Full-Slot Sidelink Detection for Mini-Slot Interference Control
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Solution Overview
Problem
Existing wireless communication systems face challenges in coordinating sidelink transmissions between user equipment (UEs) to improve throughput and communication reliability, particularly when mini-slot transmissions interfere with slot-based transmissions, leading to reduced gain control and increased latency.
Innovation Solution
UEs monitor sidelink resources for signaling parameters such as SCI and DMRS to determine whether to transmit mini-slot transmissions, comparing these parameters with configured thresholds to avoid interference and adjust transmission based on overlap and priority.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If mini-slot transmissions are allowed to interrupt slot-based transmissions, then transmission flexibility and throughput are improved, but interference between transmissions increases and communication reliability deteriorates
Solution Approach 1:
The transmitting UE performs preliminary detection by monitoring for SCI and measuring RSRP of slot-based transmissions before attempting to transmit a mini-slot transmission. This advance detection and decision-making prevents interference with ongoing slot-based transmissions while allowing mini-slot transmissions to proceed when the channel is clear, thus resolving the contradiction between transmission flexibility and communication reliability
2Measurement precision
If UEs continuously monitor for slot-based transmissions, then interference detection accuracy is improved, but processing complexity and time consumption increase
Solution Approach 1:
The UE monitors for SCI in specific search spaces and measures RSRP only for detected slot-based transmissions that are relevant to the current transmission opportunity. This targeted monitoring approach focuses computational resources on the most critical detection tasks rather than continuously analyzing all possible signals, thereby maintaining high detection accuracy while reducing overall processing complexity
Data Source
AI summary
Methods, systems, and devices for wireless communication are described. Some wireless communications systems may support a slot transmission detection procedure for sidelink communications. A sidelink user equipment may monitor, during a slot and within one or more subbands, for signaling associated with a first sidelink transmission that corresponds to resources that span a duration of the slot. The signaling may include sidelink control information, a demodulation reference signal, or other sidelink signaling associated with the first sidelink transmission. The user equipment may determine a signal strength or one or more other parameters associated with the signaling. The user equipment may determine whether to transmit a second sidelink transmission having a duration that is less than a first duration of the first sidelink transmission based on the signal strength, the one or more parameters, or both associated with the signaling.