Wireless Communication Node Gap Configuration for V2X Resource Utilization
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Solution Overview
Problem
In 5G NR V2X systems, the configuration of gaps for multiple numerologies leads to inefficiencies in resource utilization due to timing inconsistencies and header overhead, particularly in sidelink transmissions where Tx/Rx switching times vary with numerology changes.
Innovation Solution
A method that transmits first information indicating a target time length from a candidate set to determine optimal gap lengths, using subcarrier spacing and frequency domain resource positions to ensure gap lengths do not impact multicarrier symbol usage, thereby improving resource utilization and reducing header overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple numerologies are supported with flexible frame structures, then adaptability to diverse service requirements is improved, but resource utilization efficiency deteriorates due to gap configuration overhead
Solution Approach 1:
The patent implements dynamic gap configuration where the gap length is not fixed but adapted based on the specific numerology and service requirements. The system dynamically selects from multiple candidate gap lengths (e.g., 0.5ms, 1ms, 2ms) depending on the subcarrier spacing and service type, allowing the gap structure to flexibly adjust to different numerologies while maintaining optimal resource utilization
Solution Approach 2:
The patent changes the parameter of gap length from a fixed value to a selectable set of discrete values (0.5ms, 1ms, 2ms, etc.). By providing multiple candidate gap lengths and selecting the appropriate one based on numerology and service requirements, the system optimizes resource utilization while supporting diverse services with different timing characteristics
2Reliability
If gap time length is increased to avoid collision and accommodate Tx/Rx switching, then reliability of transmission is improved, but header overhead increases reducing effective transmission time
Solution Approach 1:
The patent provides multiple candidate gap lengths (0.5ms, 1ms, 2ms, etc.) and selects the minimum sufficient gap length based on the specific service requirements and numerology. This prevents unnecessary extension of gap time beyond what is needed for reliable transmission, thereby minimizing header overhead while maintaining transmission reliability
Solution Approach 2:
Instead of using a uniformly large gap length for all cases, the patent applies the minimum necessary gap length for each specific scenario. By matching the gap length to the actual requirements of different services and numerologies, the system avoids excessive gap time that would increase header overhead without providing additional reliability benefits
Data Source
AI summary
The disclosure provides a method and a device used in node for wireless communication. The communication node first transmits first information, and then transmits a first radio signal; the first radio signal occupies a first time interval in time domain; the first information is used for indicating a target time length, the target time length is one candidate time length in a target candidate time length set; the first time interval belongs to a first time window, time domain resources in the first time window other than the first time interval are reserved as a gap by a transmitter of the first radio signal, and the target time length is equal to a difference value between the time length of the first time window and the time length of the first time interval. The disclosure improves resource utilization.