Sidelink Beam Training Resource Allocation to Avoid S-SSB Conflicts
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Solution Overview
Problem
In sidelink communication systems, simultaneous transmission of synchronization signal blocks (S-SSBs) by multiple terminals on the same time-frequency resource leads to conflicts, impairing beam training effectiveness due to differing contents being transmitted.
Innovation Solution
The method involves sending N S-SSBs on N first time-frequency resources within a resource pool and receiving feedback information on N second time-frequency resources, ensuring each S-SSB is transmitted and measured without conflicts by determining resource usage through contention, allowing for beam training.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple terminals transmit S-SSBs simultaneously on the same time-frequency resource, then resource utilization is improved, but transmission conflicts occur and beam training effectiveness deteriorates
Solution Approach 1:
The patent segments the transmission resources by dividing them into announcement resources and feedback resources. Terminals transmit S-SSBs on announcement resources and receive feedback on separate feedback resources. This segmentation prevents transmission conflicts while maintaining resource utilization, as terminals do not simultaneously transmit and receive on the same resource.
Solution Approach 2:
The patent introduces a new dimension to the resource structure by creating a two-resource framework (announcement resource + feedback resource) instead of using a single time-frequency resource. This dimensional expansion allows terminals to transmit S-SSBs without conflict while still achieving high resource utilization through the separation of transmission and feedback functions.
2Reliability
If S-SSBs are transmitted on resources within the resource pool through contention, then sending conflicts are avoided, but resource acquisition time increases
Solution Approach 1:
The patent applies preliminary action by having terminals perform contention-based resource selection in advance before actual S-SSB transmission. Terminals contend for and secure their announcement and feedback resources beforehand, which eliminates transmission conflicts during the actual beam training process while the preliminary contention phase absorbs the time cost.
Data Source
AI summary
This application provides a communication method and a related apparatus, to avoid a sending conflict between a plurality of terminals and implement beam training. The method includes: A first terminal sends N sidelink synchronization signal blocks S-SSBs to a second terminal on N first time-frequency resources, where the N first time-frequency resources are located within a resource pool, and N is an integer greater than 1. The second terminal sends feedback information from the second terminal to the first terminal on one or more of M second time-frequency resources, where the feedback information indicates measurement results of one or more S-SSBs in the N S-SSBs, the N second time-frequency resources are located in the resource pool, M is an integer greater than 1, and M is less than or equal to N.