6
RA
K20
11
RAK
7248
6
Figure 4 | Interfaces
2.3. SystemStructure
The following figure shows the basic concept for LoRaWAN system. RAK7248 WisGate is the
central hardware solution for all LoRa based radio communication. It receives and transmits radio
messages. The processing of radio messages as well as the protocol related tasks is done by
embedded host system (Raspberry Pi). Received and processed radio messages are being sent
to a LoRaWAN server. The concrete segmentation of the protocol related tasks is outside the
scope of this document.
Figure 5 | WisGate System Structure
2.4. RaspberryPi
Processor:Broadcom BCM2711, quad-core Cortex-A72 (ARM v8) 64-bit SoC @
1.5GHz
Memory:2GB LPDDR4
I/O Port:Gigabit Ethernet;2 × USB 3.0 ports;2 × USB 2.0 ports
Connectivity:2.4 GHz and 5.0 GHz IEEE 802.11b/g/n/ac wirelessLAN, Bluetooth, BLE
