Columns are written by leading experts in the Wi-Fi industry.
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Written by Jim Geier
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Saturday, 15 September 2007 |
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I just read an article explaining how a school system in Wales might bane the use of Wi-Fi networks in schools because of potential health risks. The radiation of a Wi-Fi device is extremely low, and there’s no evidence that it causes any health risks. There are many other environmental factors that pose much more harm. For example, cell phones transmit at much higher RF signal levels and are used much closer to the body as compared to Wi-Fi. As a result, cell phones offer substantially higher doses of radiation to our bodies than Wi-Fi. What do you think? Should we ban the use of Wi-Fi around children in schools?
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Written by Jim Geier
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Monday, 27 August 2007 |
Wi-Fi hasn’t had a competitor since the days of HiperLAN, which was a relatively good wireless LAN technology that lost the fight against 802.11-standardized product proliferation a few years ago. For some time, Wi-Fi also won a bout against Bluetooth, which clearly fits now as a wireless PAN technology, not wireless LAN. Mobile WiMAX, however, is offering some new competition to WiMAX.
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Written by Jim Geier
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Wednesday, 22 August 2007 |
Municipalities worldwide have either installed or are in the process of deploying Wi-Fi mesh networks. The user interface of a mesh network is standard Wi-Fi, but the interconnections between mesh nodes are proprietary. This limits the deployment of mesh networks in a particular area to a single vendor. 802.11s, however, should help make these networks more interoperable. With strong benefits of a municipality acquiring mesh nodes from a single vendor anyway, is 802.11s really worthwhile?
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Written by Jim Geier
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Thursday, 19 July 2007 |
 There’s been lots of buzz in the wireless industry about implementing voice over Wi-Fi applications. We’ve all seen the market predictions, but market forecasts are only predictions based on what people think today, and they’ve been wrong before. In the early 1990s I remember seeing numerous reports claiming that wireless LANs would replace wired networks by the mid-1990s. Of course that didn’t happen.
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Written by Chris Roeckl
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Thursday, 07 June 2007 |
 Voice over Wireless LAN (also known as VoWLAN or VoFi) is currently one of the hottest topics among CIOs and enterprise technology professionals. This shouldn’t be surprising given that VoFi straddles two of the most successful technology trends of the past several years - the rise of 802.11 based wireless LANs and voice-over-IP (VoIP). However, VoFi isn’t simply riding the coat tails of its forbears. Wireless voice deployments are surging because VoFi is able to resolve real problems more effectively, and at a lower cost, than those options being used today.
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