PUCCH Transmission Repetition for Blockage-Resilient HARQ Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless communication systems face challenges in maintaining robust PUCCH transmission due to unpredictable blockage of beamforming signals, particularly in high-frequency bands, leading to unreliable HARQ acknowledgements.
Innovation Solution
Implementing a transmission repetition mode that dynamically configures multiple PUCCH transmissions using different beams, with the base station controlling the number of repetitions, time locations, and beam selection through DCI or CSI report configurations, to enhance robustness against blockage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If single PUCCH transmission is used, then device complexity is reduced, but reliability deteriorates due to beam blockage
Solution Approach 1:
The system dynamically configures the transmission repetition mode through DCI or CSI report configurations, allowing the number of repetitions, time locations, and beam selection to be adjusted in real-time based on channel conditions and blockage scenarios, transforming a static single-transmission system into a dynamic multi-transmission system that adapts to varying reliability requirements
Solution Approach 2:
The invention changes multiple parameters simultaneously including the number of transmission repetitions (T), time offset values (K), and beamforming parameters to create diverse transmission opportunities. By modifying these parameters, the system ensures that at least one transmission opportunity avoids blockage, thereby improving reliability without requiring permanent system complexity
2Reliability
If multiple PUCCH transmissions with diverse beams are implemented, then reliability is improved, but device complexity increases
Solution Approach 1:
The transmission process is segmented into multiple independent transmission opportunities, each with potentially different beamforming configurations and time locations. This segmentation allows the system to distribute the reliability burden across multiple attempts rather than relying on a single complex transmission, reducing the effective complexity per transmission while maintaining overall reliability
Solution Approach 2:
The system creates multiple copies of the PUCCH transmission with different beamforming parameters and time offsets. These copies serve as redundant attempts to deliver the HARQ feedback, ensuring that at least one copy succeeds despite blockage. This copying approach improves reliability without requiring fundamentally new transmission mechanisms
3Reliability
If transmission repetitions are configured, then reliability improves, but time resources are consumed
Solution Approach 1:
The system employs periodic transmission opportunities with configured time offsets between repetitions. Rather than continuous transmission, the system uses periodic attempts spaced at optimized intervals, allowing the channel to be utilized efficiently while providing multiple chances for successful delivery. This periodic approach balances reliability improvement against time consumption by spacing repetitions optimally
Data Source
AI summary
In one embodiment, a method may include performing, by a wireless communication device, an uplink channel transmission for a number of times, according to a number of transmission beams of the wireless communication device, for at least one resource, wherein the number of times of the uplink channel transmission to be performed is received by the wireless communication device from a wireless communication node. The transmission beams of the number of transmission beams may be applied in cyclic order on the times of the uplink channel transmission to be performed, or a respective one of the transmission beams may be applied to each of a plurality of groups, where a number of groups in the plurality of groups is equal to a number of the transmission beams.