LoRaWAN Real Life Issues
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1. The document discusses various practical considerations for implementing a LoRaWAN network including choosing antennas, cables, frequencies and LoRa modules based on factors like SWR and internal circuitry. 2. It also provides information on developing LoRaWAN nodes using libraries like LMIC and decoding LoRaWAN packets by analyzing the PHYPayload, FHDR, FPort and other fields. 3. Recommendations are given on starting a LoRaWAN learning journey including suggested hardware, software and costs starting at around $200.
![Assuming base64-encoded packet
QNIfASaABAABA/uB+N3FPLnND5ufMW6z
Message Type = Data
PHYPayload = 40D21F01268004000103FB81F8DDC53CB9CD0F9B9F316EB3
( PHYPayload = MHDR[1] | MACPayload[..] | MIC[4] )
MHDR = 40
MACPayload = D21F01268004000103FB81F8DDC53CB9CD0F9B
MIC = 9F316EB3
( MACPayload = FHDR | FPort | FRMPayload )
FHDR = D21F0126800400
FPort = 01
FRMPayload = 03FB81F8DDC53CB9CD0F9B
( FHDR = DevAddr[4] | FCtrl[1] | FCnt[2] | FOpts[0..15] )
DevAddr = 26011FD2 (Big Endian)
FCtrl = 80
FCnt = 0004 (Big Endian)
FOpts =
Message Type = Unconfirmed Data Up
Direction = up
FCnt = 4
FCtrl.ACK = false
FCtrl.ADR = true
How to decode LoRaWAN packet?](https://image.slidesharecdn.com/lorawanreallifeissues-190417164755/85/LoRaWAN-Real-Life-Issues-15-320.jpg)
LoRaWAN Real Life Issues
- 2. Typical LoRaWAN Based Network ANTENN A CABLE LoRaWA N Node LoRaWA N Gateway LoRaWA N Server Cloud LoRaWA N Server
- 3. `Which Antenna? And WHY???
- 4. SWR? What the heck? SWR READIN G % OF LOSS ERP* WATTS AVAILAB LE 1.0:1 0.0% 100.0% 4.00 1.1:1 0.2% 99.8% 3.99 1.2:1 0.8% 99.2% 3.97 1.3:1 1.7% 98.3% 3.93 1.4:1 2.8% 97.2% 3.89 1.5:1 4.0% 96.0% 3.84 1.6:1 5.3% 94.7% 3.79 1.7:1 6.7% 93.3% 3.73 1.8:1 8.2% 91.8% 3.67 2.0:1 11.1% 88.9% 3.56 2.2:1 14.1% 85.9% 3.44 2.4:1 17.0% 83.0% 3.32 2.6:1 19.8% 80.2% 3.21 3.0:1 25.0% 75.0% 3.00 4.0:1 36.0% 64.0% 2.56 5.0:1 44.4% 55.6% 2.22 6.0:1 51.0% 49.0% 1.96 7.0:1 56.3% 43.8% 1.75 8.0:1 60.5% 39.5% 1.58 9.0:1 64.0% 36.0% 1.44 10.0:1 66.9% 33.1% 1.32
- 6. OUT DUT Antenna IN NWT4000-1 Network Analyzer RF OUT RF IN SWR Bridge OUT DUT Antenna IN Noise Generator RF OUT RF IN SWR Bridge RTL Software Defined Radio OUT DUT Antenna IN Noise Generator RF OUT RF IN SWR Bridge RTL Software Defined Radio SWR measurement?
- 7. Which Cable and Why?
- 8. Which Frequency and Why?
- 9. Which Frequency and Why? 866 MHz 433 MHz
- 10. Which LoRa Modules(How to Choose)? RFM95W DRF1272 F LORA1276- C1 DRF1276G Lora1276F30 RFM95PW
- 11. Which LoRa Modules(How to Choose)? Murata RisingHF Microchip Rakwireless Internal Circuit Murata Module
- 12. Which LoRa Development Board?
- 13. Is LoRaWAN node dead/alive? Spectrum Analysis
- 14. SN Phase Repository Type of software Remark 1 Gateway https://github.com/Lora-net/lora_gateway Open source 2 Gateway https://github.com/Lora-net/packet_forwarder Open source 3 LoRa Node(Semtech) https://github.com/Lora-net/LoRaMac-node Open source 4 Arduino Node LMIC https://github.com/matthijskooijman/arduino- lmic Open source 5 WiringPi git://git.drogon.net/wiringPi 6 Raspberry Pi Node LMIC https://github.com/ernstdevreede/lmic_pi Open source 7 I-CUBE-LRWAN(STM) https://www.st.com/en/embedded-software/i- cube-lrwan.html 8 Physical Message to Frame Message decoding https://LoRaWAN-packet-decoder- 0ta6puiniaut.runkit.sh 9 LoRaWAN packet decryption https://github.com/jieter/python-lora Open source 10 ASCII to BASE64 https://www.branah.com/ascii-converter 11 Signal Sniffing over Air https://github.com/rpp0/gr-lora/wiki/Capturing- LoRa-signals-using-an-RTL-SDR-device Open source 12 Signal Sniffing over Air https://revspace.nl/DecodingLora Open source Which LoRaWAN Library to start with?
- 15. Assuming base64-encoded packet QNIfASaABAABA/uB+N3FPLnND5ufMW6z Message Type = Data PHYPayload = 40D21F01268004000103FB81F8DDC53CB9CD0F9B9F316EB3 ( PHYPayload = MHDR[1] | MACPayload[..] | MIC[4] ) MHDR = 40 MACPayload = D21F01268004000103FB81F8DDC53CB9CD0F9B MIC = 9F316EB3 ( MACPayload = FHDR | FPort | FRMPayload ) FHDR = D21F0126800400 FPort = 01 FRMPayload = 03FB81F8DDC53CB9CD0F9B ( FHDR = DevAddr[4] | FCtrl[1] | FCnt[2] | FOpts[0..15] ) DevAddr = 26011FD2 (Big Endian) FCtrl = 80 FCnt = 0004 (Big Endian) FOpts = Message Type = Unconfirmed Data Up Direction = up FCnt = 4 FCtrl.ACK = false FCtrl.ADR = true How to decode LoRaWAN packet?
- 16. How to decode LoRaWAN packet?
- 17. The data received is In hex =68, 65, 6C, 6F, 20, 77, 6F, 72, 6C, 64 In decimal=104, 101,108,111,32,119,114,108,100 In ascii=h,e,l,l,o, ,w,o,r,l,d How to decode LoRaWAN packet?
- 18. 1. Get a development board Arduino Uno/STM Nucleo Board/Raspberry Pi(Lowest Cost Rs 500/-) 2. Get an SPI based Lora module (SX1276 or RFM95W) pair (Lowest Cost Rs 1500/- ) 3. Breakout Board, Antenna , (Connector Lowest Cost Rs 250/-) ------------------------------------------------------------------------------------------------------------ Total Cost Rs 1750/- How can I start my LoRaWAN journey/leraning?
- 19. LoRaWAN CLASSES
- 20. LoRaWAN SPEED
- 22. LoRaWAN Range Check A LORAWAN network was simulated in Canara Engineering , Mangalore •SX1301 Based Gateway(100 mW) •SX1276 Based Node(500 mW) •Arduino Environment for Node •Raspberry Pi 3 Environment for Gateway •Frequency Range(865-867 MHz) •Modified Semtech Packet Forwarder for Gateway •TTN(The Things Network Server) •Modified LMIC (LoraMAC-in-C) library •SF 12, Data Rate 250 Kbps