Nokia Bell Labs first to show use of ultra-low latency 10G PON for mobile fronthaul
June 20 2017 - 2:01AM
- 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 Guillén, president of Nokia's Fixed Networks
business group, said: "I've 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
Nokia's 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 Grammy's 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
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