Chris Townsend wrote:
I'm not so sure. BT were advertising their new 10 terabyte broadband speed for their new fibre, and Netflix want to start distributing 4k on their Network starting next year.
Good luck getting it. Advertising is one thing, getting it is another. This is my area :)
Four major issues:
1) Fibre cabinets are a rare find. Your exchange might be fibre-enabled, but the cabinet also has to support FTTC. Most do not. I can't find many offices in Bath which have access to fibre. My home doesn't in a central BA1 area. Same with Yorkshire. Fibre-enabled exchange, no cabinet.
2) FTTP is required for such bandwidth. Providing FTTP is incredibly expensive for existing homes. Most FTTC users often report slower-than-expected bandwidth as they are more than 500m from their exchange. Most Brits with fibre still only receive an average 5Mbits/s as they are so far from their exchange.
3) Servers. The biggest bottleneck is providing the content from fast enough servers, a reason why Apple are building huge datacenters. You need to be able to push the data fast enough. People do not realise that most commercial servers sit on a maximum throughput of 100Mbit/s. Maximum. And that's with 1 person connected (getting 100Mbit/s). 10 people connected to the server, the max is 10Mbit/s/person and so on. Therefore the servers delivering the content, from most providers, is a bottleneck. In addition, the routing. We have no end of issues with our Australian customers downloading content from our German server. The routing causes problems for relatively small 200MB files. Give them a 1GB file (100x smaller than a 4K movie) and they simply cannot get it on their computer. The routing between Germany and Australia is so poor that the download crawls along, even though the server is on a 1GB/s pipe.
4) Capped broadband. As customer's are demanding cheaper broadband (few home users want to pay over £15/month for broadband), their broadband is capped at 100GB of data/month or less. One 4K download would wipe this in one go. Impractical. Even if they have an unlimited broadband connection, there's a fair use policy and 4K streaming will cause issues. Either users will have to pay more for their broadband (as ISPs have to rent their bandwidth) or capping will be more widely enforced.
Lots of obstacles. Don't believe the PR :)