Methods and devices for thinning and downloading offline positioning data
A positioning data and offline technology, applied in the computer field, can solve the problems of waste of traffic and storage space, and achieve the effect of avoiding waste of traffic and terminal storage space
Active Publication Date: 2019-04-05
ALIBABA (CHINA) CO LTD
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[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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[0058] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0059] see figure 2 , figure 2 It is an implementation flowchart of the offline positioning data thinning method described from the server side provided in the embodiment of this application, and the method includes:
[0060] Step S201, receiving the offline positioning data download request sent by the terminal;
[0061] The offline positioning data download request carries the area and shape of the offline positioning data to be downloaded....
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The invention discloses methods and devices for thinning and downloading offline positioning data. The method for thinning offline positioning data includes the following steps: receiving an offline positioning data downloading request sent by a terminal, wherein the offline positioning data downloading request carries the area and shape of offline positioning data to be downloaded; confirming a thinning rule of offline positioning data according to the shape; reading target data from a positioning database according to the area and the thinning rule; and sending the target data to the terminal. Through the scheme of the invention, the target data belonging to the area and conforming to the thinning rule can be read from the positioning database. Compared with the method for acquiring datain the whole area in the prior art, the waste of traffic and terminal storage space is avoided.
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...
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IPC IPC(8): H04L29/08
CPCH04L67/06H04W4/021H04L67/52
Inventor 李建章
Owner ALIBABA (CHINA) CO LTD