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Multi-base-station hybrid location method and device

A hybrid positioning, multi-base station technology, applied in electrical components, wireless communication and other directions, can solve the problem of lack of consideration of differences in the signal propagation environment of base stations, and achieve the effect of high positioning accuracy

Active Publication Date: 2013-06-26
CHINA TELECOM CORP LTD
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Problems solved by technology

[0005] The purpose of the present invention is to propose a multi-base station hybrid positioning method and device, which can solve the problem that the existing multi-base station positioning algorithm lacks consideration of the difference in the propagation environment of base station signals in different directions, and reduce the impact of the wireless propagation environment on the time difference positioning technology as much as possible. error

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[0059] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0060] First, some special terms appearing in this article are defined as follows:

[0061] Cell: The area covered by the wireless signal of the base station in the mobile communication network. Each base station can cover multiple cells. Usually, one base station can cover three sector cells with a radius of about 120 degrees. Each cell has a unique identifier. As an example, in In a CDMA network, the identifier of a cell is BSID (base station ID) + PN (channel code).

[0062] PN: It is the system identification of the wireless channel code in the CDMA wireless communication network. The system allocates a wireless channel for each wireless cell, and uses PN as the identification. In mobile communication networks of other standards such as WCDMA, TD-SCDMA, and LTE, other names may be used for the identification of wi...

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Abstract

The invention relates to a multi-base-station hybrid location method. The multi-base-station hybrid location method comprises the steps of reading pilot frequency information of base stations on the periphery of a terminal, and enabling the pilot frequency information to comprise arrival time difference and pilot frequency intensity of one or a plurality of cells; obtaining main cell PN, and determining position coordinates and sector ranges of serving base stations according to the main cell PN; calculating distances according to the corresponding arrival time difference of a cell PN at least comprising the main cell PN, and initially determining an area where the terminal is located according to the distances and the position coordinates and the sector ranges of the serving base stations; screening neighbor cell PN according to a threshold value of the pilot frequency information; performing correction refinement on the initially determined area according to the main cell PN and the pilot frequency information corresponding to the screened neighbor cell PN, and determining the accurate position of the terminal. The invention relates to a multi-base-station hybrid location device. According to the multi-base-station hybrid location method and device, the problem that consideration on environmental differences of base station signal transmission in different directions in an existing multi-base-station location algorithm is lacked can be solved, and errors in a time difference location technology caused by the influence of a wireless transmission environment can be reduced as far as possible.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a multi-base station hybrid positioning method and device. Background technique [0002] Multi-base station positioning refers to a positioning method that uses the terminal to measure the wireless signals of multiple surrounding base stations to calculate the terminal's geographic location. At present, the most common and widely used positioning method is the positioning method using time difference. This positioning method uses the arrival time parameter of the signal to calculate the distance between the terminal and multiple surrounding base stations, and then solve it through mathematical processing. Determine the end position. For example, a circular positioning method (Time Of Arrival, TOA for short), a hyperbolic positioning method (Time Different Of Arrival, TDOA for short), and the like. [0003] Taking the hyperbolic positioning method (Time Diff...

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Application Information

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IPC IPC(8): H04W64/00
Inventor 梁宇杰李一彪王爱宝杨杰卢燕青
Owner CHINA TELECOM CORP LTD
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