Base station and control method

The base station with a distributed unit and radio units optimizes the open fronthaul interface for distributed MIMO, addressing unclear operations in O-RAN, by implementing cooperative beamforming, diversity gain maximization, and dynamic antenna placement to enhance communication reliability and quality.

WO2026105228A1 Publication Date: 2026-05-21NTT DOCOMO INC
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Patent Information

Application Number
PCT/JP2024/040309
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-11-13
Publication Date
2026-05-21

AI Technical Summary

Technical Problem

The operation of the open fronthaul interface in O-RAN for distributed MIMO is not clearly defined, which affects the performance and implementation complexity in 6G communication systems.

Method used

A base station comprising a distributed unit and multiple radio units, where the radio units receive configuration information for cooperative beamforming, synchronization, and dynamic antenna placement, enabling coordinated beamforming, diversity gain maximization, and decentralized cooperation mechanisms to optimize communication quality and efficiency.

Benefits of technology

The solution clarifies the operation of the open fronthaul interface, enhancing communication reliability, quality, and coverage by implementing advanced features like coordinated beamforming, diversity gain maximization, and dynamic antenna placement, improving user experience and network resource utilization.

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Abstract

Provided is a base station including a distributed unit and a plurality of radio units, wherein each of the plurality of radio units includes: a reception unit that receives, from the distributed unit, configuration information related to cooperative beamforming control; a control unit that, on the basis of the configuration information, enables a synchronization window for synchronizing data transmission timings among the plurality of radio units; and a transmission unit that uses the synchronization window to transmit data to a terminal.
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