Nokia, KDDI Test Energy-Efficient 6G Base Station Technology

Why It Matters

Energy‑efficient 6G base stations can curb the rising power demand of denser networks, supporting operators’ sustainability targets and lowering operating costs. The technology provides a baseline for future standards, influencing global telecom equipment design.

Key Takeaways

• Proof‑of‑concept cut base‑station power use by 40%
• Achieved up to four times throughput without extra energy
• Integrates time, frequency, space, power for 4D optimization
• Supports KDDI’s carbon‑neutral ambition and industry 6G standards
• Findings will be shared with 3GPP for future regulations

Pulse Analysis

The race toward 6G is accelerating, but the promise of faster speeds and ubiquitous connectivity brings a hidden cost: soaring energy consumption. As video streaming, cloud services, IoT devices, and AI‑driven applications multiply, mobile operators must deploy far more base stations to meet demand. Each additional site adds to the grid load, threatening both profit margins and climate goals. Industry analysts therefore view energy efficiency as the next decisive competitive edge, especially for carriers in markets with stringent carbon‑reduction policies.

Nokia Bell Labs and Japan’s KDDI Research tackled this challenge with Intelligent 4D Resource Optimisation Technology, a system that simultaneously balances time, frequency, space and transmission power. In a controlled US lab mimicking commercial 5G deployment, the trial achieved a 40% reduction in power use while maintaining throughput, and it pushed throughput up to four times higher without extra energy. The breakthrough stems from dynamic antenna muting, adaptive power control, and traffic‑aware allocation of time‑frequency resources—capabilities that were previously siloed or unavailable on legacy equipment.

The implications extend beyond a single experiment. By publishing the results to 3GPP, Nokia and KDDI aim to embed these efficiency mechanisms into the emerging 6G standard, giving equipment manufacturers and network operators a ready‑made blueprint for greener infrastructure. For carriers, the technology promises lower operating expenditures, easier compliance with carbon‑neutral pledges, and a differentiated service offering that marries high performance with sustainability. As 6G deployments loom within four years, the industry’s ability to scale responsibly will hinge on innovations like 4D resource optimization, making this trial a pivotal milestone in the evolution of mobile networks.