Nothing as far as I know... but the lower power limits and the higher frequency don't make it too feasible.
If you have to be within 1/4 mile of the tower to make mobility work... it seems like your going to spend a lot of money for nothing Daniel White 3-dB Networks http://www.3dbnetworks.com >-----Original Message----- >From: [email protected] [mailto:[email protected]] On >Behalf Of Tim Sylvester >Sent: Wednesday, September 09, 2009 4:53 PM >To: 'WISPA General List' >Subject: Re: [WISPA] Which WiMAX Are You? > >What part of the 3650 rules make E "not supportable"? > >Tim > >> -----Original Message----- >> From: [email protected] [mailto:[email protected]] >On >> Behalf Of Matt Liotta >> Sent: Wednesday, September 09, 2009 3:47 PM >> To: WISPA General List >> Subject: Re: [WISPA] Which WiMAX Are You? >> >> E is only really useful for mobile and mobile is not supportable with >> the >> current 3650 rules. >> -Matt >> >> On Wed, Sep 9, 2009 at 6:42 PM, Tim Sylvester >> <[email protected]>wrote: >> >> > I would like to see more vendors support 802.16e at 3.65GHz. Also I >> would >> > like to see 802.16e at 3.65GHz supported in a netbook and a USB >> dongle. >> > Does >> > anyone know if the Intel WiMAX chips support 3.65GHz? >> > >> > Tim >> > >> > > -----Original Message----- >> > > From: [email protected] [mailto:wireless- >> [email protected]] On >> > > Behalf Of Matt Liotta >> > > Sent: Wednesday, September 09, 2009 3:34 PM >> > > To: WISPA General List >> > > Subject: Re: [WISPA] Which WiMAX Are You? >> > > >> > > I look forward to seeing everyone at 4G World next week. >> > > Personally, I don't care for D or E in a fixed deployment, but if >> you >> > > nailed >> > > me down I would go with D. WiMAX tries to be too many things for >> too >> > > many >> > > people. WiMAX-based proprietary systems are far more useful for >> fixed >> > > deployments. >> > > >> > > -Matt >> > > >> > > On Wed, Sep 9, 2009 at 5:28 PM, Patrick Leary >> <[email protected]> >> > > wrote: >> > > >> > > > The subject question is one Aperto thinks should be asked and >now >> is >> > > the >> > > > time to ask it. The WiMAX Forum has been beating the 802.16e >drum >> in >> > > a >> > > > manner trying to chump 802.16d. The fact is, there are two WiMAX >> > > > standards, not one. By the Forum's own words from a 2005 paper >it >> put >> > > > out in November 2005, penned by Monica Paoli of Seza Fila: >> > > > >> > > > "The WiMAX Forum is committed to providing optimized solutions >> for >> > > > fixed, nomadic, >> > > > portable and mobile broadband wireless access. Two versions of >> WiMAX >> > > > address the >> > > > demand for these different types of access: >> > > > * 802.16-2004 WiMAX. This is based on the 802.16-2004 version of >> the >> > > > IEEE 802.16 >> > > > standard and on ETSI HiperMAN. It uses Orthogonal Frequency >> Division >> > > > Multiplexing (OFDM) and supports fixed and nomadic access in >Line >> of >> > > > Sight >> > > > (LOS) and Non Line of Sight (NLOS) environments. >> > > > * 802.16e WiMAX. Optimized for dynamic mobile radio channels, >> this >> > > > version is >> > > > based on the 802.16e amendment and provides support for handoffs >> and >> > > > roaming." >> > > > >> > > > It is time the Forum own up to their own words, so Aperto is >> going to >> > > > asking the question at 4G World coming up in Chicago next week. >> The >> > > fact >> > > > is, the fixed standard is stable and ideal for what it was >> designed >> > > to >> > > > do: deliver fixed (and limited nomadicity) wireless broadband. >> This >> > > > version of the standard is better, yes better, than the mobile >> > > version >> > > > for doing metroscale fixed. It provides 13% more capacity per >MHz >> and >> > > > 35% or so less latency. It can also be configured for symmetric >> or >> > > even >> > > > higher ratio upstream vs. downstream, which is critical for >> networks >> > > > doing high capacity upstream like video surveillance. >> > > > >> > > > For too long, vendors that now only do the mobile standard have >> been >> > > > trying to squeeze the round peg of the mobile standard into the >> > > square >> > > > hole of fixed networks. This has been confusing many, and >leading >> > > some >> > > > to overpay for their networks. Why pay for millions in R&D for >> > > features >> > > > that you can never use, especially in a 3.65 GHz network where >> mobile >> > > > can't happen? We have seen "consultants" spec'ing in E for 3.65 >> GHz, >> > > > thinking they will get interoperability and even PC cards for >> their >> > > > networks. They also think they can get self-install -- something >> this >> > > > community knows is not possible in 3.65 GHz due to the power >> > > > restrictions placed on indoor modems. Operators and other would- >> be >> > > WiMAX >> > > > deployers are being hoodwinked. >> > > > >> > > > The E standard does enable use of diversity, but it comes at a >> high >> > > cost >> > > > and is of limited benefit for rural operators. The truth is that >> > > > diversity is designed to increase link budgets to support self- >> > > install. >> > > > >> > > > Basically, each standard has its place, E is for people in 2.5 >> GHz >> > > doing >> > > > self-install, like Clearwire, and we all know the low service >> > > > (especially low upstream) packages offered in Clearwire's >> service. D >> > > is >> > > > better and cheaper for rural fixed operators, and especially for >> > > public >> > > > safety video type networks and definitely for voice-centric >> users. D >> > > is >> > > > better for enterprise, where many users sit behind the CPE. E is >> > > better >> > > > for roaming individual users with modest expectations. >> > > > >> > > > We'd like to hear your opinions, and if you like to discuss this >> with >> > > us >> > > > while at 4G World, please drop me a note. >> > > > >> > > > Regards, >> > > > >> > > > Patrick Leary >> > > > Aperto Networks >> > > > >> > > > >> > > > Patrick Leary >> > > > Aperto Networks >> > > > 813.426.4230 mobile >> > > > >> > > > >> > > > >> > > > ---------------------------------------------------------------- >- >> ---- >> > > ----------- >> > > > WISPA Wants You! 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