Sidelink RLF Reporting for Idle-State V2X Resource Optimization
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Solution Overview
Problem
In wireless communication systems, vehicle-to-everything (V2X) services experience radio link failure (RLF) issues due to improper resource configuration, leading to disrupted sidelink (SL) communication between terminal devices.
Innovation Solution
A method for processing SL RLF information is provided, where terminal devices report RLF information to network devices during idle or inactive states, enabling the network to optimize SL resource configuration and improve communication success rates by completing radio link management (RLM) functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terminal devices do not report RLF information during idle or inactive states, then the network device cannot obtain comprehensive RLF information to locate problems, but requiring reporting increases system complexity and resource usage
Solution Approach 1:
The terminal device performs preliminary action by storing RLF information locally during idle or inactive states before reconnecting to the network. This allows the information to be ready for reporting without requiring continuous network connection or real-time monitoring infrastructure, thus improving reliability while avoiding excessive system complexity
Solution Approach 2:
The patent introduces an intermediary mechanism where the terminal device acts as a temporary storage node for RLF information. The information is stored in the terminal during idle/inactive states and later transferred to the network device when connection is established, serving as an intermediary solution between continuous monitoring requirements and device power/state constraints
2Reliability
If the network device optimizes SL resource configuration based on comprehensive RLF information, then RLF occurrences are reduced and communication success rate improves, but obtaining and processing this information increases network device workload
Solution Approach 1:
The patent extracts only the essential RLF information elements that are most useful for resource optimization from the complete failure data. By selecting and reporting only critical parameters rather than all possible failure details, the terminal reduces the amount of data the network device must process, while still providing sufficient information to improve communication success rate
Solution Approach 2:
The network device performs partial optimization by focusing on the most impactful resource configuration parameters based on the received RLF information. Rather than comprehensively reconfiguring all SL resources, the network device applies targeted adjustments to the most critical parameters, achieving improved communication success rate with reduced processing power consumption
Data Source
AI summary
A method for processing radio link failure (RLF) information includes obtaining sidelink (SL) RLF information of an SL on which an RLF occurs and a terminal device is in an idle state or an inactive state. The further includes determining that the terminal device is in a connected state, and sending the SL RLF information to a network device.