Questions tagged [lorawan]

For questions about LoRaWAN, a network protocol for low-power long-range applications.

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How LoRaWAN Class C downlinks works?

I am working on implementing a customized LoRa middleware, I am stuck on understanding how switch between classes works in gateway (server) side, for end node it’s clear for example to switch from ...
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Can a LoRaWAN end device know an ID of the gateway to which it's connected?

Supposing I want the application firmware in my LoRaWAN end device to behave differently when it's in a given geolocation and that geolocation can be defined by the local Helium base station or cell (&...
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Heltec WiFi Lora32 - Can i received LoraWAN packets?

I bought this shield and trying to receive LoraWAN packets in my surrounding. ESP32 Heltec Lora Within their SDK there is examples of receiving data for Lora, joining LoraWAN, however i am interested ...
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MQTT TLS by Node-RED

I had a problem when sending request using MQTT through Node-RED. I actually have a LorAWAN gateway that is connected to TTN Cloud and Node-red was deployed in the gateway as an additional application....
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How do I implement my own custom version of the Adaptative Data Rate (ADR) algorithm?

I'm using this LoRaWAN kit https://www.seeedstudio.com/LoRa-LoRaWAN-Gateway-868MHz-Kit-with-Raspberry-Pi-3.html : a risinghf rxhfM301 with RPI3 and I want to implement a custom ADR algorithm. I'm ...
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How can I use push data (to be sent to end node) to LoRaWAN gateway through a python script?

I'm trying to implement an alternative algorithm to ADR for LoRaWAN communication. I have a rising HF RHFM301 gateway model working with a RPi3 as host and a Seeeduino LoRaWAN as end node. I was ...
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Where can I find the firmware for RHF2S001 gateway?

I'm using this LoRa LoRaWAN Gateway - 868MHz Kit with Raspberry Pi 3 to set up a simple IoT LoRaWAN network. https://www.seeedstudio.com/LoRa-LoRaWAN-Gateway-868MHz-Kit-with-Raspberry-Pi-3.html I have ...
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LoRaWAN: What is a safe distance between two end devices using the same spreading factor that makes sure they don't interfere with one another?

I'm working on an algorithm with the help of a simulator that changes how end devices are distributed such that interference between end devices using the same spreading factor is minimized. I'm still ...
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2 votes
2 answers
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Application Server - ThingPark - End to end security

From the LoRa Alliance specification, we know that the LoRaWAN Application Server handles the decryption (uplink) and the encryption (downlink) thanks to the AppSkey. The first thing which is not ...
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517 views

LoRaWAN device not receiving Join Accept

I have provisioned my LoRaWAN class A device using OTAA on the ThingPark Community platform. Now, it doesn't seem to receive a Join Accept message from the network as answer to the Join Request that ...
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LoRaWAN device leaving a network and then coming back... what Join behavior to expect?

For smart-city or industrial campus type of projects, there are devices that leave the network for e.g. 2 days (worker leaving on a week-end), and then come back... but they might remain disconnected ...
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LoRaWAN backhaul overheads over satellite or cellular

LoRaWAN is optimized for the constrained LoRa physical layer, however the gateways add their own overheads when relaying LoRaWAN frames to/from the network servers, and there is also trafic related to ...
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What are the datarate and ADR best practices for moving objects

For static objects, LoRaWAN has a very neat 'Adaptive Datarate (ADR)' feature that is key to the scalability of the protocol, it allows the network server to select the fastest uplink datarate ...
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The impact of LoRaWAN repeated transmissions

The LoRaWAN spec defines the LinkADRReq MAC command with a field (NbTrans) specifying the number of requested repeated transmissions of every frame. Actility claims that their ADRv3 algorythm uses ...
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Location Solver with LoRaWAN trackers

We use Abeeway Compact Trackers connected via a ThingPark powered LoRaWAN network to track pallets. Our Application Server receives and decodes messages and stores the location coordinates in a DB so ...
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LoRaWAN end-to-end security with Over The Air Activation

We are planning to connect several thousands of door opening and other home security sensors to a public LoRaWAN network country-wide, but our concern is, that in theory our public LoRaWAN network ...
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Firmware update over a LoRaWAN network

