Tue Feb 27, 2007 3:13 am
there's no such limit on RB's
you can connect even more but:
maximum (with still some quality level) performance of single 802.11b radio is about 2500Kbits (assuming normal outdoor conditions and medium noise levels), but thats only in one direction - so you can have 1500/1000 or 2000/500 etc
but maximum the packet per second rate defined by time slots in 802.11b standard is on 500pps level in one direction (like before, normal outdoor conditions) and pps are typicaly symetrical with download only little higher like 250/220 and 250/250 in most cases (if you have more on recive that's probably DoS attac pron your wireless clients ... )
So try to measure avarege pps rate of typical service you would like to sell.
Me for example with torrent active session on 1Mbits download and 500Kbits upload level, get about 135/115pps (250 ageregate) average ratio.
So you could connect clients like me only... two guys at the same time ...
normal client only web surfing - without _any_ download
is about 30/30 pps typicaly (when oppening websites)
one voip session is rated on 50/50 pps level, with special codecs you can get 30/30 pps but the quality will probably decarase.
so if you want to sell cheap internet without any quality you can connect 50 clients to one radio and that will probably work.
the other solution is :
use sectorized antennas (if you want to buy some give me an info) instead omni ones and use two or there wireless 2,4GHz cards with one 5GHz uplink on one base station
you really shouldn't put more than 3 antennas on 2,4GHz freq on one mast (because of interferences)
So let assume that we wil have 3 antennas:
the performance is almost 3 times greather than on one card
the pps radio on whole base station ageregate can be even 1500 pps (that about 50 active web surfers, 20 voip calls at the same time or 6 to 10 torrent guys)
basicly not every client is connected at the same time so you can connect 40-50 users on this whole bs and no one should complain regarding to performance, you can connect even more like 50-70 but you'll need to drop something and probably forget about VoIP
but that's ok i think, regarding typical range of normal base units on 5km level, if you can connect more, that means you shold bulid another BS near clients you want to connect - the basic law of cell network...