Howard will be on hand June 10 at the International Breakfast at the ANGA COM Exhibition and Congress in Cologne, Germany, to shed more light on the issue.*As an Amazon Associate we may earn from qualifying purchases when you buy through links on our site.Ĭutting the cord often means swapping convenience for a lower telecom bill. "Arguments about complexity for the installer and the homeowner will go away over time," Howard said. Howard doesn't expect to see this in the first DOCSIS 3.1 hardware releases, but recommends gateways with two connectors as a long-term solution. This would allow both technologies to use their respective full frequency bands. The eventual solution could be DOCSIS 3.1 hardware that has two F-connectors - one for the drop line coming into the home and one for the in-home MoCA network. What is the best tradeoff: reducing slightly the capacity of the home network or the access network into the home?" Howard said. you are taking speed from MoCA and giving it to DOCSIS 3.1 and vice versa. For example, how much of a guard band is needed between the utilized frequencies to avoid interference by the stronger signal? Which frequency is better suited to MoCA and which to DOCSIS 3.1? "(And) when you limit the frequencies either uses, you are limiting the total capacity. But this idea, as well as the designation of specific frequencies for each technology, leads to more questions. "It's not what you expect from those guys, but if you think of the cost of truck rolls and the potential loss of a customer from bad experience, it is much better for (operators) if they can (have control) to fix things."Īnother option being considered as a solution to the DOCSIS 3.1/MoCA frequency overlap is the use of filters in the network. "More cable operators are discouraging customers from using their own (hardware, etc.) and encouraging them to acquire (devices) from cable operators specifically," Howard said. This poses an interesting question operators are increasingly facing as they balance the cost and benefits from consumer-purchased devices with control over the customer experience. "The cable operator might have to offer the subscriber a cable-authorized box." "The challenge here is if people buy off-the-shelf MoCA-related devices and hook them into the network, they might not be immediately visible," Howard said. One solution, as Howard noted, would be for software to direct cable modems or set-tops toward specific channels for MoCA. MoCA recently published a document analyzing coexistence requirements, and the SCTE Special Working Group on HFC Readiness for DOCSIS 3.1 (led by Dean Stoneback, senior director of the SCTE) plans to release a document suggesting operational practices some time this fall. "This means you can't use (both) on the same piece of coax inside the home, unless you use a filter or manage frequencies so they don't overlap with one another," said Daniel Howard, SCTE Fellow. Both of these scenarios would mean an overlap with frequencies MoCA uses. However, with DOCSIS 3.1 there is talk of extending to 1,218 MHz and possibly even to 1,794 MHz. When MoCA was first introduced, it utilized frequencies between 1,125 MHz to 1,675 MHz, which were far above the cable spectrum at the time. For example, there are frequency overlap issues between DOCSIS 3.1 and MoCA (Multimedia over Coax Alliance) protocols, which use existing coax for in-home networking. These delights, however, are being served alongside a host of challenges and complex puzzles that need to be solved in order to ensure a positive customer experience. DOCSIS 3.1 is expected bring many things to the cable operator's table, including increased capacity and more robust modulation.
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