Terminal SI Request Handling with Feedback-Based Stop Mechanism

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Solution Overview

Problem

In 5G mobile communication systems, terminals continue to send System Information (SI) requests even after the broadcast state has changed, leading to unnecessary network resource waste due to the timing mismatch between SI request triggers and base station responses.

Innovation Solution

Implement a method where terminals send SI requests in the current SI modification period and stop the request if no feedback message is received in the next SI modification period, or if there is no SI window available, thereby avoiding repeated requests and conserving network resources.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the terminal continues to send SI requests in the next SI modification period, then the terminal can ensure to obtain the SI, but it causes waste of network resources

Engineering Contradiction:

ImproveSI acquisition reliabilityVSAvoidnetwork resource waste

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The terminal checks whether a feedback message corresponding to the SI request is received in the next SI modification period. Based on this feedback information, the terminal determines whether to continue sending SI requests or stop them, thereby avoiding unnecessary network resource consumption while ensuring reliable SI acquisition when needed

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The SI request mechanism is made dynamic by introducing a checking process before each request. The terminal dynamically adjusts its behavior based on whether the broadcast state has changed and whether feedback messages are received, transitioning from static continuous requesting to adaptive conditional requesting

Inventive Principle:

Principle #15Dynamics

2Ease of operation

If the terminal sends SI requests based on the broadcast state in the previous SI modification period, then the terminal can trigger requests in advance, but the broadcast state becomes invalid in the next SI modification period causing meaningless requests

Engineering Contradiction:

Improverequest triggering convenienceVSAvoidtiming mismatch

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The terminal sends the SI request in the current SI modification period before the broadcast state may change in the next period. This preliminary action ensures the request is sent while the broadcast state is still valid, avoiding the timing mismatch problem where the state becomes invalid after the request is triggered

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The terminal uses feedback messages from the base station to determine whether to continue sending requests in the next SI modification period. This feedback mechanism ensures the terminal only sends requests when necessary, avoiding meaningless requests based on outdated broadcast state information

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS11910296B2Method and apparatus for processing SI request, terminal and storage medium

Publication Date: 2024.02.20 BEIJING XIAOMI MOBILE SOFTWARE CO LTD

AI summary

The present disclosure provides a method and an apparatus for processing a system information (SI) request. The method includes: sending an SI request to a base station in a current SI modification period, the SI request being configured to obtain at least one first SI corresponding to the SI request; determining, in the next SI modification period, whether a feedback message corresponding to the SI request returned by the base station is received; and if the feedback information is not received, stopping the SI request.