CableLabs hints at 5 Gbps Next-Gen Cable

Cable's next major broadband technology platform may throw DOCSIS out the window - but it is envisioned to let operators economically deliver gobs of bandwidth over existing coaxial cable.

CableLabs, the industry's research and development consortium, is in the earliest stages of investigating a new platform for data-over-coax transmission reconceived from the ground up, according to people familiar with the project.

The concept, if it comes to fruition, could let cable operators deliver extremely high speeds downstream, of up to 5 Gigabits per second - or even more.

The new platform potentially represents a major architectural change for existing cable systems. "It's almost a complete relook at how you do data over coax," said a cable-technology executive briefed on the CableLabs project. "If you were to convert all the spectrum in a typical cable system to data you could easily get 5 Gigabits per second."

But there are a number of caveats.

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