BWP Switching Interruption Reduction in Wireless UEs

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Solution Overview

Problem

In the NR Uu system, user equipment (UE) experiences interruptions during Bandwidth Part (BWP) switching operations between Uu BWP and SL BWP, leading to periods where Uu and SL communication cannot be performed simultaneously, causing inefficiencies in wireless communication.

Innovation Solution

A method for UE to perform communication on a first BWP and switch to a second BWP based on a pre-configured time period related to BWP switching, allowing for efficient SL communication by minimizing interruption periods during BWP switching.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the UE performs BWP switching between Uu BWP and SL BWP, then the UE can perform sidelink communication, but the UE experiences interruption periods where communication cannot be performed

Engineering Contradiction:

Improvesidelink communication capabilityVSAvoidinterruption period during BWP switching

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The patent applies preliminary action by having the UE determine whether to switch from the first BWP to the second BWP based on pre-configured time parameters before actual communication interruption occurs. The UE evaluates timing conditions in advance (using parameters like first time parameter and second time parameter) to decide on BWP switching, thereby minimizing interruption periods and ensuring continuous communication operations.

Inventive Principle:

Principle #10Preliminary action

2Adaptability or versatility

If the UE switches BWP based on real-time communication needs, then communication flexibility is improved, but switching delay and interruption increase

Engineering Contradiction:

Improvecommunication flexibilityVSAvoidBWP switching speed

Core Design Contradiction:

Adaptability or versatilityVSSpeed

Solution Approach 1:

The patent uses preliminary action by pre-evaluating timing conditions before BWP switching occurs. The UE determines whether to switch based on pre-configured time parameters (first time parameter and second time parameter) that are established in advance, rather than making real-time decisions during communication operations. This approach maintains communication flexibility while avoiding switching delays.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent ensures continuity of useful action by making the UE fall back to the first BWP if the determined switching condition is not met, thereby maintaining continuous communication operations. The UE continuously monitors communication needs and switching conditions, ensuring that communication never stops even when BWP switching is required, thus eliminating interruption periods.

Inventive Principle:

Principle #20Continuity of useful action

Data Source

PatentUS11818748B2Method and device for performing BWP switching in wireless communication system

Publication Date: 2023.11.14 LG ELECTRONICS INC

AI summary

Provided herein are a method for performing wireless communication on a bandwidth part (BWP) by a first apparatus and an apparatus for supporting the same. The method may include the steps of performing communication on a first BWP, changing the first BWP to a second BWP based on a time period related to the BWP, and performing communication on the second BWP.