PUCCH Repetition Configuration for Multi-TRP Pathloss Adaptation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing radio access network (RAN) technologies face challenges in efficiently configuring Physical Uplink Control Channel (PUCCH) transmissions and repetitions due to varying pathloss and blockage conditions across different transmission and reception points, leading to reduced reliability and coverage of Uplink Control Information (UCI) transmission.
Innovation Solution
The method involves configuring multiple PUCCH resources with distinct parameters and indexes for PUCCH transmissions and repetitions, allowing flexible allocation and mapping based on pathloss conditions, using explicit or implicit signaling to optimize resource utilization across multiple transmission and reception points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single PUCCH resource configuration is used for all transmissions, then device complexity is reduced, but reliability deteriorates due to varying pathloss conditions across different transmission and reception points
Solution Approach 1:
The patent segments the PUCCH resource configuration into multiple distinct configurations (first PUCCH resource configuration and second PUCCH resource configuration), each optimized for different transmission scenarios and pathloss conditions. This allows the system to select appropriate configurations based on current channel conditions, thereby improving reliability without requiring a single overly complex universal configuration.
Solution Approach 2:
Different PUCCH resource configurations are assigned to different transmission and reception points based on their specific pathloss characteristics. Each configuration is locally optimized for its intended transmission scenario, allowing the system to adapt to varying channel conditions at different locations rather than using a uniform configuration across all points.
2Adaptability or versatility
If multiple PUCCH resource configurations are implemented, then adaptability to different pathloss conditions improves, but device complexity increases
Solution Approach 1:
The patent implements dynamic selection of PUCCH resource configurations based on current transmission conditions and pathloss measurements. The system can adaptively switch between different configurations (first PUCCH resource, second PUCCH resource) depending on which best matches the current channel state, providing high adaptability while maintaining manageable complexity through structured selection criteria.
Solution Approach 2:
Different PUCCH resource configurations utilize different parameter sets (such as different number of PRBs, different symbols, different resource indexes) to adapt to varying pathloss conditions. By changing these parameters based on measured channel conditions, the system achieves versatility in handling different transmission scenarios without requiring complete redesign of the PUCCH framework.
3Reliability
If PUCCH resources are allocated without considering pathloss conditions, then resource allocation simplicity is maintained, but transmission coverage deteriorates
Solution Approach 1:
The patent performs preliminary configuration of multiple PUCCH resource configurations before actual transmission occurs. Each configuration is pre-prepared with specific parameters suitable for different pathloss conditions, allowing the system to quickly select the appropriate pre-configured resource without complex real-time calculations, thereby improving coverage while controlling allocation complexity.
Data Source
AI summary
A method and a first apparatus (102) comprising at least one processor (118), at least one memory (120) including computer program code, and at least one receiver (112), the at least one processor (118), the at least one memory (120), and the at least one receiver (112) configured with the computer program code to cause the first apparatus (102) at least to receive a first configuration and a second configuration or to receive an indication comprising a first configuration and a second configuration, to configure a Physical Uplink Control Channel, PUCCH, for a PUCCH transmission according to the first configuration for a first PUCCH resource, configure the first PUCCH resource or a second PUCCH resource for the PUCCH repetition according to the second configuration, wherein the PUCCH repetition is a repetition of the PUCCH transmission.