UE SIB Acquisition Feedback Mechanism for Power Reduction

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Solution Overview

Problem

In wireless communication systems, user equipment (UE) faces challenges in efficiently requesting and acquiring system information blocks (SIBs) from base stations, particularly in non-connected states, leading to unnecessary power consumption and resource wastage due to continuous requests without feedback.

Innovation Solution

A method is introduced where the UE sends an acquisition request for SIBs and receives feedback information, including acknowledge (ACK) or negative acknowledge (NACK), indicating whether the requested SIB will be issued, allowing the UE to reduce unnecessary requests and power consumption by determining the availability of configuration resources.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the UE continuously sends acquisition requests for SIBs without receiving feedback, then the UE may eventually acquire the requested SIBs, but the power consumption increases and communication resources are wasted

Engineering Contradiction:

ImproveSIB acquisition reliabilityVSAvoidUE power consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The base station sends feedback information (ACK/NACK) to the UE in response to SIB acquisition requests. When the UE sends a request, it receives explicit feedback indicating whether the SIB will be issued (ACK) or not (NACK). This feedback mechanism allows the UE to stop sending repeated requests after receiving NACK, thereby reducing power consumption while ensuring reliable SIB acquisition when available.

Inventive Principle:

Principle #23Feedback

2Reliability

If the UE sends multiple acquisition requests for SIBs, then the probability of acquiring SIBs increases, but the communication resource usage increases

Engineering Contradiction:

ImproveSIB acquisition success rateVSAvoidcommunication resource wastage

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The base station provides feedback information to the UE indicating whether the requested SIB will be issued. This feedback allows the UE to determine when to stop sending acquisition requests, preventing redundant requests that would waste communication resources while maintaining high acquisition success rates through informed request timing.

Inventive Principle:

Principle #23Feedback

3Loss of energy

If the UE waits for feedback information before sending further requests, then unnecessary requests are reduced, but the time to acquire SIBs may increase

Engineering Contradiction:

Improveresource wastage reductionVSAvoidSIB acquisition time

Core Design Contradiction:

Loss of energyVSLoss of time

Solution Approach 1:

The base station sends feedback information (ACK/NACK) to the UE regarding SIB acquisition requests. The UE uses this feedback to intelligently control subsequent requests: receiving ACK allows the UE to stop waiting and proceed with other tasks, while NACK informs the UE that the SIB will not be issued, preventing indefinite waiting and resource waste. This balanced approach reduces both time loss and resource wastage.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS20240129095A1Method for requesting system information block, and communication device

Publication Date: 2024.04.18 BEIJING XIAOMI MOBILE SOFTWARE CO LTD

AI summary

Provide in embodiments of the present disclosure are a method and apparatus for requesting a system information block (SIB), a communication device, and a storage medium. The method for requesting a SIB may comprise: receiving an acquisition request requesting a SIB; and issuing feedback information for the acquisition request.