Micro Tracker Reference Guide FW 1.7 V1.1
Page 20 of 39
11th october 2018
Restricted distribution
4.6.3.2
Low power GPS
In this mode, the device sends the data given by the GPS module before the
agps_timeout
delay expiry and
the position calculation is done in our server.
If the GPS module didn’t succeed in having enough data to provide to the server, a
LP-GPS timeout message
is sent instead of a LP-GPS data message.
Note:
1-
If a period smaller than a
gps_timeout
is set for
ul_period
the LP-GPS timeout used will be
ul_period
instead of a
gps_timeout
4.6.3.3
WIFI
Since a WIFI scan is always done within five seconds, there is no timeout parameter.
Once the scan is done, BSSID are sent via LoRa with the related RSSI and the position calculation is done in
our server.
In a multi technology geolocation strategy, a WIFI scan with less than 3 BSSID triggers a technology switch.
Regardless the number of BSSID (including 0) a WIFI position is sent.
In the case where the communication fails with the WIFI module, the device sends either a WIFI failure
message or a WIFI timeout message.
4.6.3.4
BLE
In this mode, the device scans to find up to
ble_beacon_count
number of BLE beacons before the
ble_beacon_timeout
delay expiry.
Once the scan is done, the BLE beacon MAC addresses are sent via LoRa with the related RSSI
In the case where the BLE module fails to detect BLE beacons, the device sends a
BLE failure message
.
Notes:
1-
BLE Beacons must be at least compliant with:
•
iBeacon (Apple)