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Dave Platt wrote:
In article , The problem with this is what I call the "alligator" effect. An alligator is an animal with a big mouth and small ears. Running a 1 watt access point will make the xmitter heard over a much wider area than it can hear the responses from the clients. Unless the other end of the link (i.e. client radios) are also running the same high power level, the range will be limited by the clients tx power. In other words, the system gain and power levels in both directions have to be evenly matched to avoid turning the high power access point into what I consider to be no better than a jamming transmitter. A not-uncommon scenario, I think. I've seen APs which put out a signal that has useful strength for blocks, and yet you have to be within about 100 feet of them to establish contact with a typical client system. This same issue is significant in other bands, as well. My area's ham-radio VHF/UHF repeater coordination group has a firm principle... a coordinated repeater's transmit coverage and receive coverage should be consistent. Having an ultra-high-powered transmitter simply causes interference well outside the repeater's practical use range. Having overly-sensitive receivers can also be a problem, albeit a lesser one, as it means that the repeater can be "keyed up" by remote stations too far away to hear the repeater properly. It's less of a problem, though, as most repeaters use CTCSS tone squelch these days and won't respond to signals intended for co-channel repeaters with a different CTCSS tone. I don't think this is an issue for 802.11 access points at all. All the problems you state would disappear with the correct algorithms controlling the packets/encryption/compaction ... there is just not enough interest to put together a team together to do it, and a for-profit organization would go broke doing it ... and, you can't get everyone to agree. The (A)ncient (R)etarded (R)adio (L)aggards) don't see a need--you see, no brass is required ... :-( Regards, JS |
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