We are planning to connect several thousands of LoRaWAN connected water meters. The expected battery life time is 8+ years. Our concern is that meter suppliers are releasing new firmware version ...
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LoRaWAN roaming for overlapping networks

Why shall we consider having a LoRaWAN roaming agreement with another LoRaWAN network operator that has partly overlapping network coverage with our network? Our end devices are fixed (e.g.: water ...
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(Re)Joining existing Lora-wan end-devices to another network server

We are moving our Lora-wan gateways and end-device from Loriot to another opensource network server. But we are experiencing problems with some of our devices, when trying to rejoin using OTAA. What ...
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Sending LoRa packets using LoRaWAN sensor device

I would like to measure temperatures using a LoRa device and establish a point-to-point connection with another LoRa compatible device. However, the only appropriate temperature sensors use LoRaWAN, ...
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LoRa point-to-point communication

I would like to create a point-to-point connection between a LoRa temperature sensor and a M5 Stack (ESP32) with LoRa module. However, I am a beginner with LoRa, so I have a few questions: Are all ...
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LoRaWAN collision and demodulation

In what scenario is it possible that collision happens between two packets. And if a collision happens, is it possible to demodulate? How? Regarding here it says there are two types of interference. ...
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How to Control electric motor with Lora and microcontroller

The idea is to control a water pump that uses an induction motor. By control I simply mean to turn on and off the motor of the water pump. The setup includes a Lora gateway that transmits the desired ...
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2 votes
1 answer
177 views

Using LoRa as a www link

I am new to IoT and LoRa, and still trying to grasp the scope and capabilities after discovering a whole technology I never knew existed. I have read some about LoRaWan and IoT, but am confused about ...
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How to increase the Lora range using a LoStik?

I know this is a common question but I am wondering how to increase range on my Lora 'LoStik' device. https://www.crowdsupply.com/ronoth/lostik I am trying to send data from one LoStik to another. ...
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1 answer
287 views

LoPy4 Gateway (LoRa RAW) connection to Raspberry Pi and AWS Cloud

I am attempting the following setup: Sensor--> I2C--> Pycom LoPy4(Node)-->LoRa-RAW-->Pycom LoPy4(Nano Gateway)-->RPi-->AWS I have established the LoRa RAW connection between the two LoPy4s, now I ...
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Signal Processing in LoRa

I was working with LoRa interfacing with microcontrollers and realized that I'd require encryption of data in my design. Can someone tell me if I would require signal processing for this purpose?
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2 answers
303 views

Water meter reading using LORA

We need to get reading of meter using LORA. Previously, we have used NodeMCU with Wifi module but it contains short range. We need long range which will be around 10 km to 20 km, So we must need to ...
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2 votes
3 answers
660 views

Receiving acknowledgement in LoRaWAN without affecting data transmission

Consider a LoRaWAN in which multiple nodes are attached to gateway. The page at link-labs states that, once a message has been delivered, there is no acknowledgement of receipt. However, nodes in ...
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4 votes
1 answer
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Can I send messages from LORIOT to an HTTP web server?

I actually send data packet from LORIOT and TTN to Cayenne. I would understand if is possible to send instead data from Loriot or TTN to my custom http web server, if there is any procedure around ...
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7 votes
4 answers
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Is it a good option to send images over LoRa network?

LoRa (Long Range) technology is one of the promising technology which offers long range communication with low power consumption. Therefore when building a device that can be deployed in a no ...
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3 votes
1 answer
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The Things Network AWS IoT integration

I have followed the tutorial for the AWS integration but cannot get the MQTT messages to display in the AWS IoT Core. I assume bridging is not working since I can get the messages in an external ...
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4 votes
1 answer
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How does endianness work in LoRaWAN1.1?

On Page 9 in the LoRaWAN 1.1. specification it says: The over-the-air octet order for all multi-octet fields is little endian. EUI are 8 bytes multi-octet fields and are transmitted as little endian. ...
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5 votes
1 answer
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The Things Network - Pricing

I am planning to use The Things Network for my next project with around 50 LoRa nodes geographically distributed in an area. I am wondering is LoRaWAN free to use - provided we buy LoRaWAN gateway ...
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6 votes
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Why does LoRaWAN 1.1 use MAC-then-encrypt for Join-Accept messages?

