BWP Activation Control for 5G NR Power Reduction

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Solution Overview

Problem

In the 5G NR system, user equipment (UE) faces challenges in managing the activation of multiple bandwidth parts (BWPs) due to increased power consumption when all supported BWPs are simultaneously activated.

Innovation Solution

A method for controlling the activation of BWPs, involving receiving and saving BWP configuration information from a base station, receiving a BWP activation command, and performing BWP activation based on the indicated BWP identifier, thereby allowing flexible control over activated states of multiple BWPs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If all BWPs are simultaneously activated to support high system bandwidth, then system throughput is improved, but power consumption increases

Engineering Contradiction:

Improvesystem throughputVSAvoidpower consumption

Core Design Contradiction:

ProductivityVSUse of energy by moving object

Solution Approach 1:

The patent implements dynamic BWP activation control where the network can dynamically activate or deactivate specific BWPs based on service requirements. The UE receives BWP activation/deactivation commands from the network, allowing the system to adaptively adjust which bandwidth parts are active, thereby balancing throughput requirements with power consumption constraints.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If multiple BWPs are activated to support flexible bandwidth allocation, then adaptability is improved, but device complexity increases

Engineering Contradiction:

Improvebandwidth allocation flexibilityVSAvoidBWP management complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements a feedback-based BWP management mechanism where the network monitors UE service requirements and sends appropriate activation/deactivation commands. This centralized control approach simplifies UE-side complexity by offloading the decision-making to the network, which has global visibility of resource allocation and service demands.

Inventive Principle:

Principle #23Feedback

3Adaptability or versatility

If all supported BWPs are activated for narrowband user terminals, then access flexibility is improved, but power consumption increases

Engineering Contradiction:

Improveaccess flexibilityVSAvoidpower consumption

Core Design Contradiction:

Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The patent enables different activation states for different BWPs based on local service requirements. Instead of uniformly activating all BWPs, the system selectively activates only those BWPs needed for specific services or user terminals, allowing narrowband terminals to access appropriate bandwidth resources while maintaining lower power consumption by leaving other BWPs deactivated.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS12301517B2Method for controlling activation of BWP, user equipment and base station

Publication Date: 2025.05.13 VIVO MOBILE COMM CO LTD

AI summary

A method for controlling activation of a bandwidth part (BWP), a user equipment, and a base station are provided. The method includes: receiving BWP configuration information transmitted by a base station; wherein the BWP configuration information is used to indicate a default BWP corresponding to each component carrier. After receiving the BWP configuration information transmitted by the base station, the method further comprises: receiving a component carrier deactivation signaling transmitted by the base station; and deactivating, based on the component carrier deactivation signaling, a third target component carrier, or a third target component carrier and all activated BWPs on the third target component carrier.