Children's watch is a telecommunications device used to locate its
location and transmit data. The device is based on the 4G LTE /
GSM / GPRS cellular network. In order to determine the location,
the device uses the mobile operator's network (LBS), GPS system
and WIFI network.
What's the difference between LBS, GPS and WIFI?
LBS
LBS base station positioning is based on calculating cell phone
location based on differences in mobile communication towers,
and it depends largely on base station coverage density nearby. If
there are many base stations, the positioning is accurate. If there
are several base stations, the positioning is not so good. Overall,
the positioning accuracy is 50-2000 meters.
GPS
Thanks to GPS, the position can be precisely located anywhere
and anytime without much effort. However, it takes some time to
find satellites after starting GPS. usually about 2 minutes.
Positioning has high accuracy. The position may be within 5
meters (when it receives signals from at least four satellites)
Disadvantages: GPS positioning is heavily influenced by weather
and location. When the weather is bad or indoors, in the corner
of a tall building, underground garage (when the sky is not
visible), GPS positioning will be affected.
WIFI
The purpose of WIFI positioning is to solve the problem of precise
positioning indoors, the principle is similar to base station
positioning. Each wireless access point has a globally unique MAC
address. WIFI Positioning is by detecting the MAC addresses of all
nearby wireless access points (WIFI Access Point), comparing the
MAC address coordinates in a database, and then calculating the
location.
