Mobile

Blog archive
Math equation

Bigger bandwidth with just algebra

I’m sure many of us, at one point or another during our mathematics education, thought, “What good can this possibly do me in the real world?” I know I did. I considered taking a class in multivariable calculus one semester, but then decided it was beyond what I’d ever need as a basic computer science major. In fact, probably all of the calculus I’d taken up to that point wasn’t necessary for my eventual career path, but I actually had considered it fun at times. Yeah, I’m a nerd, so sue me.

Apparently researchers at universities all over the world, led by the Research Laboratory of Electronics at the Massachusetts Institute of Technology, are trying to prove just how practical an application of mathematics can be. They have been concentrating on relieving a bottleneck that exists in every data network – what to do with lost information packets.

And they are using algebra to do it, according to MIT Technology Review. A typical wireless network can drop about 2 percent to 3 percent of its packets on average. In an environment such as a fast-moving train, the drop rate can go higher. But even a 2 percent rate is a bigger problem than it sounds. That’s because when a packet is dropped, the sending and receiving stations have to start a conversation about what was dropped and how to recover it. Usually the receiver ends up asking the sender to re-send the package. That extra traffic can result in quite a drag on transfer times.

The process prompted MIT scientists to come up with what they termed “coded TCP.” Instead of information packets, the sending station sends algebraic equations that describe the information. So if one packet goes missing, the receiver has a good chance of being able to reassemble the data without having to bother the sender for another copy.

In lab studies, researchers produced a 1,500 percent increase in bandwidth using this method. Whether this level of benefit will come out in full-scale development remains to be seen. Several companies have licensed the basic technology, Technology Review reported, though non-disclosure agreements have kept the details private.

But with an already tight spectrum that is getting more crowded by the year as public-sector agencies and other organizations add to their wireless, mobile networks, every little bit will help. And this algebraic approach could turn out to add more than a little bit.

Posted by Greg Crowe on Oct 31, 2012 at 9:39 AM


Featured

  • Telecommunications
    Stock photo ID: 658810513 By asharkyu

    GSA extends EIS deadline to 2023

    Agencies are getting up to three more years on existing telecom contracts before having to shift to the $50 billion Enterprise Infrastructure Solutions vehicle.

  • Workforce
    Shutterstock image ID: 569172169 By Zenzen

    OMB looks to retrain feds to fill cyber needs

    The federal government is taking steps to fill high-demand, skills-gap positions in tech by retraining employees already working within agencies without a cyber or IT background.

  • Acquisition
    GSA Headquarters (Photo by Rena Schild/Shutterstock)

    GSA to consolidate multiple award schedules

    The General Services Administration plans to consolidate dozens of its buying schedules across product areas including IT and services to reduce duplication.

Stay Connected

Sign up for our newsletter.

I agree to this site's Privacy Policy.