IOT Gateway Design

 

Top layer - Pushing data to the internet

• 4G LTE Modules 20Mbps
• GPRS 56–114 kbps
• TCP -Ethernet
• Wifi Fiber

Midlayer - Gathering data

• Zigbee 250kbps 100m
• Lora 10-20km 168kbps
• BLE 0.5Mbps 100m
• BLUETOOTH 1.5Mbps  10m
•  WIFI  2.4 GHz 54 Mbps 100m

Low layer -  sensor networks wireless 

• BLE - mesh
• LORA -mesh
• WIFI - mesh
• RF - tree
• BLUETOOTH

Low layer - sensor networks wired

• CAN-BUS 1mbps (10 kbps is 1 km, 1 Mbps is 40 meters)
• RS485  10 -20Mbps, 1km-9600buad 
• 4-20mA
• DI2C - Differential I2C
• I2C - between PCB cards only (distance less than 1m/ bus capacitance less than 400pF)