Scheduling-Free PUSCH Spatial Parameters for Multi-Panel Uplink
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Solution Overview
Problem
Existing communication systems face challenges in efficiently transmitting scheduling-free physical uplink shared channels (PUSCHs) due to the lack of effective methods for managing spatial parameters and overlapping transmissions in multi-antenna panel configurations.
Innovation Solution
The proposed solution involves configuring scheduling-free PUSCHs with different spatial parameters, including reference signal sets, TCI states, antenna panels, and control resource sets, allowing for simultaneous transmission on multiple panels without requiring DCI detection, and utilizing separate precoding and layer configurations to manage overlaps and interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If scheduling-free PUSCHs are transmitted on multiple antenna panels simultaneously, then spectrum efficiency is improved, but interference management and spatial parameter coordination become more complex
Solution Approach 1:
The patent segments the uplink transmission by associating different PUSCHs with different antenna panels, each having independent spatial parameters. This segmentation allows simultaneous transmission on multiple panels while managing interference through panel-specific spatial configurations, thereby improving spectrum efficiency without overwhelming complexity.
Solution Approach 2:
The patent applies local quality by configuring different spatial parameters (such as spatial relations, TCI states, or beam directions) for different antenna panels. Each panel can be optimized independently for its specific transmission characteristics, enabling interference management through localized spatial differentiation while maintaining high overall spectrum efficiency.
2Adaptability or versatility
If scheduling-free PUSCHs are configured with independent spatial parameters, then transmission flexibility is improved, but the risk of overlapping transmissions and interference increases
Solution Approach 1:
The patent applies preliminary anti-action by pre-configuring spatial parameters (spatial relations, TCI states, or beam directions) for different antenna panels before transmission. This preliminary configuration ensures that even when PUSCHs overlap in time-frequency resources, their spatial separation through pre-established beam directions prevents harmful interference, thus enabling transmission flexibility without increasing interference risk.
3Productivity
If multiple scheduling-free PUSCHs are transmitted simultaneously without DCI scheduling, then uplink transmission efficiency is improved, but spatial parameter configuration and coordination become more challenging
Solution Approach 1:
The patent applies preliminary action by pre-configuring spatial parameters (spatial relations, TCI states, or beam directions) for multiple antenna panels through higher-layer signaling before actual PUSCH transmission. This preliminary configuration enables simultaneous scheduling-free PUSCH transmissions with proper spatial coordination, improving uplink transmission efficiency while avoiding the complexity of real-time spatial parameter negotiation.
Data Source
AI summary
A wireless communication method includes: transmitting, by a terminal device, one or more scheduling-free PUSCHs, where the scheduling-free PUSCHs are associated with different spatial parameters.