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FCC Authorizes SpaceX to Provide Broadband Satellite Services

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Re: FCC Authorizes SpaceX to Provide Broadband Satellite Services

#71
post #55
post #28

Earlier quoted context omitted.

Not much effect. The Chinese government will prohibit import and possession of the ground terminals. Smugglers will bring in a few but not enough to really bypass the Great Firewall for many people.

>bring in a few Bring in a few from where? Where do you think these devices will be manufactured anyway? ;)

Probably the US.

Re: FCC Authorizes SpaceX to Provide Broadband Satellite Services

#72

Earlier quoted context omitted.

Good luck with those ping times if you're a gamer.

Their satellites will be low-earth orbit and have latencies ~50-70ms supposedly. Current internet satellite systems are much, much higher in orbit and thus have horrendous lag. What remains to be seen is what packet loss will be like with environmental disturbances. That latency is perfectly fine for gaming, but bursts of 20%+ packet loss will quickly flip it back to "sucks for gaming" territory while still being per…

I was just looking at Iridium and they seem to have very low latency of around 40ms roundtrip [0] but very small throughput. If SpaceX (or whoever else) can address the latter, then 40ms will challenge any ISP. If you combine this with the adoption of new protocols like HTTP/2, the user experience will be definitely comparable.

[0] https://en.wikipedia.org/wiki/Satellite_Internet_access#Medi...

Re: FCC Authorizes SpaceX to Provide Broadband Satellite Services

#73
post #58

Earlier quoted context omitted.

I would like to know how this technology will affect the great firewall of China, does anyone have any ideas?

It will not affect it in any way. They have released their plans for Starlink and there will be a "blackout" zone over China, so China doesn't shoot down their satellites. In 2007, China shot down FY-1C as a test of a kinetic kill vehicle (leaving tons of high speed space debris). Unless they receive approval from China to broadcast, they won't over China. Source: http://www.businessinsider.com/spacex-internet-satell…

> shot down FY-1C as a test of a kinetic kill vehicle (leaving tons of high speed space debris)

Do you have more info on this? Or anyone?

That's so crass. It's plain indefensible. I really want to know more.

edit: Thanks for the links.

Re: FCC Authorizes SpaceX to Provide Broadband Satellite Services

#74
post #20

Earlier quoted context omitted.

From one of their early FAQ docs: https://www.reddit.com/r/Starlink/comments/7zqm2c/starlink_f... "What kind of antenna does it use? It will use a flat Phased Array antenna about the size of a pizza box or laptop computer and expected to cost between $100 and $300. You will need line of sight to the open sky, mounted on your roof or anywhere outside. The antenna handles both upload and download and is capable of giga…

Sounds a lot like you could get it installed when you are putting in your solar panels......

Makes me curious, would a larger panel make for better service? Would be interesting if they made their solar roofs all in one.

Re: FCC Authorizes SpaceX to Provide Broadband Satellite Services

#75

Earlier quoted context omitted.

Good luck with those ping times if you're a gamer.

If this turns Comcast into a niche provider for gamers then Comcast is definitely over.

Comcast is no more just a dumb pipe. Thanks to their acquisitions they would, in case of this scenario, simple reinvent themselves as a content producer (which they already are).

Re: FCC Authorizes SpaceX to Provide Broadband Satellite Services

#76
post #15

Earlier quoted context omitted.

As many of us learned from the unauthorized Swarm Technologies satellites the other week, the FCC approve satellite launches. So this is effectively SpaceX getting the final sign-off they need to launch this service - I think that can count as an advance. I think there are a lot of arguments to be made about the world-changing nature of this project but I'm not sure FCC approval is the best one to downplay.

Did you notice the part of the article that talked about this being a conditional approval, not the final one?

99.9% of the time FCC conditional approvals for new tech will eventually convert into final approval. It's just a procedural thing.

Re: FCC Authorizes SpaceX to Provide Broadband Satellite Services

#77
post #70
post #67

Earlier quoted context omitted.

Gogo works over water on their new(ish) 2ku band installations. Two years ago I flew to Hawaii on one of the first Delta flights outfitted and got some pretty good speeds (and oddly enough it was free because of "limited connectivity"). Also pro-tip, if you have T-mobile you can use Gogo for free. There's a small upgrade fee to make it work the entire duration of the flight. It's intended to be mobile only but I'm su…

Well, yes, but Ku band means all the benefits of the simple antenna are gone. Do they try to enforce "mobile only" solely with a MAC prefix database?

>Do they try to enforce "mobile only" solely with a MAC prefix database?

Nope, way simpler than that. Just a simple user agent check. Although recently they've made some changes that make it harder, but just loading up the iphone simulator gets around it.

Now watch someone from Gogo see this and fix the loophole.

Re: FCC Authorizes SpaceX to Provide Broadband Satellite Services

#78
post #64

What will the latency be like? My understanding is that these satellites will be in lower orbit, allowing for shorter round-trips... But how much shorter exactly? And how would that translate to real-world latency? Presumably there would be multiple hops involved in traversing the SpaceX network?

Geosynchronous orbit is 35k kilometers up, which a calculator tells me is 119 light milliseconds from the surface.

Iridium satellites were the first set of satellites I could find numbers for that made any kind of relevant example. They orbited at 781 kilometers, or 2.6 light milliseconds away. Over 45 times closer.

Re: FCC Authorizes SpaceX to Provide Broadband Satellite Services

#79

What the implications are for countries that severely restrict and monitor internet access? Would Chinese citizens be able to sign up for this service? Would SpaceX comply with foreign governments asking to ban connections or new customers from their countries?

see here: https://news.ycombinator.com/item?id=16712540

Unless the rooftop CPE can be significantly disguised, it'll be difficult for places like Iran. The Iranian government periodically goes on (not very successful) campaigns to get people to remove rooftop Ku-band TVRO, Rx only satellite dishes. Those don't transmit. With a portable spectrum analyzer it will not be difficult to identify starlink rooftop CPE radios.

This is ultimately the same problem that applies to rubber hose cryptanalysis. From a network engineering perspective, if an authoritarian state can use sufficient local resources to control the OSI layer 1, it doesn't matter how good your L2 to L7 are.

Re: FCC Authorizes SpaceX to Provide Broadband Satellite Services

#80
post #4

This is monumental - I claim every major advance in communication technology immediately precedes a major progress for society. This will make the 'Internet' truly global and ubiquitous. So excited for the developing world.

Careful.

Major advances in communication technology also precede major military upsets. Only the victors labelled those as progress.

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