PUCCH Repetition Modes for Beam Blockage Robustness
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Solution Overview
Problem
Current wireless communication systems face challenges in maintaining robust PUCCH transmission in high-frequency bands due to unpredictable beam blockage, leading to unreliable HARQ acknowledgments.
Innovation Solution
Implementing transmission repetition modes with multiple beams and time offsets for PUCCH transmissions, dynamically controlled by the base station using HARQ offset indications and CSI reports to enhance robustness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If single-beam PUCCH transmission is used, then device complexity is reduced, but reliability deteriorates due to unpredictable beam blockage in high-frequency bands
Solution Approach 1:
The patent implements dynamic transmission repetition modes where the base station configures multiple PUCCH resources with different time offsets and beam directions. The system dynamically selects between single transmission mode and repetition modes based on channel conditions, allowing adaptation to beam blockage scenarios while managing complexity through conditional activation rather than always-on complex mechanisms
Solution Approach 2:
The patent changes key transmission parameters including time offsets (k1 values), beam directions, and resource configurations to create diverse transmission opportunities. By modifying these parameters across multiple transmission attempts, the system overcomes beam blockage without requiring fundamentally new transmission mechanisms, thus improving reliability while controlling complexity growth
2Reliability
If multiple PUCCH transmissions with different time offsets are implemented, then reliability is improved through diversity, but loss of time increases due to multiple transmission attempts
Solution Approach 1:
The base station pre-configures multiple PUCCH resources with different time offsets during initial resource allocation. This preliminary configuration allows the UE to immediately select appropriate transmission opportunities without real-time decision delays, reducing the time penalty of multiple transmission attempts while maintaining reliability through pre-planned diversity
Solution Approach 2:
The patent employs periodic transmission opportunities with structured time offsets between repetitions. By organizing transmissions in periodic patterns with optimized intervals, the system balances the need for multiple attempts against time loss, ensuring reliable delivery while minimizing delay through carefully designed periodic structures
3Adaptability or versatility
If transmission repetition modes are configured, then adaptability is improved for blockage scenarios, but device complexity increases due to multiple beam configurations
Solution Approach 1:
The patent segments the transmission task into multiple independent PUCCH resources, each with specific beam directions and time offsets. This segmentation allows the system to target different spatial paths independently, improving adaptability to blockage while managing complexity by breaking down the overall transmission problem into manageable, pre-configured segments
Solution Approach 2:
The patent creates multi-functional PUCCH resources that can serve multiple purposes: initial transmission, repetition, fallback option, and beam diversity exploration. By designing resources with universal applicability across different scenarios, the system achieves high adaptability without proportionally increasing complexity, as the same resource structure serves multiple functions
Data Source
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AI summary
In one embodiment, a method performed by a wireless communication node includes configuring, by a wireless communication node, a transmission repetition mode and at least one resource for an uplink channel transmission of a wireless communication device, the transmission repetition mode indicating at least one of: a number of times of the uplink channel transmission to be performed, one or more multiplexing modes of the number of times of the uplink channel transmission to be performed, and one or more time locations of the number of times of the uplink channel transmission to be performed. The method includes transmitting, by the wireless communication node, the transmission repetition mode to the wireless communication device.