While it may only take you 20 to 25 minutes to download 500MB of data on your highspeed cable, DSL users may soon be able to download the same amount of data but in only 12 seconds. It would take longer to copy the file to disk than it would to download the data. This is all thanks to VDSL2, which allows unprecedented speeds on existing copper lines.
Ericsson announced today that it has performed the world’s first live demonstration of a VDSL2-based technology achieving data transfer rates of more than 0.5Gbps. The Ericsson demonstration achieved data rates of more than 0,5 Gbps over twisted copper pairs using the latest technology for line bonding and crosstalk cancellation for DSL, also known as “vectorized” VDSL2. The technology is suitable for fiber extensions, combining fiber and last-mile copper for backhauling.
With this technology, operators can enhance fiber access deployments with copper access in the last mile and thereby maximize the reuse of existing infrastructure. This means more consumers will be able to enjoy true broadband services such as HDTV and video-on-demand in their homes.
“This demonstration confirms Ericsson’s leadership in broadband access technology and our commitment to the continued research and development of DSL technology to improve operators’ business with new access solutions. It also proves Ericsson’s abilities to provide future mobile backhauling, which will enable quick and cost-effective introduction of Long Term Evolution (LTE) solutions.” said Hakan Eriksson the CTO at Ericsson.
Crosstalk cancellation, also known as vectorized VDSL2, enables extremely high end-to-end transmission rates, improving VDSL2 performance by reducing noise originating from the other copper pairs in the same cable bundle. This increases capacity and reach, boosting the number of customers that can be connected. Vectoring technology also decouples the lines in a cable (from an interference point of view), substantially improving power management, which can reduce power consumption.
Line bonding means bundling several lines into one and assumes that several copper lines are available at the site, which is typically the case. The demonstration showed aggregated rates of above 0.5Gbps at 500m, bonding six lines. Standards for VDSL2 and line bonding are available today, while the standardization of Vectoring is ongoing and is expected by the end of 2009.
If this product will ever make it to the marketplace is the question. We’ve seen many new DSL related technologies that never got off the ground, other than a demonstration within a laboratory. Actually deploying the technology is another story.