Sidelink HARQ-ACK Transmission Using Panel-Specific Zone Identifiers
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Solution Overview
Problem
In multi-TRP scenarios of NR V2X communication, determining sidelink HARQ-ACK transmission based on positional information is redesigned, existing schemes fail to effectively address the beam-specific needs of the technical problem of determining whether to transmit sidelink HARQ-ACK transmissions, leading to effectively address the intra-beam interferences and the preciseness of determining whether to transmit sidelink HARQ-ACKs is compromised.
Innovation Solution
A method for wireless communications involving a first node that receives a signaling indicating a zone identifier, determining whether to transmit a signal based on this identifier, and using different zone identifiers and beamforming vectors for panels to ensure accurate and efficient HARQ-ACK transmission, while avoiding intra-beam interferences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single zone identifier is used for determining sidelink HARQ-ACK transmission, then the determination process is simple, but the precision is compromised in multi-TRP scenarios with multiple panels
Solution Approach 1:
The patent divides the single zone identifier into multiple zone identifiers (first zone identifier and second zone identifier), each corresponding to different panels or TRPs. This segmentation allows each panel to have its own zone identifier for independent HARQ-ACK transmission determination, thereby improving precision in multi-TRP scenarios while managing complexity through structured assignment rules.
Solution Approach 2:
The patent assigns different zone identifiers to different panels based on their specific characteristics and positions. Each panel uses its own zone identifier (e.g., first zone identifier for first panel, second zone identifier for second panel) to determine HARQ-ACK transmission locally, ensuring that the determination is optimized for each specific panel's conditions rather than using a generic single identifier.
2Reliability
If positional information is used to determine HARQ-ACK transmission, then the transmission accuracy is improved, but intra-beam interferences occur in multi-TRP scenarios
Solution Approach 1:
The patent segments the HARQ-ACK transmission determination into separate processes for each panel using different zone identifiers. By assigning distinct zone identifiers to different panels (first zone identifier for first panel, second zone identifier for second panel), the patent enables independent determination of HARQ-ACK transmission for each beam, thereby improving reliability while avoiding intra-beam interferences through spatial separation.
Solution Approach 2:
The patent introduces zone identifiers as intermediary parameters that mediate between positional information and HARQ-ACK transmission decisions. These zone identifiers serve as intermediaries that encode spatial relationship information, allowing the system to determine transmission accuracy based on positional data while the intermediary structure prevents direct conflicts and interferences between multiple beams.
Data Source
AI summary
A method and device in nodes for wireless communication. A first node firstly receives a first signaling, the first signaling being used to indicate a first zone identifier; and then determines whether a first signal is transmitted according to the first zone identifier and a target zone identifier; when the determination result is yes, the first signal is transmitted in a first radio resource set; when the determination result is no, the first signal transmission is cancelled in the first radio resource set; when the first signal is associated with a first reference signal. The present disclosure optimizes determination upon sidelink feedback information transmission by respectively associating the first reference signal and the second reference signal with the second zone identifier and the third zone identifier, thus the spectrum efficiency of sidelink transmission can be improved.