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LoRa Range Testing in San Francisco

blog.beepnetworks.com

51–60 of 65 posts

Re: LoRa Range Testing in San Francisco

#51
post #48
post #46

Earlier quoted context omitted.

It's a great point. A smart network needs to scale down the transmit power of its nodes and gateways as the network density increases.

Hummm actually is more about the distance (in the radio topology) between the nodes and the gateway. Closer are the gateway to the nodes less power you need.

Yes, so if you have a uniform distribution of nodes and gateways over space, a node's nearest gateway gets closer as network density increases.

Re: LoRa Range Testing in San Francisco

#55
post #44
post #42

Is it still the case that LoRa is a single vendor proprietary technology? When I looked into it a bit it seemed like only Semtech produced LoRa chips and that it wasn't an open standard like 802.11, so it is unlikely that we will see offers from other vendors.

I believe Microchip licensed the IP from Semtech and has made their own chips: http://www.microchip.com/design-centers/wireless-connectivit...

Thanks for the link. I hope Semtech makes it completely open in the near future. I think that is the #1 thing holding LoRa back from being a massive success.

Re: LoRa Range Testing in San Francisco

#56
post #51
post #48

Earlier quoted context omitted.

Hummm actually is more about the distance (in the radio topology) between the nodes and the gateway. Closer are the gateway to the nodes less power you need.

Yes, so if you have a uniform distribution of nodes and gateways over space, a node's nearest gateway gets closer as network density increases.

Definitely, but the philosophy that I usually see is that once your gateway cover an area you may want to add a second one (to cover in case of failure) but no more.

So the distribution is not uniform... On the other way, once an area is covered, more and more nodes are added.

Re: LoRa Range Testing in San Francisco

#57
post #33
post #23

It does not look like your target market, but I imagine this would be ideal for pet/valuable tracking. Put it in a collar or bike seat and if your fido goes for a stroll and does not come back you can search much faster with an easy drive down the road. Same thing to help find a stolen bike. If the transmitter could be inductively charged in a dog crate or where I park my bike -- it would be very convenient too. Ping…

Seems like the police could bait bikes with this technology to make a serious dent on bike theft in their city.

They could already do that with APRS if they wanted to.

Re: LoRa Range Testing in San Francisco

#58
post #33

Earlier quoted context omitted.

Seems like the police could bait bikes with this technology to make a serious dent on bike theft in their city.

You'd have to hide the antenna well to do this.

Inside the frame would still work just fine if you used the frame as the antenna and if they want to get it out they have to destroy the bike so they're out a any money they were intending to make anyway.

Re: LoRa Range Testing in San Francisco

#59
post #23

It does not look like your target market, but I imagine this would be ideal for pet/valuable tracking. Put it in a collar or bike seat and if your fido goes for a stroll and does not come back you can search much faster with an easy drive down the road. Same thing to help find a stolen bike. If the transmitter could be inductively charged in a dog crate or where I park my bike -- it would be very convenient too. Ping…

FWIW this already exists, just over cellular networks instead. Works well enough for the pet use case though: http://www.whistle.com/ is one, I think there are a couple others also.

Re: LoRa Range Testing in San Francisco

#60
post #28
post #25

Earlier quoted context omitted.

Shawn from Beep here. These use-cases sound really interesting. Send me an email? shawn at beepnetworks dot com

Hey what are your thoughts on sigfox? They got an investment from Samsung who are apparently integrating into their devices. Will this play out like vhs vs betamax?

the overall verdict from Lora alliance members on Sigfox is that they are big on words but small on revenue or customers. add grain of salt
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