Sidelink Resource Conflict Resolution via Third Channel Indication
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Solution Overview
Problem
In sidelink communication for Vehicle to Everything (V2X) in New Radio (NR), the receiver cannot accurately determine whether feedback information exists in a received physical sidelink shared channel (PSSCH) or know the resources occupied by control information multiplexed with data, due to unclear resource allocation and modulation schemes.
Innovation Solution
A method where a transmitter determines resource conflicts between data and feedback channels and transmits target information through a third sidelink channel, including data or feedback information, and optionally uses indication signals to inform the receiver about the presence and modulation efficiency of the data and feedback information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the transmitter multiplexes data and feedback information in the same sidelink channel to resolve resource conflicts, then resource utilization improves, but the receiver cannot accurately determine whether feedback information exists or know the resources occupied by control information
Solution Approach 1:
The patent introduces a third sidelink channel as an intermediary to transmit indication information about the multiplexed data and feedback information. This intermediary channel enables the receiver to detect the presence of feedback information and determine resource occupation without requiring separate dedicated channels for data and feedback, thus resolving the contradiction between resource utilization and information detection accuracy
Solution Approach 2:
The patent implements a feedback mechanism where the transmitter sends indication information through the third sidelink channel to inform the receiver about the multiplexed feedback information. This feedback loop allows the receiver to accurately detect and process the multiplexed information, enabling reliable communication while improving resource utilization through multiplexing
2Measurement precision
If separate channels are used for data and feedback information transmission, then receiver detection accuracy is maintained, but resource conflicts occur when time resources overlap
Solution Approach 1:
The patent merges data and feedback information transmission into a single multiplexed sidelink channel to eliminate resource conflicts. By combining these transmissions and using a third channel for indication information, the system achieves efficient resource utilization while maintaining receiver detection accuracy through the accompanying indication signals
Data Source
AI summary
The present disclosure provides sidelink-based transmission methods and apparatuses. A method includes: determining whether one or more resources occupied by a first sidelink channel and one or more resources occupied by a second sidelink channel conflict in a time domain, where the first sidelink channel is configured to transmit data for the sidelink and the second sidelink channel is configured to transmit feedback information for the sidelink; and transmitting target information to a receiver through a third sidelink channel in response to determining that the one or more resources occupied by the first sidelink channel and the one or more resources occupied by the second sidelink channel conflict in the time domain, where the target information includes at least one of the data or the feedback information.