Ya, I don&#x27;t understand how that&#x27;s patented.  It must be a very specific patent.  A few years ago when I first learned of the woes of TCP over lossy links literally the first thought that popped into my head was &quot;why not code N packets into M&gt;N and recover using Gaussian elimination over GF-2&quot;?  Such an idea could have passed for non-obvious maybe 50 years ago but it&#x27;s a pretty basic idea in the 21st century.<p>To be clear, you can trivially apply <i>any</i> technique here: <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Erasure_code" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Erasure_code</a> across packets in a channel.