PUSCH UCI Multiplexing With CG-UCI Priority Over HARQ Feedback
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing window size adaptation for wideband operation in NR unlicensed spectrum, particularly in the terahertz bands, which are characterized by severe path loss and atmospheric absorption, impacting signal transmission distance and coverage.
Innovation Solution
The implementation of window size adaptation mechanisms in pre-5G or 5G communication systems, including user equipment and base station methods, to optimize channel access and multiplexing of control information channels, such as PDCCH and PUSCH, through adaptive listen-before-talk (LBT) procedures and dynamic resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If window size adaptation is implemented for wideband operation in NR unlicensed spectrum, then spectral efficiency and network performance are improved, but device complexity and implementation difficulty increase
Solution Approach 1:
The patent implements dynamic window size adaptation where the LBT window size is adjusted based on channel conditions and traffic requirements. The system transitions from static to dynamic parameter adjustment, allowing the window size to vary adaptively to optimize spectral efficiency while managing complexity through structured adaptation rules
Solution Approach 2:
The patent changes the parameter of LBT window size dynamically based on channel occupancy time, traffic type, and channel conditions. By modifying this key parameter adaptively, the system achieves improved spectral efficiency and network performance without requiring complete system redesign
2Ease of operation
If adaptive LBT procedures and dynamic resource allocation are implemented, then channel access optimization is achieved, but processing time and computational requirements increase
Solution Approach 1:
The patent performs preliminary channel assessments and pre-calculates optimal LBT window sizes based on historical channel conditions and traffic patterns. By preparing adaptation parameters in advance, the system reduces real-time processing requirements and enables faster channel access decisions
Solution Approach 2:
The patent implements feedback mechanisms where channel occupancy measurements and transmission outcomes are used to adjust subsequent LBT window sizes. This closed-loop approach optimizes channel access over time while distributing computational load across multiple time instances rather than requiring intensive real-time processing
3Productivity
If multiplexing of control information channels is enhanced, then resource utilization is improved, but signal transmission reliability deteriorates due to severe path loss and atmospheric absorption in terahertz bands
Solution Approach 1:
The patent segments control information into different priority levels and multiplexing stages, with critical control signals transmitted with higher reliability guarantees. By dividing control information transmission into segments with different protection levels, the system achieves improved overall resource utilization while maintaining reliability for essential control functions
Solution Approach 2:
The patent applies different multiplexing strategies and protection levels to different control information channels based on their specific requirements. Critical control signals receive enhanced protection and dedicated resources, while less critical information can utilize more aggressive multiplexing, achieving optimized resource utilization without compromising essential transmission reliability
Data Source
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AI summary
The present disclosure relates to a 5G communication system or a 6G communication system for supporting higher data rates beyond a 4G communication system such as long term evolution (LTE). The methods and apparatus in a wireless communication system comprises: determining a number of bits for a PUSCH; generating a first set of bits for CG-UCI; generating a second set of bits for a HARQ feedback; multiplexing first set of bits for CG-UCI and second set of bits for HARQ feedback into PUSCH, if a sum of first and second set of bits does not exceed determined number of bits for PUSCH, wherein first set of bits for CG-UCI is multiplexed with a higher priority than second set of bits for HARQ feedback; and transmitting, to a BS over an uplink channel, PUSCH including multiplexed first and second set of bits for CG-UCI and HARQ feedback, respectively.