Overheating Triggered RRM Relaxation for Wireless UE

Solution Overview

Problem

Wireless communication systems face challenges in managing overheating at user equipment (UE) due to power-consuming operations, leading to reduced performance and battery life, with conventional techniques being insufficient in mitigating these issues.

Innovation Solution

The UE requests overheating assistance by transmitting an uplink control message to a base station, which includes a request to reconfigure radio resource management (RRM) measurement parameters, such as reducing the number of measurement objects, measurement frequency, or applying a scaling factor, to mitigate overheating.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If the UE performs frequent and comprehensive RRM measurements to maintain network connectivity and optimize performance, then the measurement precision and reliability are improved, but the power consumption increases causing overheating

Engineering Contradiction:

ImproveRRM measurement accuracyVSAvoidUE operating temperature

Core Design Contradiction:

Measurement precisionVSTemperature

Solution Approach 1:

The patent applies partial action by selectively reducing RRM measurements based on UE overheating status. When overheating is detected, the UE transmits an overheating assistance indication to the network, which then relaxes RRM measurement requirements partially rather than completely disabling them. This maintains essential connectivity while reducing power-consuming measurements that contribute to overheating.

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

The patent implements dynamic adjustment of RRM measurement parameters based on real-time thermal conditions. The UE monitors its temperature and dynamically signals the network to adjust measurement frequency and scope. This creates a feedback loop where measurement intensity adapts to thermal constraints, resolving the contradiction between maintaining measurement precision and preventing overheating.

Inventive Principle:

Principle #15Dynamics

2Productivity

If the UE performs power-consuming operations to maintain high data throughput and low latency, then the productivity is improved, but the power consumption increases reducing battery life

Engineering Contradiction:

Improvedata throughputVSAvoidbattery life

Core Design Contradiction:

ProductivityVSDuration of action of moving object

Solution Approach 1:

The patent applies partial action by selectively reducing RRM measurements based on UE overheating status. When overheating is detected, the UE transmits an overheating assistance indication to the network, which then relaxes RRM measurement requirements partially rather than completely disabling them. This maintains essential connectivity while reducing power-consuming measurements that contribute to overheating.

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

The patent changes operational parameters dynamically based on thermal conditions. When overheating occurs, the network adjusts RRM measurement parameters such as measurement frequency, number of measurement objects, and scaling factors. This parameter adjustment reduces power consumption while maintaining adequate network performance, extending battery life without completely sacrificing productivity.

Inventive Principle:

Principle #35Parameter changes

3Reliability

If the network configures multiple measurement objects and frequent measurement intervals to ensure reliable connectivity, then the reliability is improved, but the power consumption increases causing performance degradation

Engineering Contradiction:

Improvenetwork connectivityVSAvoidUE power consumption

Core Design Contradiction:

ReliabilityVSPower

Solution Approach 1:

The patent implements a feedback mechanism where the UE monitors its thermal state and communicates overheating conditions to the network. The network then adjusts RRM measurement configurations based on this feedback, creating a closed-loop system that balances reliability requirements with thermal constraints. This feedback-driven approach allows the system to maintain connectivity reliability while adapting power consumption to thermal capabilities.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent applies partial action by selectively reducing RRM measurements based on UE overheating status. When overheating is detected, the UE transmits an overheating assistance indication to the network, which then relaxes RRM measurement requirements partially rather than completely disabling them. This maintains essential connectivity while reducing power-consuming measurements that contribute to overheating.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS11510209B2Overheating triggered radio resource management (RRM) relaxation

Publication Date: 2022.11.22 QUALCOMM INC

AI summary

Methods, systems, and devices for wireless communications are described. In some wireless communications systems, a user equipment (UE) may determine that its operating temperature exceeds an overheating condition threshold temperature, reducing overall device performance. To address the overheating condition, the UE may transmit an uplink control message containing UE assistance information to request a reconfiguration of one or more measurement parameters. In some cases, the UE may request to reduce one or more measurements associated with radio resource management (RRM). The UE may receive a downlink control message from a base station which indicates a reconfiguration of the measurement parameters, and the UE may implement the reconfiguration to mitigate the overheating.