Sidelink CSI-RS Scheduling Across Multiple Reserved Slots
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Solution Overview
Problem
In existing communication systems, a terminal device can transmit only one channel state information reference signal (CSI-RS) per slot, limiting the transmission efficiency of CSI-RSs when multiple are needed, which affects the performance of sidelink communication.
Innovation Solution
The method and terminal device enable the determination of a CSI-RS resource within a first time unit that can include multiple consecutive slots or a reserved slot for transmitting CSI-RS, allowing for enhanced transmission efficiency by optimizing the allocation of CSI-RS resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If one slot contains only one CSI-RS resource, then the system maintains simple resource allocation, but the transmission efficiency of CSI-RS is low when multiple CSI-RSs are needed
Solution Approach 1:
The patent segments the time unit into multiple slots, with each slot capable of containing one CSI-RS resource. This allows multiple CSI-RS resources to be transmitted within a single time unit by distributing them across different slots, thereby improving transmission efficiency while maintaining simple resource allocation rules at the slot level
Solution Approach 2:
The patent introduces a multi-slot dimension for CSI-RS transmission. Instead of limiting CSI-RS to a single slot, the solution extends the transmission across multiple slots within a time unit, utilizing the time dimension to increase the number of CSI-RS resources that can be transmitted without complicating the slot-level resource allocation structure
Data Source
AI summary
A sidelink communication method includes: determining, by a first terminal device, a first channel state information reference signal (CSI-RS) resource in a first time unit, where the first time unit satisfies one of: the first time unit including a plurality of consecutive slots; and the first time unit including one slot, the first CSI-RS resource being a transmission resource reserved by a terminal device for transmitting CSI-RS.