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SpaceX plans worldwide satellite Internet with low latency, gigabit speed

arstechnica.com

251–260 of 540 posts

Re: SpaceX plans worldwide satellite Internet with low latency, gigabit speed

#251

And hella pingtimes ;)

> SpaceX expects its own latencies to be between 25 and 35ms Unless you're doubting their math, that's not a high ping at all. In fact, that's a pretty amazing improvement given that existing satellite internet is >500ms. I didn't realize the difference between LEO and geostationary was that high.

Geostationary birds are in a 42K+ km orbit. That's almost a quarter second round trip just taking the speed of light into account and assuming the satellite is directly overhead.

Back when international phone circuits were mostly satellite, you'd find yourself continually starting a sentence at the same time as the other party because that short delay messed up the flow of the conversation.

Re: SpaceX plans worldwide satellite Internet with low latency, gigabit speed

#252
post #64

Earlier quoted context omitted.

That still wouldn’t give you access to piracy sites, for which the FBI has required US ISPs to censor them from their DNS servers. I’ve had this occur quite a few times now that 8.8.8.8 (yes, verified with DNSSEC to be the real one) and DNS servers of US ISPs returned different IPs than the authoritative nameservers, and the returned IPs always showing a neat "The FBI has seized this property due to piracy" link.

> he FBI has required US ISPs to censor them from their DNS servers. That's a pretty serious statement, the government threatens infrastructure providers all the time but I haven't heard of the FBI requiring ISP level censorship of DNS. > I’ve had this occur quite a few times now that 8.8.8.8 (yes, verified with DNSSEC to be the real one) and DNS servers of US ISPs returned different IPs than the authoritative namese…

Here's an example from the FBI website itself, announcing the seizure of 150 websites by taking over control of their domain name:

https://archives.fbi.gov/archives/washingtondc/press-release...

Re: SpaceX plans worldwide satellite Internet with low latency, gigabit speed

#253

Earlier quoted context omitted.

> he FBI has required US ISPs to censor them from their DNS servers. That's a pretty serious statement, the government threatens infrastructure providers all the time but I haven't heard of the FBI requiring ISP level censorship of DNS. > I’ve had this occur quite a few times now that 8.8.8.8 (yes, verified with DNSSEC to be the real one) and DNS servers of US ISPs returned different IPs than the authoritative namese…

Here's an example from the FBI website itself, announcing the seizure of 150 websites by taking over control of their domain name: https://archives.fbi.gov/archives/washingtondc/press-release...

I believe the FBI seized the domain names, as in, from the registrars/registries themselves. They talk about some of them being forefeited, which would have happened at registrar-level. There's nothing in there that suggested manipulation of the DNS servers themselves.

Re: SpaceX plans worldwide satellite Internet with low latency, gigabit speed

#254
post #160

napkin math (chemistry style): (4425 satellites * 23Gbps) / ((60,000PB of fixed internet traffic / 1 month [1]) * (12 months / 365 days) * (1 day / 24 hours ) * (1 hour / 60 minutes) * (1 minute / 60 seconds) * (8 bits / 1 byte) * (1024 Tera / 1 Peta) * (1024 Tera / 1 Giga)) = An astounding O(54% of global internet traffic) [2]! Obviously there are many many more variables in this [3]. Nonetheless this will be super…

For [3], Guesstimate ( https://www.getguesstimate.com ) pretty much does that.

Re: SpaceX plans worldwide satellite Internet with low latency, gigabit speed

#257
post #7

Free, global internet access is the next step toward a smarter, more progressive planet. I don't even care about the speed - if the only thing users could access was wikipedia, I'd still personally donate to the project. I cannot emphasize how important democratizing knowledge is to me (and many others).

Spreading true (well, at least less wrong) information is a noble goal. Unfortunately, I'm not sure we're not seeing such information availability providing avenues towards a smarter, more progressive planet. Instead, the internet seems to be helping people create cocoons of ignorance and "evidence" to support even the most specious claims - such as the world being flat. Knowledge does not seem to be enough. Wisdom a…

I agree with you -- but I want to point out another way that widespread internet access is insufficient. We need to update our laws to allow true information democratization. Right now, under dominant legal systems, information is far too easy for companies to box off and "own", even when they don't own it (extensive discussion about this earlier today on the thread about Google locking out people who resold their Pixel devices).

Yes, it's true that underground utilities and services can be produced that skirt legal responsibility for a good while, but without the legal ability to come into the sunlight and flourish, such things will always remain incomplete, spotty, and hard to come by, always denied a full resource allocation and full publicity profile.

We need to update copyright to something that's sane for the digital age, something that doesn't pretend like a RAM representation that exists for microseconds represents millions of dollars in damages. We need to update patent law to something that protects small innovators without becoming a club that can bludgeon competitors who are playing fair. We need to repeal and replace the Soviet-era CFAA and its copycats, which still govern most network access and allow tech monopolists to take your data, and thus your life (calendars, emails, photos, phone numbers...), hostage.

The true potential of a free internet remains unseen, stifled by greedy monopolists hiding behind their hypocritical rhetoric about freedom and openness while they prosecute and harass anyone that tries to ensure you can keep control of your most personal records.

Re: SpaceX plans worldwide satellite Internet with low latency, gigabit speed

#258
post #27

I don't know how they're going to get 25/35ms hops. If they're using low orbits to reduce latency, the surface coverage is going to be lower so they're going to have to mesh them in some way to span large areas. That means routers and intelligence which means uplink, interlink, downlink hops in both directions. 600ms here we come again.

Another thing to consider is that fiber slows down light substantially vs radio and laser comms.

Re: SpaceX plans worldwide satellite Internet with low latency, gigabit speed

#259
post #7

Free, global internet access is the next step toward a smarter, more progressive planet. I don't even care about the speed - if the only thing users could access was wikipedia, I'd still personally donate to the project. I cannot emphasize how important democratizing knowledge is to me (and many others).

Can we get free clean drinking water first? That is more of a problem than free internet.

I live in a developing country. Much of the problem in the communities I've seen is a lack of knowledge.

I'd much prefer if local people become the experts through knowledge sharing / gathering than bringing in expensive consultants to train them and tell them how to do it. The most vulnerable places often slip through the cracks.

Smart phones are dominating these communities, not the latest and greatest but they are definitely starting to come online. By the way, there are plenty of videos to understand the different solutions on offer for clean drinking water. Email and VOIP allows community leaders get expert advice without leaving their shelters.

By empowering the community to chose and implement a solution most appropriate for them they will be able to achieve much more in the future. Teach a man or woman to fish and all that jazz...

Re: SpaceX plans worldwide satellite Internet with low latency, gigabit speed

#260

Some countries are not going to like this, network infrastructure are important national assets and are often done with high levels of regulation to ensure availability and pricing, so a lot of nations will not think it's in their competitive advantage to have this provided by a foreign entity.

Even within the US I'd be very surprised if the cable companies don't try and somehow block it.
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