Nokia said it will trot out a demo that will deliver symmetrical 10 Gbps data speeds over HFC plant using a prototype technology called XG-CABLE that is based on unique access tech and apps developed by Nokia Bell Labs.
Nokia said it amounts to a proof-of-concept that shows the feasibility of Full Duplex DOCSIS, an initiative recently undertaken by CableLabs.
The vendor added that the XG-CABLE uses point-to-point cable topologies to deliver 10 Gbps symmetric data speeds over HFC using 1.2 GHz of spectrum, claiming that it can be “easily” integrated into the CableLabs-led concept. Notably, the prototype technology can use existing HFC cables over the last 200 meters to provide loftier upstream speeds that aren’t available using current DOCSIS systems that split the allocation of spectrum used for downstream and upstream capacity.
Nokia said HFC network topologies that utilize a Fiber-to-the-Last-Amplifier (point-to-multipoint coax drop) approach enabled NG-CABLE to deliver 7.5 Gbps of symmetrical data, and, through the use of echo cancelling technologies, can hit full duplex transmission of 10 Gbps in both directions.
"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 Guillén, president of fixed networks, Nokia, said in a statement. “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."
And the demo received some praise from Comcast.
"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,” Dr. Robert Howald, Comcast Cable’s VP of network architecture, added in the Nokia announcement. “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."