Sidelink Subcarrier Spacing Determination via Indication Information
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In 5G New Radio Access Technology, the receive-end device faces high workload and complexity in decoding communications system parameters due to blind detection modes, particularly in determining subcarrier spacing for sidelink channels.
Innovation Solution
A method where the receive-end device determines communications system parameters based on obtained indication information or a mapping relationship between influencing factors and parameters, reducing the need for blind detection by using indication information transmitted by network-side or transmit-end devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If blind detection mode is used to determine communications system parameters, then the receive-end device can decode information without prior knowledge of parameters, but the workload and decoding complexity of the receive-end device greatly increase
Solution Approach 1:
The transmit-end device performs preliminary action by determining the communications system parameter and embedding indication information into the transmitted signal before the receive-end device receives it. This allows the receive-end device to obtain parameter information in advance through indication information rather than through complex blind detection, thereby reducing decoding complexity while maintaining parameter determination capability
Solution Approach 2:
Indication information serves as an intermediary carrier that conveys the communications system parameter from the transmit-end device to the receive-end device. Instead of the receive-end device directly performing complex blind detection on the signal, it first extracts the parameter through the simpler indication information, which acts as a mediator reducing the overall system complexity
2Ease of operation
If blind detection mode is used to determine communications system parameters, then the receive-end device can independently decode information, but the workload of the receive-end device greatly increases
Solution Approach 1:
The parameter determination is performed in advance by the transmit-end device and conveyed through indication information, allowing the receive-end device to avoid time-consuming blind detection processes while maintaining independent decoding capability
3Adaptability or versatility
If multiple communications system parameters are supported for sidelink communication, then the system flexibility and adaptability improve, but the complexity of parameter determination and decoding increases
Solution Approach 1:
Indication information acts as an intermediary that conveys the selected parameter from the multiple available options, allowing the system to maintain flexibility in parameter selection while simplifying the actual determination process at the receive-end device through direct indication rather than complex selection logic
Data Source
AI summary
This disclosure provides a method for determining a communications system parameter, a method for indicating a communications system parameter, and devices thereof. The method for determining a communications system parameter includes: determining a communications system parameter based on obtained first indication information, and/or determining a communications system parameter based on a mapping relationship between an influencing factor of the communications system parameter and the communications system parameter, where the communications system parameter includes a subcarrier spacing of a sidelink channel, and the communications system parameter is used to decode information carried on the sidelink channel.