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1. (WO2018121084) POSITIONING METHOD, DEVICE AND SYSTEM

Pub. No.:    WO/2018/121084    International Application No.:    PCT/CN2017/109753
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Wed Nov 08 00:59:59 CET 2017
IPC: H04W 4/02
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
华为技术有限公司
Inventors: TAN, Ping
谭平
CHENG, Yuan
程远
Title: POSITIONING METHOD, DEVICE AND SYSTEM
Abstract:
Provided is a positioning method applied to a positioning system composed of a positioning tag and a positioning base station group. The positioning base station group comprises at least two positioning base stations. The method comprises: a positioning tag regularly sending a positioning tag broadcast message to a positioning base station group; the positioning tag determining, according to a positioning tag broadcast response message returned from the positioning base station group, whether the positioning tag has left a positioning area of the positioning base station group; and if the positioning tag determines that the positioning tag has left the positioning area of the positioning base station group, the positioning tag shutting down positioning service functions on itself apart from a departure determination function. Thus, the power consumption of a positioning tag can be saved, so that a power source in the positioning tag can continue serving for a longer period of time.