORP
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