Uplink Control Channel Resource Grouping for Spatial Relation Control
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Solution Overview
Problem
In future radio communication systems, the appropriate configuration of spatial relations for uplink transmission is challenging due to the increasing number of candidates, leading to potential deterioration in communication quality.
Innovation Solution
A terminal that receives information on the number and indices of uplink control channel resource groups and determines the corresponding relation between these groups and resources, using spatial relation information for each group to manage uplink control channel transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the number of spatial relation candidates is increased to provide more beam options for uplink transmission, then the adaptability and versatility of the system is improved, but the device complexity and difficulty of configuration increase
Solution Approach 1:
The patent segments the uplink control channel resources into multiple resource groups, where each group is associated with a specific spatial relation candidate. This segmentation allows the system to manage multiple beam options without overwhelming configuration complexity, as each group can be independently configured and activated based on channel conditions.
Solution Approach 2:
The patent implements dynamic spatial relation configuration where the network can activate or deactivate specific spatial relation candidates through downlink control information (DCI). This dynamic approach allows the system to adapt to changing channel conditions in real-time without requiring permanent configuration of all possible beam options, thus maintaining adaptability while controlling complexity.
2Reliability
If multiple spatial relation candidates are configured for uplink control channels, then the reliability of communication is improved through diversity, but the difficulty of detecting and measuring the appropriate spatial relation increases
Solution Approach 1:
The patent employs feedback mechanisms where the network measures the quality of uplink transmissions using different spatial relations and provides feedback through DCI to indicate which spatial relation candidate should be activated. This feedback loop enables the system to reliably select the best beam based on actual channel measurements while keeping the selection process simple for the terminal.
Solution Approach 2:
The patent performs preliminary configuration of multiple spatial relation candidates during connection setup, with each candidate pre-associated with specific uplink control channel resource groups. This preliminary action prepares the system in advance with multiple beam options, enabling rapid and reliable spatial relation selection when channel conditions change without requiring complex real-time measurements.
3Manufacturing precision
If spatial relation configuration is made more granular to improve communication quality, then the manufacturing precision of the configuration is improved, but the device complexity increases
Solution Approach 1:
The patent introduces a group dimension to organize uplink control channel resources, creating a hierarchical structure where resource groups are mapped to spatial relation candidates. This dimensional organization allows precise control over which spatial relation is used for specific resources without requiring complex per-resource configuration, thus achieving high configuration precision while managing device complexity through structured organization.
Data Source
AI summary
A terminal according to one aspect of the present disclosure includes: a receiving section that receives information relating to at least one of the number and indices of uplink control channel resource groups; and a control section that determines a corresponding relation between indices of the uplink control channel resource groups and a plurality of uplink control channel resources included in an uplink control channel resource set, based on the information.