Nokia Bell Labs said it had achieved a world first by downloading and uploading data at a rate of 10 Gbps over coax – specifically the hybrid fiber coax infrastructure typically used by cable companies. The achievement was made using XG-CABLE technology during a Nokia Bell Labs proof-of-concept demonstration.
According to Nokia Bell Labs, XG-CABLE can easily integrate into the cable industry’s new full-duplex DOCSIS 3.1 equipment. Traditional cable infrastructure was designed to support higher speeds in the downstream direction, but cable companies increasingly are finding a need for more symmetrical speeds as average upload speeds increase.
Researchers used point-to-point cable network topologies and 1.2 GHz of spectrum in the demo.
XG-CABLE 10 Gbps Over Coax
XG-CABLE is a prototype technology that makes use of innovations and applications Nokia Bell Labs researchers developed. A benefit would be for network operators to avoid the need to extend fiber to the premises, Nokia Bell Labs highlights. Instead operators would be able to use HFC cabling over the last 200 meters. Unlike in the in the past, though, they would be able to deliver unprecedented upstream speeds over that infrastructure.
“The XG-CABLE proof of concept is a great example of our ongoing effort and commitment to provide the cable industry with the latest innovations and technology needed to effectively address the growing demand for gigabit services,” Federico Guillen, Nokia’s president of Fixed Networks, was quoted. ¨The proof of concept demonstrates that providing 10 Gbps symmetrical services over HFC networks is a real possibility for operators; it is an important achievement that will define the future capabilities and ultra-broadband services cable providers are able to deliver.”
Comcast Cable VP of Network Architecture Dr. Robert Howald noted that though development of Full Duplex DOCSIS 3.1 is still at an early stage, the Nokia XG-CABLE successfully proves the concept, demonstrating that it is indeed possible to deliver data at symmetrical multi-gigabit rates over HFC, one of the targets set in CableLabs’ FDX Initiative.
¨As we continue our DOCSIS 3.1 deployments this year, this development further illustrates the power and flexibility of the DOCSIS 3.1 as a tool to deliver next-generation broadband performance,” he stated for the press release
Comcast publicly released its DOCSIS 3.1 roadmap in February, raising pressure on competitors by boosting data rates. Management said DOCSIS 3.1 gigabit broadband would be available in Atlanta and Nashville early in 2016 and in Chicago, Detroit and Miami later in the year