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To: axial who wrote (14698)	4/20/2006 8:18:15 AM
From: Peter Ecclesine	Respond to of 46821

Hi, I have a Canadian friend working on Canada's Spectrum Policy, and his research into 'The Tragedy of The Commons' showed it dates back to the printing press, and keeping the serfs in their place. It was common law at that time that if an offender could prove they were learned (by reading four selections from the Bible), they could be let off with a warning. The context was the Lords owned the commons, and permitted the serfs to use them, rather than have the serfs rise up against the lords. I asked him for his essay yesterday. IEEE 802.11h (2004) introduced Transmit Power Control for the 5 GHz PHY, and it is part of each of the new PHYs - .11n/.11p/.11y. Before that, Wi-Fi PHYs have up to eight Transmit Power Levels, and the radios have Management Information Base interfaces to command power level. Neither the standard nor Wi-Fi specify the number or value of transmit power levels. 802.11k adds the Received Channel Power Indicator, which can provide the feedback information for closed-loop power control, and the new PHYs each have it or something similar like EVM. As the .11n PHY is backward compatible with .11a/.11b/.11g, all the major silicon vendors will have silicon with Transmit Power Control supported. Wi-Fi Alliance will test Transmit Power Control when the FCC finishes specifying the test procedure for demonstrating coexistence with radars later this year. petere petere

To: axial who wrote (14698)	4/20/2006 8:33:04 AM
From: ftth	Read Replies (1) \| Respond to of 46821

Jim, re: Not to overstate the case, in some dense environments we should expect to see performance degradation in wireless using unlicensed bands. Don't know about you guys, but it seems it doesn't matter much if it's licensed or unlicensed. I've had 4 different licensed cellular services over the past few years, and they've all become pathetic and progressively worse in terms of mid-call drop-outs, garbled quality, and complete call drops. Seems more like the "Tragedy of the marginal-competition marketplace," or the "Tragedy of vertical integration of service provision with infrastructure investment" more than anything. It practically guarantees this outcome of milking the infractructure for all it's worth in service revenues, for years and years, without any meaningful additional infrastructure investment to account for added load. There just isn't adequate competitive pressure for new investment in infrastructure, and all the operators co-exist in a state of marginal quality and ridiculously oversubscribed networks. And why not? People are locked in to multi-year contracts and sometimes expensive gear. They have to tolerate the piss-poor quality and they have little bargaining power as a marketplace to steer things in a better direction.