RedCap UE Rapid BWP Switching Capability Indication
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Solution Overview
Problem
Low-capability user equipment (RedCap UE) experiences long switching delays during bandwidth part (BWP) switching, affecting transmission performance, and there is a need for a suitable BWP switching method.
Innovation Solution
A method for indicating capability, where the RedCap UE sends indication information to a network device about its ability to support rapid BWP switching, which involves switching the central frequency point without changing other parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If RedCap UE performs traditional BWP switching, then bandwidth adaptation is achieved, but switching delay increases and transmission performance deteriorates
Solution Approach 1:
The patent changes the BWP switching mechanism by introducing rapid BWP switching that only changes the central frequency point while keeping other parameters unchanged. This parameter change approach allows the UE to switch BWPs rapidly without the full reconfiguration delay of traditional switching, directly resolving the contradiction between achieving bandwidth adaptation and minimizing switching delay
Solution Approach 2:
The patent segments the BWP switching process into two independent parts: changing the central frequency point and changing other parameters. By allowing rapid switching of only the central frequency point while keeping other parameters fixed, the switching process is divided into manageable segments that can be executed quickly, reducing overall switching delay
2Loss of time
If RedCap UE supports rapid BWP switching, then switching delay is reduced, but device complexity increases
Solution Approach 1:
The patent introduces a capability indication parameter that tells the network whether the RedCap UE supports rapid BWP switching. This simple parameter change approach allows the UE to indicate its capability without adding complex device structures, resolving the contradiction between reducing switching delay and maintaining device simplicity
Solution Approach 2:
The patent uses indication information as an intermediary between the UE and the network device. This intermediary mechanism allows the UE to communicate its rapid BWP switching capability without requiring complex direct control mechanisms, simplifying the overall system while enabling rapid switching where supported
3Reliability
If network device configures BWP switching without knowing UE capability, then configuration flexibility is maintained, but transmission reliability decreases
Solution Approach 1:
The patent implements preliminary capability indication before BWP switching configuration. The UE sends indication information about its rapid BWP switching capability in advance, allowing the network device to know the UE's capabilities before configuring switching parameters. This preliminary action ensures reliable configuration while maintaining simple device structures
Solution Approach 2:
The patent establishes a feedback mechanism where the UE provides capability information to the network device. This feedback loop allows the network to adapt its BWP switching configuration based on actual UE capabilities, improving transmission reliability without requiring complex device architecture
Data Source
AI summary
A method for indicating capability includes: a reduced capability (RedCap) user equipment (UE) sending indication information to a network device, where the indication information indicates whether the RedCap UE has the capability for supporting rapid bandwidth part (BWP) switching, and the rapid BWP switching refers to BWP switching for changing central frequency point, such that the network device determines the capability supported by the RedCap UE.