Comments (7)
- Center frequency
- I think so yes cc @tftelkamp
from gateway-conf.
what is the difference between chan_multiSF_xxx and chan_Lora_std?
The chan_multiSF_xxx
configures a 125kHz channel that demodulates all LoRa spreading factors. The chan_Lora_std
usually configures a 250kHz channel that demodulates a fixed LoRa spreading factor. Then the chan_FSK
configures a channel that demodulates FSK. A "full" config file configures 8 multiSF LoRa channels, one std LoRa channel and one FSK channel.
from gateway-conf.
Maybe @tftelkamp already has something in mind, but otherwise please make a proposal. The minimal channels are 433.175 433.375 433.575, then we'd have to come up with the extra 5 channels.
from gateway-conf.
Maybe these pieces of code (band_eu433.go, RegionEU433.c, RegionEU433.h) can provide some reference material, for example this function has the minimum and maximum frequencies:
static bool VerifyTxFreq( uint32_t freq )
{
// Check radio driver support
if( Radio.CheckRfFrequency( freq ) == false )
{
return false;
}
if( ( freq < 433175000 ) || ( freq > 434665000 ) )
{
return false;
}
return true;
}
This manual about setting up a 433MHz gateway has a configuration sample and as long as I can decipher it they offer to use these frequencies: 434.1, 434.3, 434.5, 434.7, 433.3, 433.5, 433.7, 433.9 at 125kHz (chan_multiSF_xxx), and 434.2 at 250kHz (chan_Lora_std) which is strange because they overlap and also the required 433.175 433.375 433.575 channels are missing.
By the way, what is the difference between chan_multiSF_xxx and chan_Lora_std?
Added later:
LoRaWAN Specification, section 7.4 EU 433MHz ISM Band.
from gateway-conf.
I couldn't find any official documentation about the additional channels for EU433, so I'm trying to allocate the frequencies by myself. I have two questions though:
-
When we define a channel, for example 433.175 with 125kHz bandwidth, is it the "left" frequency or the "central frequency"? In other words, does it mean the channel will occupy the 433.175-433.300 frequencies, or the 433.1125-433.2375 frequencies?
-
We can see in EU-global_conf.json that both chan_Lora_std (250kHz) and chan_multiSF_1 (125kHz) are using the same 868.3MHz channel, how is it possible? Is it because they are using different spreading factors so they can use the same frequencies?
Thank you.
from gateway-conf.
TODO:
- Inventorise the 433MHz ISM/license free/SDR bands across the world.
- Using the proposed EU433 channels, try and find as many overlapping channels as possible.
Because 433MHz is quite a standard ISM band internationally, this is the ideal band to try and find at least one standard channel that will work everywhere. If a device joins on that channel(s), they are guaranteed to be heard as long as there is a 433MHz gateway in range.
from gateway-conf.
https://net868.ru/assets/pdf/LoRaWAN-Regional-Parameters-v1.1rA.PDF
from gateway-conf.
Related Issues (15)
- "serv_port_down" HOT 1
- Add AS923 Configurations
- Add LBT support to config files HOT 1
- India bandplan doesn't work on Conduit for ul ch#0/1 HOT 6
- Provide template like config for use with poly forwarder HOT 4
- CN470-510 configuration HOT 23
- "Invalid configuration Std Channel" on AU915-928 HOT 9
- Sanity check the Radio freq and channel IFs for all conf files
- KR-global_conf.json HOT 6
- lbt_cfg prevents some gateways from operating HOT 3
- Document frequency-plans.yml and v3 indexing HOT 1
- Add a mapping from country to correct frequency plan. HOT 2
- Add KR-global_conf.json HOT 9
- Add min/max frequency to EU868 HOT 2
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.
from gateway-conf.