Frequency Floating Sidelink Control Information
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless communication systems face challenges in efficiently communicating sidelink control information due to interference, leading to reduced reliability and increased latency in Next Generation Radio (NR) networks.
Innovation Solution
The system employs frequency selection based on interference levels, where user equipment (UE) and base stations (BS) sense interference levels and choose frequencies with lower interference for sidelink control information communication, optimizing resource use and reducing retransmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sidelink control information is communicated on fixed or pre-configured frequencies, then device complexity is reduced and ease of operation is improved, but interference levels increase and reliability deteriorates
Solution Approach 1:
The system performs preliminary sensing of interference levels on available frequencies before selecting the frequency for SCI communication. This advance measurement and selection process ensures that the chosen frequency has acceptable interference characteristics, thereby improving reliability without requiring complex real-time adjustments during communication.
Solution Approach 2:
User equipment autonomously performs interference level sensing and frequency selection for SCI communication without requiring complex network coordination. The UE independently evaluates available frequencies based on measured interference levels and selects the most suitable frequency, reducing device complexity while maintaining reliability through self-optimized frequency choice.
2Productivity
If frequency selection based on interference sensing is implemented, then reliability and efficiency are improved, but device complexity and measurement requirements increase
Solution Approach 1:
The system extracts only the necessary interference level information from the radio environment to make frequency selection decisions. Rather than performing comprehensive channel characterization, the UE measures and uses only the interference level metric on candidate frequencies, simplifying the measurement process while maintaining communication efficiency through informed frequency selection.
3Loss of time
If interference-based frequency selection is used, then loss of time due to retransmissions is reduced, but the complexity of the communication protocol increases
Solution Approach 1:
The system performs frequency selection based on interference sensing before initiating SCI communication. This preliminary frequency optimization prevents transmission failures caused by interference, thereby reducing retransmissions and time loss. The protocol complexity is managed by integrating the frequency selection process into the existing random access procedure, leveraging existing protocol structures rather than adding entirely new complex mechanisms.
Data Source
AI summary
Wireless communications systems and methods related to communicating control information are provided. A method of wireless communication performed by a user equipment (UE) may include sensing an interference level of at least one frequency, selecting, based on the interference level, a frequency, and communicating sidelink control information (SCI) in the selected frequency.