Question regarding wireless communication in busy environmen

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Theodor
 
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Question regarding wireless communication in busy environmen

Post by Theodor »

Hi,

I have some questions regarding wireless communication in a convention center, last year we tried making a system that worked using Wi-Fi, but it was very unstable due to the high amount of users in the network. This year we want to try doing it again, but we have no idea what would be the best solution.

The system we are trying to create is to have one base module that listens to multiple nodes that send information when a button is pressed, the distance between the nodes and base module is around 10-15 meters. We looked into XBEE but since it's on the 2.4ghz band we are not sure if that would work due to the high traffic. Would using something like this be smarter: https://www.adafruit.com/product/3070? Or is there something else we should be looking at?

Any help is greatly appreciated, we are kind of in the dark on this problem.

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adafruit_support_mike
 
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Re: Question regarding wireless communication in busy enviro

Post by adafruit_support_mike »

The packet radio modules should work. They operate comfortably outside cellular and Wifi frequencies, and the 15m range you mentioned is well within their ability.

How much data do you need to send in an average message? The packet radio modules have a bitrate of about 19kbps, or about 2 kilobytes per second.

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Theodor
 
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Re: Question regarding wireless communication in busy enviro

Post by Theodor »

adafruit_support_mike wrote:The packet radio modules should work. They operate comfortably outside cellular and Wifi frequencies, and the 15m range you mentioned is well within their ability.

How much data do you need to send in an average message? The packet radio modules have a bitrate of about 19kbps, or about 2 kilobytes per second.
The data would be something like 10 characters maximum? Maybe even a little less, that would be small enough for the radio modules right?

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adafruit_support_mike
 
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Re: Question regarding wireless communication in busy enviro

Post by adafruit_support_mike »

Oh yeah.. the packet radios can do that easily.

I’d have to make discouraging noises if you wanted to stream audio or video, but you’d have to spam 10-byte message pretty hard to come near the packet radio’s limits.

In fact, you may be able to slow the data rate down to increase the chance of each message getting through despite the surrounding radio noise.

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