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InvalidError

join:2008-02-03
kudos:5
reply to Guspaz

Re: Spectrum crunch: not a problem today, but eventually

said by Guspaz:

There's a fixed amount of wireless spectrum available, and there's a theoretical maximum amount of data that can be pushed through it. That's a laws-of-physics type limitation, no new wireless technology will ever relieve us of that limitation.

You are missing one parameter: fixed amount of bandwidth within a given cell. Reduce the cell radius by half, you can now reuse the same spectrum up to eight times as often (3D space) and you can repeat the process until you reach the smallest practical cell size such as pico-cells (50-200m range) embedded into incumbent modems/ONTs/CPEs turning every wired subscriber into a wireless cell for the incumbent's own wireless network.

For now, incumbents are sticking mainly to femto-cells (~10m range) due to the technical challenges of maintaining accurate frequencies over time but this will probably change once a cost-effective and reliable solution is found.


battleop

join:2005-09-28
00000

That can be done but equipment, towers, and engineers are not cheap.


InvalidError

join:2008-02-03
kudos:5

said by battleop:

That can be done but equipment, towers, and engineers are not cheap.

Most of the engineering is about picking locations, prepare mounting arrangements and getting uplink/power on-site. You have none of those problems with embedded pico-cells in subscriber CPEs since the wired subscriber provides all of the above for free... doesn't matter if individual pico-cell placement is sub-optimal if you have many times more cells than you need to handle demand. Worst case, you turn off some cells where there is excessive overlap.


88615298
Premium
join:2004-07-28
West Tenness
reply to battleop

said by battleop:

That can be done but equipment, towers, and engineers are not cheap.

Us customers are in fact giving these companies tons of money. In the old days companies use to take profit and reinvest it to grow the company. Today that seems to be a dirty word.