Sidelink Resource Selection Using Receiver Transmission Feedback
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Solution Overview
Problem
In vehicle-to-everything (V2X) communications, the selection of sidelink resources by a sender terminal can result in conflicts with the receiver terminal's transmission, leading to poor data reception quality due to mismatched signal strengths and interference considerations.
Innovation Solution
A first terminal determines sidelink resources for a second terminal by obtaining its transmission status, avoiding resources that conflict with the second terminal's transmission, thereby ensuring the selected resources are valid for the receiver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the receiver terminal recommends sidelink resources based on its own transmission needs, then the resource selection considers receiver requirements, but the recommended resources may conflict with the sender terminal's transmission
Solution Approach 1:
The sender terminal obtains transmission information from the receiver terminal and uses this feedback to determine valid sidelink resources. The sender queries the receiver about its transmission status and uses this feedback information to select resources that do not conflict with the receiver's transmission, ensuring both reception quality and resource validity.
Solution Approach 2:
The sender terminal performs preliminary determination of valid sidelink resources by querying the receiver terminal's transmission status before actually selecting and using the resources. This preliminary action prevents resource conflicts by advance identification of valid resources based on receiver transmission information.
2Ease of operation
If the sender terminal selects sidelink resources independently without considering receiver transmission status, then the selection process is simple, but resource conflicts occur leading to poor reception quality
Solution Approach 1:
The system introduces feedback mechanism where the sender terminal queries the receiver terminal for transmission status information. This feedback loop enables the sender to adjust its resource selection based on receiver needs, improving reception quality while maintaining operational simplicity through automated resource determination.
Solution Approach 2:
The receiver terminal acts as an intermediary that provides transmission status information to the sender terminal. This intermediary mechanism enables coordinated resource selection without requiring complex direct negotiation between sender and receiver, maintaining simplicity while improving reliability.
3Extent of automation
If the sender terminal uses sensing mechanism to select resources, then the process is autonomous, but the selected resources may have weak or no signal for the sender while being strong for the receiver
Solution Approach 1:
The sender terminal uses feedback from the receiver terminal's transmission status to adjust its autonomous resource selection. The sender queries the receiver about its transmission needs and uses this information to select resources that provide appropriate signal strength for both terminals, maintaining autonomy while improving signal match.
Solution Approach 2:
The resource selection process incorporates changes in selection criteria based on receiver transmission status. Instead of solely relying on signal strength sensing, the system adjusts resource parameters by considering receiver transmission information, enabling better signal strength matching while preserving terminal autonomy.
Data Source
AI summary
A resource determining method includes that a first terminal obtains transmission information from a second terminal, wherein the transmission information is used to indicate a first sidelink resource. The first terminal determines a second sidelink resource according to the transmission information, wherein a time range of the second sidelink resource does not overlap that of the first sidelink resource. The first terminal sends a first data to the second terminal on a sidelink resource of the second sidelink resource, wherein the first sidelink resource includes a sidelink resource on which a second data is received by the second terminal.