In the LoRaWAN 1.1. standard it says on Page 16 "For Join-Accept frame, the MIC field is encrypted with the payload and is not a separate field". In other scenarios the message integrity code is a ...
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1 vote
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Can there be a correlation between Emonlib current increase and RTC unsync on MKR 1300?

I'm having this weird issue where my data Send interval gets screwed up when the monitored current goes above 27A. Basically, it keeps adding several seconds to my interval, here's an example: ...
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4 votes
1 answer
102 views

LoRaWAN remote sensor node platform

Which platform can you recommend for a LoRa/LoRaWAN remote sensor node, which fulfills the following criteria? Detects presence of people in 15-minute interval (e.g. with a RCWL-0516) Reports the ...
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3 votes
2 answers
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How to send data collected by two different sensors simultaneously?

I have two different sensors connected to my Raspberry pi and I have to send the data to other device. The transmission of data is through wireless network. I have been asked to send the data in ...
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3 votes
2 answers
97 views

LPWAN technology for remote environmental monitoring

What would be the most appropriate LPWAN technologies for environmental monitoring in a remote area, given the following: The monitoring system would be made up of 3 to 10 nodes located within a ...
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4 votes
2 answers
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Using Raspberry Pi as a Lora Node for a TTN setup

I already have a LoRa gateway that I made using a NodeMcu with ESP8266 and now I want to send data from a Raspberry Pi 3 through that gateway to the TTN. The first thing that I did was to connect ...
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4 votes
1 answer
108 views

Microchip RN2903: TX/RX distance with internal antenna

My question is about the maximum transmission distance achieved with the Microchip SoC RN2903, only using its internal antenna. I've been doing field tests in urban environments, with this module and ...
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1 answer
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How does LoRa based geolocation work? How does it measure distance?

The speaker in the video Richard Lansdowne - LoRa Geolocation mentions straight-off that he won't be quoting an accuracy for geolocation using LoRa, and it's of course not the ideal signal you would ...
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7 votes
1 answer
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Lorawan packets datasets

I'm studying Lorawan protocol. I would like to know if some datasets exist to study LoRaWAN packets, parameters and some features.
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3 votes
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How will the Proxima I and II satellites use or test LoRa in space?

IoT Aukland Tweet references FleetSpace and launch of the Proxima I and II satellites. This put's the "W" in LoRaWan in a different perspective. How will these test LoRa in space? Is there any ...
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1 vote
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Connect sx1272 module to a Dragino Gateway

I am new to Lora technology. I am using a sx1272 Lora Module and I am trying to send and receive data to a Dragino Gateway. The problem is the sx1272 and Dragino use two different libraries and hence ...
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12 votes
2 answers
775 views

Spreading Factor of LoRa

I am new to LoRa technology and I was reading it's technical specifications on the lora-alliance.org website. In the document, the SF is always considered between 7-12. What is the reason behind not ...
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Arduino LMIC: Figuring out when packet transmission has been started on Chip

I use the following example of an ABP-activated LoRaWaN node: https://github.com/matthijskooijman/arduino-lmic/blob/master/examples/ttn-otaa/ttn-otaa.ino But for some reason I cannot figure out when ...
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2 votes
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460 views

Semtech Lora Packet forwarder with Dragino Shield: How to configure the pins on packer forwarder?

As far I have seen that these links: USE LORA SHIELD AND RPI TO BUILD A LORAWAN GATEWAY LoRaWAN But they use an obsolete packer forwarder: https://github.com/tftelkamp/single_chan_pkt_fwd as a ...
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8 votes
1 answer
12k views

What is the maximum Packet Size of a LoraWan including the phy headers

I created a LoRa to USB pass-through via Arduino in order to use it as a temporary gateway for development purposes. So somehow I need to know how big a LoRa packet including PHY headers is, in order ...
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4 votes
1 answer
425 views

Why does IBM's arduino-lmic example for abp activation have only 2 keys?

As far as I know the LoraWan v1.1 Spec uses the following keys: FNwkSIntKey: In order secure the message integrity on the data that a node sends to the server. SNwkSIntKey: In order to secure the ...
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