PUCCH Repetition Configuration via Resource Index Indication
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Solution Overview
Problem
Current PUCCH repetition configurations in wireless communication systems rely on RRC signaling, leading to resource wastage and adverse effects on PUSCH transmission performance, as they do not allow dynamic configuration without increasing DCI overhead.
Innovation Solution
A method to dynamically indicate PUCCH repetitions by using a predefined rule to determine and configure the number of repetitions for each PUCCH resource, allowing the base station to adjust PUCCH configurations without increasing DCI overhead, through a PUCCH resource indicator in the downlink control information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If PUCCH repetition configuration is done through RRC signaling, then the configuration is stable and reliable, but the system cannot dynamically adjust PUCCH repetitions without increasing DCI overhead
Solution Approach 1:
The patent pre-configures multiple PUCCH resources with different repetition numbers through RRC signaling before actual transmission. The base station selects appropriate resources from these pre-configured options based on current channel conditions, achieving dynamic adjustment without real-time signaling overhead.
Solution Approach 2:
The patent introduces PUCCH resource indicators as intermediaries that map to pre-configured PUCCH resources. These indicators enable the base station to dynamically select and indicate specific repetition configurations without directly transmitting configuration parameters, thus avoiding DCI overhead increase.
2Reliability
If the number of PUCCH repetitions is increased to improve uplink control information transmission reliability, then transmission reliability improves, but uplink resource utilization efficiency deteriorates
Solution Approach 1:
The patent enables dynamic adjustment of PUCCH repetition numbers based on real-time channel conditions and traffic requirements. The base station can flexibly select from multiple pre-configured repetition options, increasing repetitions only when necessary for reliability while maintaining efficient resource utilization under good channel conditions.
Solution Approach 2:
The patent changes the repetition parameter dynamically by selecting different pre-configured PUCCH resources with different repetition numbers. This allows the system to adapt the repetition count to actual transmission needs, optimizing the balance between reliability and resource efficiency.
3Device complexity
If PUCCH repetitions are configured semi-persistently, then configuration complexity is reduced, but the system cannot adapt to varying channel conditions and transmission requirements
Solution Approach 1:
The patent segments the PUCCH configuration into multiple independent resource options, each with different repetition numbers and parameters. The base station selects appropriate segments (resources) based on current conditions, maintaining simple semi-persistent configuration while achieving adaptability through selection among segmented options.
Data Source
AI summary
The present disclosure relates to a method, device and system for indicating and obtaining a number of PUCCH repetitions. The method includes: configuring a plurality of physical uplink control channel (PUCCH) resources for a user equipment (UE) through radio resource control signaling; determining a number of repetitions corresponding to each PUCCH resource of the plurality of PUCCH resources by using a predefined rule; determining a current number of repetitions of a PUCCH transmission by the UE; determining a current resource index number of a resource for the PUCCH transmission by the UE corresponding to the current number of repetitions; and sending the current resource index number to the UE, to indicate the current number of repetitions, so that UE decodes the received current resource index number and determines the current number of repetitions.