Im 802.16c, C as in Canopy Ducking....!!!
Hello Patrick! Gino A. Villarini [email protected] Aeronet Wireless Broadband Corp. tel 787.273.4143 fax 787.273.4145 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Patrick Leary Sent: Wednesday, September 09, 2009 5:28 PM To: WISPA General List Subject: [WISPA] Which WiMAX Are You? 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! Join today! http://signup.wispa.org/ ------------------------------------------------------------------------ -------- WISPA Wireless List: [email protected] 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: [email protected] Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
