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2

LoRaWAN is one of the best technologies for collecting data from water meters. This is because LoRaWAN networks operate in sub gigaherz bands and apply low (~14dBm) TX power. This enables long (even 8-10 years) battery life if the meters report their counter only one or 2 times a day. However, bridging 10-20km distance for water meters is not realistic at ...


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What is the impact of repeated transmissions on the capacity of the LoRaWAN Network? Intuitively, it would seem that repeat transmissions just load the network... and this is what will happen with a basic network server. However it is more subtle, because a high-end network server will optimize jointly power, channel diversity (repeat) and datarate. What you ...


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Funny how I had never seen that setting, I always though retransmits only occurred for confirmed packets. That's similar to the Sigfox strategy. Note how the wording is different between e.g. 1.0.3 and 1.1.0, though. Multiple shorter transmissions have several advantages: Each transmission occurs on a different channel If there's a downlink, retransmissions ...


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Actually even in OTA (using Join) the LoRaWAN spec separates the network session key (used by the network server to verify checksums and potentially de-ambiguate colliding short DevAddr addresses into their unique devEUIs), and the payload encrypting session key (AppSKey). It is one of its key innovations compared to other MAC layers like 802.15.4. The trick ...


4

Yes, firmware updates are a big issue with LPWAN networks, because they do not have the downlink capacity to do device-per-device full firmware updates as you can do using e.g.: Bluetooth or WiFi. However, there is a good solution for that leveraging the fact that (1) often new Fw updates are only patches and (2) many devices require the same update. The ...


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If you use only GPS geolocation or a local BLE location solver, then a cloud service is not required. However if you want to benefit from assisted-GPS, or WiFi geolocation, then the ThingPark Location Engine (cloud based) is required. The main benefit of Assisted-GPS is that the GPS chip will not need to wait to have acquired the full satellite information (...


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LoRaWAN has a feature called "macro-diversity", which allows more than one GW to demodulate the same uplink frame (UL). Multiple gateways receiving the same UL increases network resiliency and performance (in the face of changing/challenging RF conditions). Thanks to the LoRaWAN Passive Roaming feature, set of multiple GWs demodulating the UL can ...


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There's an alternative, but it depends a lot on what the other "LoRa compatible device is". If it has gateway functionalities (ability to listen on multiple channels and data rates and matching software, usually means SX13xx-based) and you can freely program it, then it may be possible to have the LNS directly embedded in the gateway. In that case ...


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Should be possible if you have access to the firmware itself! There are many open source projects e.g. with RFM69 moduls from hoperf, which are usefull to create your own propriatary communication between two clients. But as hardllib mentioned, you give less information about the detailed setup and accesabilities you have. If you don't have access to the ...


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