Tag: WiFi

[Friday Tech Fun]: Light painting WIFI

For most of us, network engineers, the IT world means anything but art. Still, it seems that out there somebody think Wifi can be use to generate art. And they did a pretty good job.

Timo Arnall, Jørn Knutsen and Einar Sneve Martinussen had this idea to explore the invisible terrain of WiFi networks in urban spaces by light painting signal strength in long-exposure photographs. A four-metre tall measuring rod with 80 points of light reveals cross-sections through WiFi networks using a photographic technique called light-painting.

What they achieve, you can see below:

Immaterials: Light painting WiFi from Timo on Vimeo.

You can find more about this project here:

http://yourban.no/2011/02/22/immaterials-light-painting-wifi/

Posted on by Calin 2

How Bluetooth got as fast as Wi-Fi

bluetoothBluetooth last week stopped being chained to the low-power, low-throughput radio that has been both its strength and its weakness. New code lets Bluetooth applications now run over 802.11g wireless connections in the 2.4GHz, with a throughput jump to 20M to 24Mbps, from 1M to 3Mbps.

We talked to one of the key creators of this bit of wizardy: Kevin Hayes, a technical fellow with Atheros Communications, who has worked in m ore than a dozen task groups around the IEEE 802.11 wireless LAN standard, and in Wi-Fi Alliance projects such as Wi-Fi Protected Access.

Hayes was the technical editor for the 802.11 Protocol Adaption Layer (PAL), one of the big changes in the just-announced Bluetooth 3.0 specification, a two-year project. PAL, together with the 802.11 media access control (MAC) and 802.11 physical (PHY) layers constitute the Alternate MAC/PHY or AMP, enabling a Bluetooth profile (such as file transfer) to run over a Wi-Fi link. It’s the beginning of “Bluetooth everywhere,” according to Network World blogger Craig Mathias.

But make sure you look for the full formal designation: Bluetooth 3.0 + High Speed (or HS). (For some uses, vendors can deploy 3.0 without the ability to use a Wi-Fi connection but they can’t use “high speed” in labeling it).

Read the full article on NetworkWorld.com…

Posted on by Calin 0

WLAN product blitz shows 802.11n getting more affordable, useable

WLANA slew of new WLAN hardware and software suggests that 802.11n high-throughput WLANs are fast becoming more affordable and manageable across all industry segments.

Enterasys debuted its first 802.11n access point and a new high-end WLAN controller for large-scale deployments, while D-Link has a new $180 11n AP aimed at small and midsize businesses. Meraki introduced its first 11n product for municipal and multi-tenant Wi-Fi hot zones.

On the software side, Motorola’s AirDefense unit has added a WLAN troubleshooting application to its flagship wireless intrusion prevention suite, and radio frequency (RF) monitoring and configuration management to its WLAN controller software. Rival AirMagnet has created a version of its RF analysis and site survey applications and introduced a simplified troubleshooting tool, both aimed at improving WLAN performance and management for SMB customers.

Please read the full article on NetworkWorld.com…

Posted on by Calin 0