Dynamic RRM Relaxation for Short Data Transmission in User Equipment

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Solution Overview

Problem

Current telecommunication technologies fail to resolve conflicts between simultaneous or overlapping implementations of radio resource management (RRM) relaxation and short data transmission (SDT), particularly in scenarios where a UE transitions to an inactive mode and completes timing advance validation, leading to inefficiencies in resource and battery usage.

Innovation Solution

Implement RRM relaxation until SDT is initiated, pause RRM relaxation during actual SDT transmission and reception, or continue RRM relaxation on different carriers, depending on conditions such as stationary status or low mobility, to manage RRM and SDT effectively.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If RRM relaxation is performed continuously, then power consumption is reduced, but resource utilization efficiency deteriorates when SDT is needed

Engineering Contradiction:

Improvepower consumptionVSAvoidresource utilization efficiency

Core Design Contradiction:

Use of energy by moving objectVSProductivity

Solution Approach 1:

The patent applies dynamics by making the RRM relaxation state changeable based on operational conditions. The system dynamically transitions between relaxed and active RRM states depending on whether SDT is initiated, ensuring optimal power efficiency during idle periods while maintaining resource utilization efficiency when data transmission is required

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent implements preliminary action by preparing to pause RRM relaxation in advance when SDT initiation is detected. The system monitors for SDT conditions and proactively adjusts the RRM relaxation state before actual data transmission begins, preventing resource utilization inefficiency while maintaining power savings during true idle periods

Inventive Principle:

Principle #10Preliminary action

2Productivity

If RRM relaxation is paused during SDT, then resource utilization efficiency is improved, but power consumption increases

Engineering Contradiction:

Improveresource utilization efficiencyVSAvoidpower consumption

Core Design Contradiction:

ProductivityVSUse of energy by moving object

Solution Approach 1:

The patent applies segmentation by dividing the RRM operation into distinct phases: continuous relaxation during idle periods, paused relaxation during SDT transmission/reception, and resumption of relaxation after SDT completion. This segmented approach optimizes power consumption by limiting active RRM monitoring to only when necessary for resource utilization

Inventive Principle:

Principle #1Segmentation

3Use of energy by moving object

If RRM relaxation continues on different carriers, then power conservation is maintained, but interference management may deteriorate

Engineering Contradiction:

Improvepower conservationVSAvoidinterference management

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The patent applies local quality by applying different RRM relaxation levels to different carriers based on their specific roles. The serving carrier maintains full RRM monitoring for reliable interference management during SDT, while other carriers can continue with relaxed monitoring to preserve power conservation benefits

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS20250287314A1Systems, methods, and devices for enhanced short data transmission (SDT)

Publication Date: 2025.09.11 APPLE INC

AI summary

Techniques, described herein, include solutions for enabling implementation of radio resource management (RRM) relaxation and short data transmission (SDT) in user equipment (UE), including reduced capacity (redcap) UE. In some implementations, RRM relaxation may be terminated during SDT; RRM relaxation may be paused during actual SDT transmission; RRM relaxation be implemented during SDT based on one or more RRM relaxation conditions; RRM relaxation may be implemented for only certain carriers during SDT; etc.