Nokia Bell Labs first to show use of ultra-low latency 10G PON for mobile fronthaul

20/06/2017

Nokia Bell Labs shows how operators can re-use existing fiber-to-the-home (FTTH) massive-scale deployments to satisfy the strict latency constraints and capacity needs for mobile transport in 4G and future 5G networks

Breakthrough means operators can prepare for the ever-increasing amounts of data traffic needed for 5G and the Internet of Things (IoT) in a cost-effective way

Espoo, Finland - Nokia has announced a significant industry breakthrough in the effort to better support mobile fronthaul and latency sensitive services. In a world-first, Nokia Bell Labs showed it is now possible to use a commercial next generation PON (NG-PON) to transport ultra-low latency CPRI streams via a standard single fiber running between the Baseband Unit (BBU) and the Remote Radio Head (RRH). The proof-of concept demonstration was done in accordance with the latency budget requirements for the fronthaul of commercial radio equipment, showing that existing fiber networks can be used to cost-efficiently transport mobile traffic and help accelerate 5G.

Fronthaul is an essential element of the C-RAN (Centralized Radio Access Network) architecture in mobile networks, where the processing power is centralized and moved away from the cell sites. This can help operators reduce the cost and power consumption of their on-site installations along with ease cell cooperation schemes that help enhance mobile network capacity and coverage. In a C-RAN architecture, the legacy Common Public Radio Interfaces (CPRI) and some of the next generation fronthaul interfaces require ultra-low latency transport - often in the sub-millisecond range - to meet the strict timing and synchronization requirements of 4G and 5G technologies.

Nokia Bell Labs validated that the use of next generation PON technology XGS-PON (X=10, G=Gigabit, S-PON=symmetrical Passive Optical Network) technology would satisfy these strict timing constraints and deliver the capacity needed while reducing the cost of mobile cell site transport. XGS-PON runs on existing fiber access networks and allows operators to use GPON platforms and technology to deliver high capacity services. This is important for operators who increasingly need to support anyhaul applications. No longer requiring a separate network, operators can now use existing passive optical networks used in Fiber-to-the-home or Building (FTTH/FTTB) deployments to quickly and cost-effectively gain the performance and coverage they require to handle the mobile transport of their densifying cell sites.

Peter Vetter, head of Access Research at Nokia Bell Labs, said: This is an important milestone in the industry and in the advancement of 5G, showing for the first time how a PON network can effectively be used to support very high capacity, low latency applications. It demonstrates the flexibility of PON to support traditional CPRI and evolving mobile specifications, such as fronthaul over simpler native Ethernets, and validates the readiness of PON for the 5G era.

Federico Guill n, president of Nokias Fixed Networks business group, said: Ive often said that the world is going wireless but wireless is going fixed. This Bell Labs demonstration is another example, successfully showing how fixed access technologies can be used to support mobile deployments. Mobile environments that may have traditionally relied on dedicated transport networks to connect cell sites to their core networks can now use existing fiber access networks as an alternative. The massive scale, capacity and coverage of fiber access networks make them a perfect match to support 5G

In addition to mobile transport applications, passive optical networks are also becoming an attractive option for operators looking to support latency sensitive services and IoT applications such as manufacturing control and connected vehicles.

This technology breakthrough helps ensure mobile service providers on the path to 5G are well prepared and further expands Nokias Anyhaul mobile transport solutions while strengthening its portfolio of converged access networks for fixed and mobile services.

Did you know?

XGS-PON is the most cost-efficient way to upgrade GPON networks and deploy 10G symmetrical services

XGS-PON can be deployed from the existing Nokia GPON platform

Nokia has 9 trials and commercial XGS-PON deployments

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About Nokia Bell Labs

Nokia Bell Labs is the world-renowned industrial research arm of Nokia. Over its 90-year history, Bell Labs has invented many of the foundational technologies that underpin information and communications networks and all digital devices and systems. This research has resulted in 8 Nobel Prizes, two Turing Awards, three Japan Prizes, a plethora of National Medals of Science and Engineering, as well as an Oscar, two Grammys and an Emmy award for technical innovation. Nokia Bell Labs continues to conduct disruptive research focused on solving the challenges of the new digital era, defined by the contextual connection and interaction of everything and everyone, as described in the book, The Future X Network: A Bell Labs Perspective. www.bell-labs.com

About Nokia

We create the technology to connect the world. Powered by the research and innovation of Nokia Bell Labs, we serve communications service providers, governments, large enterprises and consumers, with the industrys most complete, end-to-end portfolio of products, services and licensing. From the enabling infrastructure for 5G and the Internet of Things, to emerging applications in virtual reality and digital health, we are shaping the future of technology to transform the human experience. nokia.com

Media Enquiries:

Kathleen De Smedt

Nokia Media Relations

Phone: +32 3 240 45 97

E-mail: kathleen.de_smedt@nokia.com

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