PUCCH Spatial Relation Grouping via MAC CE
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for indicating spatial relation information in 5G NR systems through Physical Uplink Control Channel (PUCCH) result in significant signaling overhead and delay due to individual indication per PUCCH resource, which is inefficient.
Innovation Solution
Configuring spatial relation information for a group of two or more PUCCH resources simultaneously using a single indication information, reducing the need for individual resource-specific signaling and introducing enhanced MAC CE formats that include group identifiers or omit resource identifiers to streamline the indication process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If spatial relation information is indicated individually for each PUCCH resource through MAC CE, then each PUCCH resource can be precisely controlled, but signaling overhead and processing delay increase significantly
Solution Approach 1:
The patent merges the indication of spatial relation information for multiple PUCCH resources into a single MAC CE element. Instead of indicating spatial relation for each PUCCH resource separately, the invention uses one indication information that applies to a group of PUCCH resources, thereby significantly reducing signaling overhead while maintaining precise control through group-based identification.
Solution Approach 2:
The patent creates a universal indication mechanism where a single MAC CE element can indicate spatial relation information for multiple PUCCH resources simultaneously. This multi-functional approach allows one indication information to serve multiple purposes (controlling multiple resources) without requiring separate indication elements for each resource.
2Measurement precision
If spatial relation information is indicated individually for each PUCCH resource through MAC CE, then each PUCCH resource can be precisely controlled, but processing delay increases
Solution Approach 1:
The patent merges multiple individual indication operations into a single MAC CE processing operation. By indicating spatial relation information for multiple PUCCH resources simultaneously in one MAC CE element, the base station reduces the number of processing steps and signaling transmissions required, thereby decreasing processing delay while maintaining precise spatial relation control.
3Adaptability or versatility
If 4 PUCCH resource sets with up to 128 PUCCH resources are configured, then comprehensive PUCCH resource management is achieved, but individual indication becomes inefficient
Solution Approach 1:
The patent segments the 128 PUCCH resources into groups (e.g., first group, second group) that can be indicated simultaneously through a single MAC CE element. This segmentation approach allows the system to maintain comprehensive resource management (supporting 4 resource sets with 128 resources) while reducing indication complexity by treating groups as single units rather than individual resources.
Solution Approach 2:
The patent combines multiple PUCCH resources into groups that can be indicated together through a single MAC CE element. This merging approach reduces the complexity of the indication mechanism by eliminating the need to process and signal each individual resource separately, while still providing comprehensive control over all 128 resources across 4 resource sets.
Data Source
Figure 1~3
Figure 4~6
Figure 7~9
AI summary
Provided are a method and device for indicating space-related information. The method comprises: a base station sending, to a terminal, indication information for space-related information of a physical uplink control channel (PUCCH), wherein the space-related information indicated by the indication information is applied to at least two PUCCH resources of the terminal or a group of PUCCH resources of the terminal, and the group of PUCCH resources comprises at least one PUCCH resource.