On Tue, Dec 29, 2009 at 7:28 PM, Michael Baird <[email protected]> wrote: > Patrick, > > 16e is where the majority of the chipset development is at, and where > companies such as Alcatel/Cisco/Motorola/Alvarion/Zyxel are focusing, > and the new big deployments (Clearwire) are using 802.16e, and we want > the ability to go to 802.16m when available. We also want to take
802.16m will be almost as apart from 16e as 16e is from a 16d on a radio stand-point; network-wise 16m will follow 16e pretty close, but that is only unfortunate as 16e requires more of a cellular structure (BTS, BSC, so forth) which is not a WISP usually wants. > advantage of the multipath enviroment utilizing mimo and wave 2 > profiles. We have more hope of interoperability with 16e (Alvarion > states such things with it's open initiative) then we do with 16d, > although that isn't something we are counting on. I've heard too many promises from Alvarion to believe any of them. My previous employer is still waiting for some features and certifications on the BreezeMAX 16d gear they bought. > Patrick, I realize you used to work for Alvarion, and now Aperto but you > used to evangelize 802.16e and now you evangelize 802.16d, to us 802.16d > is going to be the lesser of the two technologies and offers little > advantage over our current wifi deployments, as we move to integrate WiMAX has significant advantages in channel access method compared to Wi-Fi. Proprietary gear like Alvarion VL, Aperto PacketWave and Motorola Canopy has the same advantages and one can hope that Mikrotik Nstreme and Ubiquiti AirMax evolve enough to achieve such a good pps performance, but that is not the situation right now. Regarding NLOS, I've found that the OFDM symbol proportion used in WiMAX also gives better NLOS performance than Wi-Fi. May be one day a new Atheros chipset may come by with such a feature... > voice into our wireless deployments and replace some of our wireline > infrastructure and make a large investment in gear we want to be as > future proof as possible. Managing voice and data is mainly a channel access issue (QoS in marketing lingo), and 2nd a pps (packets per second) issue, both not what Wi-Fi does best. Personally I would convert more wireless to wireline than the other way around... Rubens -------------------------------------------------------------------------------- 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/
