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Appeared on: Thursday, November 15, 2012
Researchers Boost WiFi Performance 700 Percent

Researchers have developed a new software program, called WiFox, which can be incorporated into existing networks and expedites data traffic in large audience WiFi environments.

WiFi traffic gets slowed down in high-population environments because computer users and the WiFi access point they are connected to have to send data back and forth via a single channel.

Created by researchers at North Carolina State University, WiFox monitors the amount of traffic on a WiFi channel and grants an access point priority to send its data when it detects that the access point is developing a backlog of data. The amount of priority the access point is given depends on the size of the backlog ? the longer the backlog, the higher the priority. In effect, the program acts like a traffic cop, keeping the data traffic moving smoothly in both directions.

The research team tested the program on a real WiFi system in their lab, which can handle up to 45 users. They found that the more users on the system, the more the new program improved data throughput performance. Improvements ranged from 400 percent with approximately 25 users to 700 percent when there were around 45 users.

This translates to the WiFi system being able to respond to user requests an average of four times faster than a WiFi network that does not use WiFox.

"One of the nice things about this mechanism is that it can be packaged as a software update that can be incorporated into existing WiFi networks,' says Arpit Gupta, a Ph.D. student in computer science at NC State and lead author of a paper describing the work. "WiFox can be incorporated without overhauling a system."


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