The next standard for cable broadband is now due by 2020.

For over a year, the cable industry has been stalled after deciding to slash investment in broadband while enduring indecision and confusion over the next generation of cable broadband.

At issue is a simmering disagreement — rare for the usually unified cable industry — about the next generation of cable broadband, dubbed DOCSIS 4.0.

Two sides have emerged. Cable giant Comcast has spent years gradually preparing its network for perhaps the last iteration of coaxial copper-delivered cable internet service. It has spent at least five years gradually pushing optical fiber closer to its customers, retiring additional coaxial cable and the amplifiers and other equipment associated with that technology. The result is a company ready to embrace Full Duplex DOCSIS, known as “FDX.”

FDX is designed to allow upload and download traffic to share the same spectrum, letting cable companies put internet service bandwidth to full use with maximum efficiency. Comcast wants FDX to be a central part of DOCSIS 4.0. The company has been working through a long-term plan to offer much faster internet service, including symmetrical broadband — unified upload and download speeds. This would erase the cable industry’s broadband Achilles’ heel: download speeds much faster than upload speeds.

To achieve FDX, cable companies have to push fiber much deeper into their networks, sometimes right up to the edge of neighborhoods. It also means eliminating signal amplifiers that help keep signals robust as they travel across older coaxial cable infrastructure. Engineers call this concept “Node+0” architecture, which means a network with zero amplifiers.

FDX gives the cable industry the opportunity of running a more robust broadband network, easily capable of 10 Gbps with an upgrade path to 25 Gbps later on. The downside is that it can be very expensive to implement, especially if a cable company has under invested in upgrades and not incrementally laid a foundation for FDX. Wall Street may balk at the upgrade costs. The logistics of readying degrading older infrastructure to launch FDX may be so onerous, some cable systems may find it more cost effective to scrap their existing hybrid fiber-coaxial (HFC) networks and switch to a state-of-the-art fiber to the home network instead. That is precisely what Altice USA is doing with its Cablevision/Optimum system in New York, New Jersey, and Connecticut.

Charter Communications, along with many other smaller cable operators, have been pushing an alternative to FDX that is likely to cost much less to implement. Extended Spectrum DOCSIS (ESD) is designed to work over existing cable systems, including those that still rely on amplifiers and aging coaxial cable. Instead of allowing internet traffic to share bandwidth, ESD follows the existing standard by keeping upload traffic on different frequencies than download traffic. It simply extends the amount of bandwidth open to both types of traffic, which will allow cable systems to raise speeds. ESD will dedicate frequencies up to 3 GHz (and higher in some cases) for internet traffic. DOCSIS 3.1, the current standard, only supports internet traffic on frequencies up to around 1.2 GHz. ESD will also allow cable companies to raise upload speeds and should support up to 10 Gbps downloads. But there are some questions about how well ESD will support 25 Gbps speed and the condition of the cable company’s existing coaxial network will matter a lot more than ever before. A substandard network will cause significant speed degradation and could even disrupt service in some cases.

Despite the limitations of ESD, many cable companies consider its low implementation cost a principal reason to support it over FDX.

For much of this year, cable companies have put upgrades on hold as the industry sorts out which direction DOCSIS 4.0 will take. Equipment manufacturers and vendors have resorted to layoffs and cutbacks and have signaled neither Comcast nor other cable companies are big enough to justify different DOCSIS standards supporting FDX or ESD.

Comcast and Charter are the two largest cable companies in the United States.

Therefore, the cable industry has informally decided DOCSIS 4.0 will need to support both FDX and ESD under a single specification, with next generation cable modems and equipment capable of supporting either technology. At a joint pre-Cable-Tex Expo conference held on Monday, executives from Comcast and Charter appeared to support the new unified approach to DOCSIS 4.0.

John Williams, vice president of outside plant engineering and architecture at Charter Communications, told attendees cable companies need to support both FDX and ESD and stop taking an “either/or” approach.

“In order to do this, we need to look at the synergies and embrace ESD and FDX as the next generation of HFC,” Williams said. “It’s all about scale.”

Charter has been significantly challenged historically because its own legacy cable systems were often behind the times and sometimes dilapidated. Its 2016 acquisition of Time Warner Cable and Bright House Networks only complicated things further, because neither operator had a reputation for using state-of-the-art HFC technology. Costly upgrades have been underway at many Charter-owned cable systems since the merger closed, some still ongoing.

