Microtelecom For The Next Billion Mobile Users. Médias & Publicité : Les mobiles du futur perturbent la télévision. Une expérimentation menée sur la 4ème génération de téléphonie mobile montre que les fréquences utilisées brouillent la réception de la télévision.
Téléphoner ou regarder la télévision, faudra-t-il bientôt choisir ? C'est le problème auquel risque d'être confronté le gouvernement. Ce dernier a l'intention de mettre bientôt aux enchères les fréquences de téléphone mobile 4G. Il espère en retirer deux milliards d'euros. Mais les premiers tests menés sur ces fréquences ont donné un résultat très étonnant. Orange, SFR et Bouygues Telecom, qui ont mené une expérimentation en Mayenne près de Laval avec le diffuseur technique TDF, en ont fait l'amère expérience.
Difficile de savoir combien de Français pourraient être concernés. Pire dans les villes ? Après cette première expérimentation en zone rurale, les opérateurs redoutent que la perturbation de la télévision ne soit encore pire au cœur des villes. Ce problème technique embarrasse les autorités publiques. 70-90% of AT&T Spectrum Capacity Unused. Annual WiFi Report 2010. HotelChatter Annual WiFi Report 2010 :: Best :: Worst :: International :: FAQ :: Chart The famed Algonquin Hotel in New York offers free WiFi to guests with an access code, which is typically the name of the housecat, Matilda.
Best Hotel WiFi 2010. 4G mobile broadband can’t compare with netBlazr’s fixed service - netBlazr. Several people have asked me “Won’t 4G mobile broadband services solve the broadband problem?”
Hardly! Despite President Obama’s support for widespread 4G mobile broadband coverage, there is no way 4G mobile technologies (like LTE and WiMAX) will provide the kinds of capacity we need to keep the US competitive with the rest of the world. 2G, 3G, 4G, and everything in between: an Engadget wireless primer. It's hard to believe nowadays, but in a simpler time, cellphones really were called "cell phones," not dumbphones, smartphones, feature phones, or superphones.
They bulged in your pocket -- if they fit in your pocket at all, that is -- and they made calls. That's it. None of this social networking, messaging, browsing, Instagramming, Flash 10.1 nonsense. How AT&T is using small antennas to fix big problems. If all goes according to AT&T’s wishes, the city of Palo Alto may soon become the premier testing spot for Ma Bell’s plan to boost its cellular network power by installing a large number of small cellular antennas around town.
Bandwidth. Mobile Data Usage Explodes. I picked up on an article over at ArsTechnica which references a Cisco report on mobile data usage ( World Mobile Data Traffic to Explode By Factor of 26 by 2015 ). The Cisco report itself ( cisco.com [pdf] ) has a lot of interesting data and predictions in it. The ArsTechnica article focused mainly on the growth of data traffic in general; I want to talk about something else I found interesting – user profiles. The executive summary is this: Mobile video traffic will exceed 50 percent for the first time in 2011. LTE may interfere with cable TV. According to a new report, LTE handsets will interfere with cable TV if used within six metres of a set top box.
Powerful LTE devices seems to be on a collision course with existing tv and broadband connections This report provides the analysis of the interference to Cable Networks from the deployment of Electronic Communications Services in the 790-862 MHz band. The research is undertaken by Excentis and is in line with a concerted European effort to assess ongoing risks associated with interference. The report states that The primary source of interference will most likely be the TS (terminal station). The Pipe » Dutch Test Shows LTE-Cable TV Interference. Agency Agentschap Telecom (AT), LTE phones operating at commonly used LTE bandwidths of 5-10MHz create interference on digital cable-connected TVs. In the test, which involved only 15 measurement, 11 at standard settings and 4 more with the TV connections optimized to reduce interference, an LTE mobile device used 3m (9 feet) from a cable-fed television set resulted in disturbance for the cable TV signal in 75 percent of cases, and the cable signal of more distant sets was affected 50 percent of the time.
The standard set up tests used a digital cable installation with a well-protected (StAI) cabling for the connection between the TV and the cable TV drop, but no adjustments to the connections or protection of other cabling. 4G network 'will create GPS dead zones across the US' - tech - 22 February 2011. WHAT would you rather have - a superfast data connection on your cellphone, or a reliable GPS signal to pinpoint your location?
If a plan to install a network of base stations for the new 4G mobile wireless protocol goes ahead, it may mean you can have one but not the other. GPS satellites transmit their navigation signals in the range 1559 to 1610 megahertz. Telecoms firm LightSquared of Reston, Virginia, has long communicated with its satellites using low-power signals in the adjacent frequency band, from 1525 to 1559 MHz, part of the "L band". Despite the closeness of the frequencies, satnav receivers have so far operated without any interference problems. But in January, the US Federal Communications Commission (FCC) gave preliminary approval to a plan by LightSquared to build 40,000 new 4G base stations on the ground. Jeff Carlisle of LightSquared says it is the GPS receivers, not his company's base stations, that are at fault. The stakes are high. Beamforming: The Best WiFi You’ve Never Seen : Open-Mouthed Amazement.
You should have seen my wife’s face when she found me glued to the Victoria’s Secret Fashion Show.
