Wireless Communication Device Resource Conflict Detection
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Solution Overview
Problem
In wireless communication systems, especially in NR-V2X mode 2, conflicts in reserved resources can occur due to simultaneous resource selection by terminal devices, leading to inefficient communication efficiency, particularly in congested environments where frequent resource reselections may not adequately prevent re-conflicts.
Innovation Solution
A wireless communication device and method that includes a processor to determine conflicts in reserved resources and transmit information indicating these conflicts, using a coordinative terminal to calculate the error risk of data transmission and request resource reselection when the risk exceeds a threshold, thereby avoiding unnecessary reselections and reducing re-conflicts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If terminal devices autonomously select resources for data transmission in NR-V2X mode 2, then resource allocation flexibility is improved, but resource conflicts occur leading to reduced communication reliability
Solution Approach 1:
The patent implements a feedback mechanism where terminal devices transmit control information (SCI) containing reserved resource notifications to neighboring terminals. This feedback loop allows terminals to be aware of resources already allocated by others, enabling them to adjust their resource selection accordingly and avoid conflicts, thus maintaining both flexibility and reliability.
Solution Approach 2:
The patent applies preliminary action by having terminals transmit control information before actual data transmission occurs. This advance notification of reserved resources allows other terminals to pre-adjust their resource selection, preventing conflicts before they arise and ensuring reliable communication while maintaining autonomous resource allocation flexibility.
2Reliability
If frequent resource reselections are performed to avoid conflicts, then communication reliability is improved, but system overhead increases and productivity decreases
Solution Approach 1:
By implementing feedback through control information transmission, the system reduces unnecessary resource reselections. Terminals only need to reselect resources when actual conflicts are detected through feedback from neighboring terminals, rather than performing frequent reselections proactively, thus maintaining reliability while improving productivity.
Solution Approach 2:
The patent applies partial action by having terminals perform resource reselection only when necessary (when conflicts are detected through feedback), rather than performing excessive reselections continuously. This selective approach maintains communication reliability while minimizing system overhead and preserving productivity.
3Reliability
If control information is transmitted to notify reserved resources, then resource conflict detection is improved, but transmission time increases
Solution Approach 1:
The patent segments the control information into compact structures (SCI) that contain only the essential reserved resource notification data. This segmentation allows for efficient transmission with minimal overhead, achieving accurate conflict detection while minimizing the time required for control information exchange between terminals.
Data Source
AI summary
A wireless communication device includes a wireless communicator configured to perform wireless communication with a plurality of transmission terminals, and processor circuitry is further configured to determine whether a conflict occurs in wireless resources reserved by the transmission terminals to be used for data transmission, and determine, when it is determined that a conflict of the wireless resources occurs, for transmitting information that indicates the conflict of the wireless resources.