Sidelink Configured Grant Prioritization for Autonomous V2X Transmission
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Solution Overview
Problem
The increasing demand for mobile broadband communication and V2X services in wireless communication systems necessitates efficient management of sidelink data transmission to address reliability and latency concerns, particularly in scenarios where base station overhead is high.
Innovation Solution
A method and device for performing wireless communication that involves obtaining information related to sidelink configured grants, configuring autonomous transmission for a logical channel, and deprioritizing certain sidelink transmissions to optimize data exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If autonomous transmission is configured for sidelink data, then transmission reliability is improved, but transmission latency increases due to deprioritization in certain periods
Solution Approach 1:
The patent implements dynamic priority adjustment for sidelink configured grants based on buffer status and channel conditions. The network can dynamically reconfigure the priority level of SL CGs, allowing the system to adapt between reliable but delayed transmission (when deprioritization is applied) and timely transmission (when priority is restored), thus resolving the contradiction between reliability and latency
Solution Approach 2:
The patent changes the priority parameter of sidelink configured grants dynamically. By adjusting the priority value based on traffic conditions, buffer status, and channel quality, the system can switch between deprioritized mode (improving reliability through retransmission opportunities) and normal priority mode (reducing latency), thereby resolving the contradiction
2Productivity
If deprioritization is applied to sidelink configured grants, then system efficiency is improved through better resource management, but transmission speed decreases
Solution Approach 1:
The patent applies periodic deprioritization to sidelink configured grants, where certain SL CG periods are deprioritized while others maintain normal priority. This periodic pattern allows the system to achieve better resource management and efficiency over time while ensuring that critical transmissions can still occur at normal speed during non-deprioritized periods
Solution Approach 2:
The system dynamically adjusts the deprioritization strategy based on real-time conditions. When channel conditions are good or traffic is non-critical, deprioritization is applied to improve overall system efficiency. When urgency is detected, the priority is restored to maintain transmission speed, thus resolving the contradiction between efficiency and speed
Data Source
AI summary
A method of performing wireless communication by a first device and a device supporting same are provided. The method may comprise the steps of: obtaining information related to multiple sidelink (SL) configured grants (CGs); configuring autonomous transmission for a logical channel related to a first SL CG included in the multiple SL CGs; and de-prioritizing the first SL CG for first SL transmission related to the logical channel during a first SL period of the first SL CG. For example, the first device may be allowed to perform the first SL transmission during a second SL period of the de-prioritized first SL CG.