A COMPARISON OF WIRELESS COMMUNICATIONS PROTOCOLS
Parameter	Wi-Fi (IEEE 802.11)	Bluetooth (IEEE 802.15.1)	ZigBee(IEEE 802.15.4)
Range	About 100 m	About 10 to 100 m	About 10 m
Bandwidth/throughput	868 MHz/20 kbits/s 915 MHz/40 kbits/s 2.4 GHz/250 kbits/s	2.4 GHz/1 Mbit/s	868 MHz/20 kbits/s 915 MHz/40 kbits/s 2.4 GHz/250 kbits/s
Power consumption	400 mA (TX on) 20 mA (standby)	40 mA (TX on) 0.2 mA (standby)	30 mA (TX on) 1 mA (standby)
Protocol stack size	100 kbytes	100 kbytes	32 kbytes
Battery life	Minutes-hours	Hours-days	Days-years
Relative node physical size	Large	Medium	Small
Relative cost/complexity	High	Moderate	Low