Successful Demonstration of Stable High-Capacity Millimeter-Wave Communication for Multiple High-Speed Moving Vehicles Aiming for the 6G Era
NTT Docomo, NEC, and NTT have developed 6G-era millimeter-wave communication technology. By using distributed MIMO and pre-correction techniques, they achieved stable high-capacity communication between multiple high-speed moving vehicles, increasing throughput by approximately 1.3 times.
📋 Article Processing Timeline
- 📰 Published: May 25, 2026 at 20:22
- 🔍 Collected: May 25, 2026 at 12:01
- 🤖 AI Analyzed: May 25, 2026 at 12:23 (21 min after Collected)
NTT Docomo, Inc. (Docomo) and NEC Corporation (NEC), in collaboration with NTT Corporation (NTT), have developed technology to realize stable, simultaneous communication for multiple high-speed moving vehicles utilizing high-capacity millimeter-wave (40GHz band) communication expected for the 6G era.
This technology utilizes distributed MIMO, which places multiple antennas from a base station at different locations, combined with pre-correction of signal transmission frequency and timing. In demonstration experiments conducted in March 2026, multiple wireless terminal vehicles traveling at high speeds in opposite lanes maintained stable high throughput, successfully improving average throughput by approximately 1.3 times compared to conventional technology.
[Features of the Technology]
This technology uses uplink reference signals sent from each wireless terminal vehicle for every base station antenna to pre-estimate the appropriate transmission frequency and signal transmission timing for each vehicle. By pre-correcting multiplexed signals for each vehicle before synthesis and transmission, it eliminates differences in reception timing among multiple vehicles, realizing stable high-capacity communication.
[Future Developments]
This demonstration proved that high-capacity communication using millimeter waves is possible even in environments where multiple automobiles or trains are moving at high speeds. Development will now be accelerated toward the social implementation of 6G-related technologies.
This technology utilizes distributed MIMO, which places multiple antennas from a base station at different locations, combined with pre-correction of signal transmission frequency and timing. In demonstration experiments conducted in March 2026, multiple wireless terminal vehicles traveling at high speeds in opposite lanes maintained stable high throughput, successfully improving average throughput by approximately 1.3 times compared to conventional technology.
[Features of the Technology]
This technology uses uplink reference signals sent from each wireless terminal vehicle for every base station antenna to pre-estimate the appropriate transmission frequency and signal transmission timing for each vehicle. By pre-correcting multiplexed signals for each vehicle before synthesis and transmission, it eliminates differences in reception timing among multiple vehicles, realizing stable high-capacity communication.
[Future Developments]
This demonstration proved that high-capacity communication using millimeter waves is possible even in environments where multiple automobiles or trains are moving at high speeds. Development will now be accelerated toward the social implementation of 6G-related technologies.
FAQ
What was the throughput improvement achieved by NTT Docomo's 6G millimeter-wave technology in 2024?
NTT Docomo, NEC, and NTT achieved approximately 1.3 times higher throughput using their new 6G-era technology in 2024.
Which companies collaborated on the NEC-developed distributed MIMO system for high-speed vehicles in 2024?
NTT Docomo, NEC, and NTT jointly developed the distributed MIMO and pre-correction communication technology in 2024.
How did NTT's pre-correction technique enhance millimeter-wave communication in the 2024 trial?
NTT's pre-correction technique helped stabilize high-capacity millimeter-wave communication for multiple high-speed moving vehicles in 2024.
What communication technology did NTT Docomo demonstrate with NEC for 6G in 2024?
NTT Docomo demonstrated stable high-capacity millimeter-wave communication using distributed MIMO with NEC in 2024.
What was the main goal of NTT's 6G millimeter-wave communication trial in 2024?
The main goal of NTT's 2024 trial was to achieve stable high-capacity communication for multiple high-speed moving vehicles.