NR V2X Sidelink Configuration Selection for Power Saving
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Solution Overview
Problem
Existing NR vehicular communication systems face challenges in optimizing resource usage and power consumption for unicast and groupcast communications, leading to inefficient energy management and potential battery drain in wireless devices.
Innovation Solution
A wireless transmit/receive unit (WTRU) selects a configuration group based on suitability selection parameters, including resource thresholds and priority values, to manage resource usage and power consumption effectively, ensuring compliance with specified thresholds and maximizing resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a WTRU continuously monitors and transmits in NR V2X sidelink communications, then communication reliability and responsiveness are improved, but power consumption increases and battery life decreases
Solution Approach 1:
The patent implements periodic monitoring and transmission cycles where the WTRU alternates between active communication phases and sleep phases. Configuration groups define specific time-frequency resources for monitoring, allowing the WTRU to periodically wake up to check for communications and then return to sleep mode, thereby reducing overall power consumption while maintaining communication reliability through structured periodic checks.
Solution Approach 2:
The system dynamically adjusts the WTRU's monitoring and transmission behavior based on communication conditions and priority levels. By selecting different configuration groups with varying resource allocations and monitoring requirements, the WTRU can adapt its activity level to match actual communication needs, optimizing the balance between reliability and power consumption in real-time.
2Productivity
If a WTRU uses more resources for monitoring and transmission, then communication quality and data rate are improved, but resource usage exceeds thresholds and power efficiency decreases
Solution Approach 1:
The patent changes key parameters such as monitoring frequency, transmission power, and resource allocation based on communication conditions. Configuration groups contain different parameter sets that can be selected to optimize performance for specific scenarios, allowing the WTRU to adjust its resource usage and power consumption characteristics to match actual communication requirements while staying within system thresholds.
Solution Approach 2:
The system applies partial monitoring and transmission actions based on communication priority and conditions. Instead of continuously monitoring all resources, the WTRU selectively monitors only necessary configuration groups and resources, performing partial actions that are sufficient for maintaining communication quality while avoiding excessive resource usage and power consumption.
3Reliability
If multiple configuration groups are monitored simultaneously, then communication coverage and reliability are improved, but device complexity and processing requirements increase
Solution Approach 1:
The patent segments the monitoring task by dividing configuration groups into different priority levels and categories. Instead of monitoring all configuration groups simultaneously with equal intensity, the WTRU segments monitoring into essential groups that must be continuously watched and optional groups that can be monitored periodically or conditionally, reducing overall processing requirements while maintaining communication coverage.
Solution Approach 2:
The system uses feedback mechanisms to dynamically adjust which configuration groups require monitoring based on actual communication conditions. By monitoring feedback indicators such as received signal quality, transmission success rates, and channel conditions, the WTRU can intelligently determine which configuration groups need attention, reducing unnecessary processing while maintaining reliable communication coverage.
Data Source
AI summary
Systems, methods, and instrumentalities are described herein that may be associated with new radio (NR) vehicular communication (V2X) sidelink power saving for unicast and groupcast. A first wireless transmit/receive unit (WTRU) may receive a message. The message may indicate a set of configuration groups and/or one or more suitability selection parameters. The WTRU may receive, from a second WTRU, a first indication. The first indication may indicate that the second WTRU is associated with a first configuration group and a first priority group. The first WTRU may receive, from a third WTRU, a second indication. The second indication may indicate that the third WTRU is associated with a second configuration group and a second priority value. The first WTRU may select a configuration group from the set of configuration groups based on the first indication and the second indication.