Bluetooth vs Ultra Wide Band

BLE
network RTLS (3)
BLE
smart tag (4)
UWB TWR (5) UWB TDOA (6)
Consumption to identify and send required data to compute position 2 or 3 times less than smart tag 20mAh for scanning+ 20mAh for advertising = 40mAh 120 mA avg for scanning, 200 mA peak for transmitting 200 mA peak for transmitting
tag never receives
anchor receives and transmitsall the time (120 mA avg)
Total time (1) 5s for scanning + 1s for advertising 33ms 5ms (blink transmission + sleep transition)
Max transmitting power +3d
+8db (new chips)
+3d
+8db (new chips)
41.5 dB / MHz (499.2 MHz bandwidth) -41.5 dB / MHz (499.2 MHz bandwidth)
Anchor density High density (2D position): 1 anchor / 35m2
Low density (Zone detection): 1 anchor per 200m2
Wireless beacons - Density depending on precision 1 anchor per 110 m2 1 anchor per 130 m2
Size of data frame iBeacon adv frame format however only mac address is used (see below) iBeacon adv Frame or BLE 5 extended advertisement format 8 - 12 bytes (3.4 - 3.6 ms transmission time per frame) 8 bytes (3.4 ms transmission time)
Precision <2m if="" high="" density<10m if low density (zone detection) ~5m when < 15 m from wireless beacon < 0,30,cm and 3D position < 0,30 cm and 3D position
Size of module (2) 56 mm x 37 mm x 4 mm (entire PCB) / 24 mm x 18 mm x 3 mm (rectangle containing transceiver and antenna) 56 mm x 37 mm x 4 mm (entire PCB) / 24 mm x 18 mm x 3 mm (rectangle containing transceiver and antenna) 23 mm x 13 mm x 2.9 mm (UWB module) 23 mm x 13 mm x 2.9 mm (UWB module)

(1) from wake-up to sleep

(2) including antenna

(3) tag as simple beacon

(4) local scan + advertising

(5) TWR = Two Way Ranging

(6) TDOA = Time Difference Of Arrival

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