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tibby.dude
01-04-2005, 08:08 PM
http://www.tvtechnology.com/features/inside-broadband/f_Workman-03.28.05.shtml

You'd think as one of those former hard-bitten, nihilistic reporter-types, I would have asked tougher questions about all the WiMax window dressing popping up over the past year. Last August, when I wrote about the new technology in the wake of significant backing by Intel, I heralded it as a hopeful competitor to DSL and cable broadband. (I also plugged into power-line broadband, but that's another story.)

Now it's time to fess up--this tech is nowhere near ready for primetime consumer solutions. Its business applications are limited and its long-term ability to provide mobility is questionable.

WiMax, short for "worldwide interoperability for microwave access," is essentially radio technology that uses fixed antennas to provide two-way broadband connections (up to 75 MBps) to users up to a 30-mile distance (though half that is optimal).

It's got some killer advantages. First, it's actually here; providers have been popping up in several metro areas. Second is price--for about $500 a month, one of the early WiMax providers, TowerStream, offers a 1.54 Mbps connection. That's nearly half the price of a standard T-1 line. And WiMax providers can do this because they don't have to lease lines from big telcos. Any customers within a 15-mile radius of a WiMax antenna can pick up the signal, even using it to power WiFi hotspots within their premises.

Though there's a narrow but profitable market for this technology with small businesses, it's hard to see how it can break out of that niche.

Big companies need security and reliability. Though WiMax providers can offer QoS guarantees and encrypted service, they can't match secure landlines and backup power supplies of T-1 service providers. That makes WiMax little more than a backup.

And WiMax may never attain widespread home use. Installing a receiving antenna can cost hundreds of dollars. Meanwhile, DSL and cable broadband providers have been upping speeds and lowering prices.

There are also larger issues holding back WiMax that combine to serve as an illustration of the bugaboos that can derail a promising technology.

INTERFERENCE POTENTIAL

The litany runs a familiar gamut. WiMax signals use public airwaves rather than licensed spectrum, so interference can result, particularly if multiple players saturate a market. Patents and legal issues could at least delay rollouts, and the ever-present standards issue remains a pressing concern.

Last June, the IEEE approved the 802.16-2004 standard, promising equipment interoperability as tested by the industry group WiMax Forum. But some reports indicate developers looking at the standard are reeling from its complexity, which could bode further delays from ongoing modifications.

Additionally, a Yankee Group report projects WiMax CPE (consumer premises equipment) costs will drop from the current $250-$600 range, but not until 2006.

The report goes on to anticipate the most significant impact on WiMax will come from new silicon embedded in laptops and other mobile devices after 2007, based on the 802.16e standard, eliminating CPE. Intel's support will be critical. The company has announced it will release chips for WiMax elements, such as relay stations and towers, in the coming months, and add WiMax support to its notebook PC processors by next year. But skeptics say 2006 or 2007 is a far too optimistic timeline in which to have effective equipment.

The mobility cloud remains the gloomiest on the WiMax horizon. Users want to take their broadband with them, and with notebook adoption expected to double in the next few years and cell phone use exploding, there are too many competing technologies that promise broadband-on-the-go. Cell phone companies are building third-generation (3G) networks, but several, including Nextel, have announced they will not opt for WiMax.

The WiMax 802.20 mobile wireless standard is still a pipe dream in the works, say critics, who estimate it may be four or five years before true deployment. Meanwhile, other wireless solutions on tap, such as Flash OFDM and UMTS TDD, offer mobility and could deliver on their promise earlier.

Why did WiMax get so hot last year, only to fizzle?

This is largely a product of its primary backer, Intel, overstating its case to overcompensate for previous misfires in the broadband arena.

If you go back to recent, but dim, history, Intel backed its favorite wireless standard, HomeRF, over WiFi, only to get steamrollered by the latter. Now it's getting hammered for its WiMax braggadocio.

The chipmaker behemoth has been productive in promoting municipal wireless, calling on state and local officials to spurn lobbying by phone and cable broadband providers seeking to block municipalities and other public agencies from setting up public networks.

For this effort, Intel merits kudos.

But turning its PR gang loose to wax on WiMax deserves opprobrium.

While all the hoopla dust settles, small businesses can turn to WiMax as a low-price alternative, or backup, to T-1 service. Larger broadband providers are also looking at WiMax as an effective last-mile backhaul solution. And there are plenty of rural areas that could use WiMax by putting the antennas on transmission towers.

But none of that restores the glitter to WiMax as a near-term solution for providing ubiquitous, mobile, low-cost broadband.

In the future I'll try to save my waxing for something more productive--perhaps a snowboard or skis while it's still winter.

mbs
01-04-2005, 08:25 PM
Whilst I have absolutely no idea of the technicalities involved, for what it's worth, my gut-feel still says this is the technology to watch - it has market disruption potential second to none, and is not pie-in-the-sky or a half-baked solution being rolled out to customers (which most of the current offerings appear to be). Intel's deep pockets also does it no harm...

tibby.dude
01-04-2005, 08:37 PM
Well Intel has been wrong before ... remember a 64 bit CPU called Itanuim ???? :).

But the market will decide and we will see.

mbs
01-04-2005, 09:40 PM
Well Intel has been wrong before ... remember a 64 bit CPU called Itanuim ???? :).

