Sidelink Beam Resource Coordination for Interference-Resilient Reception
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Solution Overview
Problem
Current communication technologies face challenges in optimizing the utilization of space domain resources and improving communication quality between terminal devices, particularly in vehicle-to-everything (V2X) and device-to-device (D2D) applications.
Innovation Solution
A communication method involving a terminal device determining candidate resource sets for multiple receive beams, identifying an intersection set, and sending configuration information to another terminal device to enhance beam utilization and reduce interference, thereby improving communication quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single receive beam is used for communication, then the device complexity is reduced, but the communication quality deteriorates due to interference from single beam direction
Solution Approach 1:
The patent combines multiple receive beams into a unified beam set that shares common candidate resources. By merging the resource pools of multiple beams and identifying an intersection set, the system achieves diversity gain while maintaining manageable complexity through centralized resource coordination.
Solution Approach 2:
The patent introduces a new dimension of resource allocation by creating an intersection set of candidate resources that is independent of any single beam's resource pool. This dimensional transformation allows the system to select resources that are valid across multiple beams, adding a layer of redundancy without proportionally increasing complexity.
2Adaptability or versatility
If multiple candidate resource sets are maintained for different receive beams, then the adaptability is improved, but the loss of time increases due to resource selection overhead
Solution Approach 1:
The patent performs preliminary action by pre-identifying the intersection set of candidate resources that are valid for multiple receive beams. This advance preparation eliminates the need for time-consuming resource selection during actual communication, as the valid resource pool is predetermined and can be quickly accessed when beam switching is needed.
Solution Approach 2:
The intersection set of candidate resources serves multiple functions simultaneously: it is valid for all receive beams in the set, can be used for resource selection without beam switching, and provides a fallback option when beam interference occurs. This multi-functionality reduces the overall resource selection time across different scenarios.
3Loss of substance
If the intersection set of candidate resources is used for multiple receive beams, then the loss of substance is reduced by optimizing resource utilization, but the device complexity increases due to intersection calculation
Solution Approach 1:
The system performs self-service by autonomously calculating and maintaining the intersection set of candidate resources based on the resource pools of its receive beams. The terminal device independently manages its own resource optimization without requiring external coordination, making the complexity management scalable and efficient.
Data Source
AI summary
This application provides a communication method, a communication apparatus, and a communication system. In the method, a receive-end terminal device (namely, a first terminal device) determines a plurality of receive beams, obtains an intersection set between candidate resource sets of the plurality of receive beams, and then indicates the intersection set to a transmit-end terminal device (namely, a second terminal device) by using configuration information. When the transmit-end terminal device sends sidelink information to the receive-end terminal device by using a time-frequency resource in the intersection set, the receive-end terminal device may select one of the plurality of receive beams for reception. When the receive beam is subject to interference, the receive-end terminal device may reselect one of the plurality of receive beams for reception.