Sidelink Resource Feedback for Receiver-Side Interference Avoidance
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Solution Overview
Problem
In V2X communication, especially in NR V2X mode 2, terminal equipment may select resources to avoid interference, but due to geographical differences between transmitting and receiving devices, the receiving device may still be subject to interference that the transmitting device cannot sense.
Innovation Solution
The method involves transmitting triggering information via sidelink control channels to prompt the receiving device to report sidelink resource information, which more accurately reflects the interference environment experienced by the receiving device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the transmitting device autonomously selects resources based on its own sensing results, then the resource selection process is simple and fast, but the receiving device may still be subject to interference that the transmitting device cannot sense due to geographical differences
Solution Approach 1:
The receiving device feeds back sidelink resource information to the transmitting device, creating a feedback loop that enables the transmitter to adjust its resource selection based on actual interference conditions at the receiver location, thereby resolving the contradiction between simple autonomous selection and reliable interference avoidance
Solution Approach 2:
The receiving device acts as an intermediary that provides information about the actual interference environment, bridging the gap between the transmitting device's sensing capabilities and the actual reception conditions, enabling more accurate resource selection
2Reliability
If the transmitting device selects resources to avoid interference, then the reliability of transmission is improved, but the receiving device may still experience interference due to different geographical locations and sensing limitations
Solution Approach 1:
The receiving device provides feedback about its sensed interference environment, compensating for the information loss that occurs when the transmitting device relies solely on its own sensing, thereby enabling more accurate resource selection that accounts for local interference conditions
Data Source
AI summary
A sidelink transmission and reception methods and apparatuses. The sidelink transmission method includes transmitting first sidelink control information via a physical sidelink control channel; and transmitting second sidelink control information and a first transport block via a physical sidelink shared channel, wherein the first sidelink control information or the second sidelink control information or a media access control protocol data unit of the first transport block indicates or carries triggering information used for triggering a second terminal equipment to report sidelink resource information.