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Positioning method, device and system for Internet of Things equipment

A technology of IoT devices and networking devices, applied in the field of communication, can solve problems such as large network bandwidth, limited network bandwidth, and long cold start positioning time

Inactive Publication Date: 2020-05-08
BEIJING HUAHONG INTEGRATED CIRCUIT DESIGN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this positioning technology is limited by the network bandwidth, and the ephemeris data download time is long, resulting in a long cold start positioning time, which cannot meet the needs of specific scenarios.
Although assisted positioning A-GPS technology can be used to solve such problems, A-GPS technology requires a large network bandwidth to achieve accurate positioning
The Internet of Things is a narrow-band network that requires solutions with low power consumption, wide coverage, and massive connections. This will inevitably greatly reduce the network bandwidth for wireless transmission, which will adversely affect AGPS technology. The transmission time of location data will be extended, resulting in Decrease in Positioning Efficiency

Method used

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  • Positioning method, device and system for Internet of Things equipment
  • Positioning method, device and system for Internet of Things equipment
  • Positioning method, device and system for Internet of Things equipment

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Embodiment Construction

[0139] In some positioning methods of IoT devices, the positioning method of Time Difference Of Arrival (TDOA) is usually adopted, that is, the IoT device sends a segment to multiple base stations and / or gateways within the network range near its location The location data signal, and these base stations and / or gateways can then transmit the location data signal to the web server after receiving it, so that the web server can calculate the Where IoT devices are located.

[0140] However, since the positioning accuracy of TDOA technology is closely related to the signal bandwidth, the wider the bandwidth, the higher the accuracy. Most of the Internet of Things networks (LPWAN) are narrowband systems, and the communication protocol is relatively simple, which will inevitably greatly reduce the network bandwidth of wireless transmission, which will adversely affect AGPS technology, and the transmission time of location data will be extended, resulting in positioning. Reduced eff...

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Abstract

The invention discloses a positioning method, device and system for Internet of Things equipment, and the method, device and system can effectively improve the positioning rate, reduce the positioningpower consumption, and can meet requirements of low power consumption and quick positioning in the Internet of Things. The method comprises the following steps: after to-be-positioned Internet of Things equipment receives a positioning request, whether current ephemeris data need to be updated is judged according to the positioning request, if not, positioning is carried out by means of the current ephemeris data, if so, an ephemeris data downloading request is sent to a GNSS platform, the GNSS platform downloads the ephemeris data according to the ephemeris data downloading request and determines ephemeris data different from the current ephemeris data stored in the to-be-positioned Internet of Things equipment in the downloaded ephemeris data as differential ephemeris data, and the differential ephemeris data is returned to the to-be-positioned Internet of Things equipment, so that the to-be-positioned Internet of Things equipment can perform accurate positioning according to the differential ephemeris data and update the current ephemeris data.

Description

technical field [0001] The present application relates to the field of communication technology, and in particular to a positioning method, device and system for an Internet of Things device. Background technique [0002] The Internet of Things is an important part of the new generation of information technology. For each device in the Internet of Things, whether it is stationary or moving, in many cases, it is necessary to know the current location information of these Internet of Things devices in time, so as to realize Security monitoring of each IoT device. [0003] Most of the existing positioning technologies are implemented based on the Global Navigation Satellite System (GNSS for short), such as the Global Positioning System (GPS) in the United States, Glonass in Russia, and Galileo in Europe. , my country's Beidou satellite navigation system, and related augmentation systems, such as the United States' Wide Area Augmentation System WAAS, Europe's European Geostation...

Claims

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Application Information

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IPC IPC(8): G01S19/25G01S19/30G01S19/27G01S19/33G01S19/41G01S19/42
CPCG01S19/258G01S19/27G01S19/30G01S19/33G01S19/41G01S19/421
Inventor 陈毅平
Owner BEIJING HUAHONG INTEGRATED CIRCUIT DESIGN
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