A method and device for extracting and downloading offline positioning data

Abstract

The invention discloses an offline positioning data thinning and downloading method and device. The offline positioning data thinning method includes: receiving an offline positioning data download request sent by a terminal, and the offline positioning data download request carries offline positioning data to be downloaded area and shape; according to the shape, confirm the thinning rule of offline positioning data; read the target data from the positioning database according to the area and the thinning rule; send the target data to the terminal. It can be seen that the solution of the present invention can read the target data in the area that conforms to the thinning rule from the positioning database, and the method of obtaining data in the entire area in the prior art avoids waste of traffic and terminal storage space .

Description

technical field [0001] The invention relates to the field of computer technology, in particular to a method and device for extracting and downloading offline positioning data. Background technique [0002] Offline network positioning is a very commonly used positioning technology at present. Before using this technology to obtain the position of the terminal in the positioning area, it is necessary to download positioning data from the network positioning database in advance. [0003] In the prior art, the implementation process of downloading positioning data is as follows: figure 1 shown, including: [0004] Step S101, the server receives the download request sent by the terminal, the download request carries at least one geohash string, each geohash string corresponds to the latitude and longitude of a rectangular area, and the latitude and longitude of the positioning area belongs to the rectangular area corresponding to the at least one geohash string latitude and lon...

AI Technical Summary

Problems solved by technology

[0007] It can be seen from the above that the prior art obtains the positioning data from the network positioning database according to the rectangular area corresponding to at least one geohash string, so the quantity of the positioning data obtained may be greater than the quantity of the positioning data in the positioning area, and, in In some scenarios, it is not necessary to obtain all the positioning data in the positioning area. If the positioning data is still downloaded according to the existing technology, it will cause the terminal to download a lot of useless data, resulting in a waste of traffic and storage space

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