OpenThread
Distributing big data in thread mesh networks? #8470
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Our company is just evaluating the usability of thread concerning sending big amounts of data over a thread mesh. Big meaning OTA updates for embedded devices that range from ~2MB to maybe 6MB. Can this be done easily via thread? Also our goal is to distribute JSON data from cloud to end device via mesh. I see that thread supports TCP which would be a must in our case. Is thread the right pick for this use case? |
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Replies: 2 comments 1 reply
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The latest Thread 1.3 Specification does have provisions for bulk transfer, including TCP and delay-aware queueing. Note, however, that Thread was designed for low data-rate applications. If transfer latency is not a concern, then Thread may be a good fit for your application. |
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Thanks! Well the updates are not necessarily time constrained like a video stream for example. But how fast would the distribution of say a 2MB file be as a ballpark figure? Is there some data on transfer latency vs. chunk size? |
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@samkumar's NSDI'20 paper has data showing goodput of 75 kb/s over single hop and 20 kb/s over multiple hops. Take a look at the paper for more details. |
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The latest Thread 1.3 Specification does have provisions for bulk transfer, including TCP and delay-aware queueing. Note, however, that Thread was designed for low data-rate applications. If transfer latency is not a concern, then Thread may be a good fit for your application.