PUCCH Repetition Before Dedicated Configuration for Uplink Robustness
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Solution Overview
Problem
Existing wireless communication systems face challenges in ensuring accurate signal transmission and reducing power consumption in user equipment devices, particularly in scenarios where dedicated physical uplink control channel resource configuration is not yet established.
Innovation Solution
A cellular base station provides configuration information for physical uplink control channel repetition before dedicated configuration, allowing wireless devices to perform repeated transmissions to enhance coverage and reliability, such as in response to a random access channel procedure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If PUCCH transmission with repetition is performed before dedicated configuration, then transmission robustness is improved, but device complexity increases
Solution Approach 1:
The base station provides configuration information in advance (before dedicated PUCCH resource configuration) that indicates whether PUCCH repetition is supported and how to perform repetitions. This preliminary configuration enables the UE to perform robust PUCCH transmissions with repetition before dedicated configuration is complete, resolving the contradiction by preparing the necessary parameters and indicators upfront.
2Reliability
If PUCCH transmission with repetition is performed before dedicated configuration, then transmission robustness is improved, but power consumption increases
Solution Approach 1:
The system dynamically adapts the PUCCH transmission strategy based on the configuration information received from the base station. The UE can switch between repeated transmissions (for robustness) and single transmissions (for power saving) depending on the specific scenario and base station indication, allowing optimal power consumption while maintaining transmission robustness when needed.
3Reliability
If configuration information for PUCCH repetition is provided, then transmission reliability is improved, but signaling overhead increases
Solution Approach 1:
The configuration information provided by the base station serves multiple functions: it indicates whether PUCCH repetition is supported, provides parameters for performing repetitions, and guides the UE behavior before dedicated configuration. This multi-functional configuration approach improves transmission reliability while minimizing signaling overhead by consolidating multiple control functions into a single information set.
Data Source
AI summary
This disclosure relates to techniques for performing physical uplink control channel repetitions before dedicated physical uplink control channel resource configuration in a wireless communication system. A wireless device may receive configuration information indicating that physical uplink control channel repetition before dedicated physical uplink control channel resource configuration is supported. The wireless device may perform a physical uplink control channel transmission with repetition before dedicated physical uplink control channel resource configuration based at least in part on the configuration information.