>> That one-piece WiFi/WiMAX box? It's probably not a good idea. I read >> that the WiFi tends to kill the sensitivity of the WiMAX backhaul. > > Where did you read it, and which WiMAX band was it refering to? There > are a lot of WiFi/WiMAX gear that has 5.8 mesh backhaul with WiFi for > local access. I would think that if interference were an issue, those > would not be as popular as they are. I would expect that any licensed > WiMAX would avoid that by design. > > -- > Michael Weinberg > President > Personal Telco Project, Inc. --------------------------------------------------
I'm not talking about 5.8 and 2.4. I'm talking about operating on two closer channels (2.4 Ghz and 2.6 GHz) for backhaul and local access. On page 26 & 27 of the flash-based WiMax Digital mag said WiFi could interfere with WiMAX. It was by Intel's own Wireless CTO, Siavash Alamouti. (http://cde.cerosmedia.com/1C470261080749a012.cde) ------------ "The next leap is with a cellular internet," explains Siavash Alamouti, the CTO of Intel's Mobile Wireless Group, the man responsible for developing Intel's wireless silicon. The cellular internet is, of course, 802.16e mobile WiMAX, but why WiMAX? Why wireless, indeed? Not so long ago Intel's idea of ubiquitous internet was fibre to the home. "The business model necessities a low IPR regime [but] the cellular regime is eff ectively controlled by one or two companies. WiMAX IPR is well distributed." With Qualcomm, Ericsson and Nokia taking their cut, Intel could never dominate 3G in the way it has PCs, and so WiMAX is a better way to sell chipsets. Furthermore, there are elements common to wifi and WiMAX (both OFDM-based) Intel can reuse. Consequently the incremental cost of adding WiMAX to a laptop is "less than half the price of 3G," according to Alamouti, who nevertheless acknowledges that adding another radio creates challenges and costs. "They are in close frequencies and when one radio is transmitting it shuts down the other receiver. It is an RF problem of transmit power, a challenge in the placement of antennas," he explains. ----------- I hadn't thought of this. I was planning to buy an Express Card for my mobile router. But maybe it would require special enginnering. However, if WiFi can successfully operate on two 2.4 Ghz channels (for backhaul and local access), I'm sure that would function okay at 2.4/2.6GHz. What I'm now looking for is a USB WiMAX client with external antenna jacks. A long USB cable plugged into directional WiMAX panels - like a Nanostation2 without the radios - is what I have in mind. - Sam (http://www.ubnt.com/products/ns2.php) --~--~---------~--~----~------------~-------~--~----~ The Personal Telco Project - http://www.personaltelco.net/ Donate to PTP: http://www.personaltelco.net/donate Archives: http://news.gmane.org/gmane.network.wireless.portland.general/ Etiquette: http://www.personaltelco.net/index.cgi/MailingListEtiquette List information: http://lists.personaltelco.net To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] -~----------~----~----~----~------~----~------~--~---
