How London cracked mobile phone coverage on the Underground

(ianvisits.co.uk)

56 points | by beardyw 5 days ago ago

19 comments

  • Animats an hour ago

    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...

  • zith 13 minutes ago

    Interesting! I know Sweden was not first, but Stockholm has had 3g coverage in the subway since 2005 and 4g since 2016.

  • dbish 5 hours ago

    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.

    • lostlogin 4 hours ago

      It’s a tough choice, is it worse to hear their phone calls, or hear 2 seconds of every bit of TikTok/Instagram feed trash. Either way, no cellular access seems a plus.

    • edent 2 hours ago

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

      • hexbin010 3 minutes ago

        [delayed]

      • Retric 2 hours ago

        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.

        • userbinator 5 minutes ago

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

          Unfortunately that happens a lot; it's called the government.

    • esperent 4 hours ago

      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.

      • buckle8017 2 hours ago

        Noise cancelling headphones on NYC public transit is insanity.

  • dfajgljsldkjag 5 hours ago

    I had assumed the delay was technical but it turns out it was mostly about finding a business model that worked for everyone. It is good they finally settled on a shared infrastructure approach so they do not have to crowd the tunnels with extra equipment.

  • hexbin010 6 minutes ago

    How London enabled TikTok addicts to annoy other passengers

  • matham 2 hours ago

    I'm having a really hard reading this. Not only are the paragraphs are so short, they each feel like part of a uncompleted thought.

    The content doesn't feel AI generated, but maybe it is? I read somewhere that short paragraphs is an AI signature!?

  • dotBen 4 hours ago

    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

    • Brajeshwar 3 hours ago

      Did the UK stop people from just picking up a cheap SIM at the Airport? I always like a local number when traveling. Anyway, Indian Roaming plans are so cheap these days that it's much easier and cheaper to just subscribe to them as part of the plan. These days, I don’t even need to add/activate it or anything, the providers turn it ON when I start my phone outside India and turn it off when I re-activate back in India.

    • inlustra an hour ago

      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.

  • inshard 29 minutes ago

    The Paris metro figured this out perfectly way back in 2021 - full bars, 5G.

  • Tsiklon 5 hours ago

    From looking at the WiFi ssid’s broadcast at the New York subway stations, I believe Boldyn also does the phone coverage here too

  • FridayoLeary 17 minutes ago

    >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?