Verizon reported a successful trial of next-generation passive optical networking NG-PON2 technology using the carrier’s OpenOMCI specification. The OpenOMCI specification is aligned with ITU-T Recommendation G.989.3, but there are different versions from several carriers.
It’s important to note that this is Verizon’s own version of the OpenOMCI spec. Verizon, along with ADTRAN, Broadcom, Cortina Access, Ericsson/Calix and Intel, worked together to develop the OpenOMCI specification that led to the successful trial. The specification defines the OLT-to-ONT interface and is aligned with the ITU-T Recommendation G.989.3. Since the initial NG-PON2 trial by Verizon in December 2016 , these companies intend to make their hardware and software compliant and are actively contributing to the OpenOMCI specification.
AT&T also published an OpenOMCI specification just a few weeks ago, based on ITU-T G.988 Managed Entities. AT&T intends to deploy an XGS-PON architecture as part of the overall FTTP solution for its Lightspeed service, hence its OpenOMCI spec differs from Verizon’s FiOS-based one. XGS-PON is championed by Nokia (who is not part of Verizon’s vendor group) and also delivers 10Gbit/s to customers.
The trial at Verizon’s technology center in Waltham, MA involved optical network terminal management and provisioning.
By outlining the tools necessary to model a multi-wavelength PON, Verizon says the OpenOMCI specification optimises the number of managed entities and methods that can be used to implement a particular service function while disallowing vendor-proprietary objects and features that have provided a major obstacle for interoperability efforts until now. The OpenOMCI also includes specific managed entities that, in Verizon’s opinion, improve the stability of PON systems. With today’s PON deployments, telcos are obliged to use the same vendor for both optical line terminals (OLT) and optical network terminals (ONT) which prevents multi-vendor interoperability.
“The NG-PON2 interoperability effort is important, not only for Verizon but for NG-PON2 technology, and is based on lessons learned over the last 13 years of PON deployment and great partnerships,” said Vincent O’Byrne, PhD and director of technology at Verizon. “We see this work as removing a major roadblock and helping accelerate NG-PON2 deployment.”
O’Byrne told FierceTelecom that the OpenOMCI specification will help to ensure the company can deploy an array of OLTs and ONTs in its network. He said:
“Since October 2016 we have been working with the vendors on enabling interoperability to mix and match one vendor’s OLT with another vendor’s ONTs, which is an object we have had since we started deploying BPON in 2004. “We have been working with these vendors and have developed OpenOMCI communications between the OLT and the ONT and how that issue is handled for NG-PON2.”
Along with ONT management and provisioning, the trial investigated transmission convergence layer features that allow support of not only business and residential traffic but wireless transport services. These features are a unique addition to NG-PON2 compared to other PON systems.
“We continuously sought the various contributors’ feedback and constructive input,” said Denis Khotimsky , Distinguished Member of the Technical Staff and Verizon’s lead engineer for the trial. “NG-PON2 technology creates specific challenges for the management layer to handle, such as multi-wavelength operations, pluggable optics and multiple interface enhancements. The Verizon OpenOMCI specification meets those challenges.”
Representatives of several telcos interested in the NG-PON2 technology – including Deutsche Telekom, SK Telecom and Vodafone – participated in the trial as virtual observers, which gave them access to the specification, test plans and readouts.
Following the successful completion of the trial, Verizon shared its OpenOMCI specification with the industry for possible inclusion within the appropriate standards. A copy of Verizon OpenOMCI specification can be found here.
Addendum: On July 18th, Fierce Telecom reported: 5G backhaul spending to reach $2B by 2022, NG-PON2 to dominate
“The technology that will dominate 5G backhaul will be NG-PON2,” CIR stated. “By 2022, more than $890 million will be spent on this technology for 5G backhaul.”
The analyst firm noted that Verizon has selected NG-PON2 for 5G backhaul. Top vendors, including Cisco, Nokia, Huawei, Calix, Adtran, Ericsson and Alcatel-Lucent all have PON solutions for 5G backhaul.
NG-PON2 should remain the most popular technological choice, provided prices come down as expected, based on the development of less costly tunable components, CIR said. Most of the suppliers of those components will be based in China, the firm expects.
CIR also calculated that more than 170,000 fiber miles (280,000 kilometers) of cable is expected to be shipped for 5G backhaul applications in 2022, with major fiber and cable suppliers such as Corning already showing signs of specifically targeting 5G infrastructure with their products.
The firm also noted that the introduction of high-speed wireless may have the side effect of reducing the need for fiber to the premise/home (FTTP/FTTH).
There will be some short-term uncertainty until 5G standards are finally ratified, but CIR concluded that “5G is potentially a massive opportunity for the fiber optics industry, with this taken to include opportunities for the makers of modules and components as well as the fiber/cable manufacturers themselves.”
Verizon Communications’ recent surge in buying fiber assets has little to do with its FiOS video and broadband Internet access. Yet the company expects to benefit from the investments, Senior Vice President Kyle Malady said at the Fiber Connect conference this week. He said Verizon is doubling down on fiber to fuel 5G network builds. His presentation can be viewed here.
“All the cards are lining up for us to double down on fiber again,” Malady said during his June 13th keynote address at the conference. Malady said balancing CAPEX requirements in a world of 4G, pending 5G, and other key network initiatives may have given the appearance that Verizon was scaling back on fiber investments. But that has now changed and you can thank wireless backhaul for it.
“Fiber is basically the nervous system of the networks of the future,” Malady said and Verizon is making big investments in it. He cited recent announcements with Corning and other fiber suppliers that Malady said has the carrier buying enough fiber to string to “Mars and back.”
This doubling-down in fiber is not driven by expanding FiOS. It’s driven by the need to densify Verizon’s network for 5G. FTTP applications will be a benefit of this densification. Because of 5G, Verizon will need to backhaul wireless traffic from small cells located at approximately 1,000-foot intervals in urban applications.
Those small cells will require gigabit capable backhaul, which is best delivered through a deep fiber network, says Malady. As a result, Verizon is changing their approach to fiber. They are adding many more strands as they lay this fiber, leading to the ability to offer FTTP services as they accommodate their small cell-heavy 5G network. “All applications can be served out of one fiber sheath,” said Malady.
Verizon’s “One Fiber” in Boston, MA. is their first market for this approach. It’s an approach that Verizon CEO Lowell McAdam stressed at a recent industry conference, suggesting Verizon will have the largest national fiber footprint as a result of their 5G intentions. Verizon is also partnering with the city of Sacramento, CA. The theme is: “Designing and Constructing an Integrated Fiber Solution with our Municipality Partners,” according to Malady.
“[5G] leads to a whole new architecture and will require massive bandwidth, deep fiber and flexible access at the edge,” said Malady. This 5G-driven architecture is one reason Verizon is moving to NG-PON2 for their next generation fiber platform.
“We’re going to skip XG-PON and move on to NG-PON2,” Malady said, citing mid-2018 as their commercial launch time frame. NG-PON2 is better suited for 5G because of its wavelength flexibility and capability to eventually scale up to 80 Gbps in capacity.
Malady hinted this new outlook on fiber could lead to Verizon entering markets outside of their traditional territory. He cited ongoing discussions with Sacramento, Calif. for a fiber broadband-based public-private partnership.
New network architecture, according to Verizon:
• Massive bandwidth – deep fiber, flexible access
• Edge Computing
• Dense 5G Wireless
• Unlicensed and shared spectrum
• Software defined infrastructure
• Open source and automation, open RAN