Seeking information about interesting trials in the world

Archived from groups: alt.internet.wireless (More info?)

rsegoly <roni.segoly@gmail.com> wrote:
> Hi,
>
>
> Does anyone have information about interesting trials of connecting
> large communities wirelesly and mainly the conclusions or new trends?
>
>
> I know in the south of US that was effected by Catrina is covered now
> using Wimax, but I am more looking for what people think / want / do
> when they are connected all the time.

Wimax has serious limits.
There is hype about many Km range, and many Mb/s for each user.
This is just hype.
Consider an area with one broadband connection every 20m, or 100000 users
in a radius of 4.5Km.
Yes, Wi-Max may be able to provide several users with reasonable bandwidth,
but will simply fall over at a bare fraction of wired information densities.

Archived from groups: alt.internet.wireless (More info?)

rsegoly <roni.segoly@gmail.com> wrote:
> I understood the bases will be every 2-5 Km so the number of potential
> users is bigger OK, in Korea Samsung assume (on similar technology -
> Wibro) bandwidth of 2-4Mbits/sec for end users.
>
> Also look at the attached link.
>
> http://www.wimaxtrends.com/article [...] 90505b.htm
>
> "It is looking to use WiMAX for the last mile in a planned network to
> span the US and parts of Canada and Mexico"
>
> What do you understand out of it? Is it planned to be used for TV
> broadcasting or return channel only?

Return channel.
At 2Mbps (not a great picture) that's 30 or so channels).

Wimax is ridiculously overhyped, in places.
Total bandwidth per 'tower' is 70Mbits/sec.

As I understand it.
Average per-user traffic (for most users) of a UK ADSL ISP is around
1GB/month. Call it 1KB/second.
That's only 7000 users, or 140 users maxing out a 512K connection.

Of a UK ISP, it was reported that 0.3% of users maxed out their connection.
7000/333=21, so maybe 6000 users.

However, connect those 6000 users to ADSL, and you've got about 50 times
the raw bandwidth.

A replacement for TV, or wired internet, no.
A useful adjunct, and something mobile phone operators should be very, very
scared of, yes.
Mobile phone traffic at reasonable quality is maybe 4K/second.