Communication device, master node, and communication control method

By transmitting beam identification information from user equipment to the master node, which then shares it with the secondary node, the system facilitates beam failure recovery in deactivated SCGs, addressing the challenge of SCG deactivation in user equipment.

JP7768691B2Active Publication Date: 2025-11-12DENSO CORP +1
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Patent Information

Application Number
JP2021107745
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2021-06-29
Publication Date
2025-11-12
Estimated Expiration
2041-06-29

AI Technical Summary

Technical Problem

When a Secondary Cell Group (SCG) is deactivated in user equipment, a base station operating as a secondary node cannot perform signaling for beam failure recovery due to the lack of necessary information from the user equipment.

Method used

A base station operating as a master node receives a failure notification from the user equipment including beam identification information, and transmits this information to another base station acting as a secondary node to facilitate beam failure recovery in deactivated SCGs.

Benefits of technology

Enables beam failure recovery in deactivated SCGs by providing the necessary information to the network side, ensuring seamless communication and reducing power consumption in user equipment.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

To provide a method and a base station that provide a network side with information necessary for performing beam failure recovery even when a secondary cell group (SCG) is deactivated.SOLUTION: A mobile communication system includes a master node base station 200-1 that manages a master cell group, a secondary node base station 200-2 that manages a secondary cell group, and user equipment 100 that uses radio resources provided by both base stations in a dual access scheme. The master node base station receives, from the user equipment, a failure notification including beam identification information that identifies a candidate beam to be used for recovery when a beam failure occurs in a cell belonging to the deactivated secondary cell group S105. The master node base station transmits the failure notification to the secondary node base station S106.SELECTED DRAWING: Figure 7
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