What is the maximum datarate of LoRaWAN gateway ( transferring data from node to server)?

[Yuvi]

Hello community.

What is the maximum datarate of LoRaWAN gateway?

Example: If I'm sending 180,000 bytes from node to gateway, gateway will be able to transfer from node to server.?

Thank you.

[AScha.3]

here you can calculate data rate - depending of modulation etc.

https://www.semtech.com/design-support/lora-calculator

 

[Yuvi]

Thank you for replying @AScha.3 

This calculator link does not provide the option of this gateway board (LRWAN_GS_HF1).

This (LRWAN_GS_HF1) is SX1301/SX1257 device and calculator provide option for devices SX127X, SX1261,SX1262,SX1280 and LR1110.

[Tinnagit]

LoRaWan has a standard Protocol but there are some regulation like as package size - payload and period time between each their communication which they are depend on operator. So you have to ask them about this.

[Yuvi]

Thank you reply @Tinnagit .

I'm transferring 6 byte of data with each frame and able to tranfer 40 frames per minute.

I also need to increase these frames per minute to atleast 30000 frames per minute, that is 180000 bytes per minute as I'm using B-L072Z LRWAN1 which is a SX1276 device and has the capability to transfer that much of data that I need 3kbps.

[Tinnagit]

it's about 500 Frame per sec. it's very high frequency, I think that it's too high.
If that's gateway serve for this device only that I think that it has no any problem but if it's not, it's possible that there is no air time for another device.
So if you use gateway from Lora Provider, you should contract them about this.

And 180KB per minutes is about 24Kbps which you may have set it to SF7 spreading factor  with 500K B/W.
Bit rate are going to 22Kbps but it's going to waste if your gateway is not support this bandwidth.

[Tesla DeLorean]

Isn't this entirely the wrong protocol for this volume of data?

Can you use LoRaP2P?

[Yuvi]

Yes sure I'll buy you a coffee @Tesla DeLorean 

Can you help with this setup were I want to tranfer around 20000  to 30000 dataset per minute, with each dataset of 6 byte.

Meanwhile I'll look for LoraP2P.

Looking for your help .

Thank you.

[Tesla DeLorean]

Their are a myriad of possible settings https://forum.rakwireless.com/t/lora-p2p-implementation-cross-talk-and-security/7988/7

Semtech has a calculator. Small packets are going to have a lot of overhead. FCC rules probably limit continuous usage, and you'll also jam the channel. Not clear if you have one or multiple devices that need to achieve this, and over what distance.

[Yuvi]

Thank you for all this information @Tinnagit 

But gateway in Indian region does not support FSK.

 

[Yuvi]

Hello @Tinnagit @Tesla DeLorean @AScha.3 

Is it legal to use other country frequencies? Ex: If I'm using European frequencies in India?

As this link says European frequencies are available in India. 

https://www.ensembletech.in/lora-frequency-bands-india/ 

 

[AScha.3]

>Is it legal to use other country frequencies?

no.

except they are also in the frequency plan of the country , where it is to be used.

look at the frequency plan of your  country !

or...

use the frequencies around 122 or 330 MHz, there is the ILS guiding and landing system for civil aircraft --

and you will meet new friends very soon !!!   :) :)

[Yuvi]

Thank you @AScha.3  for this information.

I want to implement FSK for a better data rate and if I connect my gateway to European frequencies I can use FSK. That's why asked.

The below paragraph is from this link.(https://www.ensembletech.in/lora-frequency-bands-india/).

However, there is a silver lining with the 868 MHz LoRa band. As with all frequency bands there are 8 channels in the 868 MHz LoRa band. These eight channels are spread over frequencies starting at 865.20 MHz and ending at 868 MHz. So in reality a major portion of the 868 MHz LoRa frequency channels are in the license free 865 MHz – 867 MHz band in India. Seven out of the eight channels are in the license free band in India.

[Yuvi]

@Tinnagit  my country provides frequency between 865-867 MHZ. But as I want to use FSK can I use European frequency is it legal?

I have given the paragraph and link says that I can use.

[Tinnagit]

the Modulation technique is not about frequency so I don't think Lora in Europe will support FSK and also in my region.

 

[Yuvi]

@Tinnagit 

When we set gateway according to the region and display it using terminal(Tera Term) we can we for India terminal show FSK : OFF.

And if we set gateway to European region then gateway show FSK : 50 kbps. ( terminal photo for europe )

[Tinnagit]

Is this your own gateway?
As I had told that sx127X is support FSK and most gateway have this feature also my region but the FSK Modulation is not LoraWan so this feature was disabled usually.

But if it's your own and you can config your gateway so you can enable this feature.

[Yuvi]

@Tinnagit 

On this basis I'm able to say that europe support FSK and not India.

[Yuvi]

Hello @Tinnagit  @AScha.3  @Tesla DeLorean 

As gateway terminal image shows FSK at channel 9 and 868 frequency.

As I downloaded the library code the default set region is Europe and frequency is 868. 

And I have made these changes #define USE_MODEM_LORA 1
#define USE_MODEM_FSK 0
to
#define USE_MODEM_LORA 0
#define USE_MODEM_FSK 1

However, the gateway and node are not getting connected.

Thank you.

[Tinnagit]

you have to config Bandwidth Baud rate and Channel to match with your gateway too.