Beam-Based System Information Transmission With On-Demand SI Requests

Solution Overview

Problem

There is no feasible technical solution for transmitting other system information in new generation wireless communication systems, which is necessary for achieving better forward compatibility and flexible resource scheduling.

Innovation Solution

A method is provided where a network side transmits request configuration information for other system information to a terminal, including transmission configuration details, and the terminal requests and receives the other system information on a downlink transmission port indicated by this information, using predefined preamble resources and potential RAR configurations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If beamforming is used to concentrate transmission energy in specific directions, then antenna gain is improved, but omnidirectional coverage requires transmitting multiple beams which increases system overhead

Engineering Contradiction:

Improveantenna gainVSAvoidsystem overhead

Core Design Contradiction:

Illumination intensityVSQuantity of substance

Solution Approach 1:

The patent segments system information into minimum system information (broadcast periodically in all beams) and other system information (transmitted on-demand in specific beams). This segmentation allows the system to maintain omnidirectional coverage for essential information while reducing overhead for additional information by transmitting it only when needed and only in specific beam directions where users are located.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements periodic broadcasting of minimum system information in all beam directions, while other system information is transmitted on-demand. This periodic action ensures that essential information reaches all users periodically, while reducing the frequency of transmitting additional information to only when users request it, thereby reducing overall system overhead.

Inventive Principle:

Principle #19Periodic action

2Illumination intensity

If high frequency carrier (e.g., 28 GHz, 45 GHz) is used to accommodate more antenna elements per unit area, then antenna gain through beamforming is enhanced, but coverage performance deteriorates due to large free propagation loss and attenuation

Engineering Contradiction:

Improveantenna gainVSAvoidcoverage performance

Core Design Contradiction:

Illumination intensityVSReliability

Solution Approach 1:

The patent implements dynamic beam management where the base station transmits multiple beams in different directions and users can request service in specific beam directions. The system dynamically switches between different transmission modes (omnidirectional minimum SI broadcasting and directional other SI transmission) based on user needs and channel conditions, optimizing both gain and coverage reliability.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent introduces beam direction indication as an intermediary mechanism. Users send beam direction indication information to the base station, which then uses this information to determine the appropriate beam direction for transmitting other system information. This intermediary mechanism enables precise directional transmission while maintaining overall coverage reliability.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Adaptability or versatility

If minimum system information is broadcast periodically in all beam directions to achieve omnidirectional coverage, then access requirements for terminals in all directions are satisfied, but the absolute overhead of system broadcast message becomes larger

Engineering Contradiction:

Improveomnidirectional coverageVSAvoidsystem overhead

Core Design Contradiction:

Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The patent segments system information into minimum system information (broadcast periodically in all beams) and other system information (transmitted on-demand in specific beams). This segmentation allows the system to maintain omnidirectional coverage for essential information while reducing overhead for additional information by transmitting it only when needed and only in specific beam directions.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements periodic broadcasting of minimum system information in all beam directions, while other system information is transmitted on-demand. This periodic action ensures that essential information reaches all users periodically, while reducing the frequency of transmitting additional information to only when users request it, thereby reducing overall system overhead.

Inventive Principle:

Principle #19Periodic action

Data Source

PatentEP4693918A2Information transmission method and device, storage medium and processor

Publication Date: 2026.02.11 ZTE CORP

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AI summary

The present application provides an information transmission method and device, storage medium and processor. The method includes: a network side transmits request configuration information of other system information to a terminal, the request configuration information of the other system information including a transmission configuration for request information of the other system information, the request information of the other system information being information transmitted to the network side when the terminal requests to acquire the other system information; and the network side transmits the other system information on the downlink transmission port indicated by the request information of the other system information.