Robert Howald, part of Comcast’s network upgrade team, called the emerging DOCSIS 4.0 standard a “perfect complementary pair” of FDC and ESD. He noted both approaches will allow cable systems to boost speeds to at least 10/10 Gbps, with faster speeds in the future.

Howald pointed out Comcast is already testing FDX technology in Connecticut and Colorado, working out bugs and unexpected technical challenges.

“We feel like we’ve significantly de-risked some of the technology components of FDX,” Howald said. “We felt really good about what we saw in the field.”

What is Full Duplex DOCSIS? This video from CableLabs explains the technology and how it differs from other DOCSIS cable broadband technology. (1:58)

A major battle between satellite owners, broadcasters, and the telecom industry has emerged over a proposal to repurpose a portion of C Band satellite spectrum for use by the wireless industry.

Multiple proposals from the wireless and cable industry to raid C Band satellite frequencies for the use of future 5G wireless networks suggest carving up a band that has been used for decades to distribute radio and television programming.

Before the advent of Dish Networks and DirecTV, homeowners placed 6-12′ large rotatable satellite dishes in backyards across rural America to access more than a dozen C Band satellites delivering radio and television programming. Although most consumers have switched to much smaller fixed satellite dishes associated with Dish or DirecTV, broadcasters and cable companies have mostly kept their C Band dishes to reliably receive programming for rebroadcast.

Now the wireless industry is hoping to poach a significant amount of frequencies in the C Band allocation of 3.7-4.2 GHz to use for 5G wireless service. Competing plans vary on exactly how much of the satellite band would be carved out. One plan proposed by Charter Communications and some independent cable companies would take 370 megahertz from the 500 megahertz now used by C Band satellites and sell it off in at least one FCC-managed auction to the wireless industry. A more modest plan by an alliance of satellite owners would give up 200 megahertz of the band, allowing wireless companies to acquire 180 megahertz of spectrum. To reduce the potential of interference, both major plans offer to set aside 20 megahertz to be used as a “guard band” to separate satellite signals from 5G wireless transmissions.

Satellite dish outside of KTVB-TV in Boise, Ida. (Image courtesy: KTVB-TV)

Much like the FCC’s repack of the UHF TV dial, which is forcing many stations to relocate to a much smaller number of available UHF TV channels, most proposals call on the FCC to subsidize dislocated satellite broadcasters and users with some of the auction proceeds to help pay the costs to switch to fiber optic terrestrial distribution instead.

Broadcasters and satellite companies claim the cable industry proposal would leave U.S. satellite users drastically short of the minimum 300 megahertz of satellite spectrum required to provide radio and television stations with network programming. Many rural broadcasters have complained that the cable industry plan calling for a shift to fiber optic distribution ignores the fact that there is no fiber service available in many areas. Other objectors claim fiber outages are much more common than disruptions to satellite signals, putting viewers at risk of a much greater chance of programming disruptions.

With spectrum valued at more than $8 billion at stake, various industry groups are organized into coalitions and alliances to either support or fight the proposals. The Trump Administration has made it known it is putting a high priority on facilitating the development of 5G services to beat the Chinese wireless industry, which is already moving forward on a major deployment of next generation wireless networks. The FCC, with a 3-2 Republican majority, has signaled it is open to reallocating spectrum to wireless carriers for the rollout of 5G service. Unfortunately, much of this spectrum is already in use, setting up battles between incumbent users threatened to be displaced and the wireless industry, which sees big profits from acquiring and deploying more spectrum.

With serious money at stake, strains are emerging among some individual members of the different industry groups. Late last week, Paris-based Eutelsat Communications quit the largest satellite owner coalition, the C-Band Alliance. The move fractured unity among the world’s satellite owners, just as the FCC seems ready to move on a reallocation plan. Eutelsat will now lobby the FCC directly, reportedly because of concerns among shareholders that splitting off significant amounts of C Band spectrum is inevitable and could drastically reduce the value of Eutelsat’s share price. Eutelsat reportedly wants to independently participate in the FCC’s proceeding, potentially securing a larger amount of compensation from the FCC for the spectrum it will give up as part of a final reallocation plan.

Whatever compensation plan emerges will run into the billions of dollars. Satellite dishes will probably require new equipment to shield signals from interference, may require re-pointing to a different satellite (which could prove problematic for some equipment originally installed in the 1980s), and may even require the launch of additional satellites to provide more capacity in the newly slimmed C Band.

The FCC is expected to decide on the reallocation proposals this fall, with a signal repack likely to take between 18-36 months before the frequencies can be cleared for use by wireless operators.

