PUCCH Resource Configuration Across Multiple TRPs to Avoid Collisions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In 5G systems, there is no effective solution for configuring uplink transmission resources when a base station transmits downlink data to a terminal through multiple transmitting points, leading to issues with PUCCH resource configuration and potential collisions due to non-ideal backhaul connections between multiple TRPs or panels.
Innovation Solution
A method and apparatus for configuring PUCCH resources by a base station and terminal, involving obtaining antenna capability and panel activation information, and transmitting PUCCH resource configuration information through RRC signaling or DCI, to manage PUCCH resources for each transmitting point, including time and frequency offsets to avoid collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple transmitting points are used for downlink transmission, then coverage area and reliability are improved, but PUCCH resource configuration becomes complex and resource collisions occur
Solution Approach 1:
The patent segments the PUCCH resource configuration by associating each transmitting point with a unique transmitting point index. The terminal device configures separate PUCCH resources for each transmitting point based on these indices, dividing the overall resource configuration into manageable per-transmitting-point units. This resolves the contradiction by maintaining reliability through multiple transmitting points while reducing configuration complexity through structured segmentation.
Solution Approach 2:
The patent introduces a new dimension for resource differentiation by using time-domain offsets specific to each transmitting point. When PUCCH resources overlap in frequency and code domains, the system resolves conflicts by applying transmitting point-specific time offsets, effectively moving the resolution to a time dimension. This allows multiple transmitting points to share resources without collision while maintaining clear configuration rules.
2Measurement precision
If PUCCH resources are configured for each transmitting point, then uplink feedback accuracy is improved, but resource overhead and scheduling complexity increase
Solution Approach 1:
The patent merges PUCCH resource configurations from multiple transmitting points by allowing the terminal to select and combine resources based on receiving signal strength. When multiple PUCCH resources are configured, the terminal identifies the strongest signal and uses the corresponding PUCCH resource, merging multiple configuration options into a single optimal selection. This maintains feedback accuracy while reducing actual resource overhead by not simultaneously activating all configured resources.
Solution Approach 2:
The patent dynamically changes PUCCH resource parameters based on channel conditions and transmitting point performance. The system adjusts which PUCCH resources are actively used based on signal strength measurements and transmitting point indices, changing the effective resource configuration without redefining the entire resource set. This maintains high feedback accuracy by adapting to conditions while controlling overhead through selective activation.
3Productivity
If panel activation information is obtained and used for configuration, then resource allocation efficiency is improved, but information processing and signaling overhead increase
Solution Approach 1:
The patent applies preliminary action by obtaining panel activation information in advance of PUCCH resource configuration. The base station receives the terminal's panel capability and activation status before configuring PUCCH resources, allowing it to pre-optimize the resource allocation based on the terminal's actual hardware state. This improves resource allocation efficiency by avoiding mismatched configurations while managing signaling overhead through a single upfront information exchange rather than continuous updates.
Data Source
Figure 1~2
Figure 3~4
Figure 5~7
AI summary
The present application relates to the technical field of communications, and relates to a random access method and apparatus, and a storage medium. The method is executed by a terminal, and a base station device comprises N sending points, where N is an integer greater than or equal to 2. The method comprises: sending PUCCH resource configuration information to the terminal, the PUCCH resource configuration information comprising configuration sub-information respectively corresponding to the N sending points, and the configuration sub-information being used for indicating a PUCCH resource configured by the corresponding sending point for the terminal. In the present solution, a base station device having N sending points sends, to a terminal, PUCCH resource configuration information comprising configuration sub-information respectively corresponding to the N sending points, wherein each piece of configuration sub-information indicates a PUCCH resource configured by the corresponding sending point for the terminal; thus, a solution for configuring PUCCH resources for a terminal respectively by means of multiple sending points in a base station device is provided, and PUCCH resource scheduling scenarios are expanded.