By Daniel Okafor

Rakuten Symphony has secured grant funding to run an open RAN trial with Kyivstar, Ukraine's largest mobile operator, according to a Mobile World Live report. The award marks a new commercial entry for the Japanese vendor in Eastern Europe and adds a Tier-1 reference customer in a market where open RAN deployment has remained limited.

What does the grant cover?

The funding supports a pilot deployment of disaggregated radio access network technology on Kyivstar's network. Open RAN separates base station hardware and software into interoperable components, allowing operators to mix suppliers rather than rely on a single integrated vendor. The trial will test that interoperability under live commercial traffic conditions, the standard benchmark vendors use to convert pilots into multi-site contracts.

Why does Kyivstar matter as a trial partner?

Kyivstar serves more than 23 million mobile subscribers across Ukraine, according to the operator's public disclosures. A successful trial at that scale provides Rakuten Symphony with measurable performance data from one of Eastern Europe's largest subscriber bases. The Ukrainian market also offers a regulatory environment supportive of vendor diversification, with national authorities publicly backing open architectures as a path to reduced supply-chain risk.

Where does Rakuten Symphony stand in the open RAN market?

Rakuten Symphony operates as the international vendor arm of Japan's Rakuten Group. The unit has supplied open RAN infrastructure to operators in Japan, Germany, and the United States since the parent company launched its domestic greenfield mobile network on a fully virtualized RAN stack. The Kyivstar award extends that footprint into Eastern Europe, where incumbent European RAN vendors have historically dominated procurement.

How does the grant fit broader funding flows?

National and European Union programmes have directed tens of millions of euros toward open RAN pilots since 2020. The stated policy goal is reducing operator dependence on the three incumbent RAN suppliers that control most global market share. Rakuten Symphony has emerged as a leading non-incumbent beneficiary of these allocations, competing for awards against smaller specialist vendors and integrated suppliers entering the disaggregated segment.

What remains undisclosed?

The Mobile World Live report did not disclose the grant amount, the trial start date, the planned duration, or the number of trial sites. Public reporting also did not identify the funding body, whether Ukrainian, European, or Japanese in origin. The absence of those figures leaves the commercial scale of the pilot unclear to outside observers and to competing vendors tracking the conversion rate from grant-funded trials to commercial deployments.

What changes for the vendor and the operator?

For Rakuten Symphony, a successful Kyivstar trial would extend its geographic reference portfolio and add measurable performance data from a frontier market. For Kyivstar, the engagement gives the operator a non-incumbent RAN option at a moment when European carriers are actively reassessing supplier diversification policies. Both parties gain a public reference case, assuming the trial proceeds to commercial terms.

What comes next?

Trial-to-deployment conversion remains the critical metric industry analysts track for open RAN commercial viability. A pilot that moves to a multi-thousand-site commercial contract would reset competitive dynamics in the global RAN market. The Kyivstar grant gives Rakuten Symphony another data point on that trajectory, with the next wave of disclosure expected from either party once the trial reaches operational milestones.