Terminal SIB Version Sub-Index Comparison

Solution Overview

Problem

In wireless communication systems, when unnecessary information changes in the system information block, terminals unnecessarily consume radio resources and power by requesting and transmitting new versions of the system information block, even if the information is not relevant to the terminal's capabilities.

Innovation Solution

A method and apparatus for determining the validity of a system information block by comparing version indices, where a terminal receives a version index from a serving cell, determines a valid sub-index based on its capability, and checks if the version of the system information block is identical, allowing for efficient transmission and reducing unnecessary resource consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the terminal requests and receives the transmission of the new version of system information block due to the change, then the terminal can have the latest system information, but the radio resource and power are unnecessarily consumed

Engineering Contradiction:

Improvesystem information validityVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The version index is segmented into multiple sub-indices, where each sub-index corresponds to specific information elements within the system information block. The terminal determines a valid sub-index based on its capability and compares only the relevant sub-indices to identify whether an update is necessary, rather than treating the entire version index as a single unit.

Inventive Principle:

Principle #1Segmentation

2Reliability

If the terminal requests and receives the transmission of the new version of system information block due to the change, then the terminal can have the latest system information, but the radio resource and power are unnecessarily consumed

Engineering Contradiction:

Improvesystem information validityVSAvoidradio resource consumption

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The version index is segmented into multiple sub-indices, where each sub-index corresponds to specific information elements within the system information block. The terminal determines a valid sub-index based on its capability and compares only the relevant sub-indices to identify whether an update is necessary, rather than treating the entire version index as a single unit.

Inventive Principle:

Principle #1Segmentation

3Ease of operation

If the terminal compares the entire version index without considering terminal capability, then the version checking is simple, but unnecessary information changes cause incorrect version determination

Engineering Contradiction:

Improveversion comparison simplicityVSAvoidversion identification accuracy

Core Design Contradiction:

Ease of operationVSMeasurement precision

Solution Approach 1:

The terminal determines a valid sub-index from the version index based on its specific capability (e.g., supported services, terminal version, category). This allows the terminal to focus comparison on locally relevant portions of the version index that correspond to information elements it can actually use, rather than uniformly processing the entire version index.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS11191006B2Method for determining validity of system information block and apparatus supporting same

Publication Date: 2021.11.30 LG ELECTRONICS INC

AI summary

A method for determining the validity of a system information block (SIB) by a terminal in a wireless communication system, and an apparatus supporting the same. The method includes: receiving, from a serving cell, a first version index indicating a version of a first system information block; determining a valid sub index to be mapped to a terminal capability of the terminal, among a plurality of sub-indices configuring the first version index; and comparing a valid sub index of a second version index indicating a version of a second system information block stored in the terminal with a valid sub index of the first version index, so as to determine whether the version of the first system information block is identical to the version of the second system information block.