Satellite owners, mobile carriers, and cable operators discuss reallocating part of the satellite C Band for use by 5G wireless networks. Sponsored by the industry-funded Technology Policy Institute. Sept. 3, 2019 (44:10)

Despite assurances from FCC Chairman Ajit Pai that the repeal of net neutrality would inspire cable operators to increase investment in broadband, a year-long virtual spending freeze by the nation’s top cable operators has resulted in a major vendor pulling out of the next generation cable broadband standard until there are signs cable companies are prepared to spend money on upgrades again.

Cisco Systems has confirmed to Light Reading it has ceased investment in Full Duplex DOCSIS technology that would allow cable customers to get the same upload speed as download speed.

“Cisco has internally communicated that we are suspending further investment in Full Duplex DOCSIS (FDX) until the market timing, ecosystem development and size of the opportunity can be quantified,” a Cisco spokesperson said in a statement to Light Reading.

The news is a significant blow to the cable industry’s plans to upgrade to 10 Gbps capacity and a growing desire by customers to get much faster upload speeds than are currently available.

Cisco blamed its pullback on the cable industry’s lack of investment in broadband upgrades and an uncertain timetable when major cable companies including Comcast, Charter, Cox, and others will announce specific plans for future upgrades.

FDX has already been the victim of delays. Originally planned as an incremental upgrade for DOCSIS 3.1, FDX is now scheduled to be included in CableLabs’ DOCSIS 4.0 specification, which is not expected to be released for a few years. FDX will be one of several new features incorporated into the next cable broadband standard, which will allow for low latency connections and an expanded amount of coaxial cable spectrum that can be devoted to broadband services.

The cable industry has been taking a sober look at the costs associated with adopting FDX, which includes scrapping a significant amount of coaxial cable and pushing fiber optic technology much closer to customers. Cable systems that want to move towards FDX will have to remove amplifiers that maintain signal strength between the fiber optic connection and the coaxial cable entering customers’ homes. In some cases, this will mean removing multiple amps from the cable system and stringing new fiber optic cables deep into neighborhoods. This is known as node+0 architecture. Moving towards node+0 is expected to be both costly and labor intensive, and some large cable systems and investors are balking.

“There are a lot of operators who have no intention of getting to a node+0 environment in next 10 years,” Tom Cloonan, chief technical officer of Arris’ Networks Solutions unit, told Multichannel News last fall. “It’s going to take a while to run fiber deep enough to get to node+0.”

To date, the only major cable operator that has definitively backed moving to node+0 is Comcast. Other cable companies, notably Cox Communications, are seeking a much cheaper solution to manage upgrades.

Extended Spectrum DOCSIS (ESD)
Image courtesy of: Huawei

An emerging alternative concept has emerged that can be implemented at a lower cost. Extended Spectrum DOCSIS (ESD) would essentially repurpose much of the bandwidth available over a coaxial cable solely to broadband service. DOCSIS 3.1 currently dedicates 1.2 GHz of spectrum for broadband. FDX would increase that to more than 1.8 GHz. ESD would devote as much as 3 (or possibly 6) GHz of spectrum for data transmissions. The cable system would devote as much as half of that spectrum for downstream traffic, the other half for upstream. Theoretical speeds in the future could be as high as 60 Gbps, and ESD will not require cable systems to ditch existing amplifiers. It will, however, force some cable systems to evaluate and replace at least part of their older coaxial cable network. ESD will be less forgiving of deteriorating cable than DOCSIS 3.1 is.

Unfortunately for Cisco, and other cable broadband equipment suppliers, ESD is still more theory than fact, and with cable operators demonstrating they are in no rush to move to either FDX or ESD, it will likely be several years before either technology becomes available to customers. Cloonan predicts ESD will not be implemented by cable systems until the mid-2020s.

The muddy waters over where the cable industry will ultimately plant the flag on next generation broadband upgrades means a lot of uncertainty for companies like Cisco, which has resulted in the company pulling out of developing FDX until there are assurances the cable industry has a timetable to implement it. The decision has also cost several Cisco employees their jobs. Multiple industry sources told Light Reading job cuts included 5-7 engineers dedicated to FDX, and some sources also report at least 40 employees in the cable access division of Cisco have also been let go.

If certainty does not return to the cable broadband market soon, Cisco could ultimately jettison much of its cable broadband technology division to focus on other technology growth areas.

