Nokia, Rakuten Mobile, demo 1 Tb/channel on live network

Created March 31, 2022
Technologies and Products

Nokia and Rakuten Mobile say they have demonstrated the first live 1 Tbps per channel transmission over Rakuten Mobile’s commercial DWDM network, a speed increase of 500% on Rakuten Mobile’s existing network running at 200 Gbps. The trial took place over two days in January 2022 and connected data centres located 135 km apart in the Kanto region in Japan.

The 1 Tbps speed was achieved using coherent transmission powered by Nokia’s Photonic Service Engine (PSE) supporting 1 Tbps capacity over a 150 GHz optical spectrum, along with its inhouse DSP. Nokia says the trial demonstrated the ability to deliver 32 Tbps per fibre in C-band which can be expanded to 64 Tbps by adding L-band over a Nokia DWDM line system used in Rakuten Mobile’s optical network, and to support routers delivering 800 Gbps Ethernet.

Rakuten Mobile is scaling up its network capacity to enable 5G connectivity, video, and new applications for its mobile subscribers and business partners.

John Lancaster-Lennox, head of Market Unit Japan, Nokia, said, “The 1 Terabit per channel trial demonstrated the capability to dramatically increase fibre capacity and future-proof the Rakuten Mobile network infrastructure to support new high speed data centre interconnection.”

Tareq Amin, representative director and CEO of Rakuten Mobile, Inc., said, “We are delighted with the performance of 1 Tbps per channel on our optical network in collaboration with Nokia. This technical milestone will allow us to maximise bits per fibre and achieve improved power efficiency. The enhanced capacity will also support our traffic growth, deliver higher bandwidth and enable Rakuten Mobile to provide new service offerings.”

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This article was written
by Peter Dykes

Peter Dykes is a independent telecoms and technology journalist who has over that last 30 years written for a wide range of B2B publications and companies. A former BT engineer, he specialises in networks and associated support systems. He is currently Editor of Optical Connections.