RRC Triggered Bandwidth Part Switching Overlap

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Solution Overview

Problem

Current radio access network (RAN) architectures face challenges in efficiently managing bandwidth and optimizing communication protocols for next-generation wireless devices.

Innovation Solution

The implementation of bandwidth parts (BWP) in a multicarrier communication system, which allows for dynamic configuration and management of bandwidth resources, enabling flexible and efficient communication protocols.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If bandwidth parts (BWP) are dynamically configured and managed, then flexibility and efficiency of bandwidth management are enhanced, but device complexity and protocol management overhead increase

Engineering Contradiction:

Improvebandwidth management flexibilityVSAvoidprotocol management complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent segments the total carrier bandwidth into multiple bandwidth parts (BWPs), each with distinct configuration parameters. This segmentation enables independent management and activation of specific bandwidth portions, providing flexibility to adapt to different service requirements without managing the entire bandwidth continuously.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements dynamic BWP configuration where bandwidth parts can be activated, deactivated, and switched based on real-time network conditions and service requirements. The network can trigger BWP switching through RRC signaling, and the UE can switch between configured BWPs dynamically, enabling adaptive bandwidth management.

Inventive Principle:

Principle #15Dynamics

2Productivity

If RRC triggered BWP switching is implemented, then communication protocol optimization is achieved, but signaling overhead and switching delay increase

Engineering Contradiction:

Improvecommunication efficiencyVSAvoidBWP switching delay

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The patent pre-configures multiple bandwidth parts with different parameter sets before actual switching is needed. The network provides BWP configuration information in advance through RRC signaling, so when switching is triggered, the UE can quickly activate a pre-configured BWP without extensive real-time negotiation, reducing switching delay.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements a feedback mechanism where the network monitors UE performance and triggers BWP switching based on measured conditions. The network can determine when switching is beneficial and initiate the switching process through RRC triggered mechanisms, optimizing communication efficiency based on actual network state.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS12301512B2Radio resource control triggered bandwidth part switching

Publication Date: 2025.05.13 OFINNO LLC

AI summary

A wireless device may receive a first radio resource control (RRC) reconfiguration message triggering a first active bandwidth part (BWP) switching to a first BWP of a first cell. The wireless device may receive a second RRC reconfiguration message triggering a second active BWP switching to a second BWP of a second cell. The second active BWP switching may at least partially overlap in time with the first active BWP switching. Based on the overlapping, the wireless device may communicate using the second BWP in a first slot after a time duration. The time duration may be determined based on a duration of the first active BWP switching.