The cable industry’s investment freeze is ironic because the Trump Administration’s FCC trumpeted its decision to repeal net neutrality, claiming it would inspire cable operators to accelerate investment in network upgrades. It appears the exact opposite has occurred.

Despite claims from Republican FCC commissioners that cable companies are boosting investment in their networks as a result of the FCC’s repeal of net neutrality, cable infrastructure suppliers reported first quarter 2019 revenues nosedived 38%, reflecting an “extreme” cutback in cable industry spending not seen in over five years.

ARRIS/CommScope and Casa Systems, two major suppliers of cable system infrastructure, saw a broad decline in orders starting this year as companies like Comcast and Charter Communications slashed investment in broadband upgrades. Executives at both cable companies informed investors they expected significant spending cutbacks after completing their DOCSIS 3.1 upgrades, which have made gigabit download speeds available in large portions of the country. Comcast and Charter executives also told investors that large-scale spending is not planned in the near future.

The spending cuts were acknowledged by CommScope CEO Eddie Edwards in a conference call with investors.

“The ARRIS business is off to a challenging start to the year, driven largely by the significant reduction in CapEx spend by certain large cable companies, many of whom have commented publicly on 2019 network and capital priorities,” Edwards said.

The nation’s top two cable operators spent $1.1 billion in the third quarter and $1.4 billion in the fourth quarter of 2018 on system upgrades and investments. But during the first quarter of this year, spending plummeted to $600 million. Jeff Heynen, Dell’Oro’s research director, told Light Reading he has not seen revenues in the cable access network sector drop to such a low level since 2013.

“We’re talking about a significant decline sequentially just for CapEx for two of the largest cable operators in the world,” Heynen told the trade journal. “But this isn’t just one or two operators cutting their CapEx. It’s quite a few of them, and the big ones, too. This was bound to have a significant impact on the infrastructure market.”

Analysts expect cable industry spending will remain sluggish for much of 2019, with a possible turnaround sometime late this year, but more likely in 2020.

Altice USA could be your next cell phone provider, if you subscribe to Cablevision’s broadband service in the metro New York City area.

The Wall Street Journal reports Altice is preparing to launch an unlimited calling/texting/data plan that will cost between $20-30 per month, powered by Cablevision’s in-home Wi-Fi, its network of public Wi-Fi hotspots, and Sprint’s 4G LTE network.

The service, likely to be called Altice Mobile, is the latest entry from cable operators pitching low cost mobile service as an incentive to keep customers from switching providers. Altice will charge dramatically less for its unlimited plan than Xfinity Mobile and Spectrum Mobile ($45) — both reselling Verizon Wireless service — (with speeds reduced to 1 Mbps download and 512 kbps upload after 20 GB of data usage in a month.)

Customers using AT&T and Verizon pay even more. Unlimited monthly plans for a single phone start at $80 at Verizon and $70 at AT&T, depending on bundling certain other AT&T-owned services. For less than half the price, Altice Mobile would deliver all the same services larger providers offer, although Altice intends to offload as much usage as possible to its network of Wi-Fi hotspots, to keep costs low. Before Altice acquired the cable company, Cablevision built a major Wi-Fi presence in the New York City metro areas where it provides cable service. Altice announced it intends to strengthen that network to support its mobile initiative, including the possibility of deploying its own small cell network.

Where Altice cannot supply its own wireless connection, it will rely on Sprint to take over, paying the cell phone company for its customers’ traffic. In return, Sprint will be able to bolster its network in Altice’s service area, perhaps even using Altice’s fiber-to-the-home network, now under construction. That could help Sprint launch 5G service relatively soon in the region, regardless of whether its pending merger with T-Mobile USA is approved. To protect the venture, Altice has secured an agreement with both T-Mobile and Sprint not to terminate its contractual agreement with Sprint should a merger be approved. But the service will still be dependent on network owners like Sprint willing to sell connectivity. Should Altice Mobile take a significant share of the market, network owners may be reluctant to renew such contracts, or price them much higher at renewal time, raising prices.

The cable industry’s incentive for getting into the wireless business, even if it proves unprofitable, is plain to see. All entrants require their mobile customers to maintain a broadband account in good standing to qualify for mobile service. Comcast, Charter, and Altice are aware their video packages are increasingly untenable in a cord-cutter’s marketplace, but maintaining internet service remains essential. In most areas where the cable operators provide service, Verizon or AT&T also sells both broadband and wireless service. Customers may be reluctant to bounce between providers looking for a better deal if they also have to switch mobile providers at the same time.