NR PUCCH Multiplexing with PUSCH for Spatial Parameter Conflicts
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Solution Overview
Problem
In New Radio (NR) systems, conflicts between physical uplink control channels (PUCCH) and physical uplink shared channels (PUSCH) in the time domain, as well as the reporting of power headroom reports (PHR) in multi-antenna panel scenarios, are unresolved issues.
Innovation Solution
A method for multiplexing UCI information carried in PUCCHs onto PUSCHs with the same spatial parameters and optimizing PUCCH transmission by discarding overlapping channels, along with reporting PHR corresponding to spatial parameter information in multi-antenna panel scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If UCI information carried in PUCCHs is multiplexed onto PUSCHs with the same spatial parameters, then spectral efficiency is improved, but transmission reliability deteriorates when no matching PUSCH with same spatial parameter exists
Solution Approach 1:
The patent introduces a spatial parameter as an intermediary matching criterion between PUCCH and PUSCH. When multiplexing UCI from PUCCH to PUSCH, the patent matches them based on spatial parameters (beam direction, antenna port) to ensure reliable transmission. If no PUSCH with matching spatial parameter exists, the PUCCH transmission is maintained separately, ensuring reliability while still enabling multiplexing opportunities when spatial parameters match.
2Productivity
If PUCCH and PUSCH are transmitted simultaneously in time domain, then transmission capacity is improved, but interference increases when they overlap without proper handling
Solution Approach 1:
The patent segments the uplink transmission by identifying overlapping PUCCH and PUSCH resources in the time domain. When overlap is detected, the patent applies multiplexing rules to combine UCI from PUCCH with data in PUSCH, or schedules them in different resource blocks. This segmentation and conditional multiplexing allows simultaneous transmission capacity while managing interference through proper resource allocation and combining rules.
3Measurement precision
If PHR is reported in multi-antenna panel scenarios, then power management accuracy is improved, but device complexity increases due to multiple spatial parameters
Solution Approach 1:
The patent applies local quality by reporting Power Headroom Reports (PHR) separately for different spatial parameters (antenna panels, beams). Each PHR corresponds to a specific spatial parameter, allowing precise power management for each transmission direction. The terminal device maintains multiple PHR values corresponding to different spatial parameters, enabling the network to allocate power efficiently per panel while the device manages complexity through structured reporting only when spatial parameters change.
Data Source
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AI summary
Embodiments of the present disclosure provide a method of wireless communication, a terminal device and a network device. For some PUCCHs that each has a conflict in a time domain and for which it is not possible to find a PUSCH associated with the same spatial parameter for multiplexing, a corresponding processing method is designed, thereby optimizing PUCCH transmission. In addition, in the embodiments of the present disclosure, the terminal device can report a PHR corresponding to spatial parameter information, so as to realize PHR reporting in a simultaneous transmission scenario of a multi-antenna panel.