Common Search Space Configuration for Other SIB Acquisition

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Solution Overview

Problem

Current wireless communication standards lack defined techniques for configuring common search spaces to acquire system information blocks other than the master information block (MIB) and system information block type 1 (SIB1), such as SIB6, SIB7, or SIB8, which are crucial for system information changes related to paging and public warning systems.

Innovation Solution

A method and system for configuring a common search space by a base station to transmit messages with common search space configuration parameters, enabling a user equipment (UE) to receive system information blocks (OSIBs) like SIB6, SIB7, or SIB8, and subsequent messages containing system information parameters.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If common search space configuration techniques are defined only for SIB1 and MIB acquisition, then the UE can reliably acquire basic system information, but the UE cannot acquire other system information blocks (OSIBs) like SIB6, SIB7, or SIB8 which are crucial for paging and public warning systems

Engineering Contradiction:

Improvesystem information block acquisitionVSAvoidsystem information block types

Core Design Contradiction:

Loss of informationVSAdaptability or versatility

Solution Approach 1:

The patent extends the common search space configuration mechanism to support multiple types of system information blocks (SIB1, MIB, and OSIBs). By making the common search space universally applicable to different SIB types through configurable parameters, the system achieves multi-functionality without creating separate acquisition mechanisms for each SIB type.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent introduces configurable parameters (commonSearchSpaceZero, commonSearchSpaceOne, commonSearchSpaceOther) that allow the system to adapt the common search space configuration for different OSIB types. These parameter changes enable flexible adaptation of the search space to various system information requirements.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If the base station transmits multiple sets of common search space configuration parameters for different SIB types, then the UE can acquire various system information blocks, but the configuration complexity increases

Engineering Contradiction:

Improvesystem information block typesVSAvoidsearch space configuration

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent segments the common search space configuration into distinct parameter sets (commonSearchSpaceZero, commonSearchSpaceOne, commonSearchSpaceOther) corresponding to different SIB types. This segmentation allows the UE to acquire only the relevant configuration parameters for its current needs, reducing processing complexity while maintaining versatility.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The base station pre-configures multiple sets of common search space parameters in the RRCReconfiguration message, allowing the UE to have all necessary configuration information available in advance. This preliminary action eliminates the need for dynamic configuration requests and reduces real-time processing complexity.

Inventive Principle:

Principle #10Preliminary action

3Loss of information

If the UE monitors multiple common search spaces for different OSIB types, then complete system information is acquired, but the UE power consumption increases

Engineering Contradiction:

Improvesystem information completenessVSAvoidUE power consumption

Core Design Contradiction:

Loss of informationVSUse of energy by moving object

Solution Approach 1:

The patent enables the UE to perform partial monitoring by selecting only the common search space configuration set relevant to its current information needs. Instead of monitoring all possible SIB types continuously, the UE can focus on specific OSIB types (e.g., SIB6 for paging, SIB7 for positioning) based on its operational requirements, reducing power consumption while maintaining information completeness.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentEP4102893B1Common search space configuration and system information acquisition

Publication Date: 2025.07.30 GOOGLE LLC

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AI summary

This document describes methods and systems for common search space configuration and system information acquisition. As part of the methods and systems, a base station (120) wirelessly communicating with a user equipment (110) that is in an engaged mode determines (402) to configure a common search space through which the user equipment (110) can receive a system information block that is other than a system information block type 1 or a master information block. The base station (120) transmits a first message (404) that includes a set of common search space configuration parameters for the user equipment (110) to receive the other system information block. The base station (120) transmits (406), in accordance with the set of common search space configuration parameters, a second message that includes the other system information block.