Terminal Grouping by SSB Time Index for Lower Control Overhead

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Solution Overview

Problem

Existing wireless access technologies face challenges in balancing the reduction of control information overhead with the flexibility of controlling terminal devices, as transmitting common system information reduces overhead but limits flexibility, while transmitting device-specific information increases overhead.

Innovation Solution

A mechanism is introduced where first and second control information is transmitted to a terminal group, allowing common control information to be notified to multiple devices with one-time transmission, reducing overhead and enabling flexible control.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If common system information is transmitted to all terminal devices, then control information overhead is reduced, but flexibility of controlling individual terminal devices deteriorates

Engineering Contradiction:

Improvecontrol information overheadVSAvoidflexibility of controlling terminal devices

Core Design Contradiction:

Loss of energyVSAdaptability or versatility

Solution Approach 1:

The patent segments terminal devices into different groups based on their synchronization signal block detection capabilities. Different control information is transmitted to different groups, allowing the system to reduce overhead for common control while maintaining flexibility for device-specific control through group-based differentiation.

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If device-specific system information is transmitted to each terminal device, then flexibility of controlling terminal devices is improved, but control information overhead increases

Engineering Contradiction:

Improveflexibility of controlling terminal devicesVSAvoidcontrol information overhead

Core Design Contradiction:

Adaptability or versatilityVSLoss of energy

Solution Approach 1:

The patent merges control information transmission by grouping terminal devices with similar characteristics together. Instead of transmitting individual control information to each device, the system transmits group-specific control information that applies to multiple devices, thereby reducing overall overhead while maintaining appropriate control flexibility.

Inventive Principle:

Principle #5Merging (Combining)

3Loss of energy

If common control information is transmitted to terminal groups, then control information overhead is reduced, but device-specific control capability deteriorates

Engineering Contradiction:

Improvecontrol information overheadVSAvoiddevice-specific control capability

Core Design Contradiction:

Loss of energyVSEase of operation

Solution Approach 1:

The patent applies local quality by providing different control information to different terminal groups based on their specific characteristics and requirements. Each group receives control information tailored to its local needs, ensuring that device-specific control capability is maintained while still achieving overhead reduction through group-based transmission.

Inventive Principle:

Principle #3Local quality

Data Source

PatentEP4236562B1Terminal grouping based on time index of synchronization signal block

Publication Date: 2026.02.18 SONY GROUP CORP

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AI summary

[Object] To provide a mechanism that makes it possible to reduce overhead of control information and flexibly control terminal devices. [Solution] There is provided a base station device including a transmission processing unit configured to transmit first control information including information specific to a terminal group, to the terminal group including one or more terminal devices, and transmit second control information to the terminal group on a basis of the information specific to the terminal group.