Jack, You are absolutely right about this. In the first email you asked if that had been figured in to my thinking of open unfiltered access. It has. Spectrum is a valuable resource and there is only so much of it to go around in each of the allocated frequency sets that are available today. As you said in your email:
"It's not a question of fitting the "business model"; it's a question of fitting today's current technology model. With limited license-free frequency availability, a WISP can only serve X amount of bandwidth to Y number of customers." Two points here: 1. Today's technology does limit the amount of bandwidth per AP and the amount of simultaneous subs per ap .. But that is today's technology. Although pushing the manufacturer can help this situation, it can't solve it by itself. With most Aps supporting only a 20Mb backplane, your point is very clear. With 3.65 availabity and 50 MHz of spectrum now available .. (ok, 25 for now, fair is fair) and TVWS on edge of realization, I think the spectrum will start to open up. Unless there are new modulation schemes adapted and applied to take advantage of the used and abused 2 and 5 GHz spaces, I think this is our best bet. Today's technology does have its limitations, but tomorrows will not. 2. License-free spectrum. This is not a licensed-free only issue. Now that WISPs have access to other bands available, and there have been partnership opportunities available for some in the MMDS/ITFS (BRS/EBS .. Whatever ;)) range, this takes the chains of working in unlicensed spectrum away from those who have been held by it for so long. Again, the equipment performance plays here too, but it is definetly a trend that hopefully will play out nicely. As spectrum becomes available and the devices are created and pushed to market to support the higher usage requirements of consumer products, it will start to become even more competitive in the very near future. -d On 11/24/08 12:10 PM, "Jack Unger" <[EMAIL PROTECTED]> wrote: > Mike, > > There are real physical limits to the amount of throughput that a radio > channel (X MHz wide) can handle. Ranting at manufacturers isn't going to > change this very much. You can only flow so much water through a pipe. > Increase the pressure without increasing the pipe diameter and the pipe > bursts. This issue is physics-based so ranting may make you feel better > but when you're done, the same physical constraints remain. This is why > having enough spectrum space (enough channels) is so important. Bottom > line is WISPs don't have enough spectrum space to deliver all that > throughput reliably to all those customers without creating interference > for every other network operator out there. > > jack > > > Mike Hammett wrote: >> <rant>This is why we need gear capable of higher throughputs. Too many >> WISPs out there don't press their manufacturers. They'd rather just put up >> a couple Canopy radios and complain on a list about how they can't deliver >> X, Y, or Z to a customer. >> >> I have complained to manufacturers. WiMAX is NOT the answer we are looking >> for. Most of the gear being released in the US is using small channel >> sizes, so small throughput. >> >> I will not purchase another AP unless it is able to deliver 40 mbit of >> throughput, end of story. Fortunately for me, they're out there... >> Mikrotik can (though uses a lot of spectrum). Deliberant is working on it. >> I believe the new Canopy is close. >> >> Orthogon can do 300 mbit in 30 MHz... expensive, but it can be done. Where >> are the engineers at the other companies? Where are the PtMP products? I >> haven't purchased any of their products, but from what I hear, Deliberant is >> going to do 70 mbit in 20 MHz by spring. Not as good as Orthogon, but a lot >> better than anyone else out there. 20 MHz of WiMAX could produce acceptable >> speeds, but no one is doing it. >> >> <sarcasm>Buying an $8k WiMAX AP that only does 15 megabit sounds like a >> great idea!</sarcasm>I could MAYBE see $8k for a TV whitespaces AP that >> supported bonding of several channels (say 4 or 5)... In 3650 or 5 gig, no >> thanks. >> >> Where has the innovation in the last few years gone?</rant> >> >> >> ----- >> Mike Hammett >> Intelligent Computing Solutions >> http://www.ics-il.com >> >> >> >> -------------------------------------------------- >> From: "Dennis Burgess" <[EMAIL PROTECTED]> >> Sent: Sunday, November 23, 2008 3:42 PM >> To: "WISPA General List" <wireless@wispa.org> >> Subject: [WISPA] NetFlix Streaming Bandwidth Information >> >> >>> In case you did not know, recently NetFlix and Microsoft teamed up to >>> provide video on-demand services to all of the XBox 360 users. Not only >>> can you start one of 12,000 videos in a matter of seconds on your >>> computer, but you can also do this right on your Xbox 360, bringing it >>> mainstream for many who have never used it. Not to mention the super >>> low cost of basically $9 bucks a month! >>> >>> I have been using it for a few weeks and since it came out on the XBox >>> 360 last Wednesday, I have streamed GIGs. Soon as you hear, gigs, you >>> may be interested to know what is required to maintain a high-end video >>> stream. So, I put together some numbers for everyone, in case you are >>> interested in how much bandwidth this service uses! A >>> >>> You can see my data at http://www.linktechs.net/netflix.asp. Feel free >>> to shoot me a e-mail off-list if you have any questions! >>> >>> ------------------------------ >>> * Dennis Burgess, CCNA, A+, Mikrotik Certified Trainer >>> Link Technologies, Inc -- Mikrotik & WISP Support Services* >>> 314-735-0270 >>> http://www.linktechs.net >>> <http://www.linktechs.net/> >>> >>> */ Link Technologies, Inc is offering LIVE Mikrotik On-Line Training >>> <http://www.linktechs.net/onlinetraining.asp>/* >>> >>> >>> >>> ---------------------------------------------------------------------------- >>> ---- >>> WISPA Wants You! Join today! >>> http://signup.wispa.org/ >>> ---------------------------------------------------------------------------- >>> ---- >>> >>> WISPA Wireless List: wireless@wispa.org >>> >>> Subscribe/Unsubscribe: >>> http://lists.wispa.org/mailman/listinfo/wireless >>> >>> Archives: http://lists.wispa.org/pipermail/wireless/ >>> >>> >> >> >> ----------------------------------------------------------------------------- >> --- >> WISPA Wants You! Join today! >> http://signup.wispa.org/ >> ----------------------------------------------------------------------------- >> --- >> >> WISPA Wireless List: wireless@wispa.org >> >> Subscribe/Unsubscribe: >> http://lists.wispa.org/mailman/listinfo/wireless >> >> Archives: http://lists.wispa.org/pipermail/wireless/ >> >> >> -------------------------------------------------------------------------------- WISPA Wants You! 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