How to experiment with LoRa PHY layer parameters?

Application Development
1

Hey everyone, I am trying to test the effects of physical layer parameters on its packet reception performance. I am using The Things Uno board as end node and The Things Indoor Gateway.
I want a general right direction on how to proceed with it, in terms of libraries to use if I want to code in Arduino IDE.
Thanks in advance.

2

As different code bases have different levels of access to such things, which ones were you thinking of changing in particular?

3

Hey, thanks for your response.
I want to experiment with spreading factor (SF), coding rate and bandwidth in LoS and nLoS conditions. I have so far figured how to alter the SF using TheThingsNetwork library but I doubt it if I can access bandwidth and coding rate using the same library.

4

Eh?

You want to re-configure the LoRa physical layer parameters of the Gateway, to see how it affects its packet reception ?

Sounds more like you ought to be doing this on a LoRa point to point setup, not good to experiment with Gateways.

5

Bad idea to change Gateway settings like that, dont.

6

no, not with the gateway, i want to configure the parameters at end nodes.

7

I can help you with the results - you will experience 100% packet loss if you change these as the gateway will not be able to hear you.

As @LoRaTracker says, this would really need P2P which isn’t something we discuss / support on this TTI funded forum for TTN

8

Plenty of libraries out there that support point to point LoRa setups.

You did say in the first post that you were using a Gateway, and you cannot, for this type of testing.

9

okay, I had no idea that the gateway will not support this kind of testing.
Thank you for your response. I appreciate it

10

Got it. Thank you

11

The TTN fair use policy limits the Gateway to sending 10 packets a day to the nodes, which would make meaningful testing kind of difficult anyway.

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12

Also GW’s on TTN are required to follow the pre-defined frequency plans, channel bandwidth settings and FEC parameters,etc. for correct operation and if not to be disruptive to other users - do not attempt on TTN, thank you!.

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