Sidelink Resource Selection Sub-Window Segmentation for V2X Reliability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems, particularly in next-generation sidelink communication, face challenges in meeting higher latency and reliability requirements due to the lack of an effective method for selecting transmission resources for sidelink messages, especially in scenarios involving Vehicle-to-Everything (V2X) communication.
Innovation Solution
A resource selecting method for sidelink terminals in wireless communication systems, which determines resource selection sub-windows based on the number of initial and retransmissions for sidelink messages, considering the capabilities of both the transmitting and receiving terminals, and adjusts the size of these sub-windows to meet latency and reliability requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If resource selection is performed without considering repeated transmission number, then resource selection process is simple, but latency and reliability requirements cannot be satisfied
Solution Approach 1:
The resource selection window is divided into multiple resource selection sub-windows based on the repeated transmission number. Each sub-window corresponds to a specific transmission instance (initial transmission or retransmission), allowing the terminal to select resources for each transmission separately. This segmentation enables the system to meet reliability requirements by ensuring adequate resources are allocated across multiple transmission attempts without overly complicating the overall resource selection process.
Solution Approach 2:
The terminal determines the repeated transmission number in advance before performing resource selection. This preliminary determination of transmission requirements allows the resource selection window to be properly segmented into sub-windows, ensuring that sufficient resources are reserved for potential retransmissions. By planning ahead, the system can satisfy reliability and latency requirements without adding complex real-time decision-making processes.
2Quantity of substance
If resource selection window size is large, then more resources are available for selection, but latency requirement becomes harder to meet
Solution Approach 1:
The resource selection window is segmented into multiple sub-windows based on the repeated transmission number. This segmentation allows the system to distribute available resources across multiple time intervals, ensuring that resources are allocated efficiently for both initial transmission and potential retransmissions. By dividing the window, the system maintains adequate resource availability while reducing the time delay associated with searching through a large, undivided window.
Solution Approach 2:
The resource selection process becomes dynamic by adapting the sub-window selection based on the repeated transmission number. The terminal can adjust which sub-windows to use for resource selection depending on the required number of transmissions, allowing flexible optimization between resource availability and latency requirements. This dynamic approach enables the system to respond to different service requirements without being constrained by a fixed resource selection strategy.
3Reliability
If repeated transmission number is increased, then reliability is improved, but resource consumption increases
Solution Approach 1:
The terminal determines the repeated transmission number in advance based on service requirements and terminal capabilities. This preliminary determination allows the system to allocate resources efficiently by knowing exactly how many transmission attempts are needed. Resources are reserved for the specific number of transmissions required, avoiding unnecessary resource consumption from excessive retransmissions while ensuring adequate resources are available to meet reliability targets.
Solution Approach 2:
The system optimizes resource consumption by adjusting the repeated transmission number parameter based on service requirements and terminal capabilities. By dynamically setting this parameter, the system can balance reliability improvements against resource consumption. The resource selection window is then segmented according to this optimized parameter, ensuring that resources are allocated efficiently for the exact number of transmissions needed to achieve the desired reliability level.
Data Source
AI summary
A resource selection method of a sidelink terminal in a wireless communication system is presented. The method determines resource selection sub windows in a resource selection window on the basis of a repetitive transmission frequency for a sidelink message, and selects a resource for the transmission of the sidelink message in each of the resource selection sub windows, wherein the repetitive transmission frequency includes initial transmission and retransmission frequency for the sidelink message.