Nokia: 10Gbps symmetrical HFC speeds are possible

18 May 2016

Claiming a world-first, Nokia of Finland has demonstrated that it is possible to achieve 10Gbps symmetrical data speeds via traditional Hybrid Fibre Coax (HFC) cable equipment, using a prototype technology called XG-CABLE developed by Nokia Bell Labs.

Nokia’s press release notes that achieving symmetrical (down/upload) ultra-high speed services is a major breakthrough for the cable industry. With the need for high speed uploads growing due to demand for HD video uploads, real-time gaming, live streaming video and virtual or augmented reality, Nokia Bell Labs began exploring the feasibility of delivering symmetrical service over HFC cable plant in 2014. Demonstrating for the first time that the concept is valid and achievable, the XG-CABLE test this month used point-to-point cable topologies to deliver 10Gbps symmetric data speeds over coaxial cable using 1.2GHz of spectrum.

The release continues that whilst still considered a proof of concept, XG-CABLE can easily integrate into the CableLabs new Full Duplex DOSCIS 3.1 concept, which is focused on providing cable operators with technology innovations to transform the industry. By leveraging the XG-CABLE technology, operators can effectively use existing HFC cables over the last 200 metres to provide upstream speeds previously unachievable due to the limited spectrum available. This will enable operators to more effectively bring ultra-broadband services to consumer locations that were not physically or economically viable unless fibre was brought all the way to the residence.

Robert Howald, VP of network architecture at US-based Comcast Cable, added: ‘While it is still early in the development of full duplex, Nokia’s XG Cable proof of concept shows that multi-Gigabit symmetrical speeds over HFC, as targeted in the CableLabs FDX initiative, are achievable. 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.’

Finland, Nokia