Subband Full Duplex Uplink Transmission Prioritization
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G NR, face challenges in optimizing uplink transmissions when they overlap with downlink reference signals, leading to potential performance degradation due to prioritization of downlink signals.
Innovation Solution
The implementation of SBFD-aware wireless nodes that can prioritize either receiving a downlink SSB or transmitting an uplink signal based on network-configured parameters, allowing for flexible scheduling of uplink transmissions even when they overlap with downlink reference signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If downlink reference signals are prioritized over uplink transmissions, then downlink signal reception quality is improved, but uplink transmission performance deteriorates
Solution Approach 1:
The system dynamically adjusts the priority between downlink reference signal reception and uplink transmission based on network-configured parameters and current transmission conditions. The wireless node can flexibly switch between prioritizing downlink signals and allowing uplink transmissions depending on the configured conditions, resolving the static contradiction through dynamic adaptability.
Solution Approach 2:
The network configures specific parameters that determine when uplink transmissions should be prioritized despite overlapping with downlink reference signals. By changing the configuration parameters, the system can adjust the balance between downlink reception quality and uplink transmission performance without hardware modifications.
2Productivity
If uplink transmissions are allowed during overlaps with downlink reference signals, then uplink transmission efficiency is improved, but downlink signal reception quality deteriorates
Solution Approach 1:
The system uses dynamic condition-based rules to determine whether uplink transmissions occur during downlink reference signal overlaps. The network can configure different conditions under which uplink transmissions are permitted, allowing the system to adaptively balance uplink efficiency and downlink quality based on current network state.
3Adaptability or versatility
If flexible scheduling of uplink transmissions is implemented, then uplink transmission adaptability is improved, but system complexity increases
Solution Approach 1:
The network pre-configures the conditions and parameters that will govern uplink transmission behavior during downlink reference signal overlaps. By establishing these rules in advance through network configuration messages, the system achieves flexible adaptability without requiring complex real-time decision-making logic at the wireless node, thus limiting the increase in system complexity.
Data Source
AI summary
A wireless node may include one or more memories, individually or in combination, having instructions. The wireless node may include one or more processors, individually or in combination, configured to execute the instructions and cause the wireless node to: obtain an indication of one or more conditions associated with one or more uplink signals to be transmitted via one or more time resources that overlap with another one or more time resources associated with a downlink reference signal; and output, after obtaining the indication, uplink signaling for transmission via the one or more time resources that overlap with the other one or more time resources of the downlink reference signal.