RETRACTED: Agricultural Internet of Things Application in the Construction of Regional Smart Cities

Table 3

Comparison of wireless communication technologies.

Category	Zigbee	Wi-Fi	4 G
Frequency band	2.4 GHz	2.4 GHz	0.9 GHz
Speed	<200 kbps	>10 Mbps	<6 Mbps
Distance	300 m	70 m
Antijamming	Good	Poor	Good