Live data from Hacker News

How London cracked mobile phone coverage on the Underground

ianvisits.co.uk

11–20 of 179 posts

Re: How London cracked mobile phone coverage on the Underground

#12
post #9
post #5

Pretty neat but as someone who commutes every day on the New York subway I hope it’s never “cracked” here. Phone usage without headphones is already annoying enough and I greatly appreciate the various people trying to take calls eventually lose service.

Not to excuse other people's behavior but buying a decent pair of noise canceling headphones or earbuds will make putting up with it a whole lot easier. You don't even have to listen to anything, or you can put rain noises and thunderstorms. It's as much better soundscape than public transport.

Noise cancelling headphones on NYC public transit is insanity.

Re: How London cracked mobile phone coverage on the Underground

#13
post #5

Pretty neat but as someone who commutes every day on the New York subway I hope it’s never “cracked” here. Phone usage without headphones is already annoying enough and I greatly appreciate the various people trying to take calls eventually lose service.

Why is your need for silence more important than other people's need to communicate?

Re: How London cracked mobile phone coverage on the Underground

#14
post #13
post #5

Pretty neat but as someone who commutes every day on the New York subway I hope it’s never “cracked” here. Phone usage without headphones is already annoying enough and I greatly appreciate the various people trying to take calls eventually lose service.

Why is your need for silence more important than other people's need to communicate?

Neither of those things are needs, it’s just wants and preferring your own wants over others is completely normal.

Imagine trying to live your life where other people’s desires by default overrode you own.

Re: How London cracked mobile phone coverage on the Underground

#15
post #8

One of the frustrating things about international roaming in the UK is typically your plan does not include coverage on this neutral network on the underground

Source? As someone that comes back to London every month, I’ve been able to roam the same as anywhere else in the UK. I’d be shocked if this were true.

Re: How London cracked mobile phone coverage on the Underground

#16
This is the new system for emergency communications? TfL just finished up an upgrade on that in 2021. That upgrade was built by Thales.[1] That system is purely for operational use, and is not cell phone compatible. It's compatible with the gear cops and fire brigades use. Is it being replaced?

As late as 2018, the classic century-old system, with two bare wires on insulators on the tunnel walls, was still maintained.[2] Clipping a telephone handset to the two wires would connect to a dispatcher, and the wires were placed so that reaching out of the driver's cab to do this was possible. In addition, squeezing the wires together by hand would trip a relay and cut traction power. Is that still operational? The 2011 replacement was ISDN.

[1] https://www.thalesgroup.com/en/news-centre/press-releases/th...

[2] https://www.railengineer.co.uk/communications-on-the-central...

Re: How London cracked mobile phone coverage on the Underground

#18
>There’s another distance limit at work here, and that is the speed of light. It takes milliseconds for the signal in your phone to reach the hotel above ground and be handed over to the mobile network. But if it takes too long to get from phone to hotel, then your phone call s..a.rt..s..t o. br..e..ak up. As it happens, that distance is about 12km, so Boldyn needs nine hotels around London to cover the whole of the Underground

I find that interesting. Another fascinating rabbit hole the article has sent me down is that there is an unused station called north end. I've been down that stretch before and i had no idea. Does anyone know if passengers can see it?

Post reply on HN