PUCCH Repetition Indication for Wireless Uplink Control
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing repetition indications for Physical Uplink Control Channel (PUCCH) messages, particularly in determining the number of repetitions and types of repetition, which affects coverage and resource utilization.
Innovation Solution
Implementing an implicit and explicit mechanism for indicating the number of PUCCH repetitions and repetition types, allowing for back-to-back repetitions and adjusting current overlapping rules, to enhance PUCCH processing and resource management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the number of PUCCH repetitions is increased to improve message reliability, then coverage and reliability are improved, but resource utilization deteriorates due to increased overhead
Solution Approach 1:
The patent implements dynamic adjustment of PUCCH repetition numbers based on real-time channel conditions and message priorities. The wireless node determines the number of repetitions adaptively rather than using fixed configurations, allowing the system to increase repetitions only when necessary for reliability while minimizing resource consumption in good channel conditions.
Solution Approach 2:
The patent changes the parameter of repetition number from a static configuration to a dynamically determined value based on channel quality indicators and message importance. This parameter change enables the system to optimize the trade-off between reliability and resource utilization by adjusting repetitions according to actual network conditions.
2Loss of information
If implicit mechanisms are used to indicate repetition numbers, then signaling overhead is reduced, but measurement precision deteriorates due to lack of explicit information
Solution Approach 1:
The patent introduces an intermediary mechanism where the repetition number is indirectly indicated through reference to pre-configured tables or patterns rather than direct explicit signaling. This intermediary approach reduces signaling overhead while maintaining sufficient precision through the structured relationship between the indicator and the actual repetition number.
3Productivity
If back-to-back PUCCH repetitions are implemented, then processing efficiency is improved, but device complexity increases due to additional processing requirements
Solution Approach 1:
The patent prepares processing resources in advance for back-to-back repetitions by pre-allocating buffers and configuring processing chains before the actual repetitions occur. This preliminary action enables efficient back-to-back processing without requiring complex dynamic resource allocation during the repetition sequence, thereby reducing actual processing complexity.
Data Source
AI summary
A wireless node comprising a radio, and a processor operably coupled to the radio, wherein the processor is configured to determine a number of physical uplink control channel (PUCCH) resource repetitions for transmitting a PUCCH message; and wherein the radio is configured to transmit an indication, to a wireless device, of the number of PUCCH repetitions for a PUCCH message, and receive repetitions of the PUCCH message from the wireless device based on the number of PUCCH repetitions.