But the market will decide and we will see.
Too true... I'm reminded of the Betamax/VHS fight. Anyways, at the end of the day, the more choices on offer, the better for the consumer. Philosophically speaking, whoever provides that which the consumer wants, will win. Methinx this means a reliable, unconstrained local loop for all data types. Technically speaking, I don't know enough to know if it's possible, though Intel seem to be betting the farm on this technology. Politically speaking, aluta continua...

arf9999
01-04-2005, 10:55 PM
Jeez, I wish people wouldn't mention beta/vhs! It generally is a very bad example 'cos it one of the few times that a significantly inferior technology won out (it is, however, a very good moral tale of the dangers of proprietry technology as opposed to mass licensing/open source).

But back to the case at hand: I think that the article makes some very good points, but most of them relate to the USA only. The fact is that in many countries wired connectivity is not cheap and Wimax may be a good solution for last mile connectivity. Also, the fact that Intel will only roll out consumer chips in 2006 is not necessarily a bad thing. Often a short breathing space allows for a more stable product offering. 2006 is only a year away ffs. In SA that will be perfect timing for the SNO!

captainwifi
08-04-2005, 07:24 PM
http://www.airspan.com/products_sub.htm
Wi-max client devices on the license free 5.8ghz bard are available.
Imagine this stuff on the AODV or Hazy ad-hoc mesh routing protocol and you
truly have a disruptive technology non line of sight!

mbs
08-04-2005, 09:33 PM
http://www.airspan.com/products_sub.htm
Wi-max client devices on the license free 5.8ghz bard are available.
Imagine this stuff on the AODV or Hazy ad-hoc mesh routing protocol and you
truly have a disruptive technology non line of sight!
Had a look at the Airspan site, but it's all somewhat over my head. Call me the eternal cynic, but I also got turned off by the marketing-speak I read. For example, what's 'superior economics'? And if there's a term that I absolutely detest, it's 'cutting-edge'! Maybe TheRodent or Daffy or someone can comment on the technicalities of all this, using this link to their marketing network schematic - http://www.airspan.com/products_sub.htm#

Anyway, this is all moot, until such time as WiMax is actually rolled out locally. In the meantime, perhaps captainwifi could contact Christoph Heinermann (see contact details on their site), to establish what Airspan's position is regarding the future of WiMax in ZA - will they be just another supplier to the market? Do they have any position on community mesh networks - will they actively support them for WiMax rollout, even to the extent of free infrastructure for worthy/needy causes? Would they take specific steps to boost and promote proliferation, and if so, what?

captainwifi
09-04-2005, 11:59 AM
http://www.solectek.com/ has achieved NLOS 12meg link with an antenna mounted on a jeep. They drove to various spots to test the link throughput.
See http://www.solectek.com/techlib/techpapers/testpub/NLOS-fieldtest-010104.pdf
They used OFDM on the 5ghz band 400mw transmitter. Their 5ghz gear has a throughput of 72meg/s. The receiving antenna managed 20meg 10km from the base station, mounted only on a 1.5m high tripod. The base station though is a two storey building 40feet high.
This is what Wi-max is all about NLOS. Infact I would not be surprised if they
are using Wi-max and just not stating it.
http://www.solectek.com/products/bridges-and-routers/prod-sm5kMulti-feat.html
Quote:"..With a high-power radio, the 5000 Series maintains full throughput over many miles of coverage areas. For example, a multipoint network running at 36Mbps data rate on a sectoral base station can cover a radius of 9 miles with a long-range subscriber unit, and 6 miles with a mid-range unit."

http://www.solectek.com/news/press-releases/pr-030205.html
describes how this NLOS is used for security surveillance.
"...Using a two-tier, macro/micro cell approach, Active Solutions has designed multiple, local networks for the cameras using Solectek SkyWay 5000 Multipoint Systems to backhaul all video feeds to the central monitoring station. Initial macro cells were deployed in high crime areas of New Orleans in October of 2004, using 3 multipoint networks and almost 30 streaming, network cameras. Solectek systems not only provided sufficient bandwidth for high-resolution images, but also added crucial NLOS capabilities for most camera locations. A total of 240 cameras should be in service in New Orleans by the end of 2005. "
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mbs
09-04-2005, 07:25 PM
That's all very well and good, but not relevant to the local scenario. Why don't you endeavour finding out what the local WiMax scene is, from the Airspan link you originally posted? Is there a chance that the solectek stuff will be transplanted here - if not, why bother? :confused: :confused:

dbnnet
09-04-2005, 08:03 PM
I agree, why bother: There are many so called "WiMax" technology companies out there.
Many of whom (when you dig deep enough) don't actually ship any real WiMax products.
As history shows, most of these venture capital funded companies will fail too!

Earlier this year I got feedback from a company called AirTegrity (www.airtegrity.com)
who ( besides shipping real products) are seriously keen to enter the SA market.

captainwifi
09-04-2005, 09:24 PM
I suggest we should pick up the phone and contact Solectek Monday.
It is obvious that they have a working Wi-max system, but can't state it as such for legal reasons. Wi-max is not a scam, it is certification issues holding back deployment. 5.8ghz AP are being used in South-Africa
5.8ghz is an international license free band so there
should be no issues in getting Solectek's wimax gear into our country.

dbnnet
09-04-2005, 10:06 PM
..... but can't state it as such for legal reasons.
There are no legal reasons... only an excuse for companies who are selling vapourware!
Those that are selling Wimax products (i.e. Alvarion) have clearly listed their
customer base, product codes, and cost. PERIOD!