Uplink Control Channel Spatial Relation Configuration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communications, user equipment (UE) faces challenges in configuring spatial relation information for uplink control channel repetitions across multiple component carriers, leading to inefficiencies in transmission reliability and coverage.
Innovation Solution
The UE applies spatial relation information to uplink control channel repetitions based on rules, either using the same or different spatial relation information for each repetition, as scheduled by the base station, to ensure accurate transmission across multiple component carriers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the UE uses the same spatial relation information for all uplink control channel repetitions across multiple component carriers, then the configuration complexity is reduced, but the transmission reliability and coverage may be compromised
Solution Approach 1:
The patent segments spatial relation information configuration by component carrier, allowing the UE to apply different spatial relation information to different component carriers. This segmentation enables optimized transmission reliability for each carrier while maintaining manageable configuration complexity through structured rules.
Solution Approach 2:
The patent introduces dynamic spatial relation information indication through downlink control information (DCI), allowing the base station to flexibly indicate which spatial relation information should be applied to each uplink control channel repetition. This dynamic approach adapts to varying channel conditions and reliability requirements across different component carriers.
2Reliability
If the base station indicates different spatial relation information for each uplink control channel repetition in control signaling, then the transmission reliability is improved, but the signaling overhead increases
Solution Approach 1:
The patent applies local quality by allowing different spatial relation information to be applied to different component carriers based on their specific channel conditions and requirements. This enables targeted optimization of transmission reliability for each carrier without uniformly increasing signaling overhead across all carriers.
Solution Approach 2:
The patent creates a universal framework where a single set of spatial relation information configurations can serve multiple component carriers, and the same DCI mechanism can indicate spatial relation information for different uplink control channel repetitions across different carriers, reducing overall signaling overhead.
3Reliability
If the UE applies spatial relation information per frequency band or per component carrier subgroup, then the transmission coverage is improved, but the configuration complexity increases
Solution Approach 1:
The patent introduces a new dimension of organization by grouping component carriers into subgroups or frequency bands, and applying spatial relation information at this intermediate level. This dimensional organization improves coverage by accounting for frequency-selective fading while controlling complexity through hierarchical configuration.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A base station may schedule uplink control channel repetitions for a user equipment (UE) on multiple component carriers (CCs). The UE may determine spatial relation information to apply to each uplink control channel repetition based on a rule, where the rule specifies for the UE to apply same spatial relation information to the repetitions or different spatial relation information to the repetitions. In some cases, the UE may use spatial relation information from a first uplink control channel repetition (e.g., per-frequency band, per-CC subgroup, or for each of the uplink control channel repetitions). In some other cases, the base station may indicate different spatial relation information for each uplink control channel repetition in control signaling. The UE may transmit the uplink control channel repetitions using the spatial relation information.