Bandwidth Part Grouping for Switching Delay Optimization
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Solution Overview
Problem
Wireless communication systems face inefficiencies in bandwidth part switching due to prolonged switching delays, leading to reduced resource utilization and scheduling delays, as existing techniques assume uniform switching times for all bandwidth part switches without considering intra-group and inter-group switching delays.
Innovation Solution
The implementation of grouping bandwidth parts into sets with distinct intra-group and inter-group switching delays, where intra-group delays are shorter, allowing for faster switching within groups and improving resource utilization by scheduling UE to perform more intra-group hops.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If uniform switching delay is used for all bandwidth part switches, then system complexity is reduced, but resource utilization deteriorates due to prolonged switching gaps
Solution Approach 1:
The patent segments bandwidth parts into different groups (first group and second group) with different switching delay characteristics. BWPs in the first group have shorter switching delays among themselves, while BWPs in the second group have longer switching delays. This segmentation allows the system to manage switching delays more efficiently by applying group-specific delay values rather than a single uniform delay, thereby reducing resource utilization deterioration while maintaining manageable system complexity.
Solution Approach 2:
The patent applies local quality by assigning different switching delay characteristics to different groups of bandwidth parts. Specifically, intra-group switching delays for the first group are set to be shorter than intra-group switching delays for the second group. This localized differentiation optimizes resource utilization for frequently switched BWPs (first group) while maintaining appropriate delay management for less frequently switched BWPs (second group), resolving the contradiction between complexity and productivity.
2Productivity
If faster switching is implemented between certain bandwidth parts, then resource utilization improves, but switching delay management complexity increases
Solution Approach 1:
The patent segments bandwidth parts into groups with different switching delay characteristics, allowing faster switching (shorter delays) within the first group while maintaining longer delays for the second group. This segmentation enables the system to achieve improved resource utilization through selective fast switching without requiring complex individualized delay management for every BWP, as the grouping structure provides a manageable level of abstraction.
Solution Approach 2:
The patent implements dynamic switching delay management by configuring different intra-group switching delays based on BWP group characteristics. The system can adaptively apply shorter delays for the first group (where faster switching is beneficial) and longer delays for the second group (where switching is less frequent or more resource-intensive). This dynamic approach improves resource utilization while keeping configuration complexity manageable through group-based abstraction.
3Productivity
If bandwidth part switching is performed frequently to improve spectrum utilization, then network throughput improves, but switching delays increase
Solution Approach 1:
The patent segments bandwidth parts into groups where the first group is optimized for frequent switching with shorter intra-group delays. By configuring BWPs in the first group to have shorter switching delays, the system enables more frequent switching among these BWPs without proportionally increasing overall switching delay losses. This segmentation allows the system to achieve improved network throughput through frequent switching while mitigating time losses through group-specific delay optimization.
Solution Approach 2:
The patent applies local quality by setting shorter intra-group switching delays specifically for the first group of BWPs that are candidates for frequent switching. This localized delay reduction allows frequent switching among first-group BWPs to improve network throughput without incurring proportional increases in switching delay losses. The differentiated delay management resolves the contradiction by optimizing for throughput in frequently accessed BWPs while maintaining appropriate delay management for other BWPs.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a configuration for a set of bandwidth part groups including an intra-group switching delay and an inter-group switching delay, where the intra-group switching delay is smaller than the inter-group switching delay. The UE may communicate with a base station on a first bandwidth part of a first bandwidth part group of the set of bandwidth part groups. The UE may switch to a second bandwidth part of the first bandwidth part group based at least in part on the intra-group switching delay, or the UE may switch to a third bandwidth part of a second bandwidth part group based at least in part on the inter-group switching delay. The UE may communicate with the base station on the second bandwidth part or the third bandwidth part based on switching.