Mobile communication systems, NCR devices, network devices, communication methods, programs, and chipsets

A network-controlled repeater device in 5G systems addresses the coverage reduction issue by relaying and amplifying high-frequency radio signals, enhancing communication for user devices through network-controlled beamforming and cell management.

JP7864846B2Active Publication Date: 2026-05-25KYOCERA CORP
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
KYOCERA CORP
Filing Date
2023-11-01
Publication Date
2026-05-25

AI Technical Summary

Technical Problem

The high directivity of radio signals in high-frequency bands, such as millimeter-wave and terahertz bands, reduces the coverage of base stations in 5G mobile communication systems, leading to communication challenges for user devices outside the direct line of sight or obstructed areas.

Method used

A network-controlled repeater device (NCR) relays wireless signals between a network and user devices, amplifying and transmitting radio signals directionally to expand coverage, controlled by a network device through a control terminal that manages cell connections and beamforming.

Benefits of technology

The NCR device efficiently expands the coverage of base stations by relaying signals, ensuring effective communication for user devices in challenging environments, including non-line-of-sight conditions and obstructed areas.

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Abstract

This mobile communication system comprises a network and a relay device that performs relay transmission for relaying a wireless signal transmitted between the network and a user device. The relay device connects to a cell selected by cell selection or cell reselection, to perform the relay transmission. Cell information identifying a desired cell that is determined as a connection destination of the relay device is communicated between the network and the relay device, or between entities in the network.
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