Sidelink Initial Beam Pairing Resource Configuration
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently configuring resources for initial beam pairing in sidelink operations, which is crucial for determining optimal transmit and receive beams for sidelink transmissions.
Innovation Solution
The proposed solution involves configuring an Initial Beam Pairing (IBP) resource that includes multiple IBP reference signal bursts and corresponding response occasions, allowing UEs to measure reference signals and transmit response messages to indicate selected beams for sidelink communications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple reference signal bursts are transmitted during IBP resource for beam pairing, then beam selection accuracy is improved, but resource configuration complexity increases
Solution Approach 1:
The IBP resource is segmented into multiple distinct time occasions, with each occasion dedicated to transmitting a specific reference signal burst. This segmentation allows the receiving UE to measure each burst independently and identify the best beam, thereby improving beam selection accuracy while maintaining organized resource management
Solution Approach 2:
The resource configuration for IBP is established in advance, with pre-defined time occasions for reference signal transmission and corresponding response occasions. This preliminary configuration simplifies the actual beam pairing process by providing a structured framework that both transmitting and receiving UEs can follow without real-time negotiation
2Reliability
If gap period is added to IBP resource for switching between receiving and transmitting operations, then operational reliability is improved, but time resource consumption increases
Solution Approach 1:
The IBP resource structure incorporates periodic alternation between receiving operations (during reference signal bursts) and transmitting operations (during response occasions), with gap periods strategically placed to enable reliable switching. This periodic pattern ensures that UEs have dedicated time for each operation type, improving reliability while minimizing total time through efficient scheduling
Data Source
AI summary
Methods, systems, and devices for wireless communication are described. A first user equipment (UE) may transmit reference signals bursts during an initial beam pairing (IBP) resource. In some examples, each reference signal burst may include an occasion for transmitting a reference signal of a set of reference signals. A second UE may measure the reference signals during the IBP resource and may determine a beam for sidelink communications with the first UE based on measuring the set of reference signals. The second UE may transmit a response message during a response occasion of the IBP resource, where each response occasion within the IBP resource corresponds to a respective reference signal of the set of reference signals. As such, the second UE may transmit a response message during a response occasion that corresponds to the reference signal associated with the selected beam, thereby indicating the selected beam to the first UE.