Sidelink CSI-RS Resource Allocation Across Multiple Slots
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In known communication systems, a terminal device can transmit only one channel state information reference signal (CSI-RS) resource per slot, limiting the transmission efficiency of CSI-RSs when multiple CSI-RSs are needed.
Innovation Solution
The method and terminal device allow for determining a CSI-RS resource within a first time unit that includes multiple consecutive slots or a single slot with reserved transmission resources, increasing the number of available resources for CSI-RS transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a terminal device transmits only one CSI-RS resource per slot, then the system maintains simple resource allocation, but the transmission efficiency of CSI-RSs decreases when multiple CSI-RSs are needed
Solution Approach 1:
The patent extends the time domain resource allocation from single-slot level to multi-slot level by introducing a first time unit comprising multiple consecutive slots. This dimensional change allows multiple CSI-RS resources to be allocated across the extended time period, thereby improving transmission efficiency without overwhelming the resource allocation complexity within a single slot.
Solution Approach 2:
The patent segments the time domain into multiple consecutive slots forming a first time unit, where each slot can contain CSI-RS resources. This segmentation allows the system to distribute multiple CSI-RS transmissions across different time segments (slots) while maintaining manageable resource allocation within each segment, resolving the contradiction between transmission efficiency and allocation complexity.
2Productivity
If multiple CSI-RSs are transmitted through multiple slots, then the resource allocation remains manageable, but the transmission efficiency of CSI-RSs decreases
Solution Approach 1:
The patent merges multiple consecutive slots into a unified first time unit for resource allocation purposes. This merging allows the system to treat the multi-slot period as a single allocation block, enabling efficient distribution of multiple CSI-RS resources across the combined time resources while reducing the overall time required compared to sequential single-slot transmissions.
Solution Approach 2:
By introducing the first time unit as a higher-level time domain structure encompassing multiple slots, the patent creates a new temporal dimension for resource allocation. This allows multiple CSI-RS resources to be transmitted within the extended time unit, improving transmission efficiency while the structured organization minimizes time loss through systematic resource distribution.
Data Source
Figure 1~4
Figure 5~8
Figure 9A~10
AI summary
Provided are a sidelink communication method, and a terminal device. The method comprises: a first terminal device determining a first channel state information reference signal (CSI-RS) resource in a first time unit, wherein the first time unit meets either of the following conditions: the first time unit comprising a plurality of consecutive slots; or the first time unit comprising one slot, and the first CSI-RS resource being a transmission resource reserved by the terminal device for sending a CSI-RS. The method is conducive to improving the transmission efficiency of CSI-RSs.