How did Rakuten Mobile know Open RAN was ready before going all-in for its ambitious network buildout in Japan?

Rakuten Mobile did not know that Open RAN was ready when it started its journey in 2018. The important message is that nothing is ever completely ready until it’s done, and then it’s in decline. That’s the same with 2G because it needed 3G, 3G needed 4G, and 4G needed 5G.

There was a lot of skepticism when Tareq Amin, who was Rakuten Mobile CTO at the time, decided decided to go down the Open RAN direction and the fully cloud-native virtualized direction in 2018. We have realized that when you do something and try very hard, the rewards are very good.

275,000 cells deployed while maintaining operational headcount of 250 people

Source: Rakuten Symphony

The message here is not of being ready but being willing to try and do something different, which is always hard. It will be hard for everybody for different reasons, but that’s how you get different results.

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Winner โ€“ Private Network Startups – Niral Networks, deploys private 5G and Edge AI network at GMRโ€™s energy facility which faced critical connectivity and safety challenges. This air-gapped, industrial-grade solution supports plant automation, AI surveillance, and drone operations, offering high throughput, low latency, and centralized management across multiple sites.
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In a detailed conversation with Rakuten Symphonyโ€™s Geoff Hollingworth, this article explores how Rakuten Mobileโ€™s Open RAN rollout defied industry skepticism and set a new bar for telecom transformation. With over 275,000 cells deployed and just 250 staff, Rakutenโ€™s software-centric model shows how cloud-native, virtualized networks can scaleโ€”offering key lessons for both greenfield and brownfield operators.

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