V2X Transmission Mode Determination via Resource Measurement
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Solution Overview
Problem
In V2X communication scenarios, conflicts between transmission resources can occur due to autonomously selected transmission modes and parameters by terminal devices, leading to resource collisions, especially in environments with a large number of users and limited spectrum resources.
Innovation Solution
A method and apparatus for determining a transmission mode and parameter by measuring a resource set based on information such as subcarrier spacing, quality of service parameters, and feedback information, allowing for better autonomous selection of transmission modes and parameters to avoid resource conflicts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If terminal devices autonomously select transmission modes and parameters, then communication flexibility and device independence are improved, but resource conflicts and collisions increase
Solution Approach 1:
The patent implements a feedback mechanism where terminal devices measure resource set qualities (using metrics like RSSI, RSRP, CBR, CR) and adjust their transmission mode selections based on these measurements. The network device also provides feedback information to guide terminal device decisions, creating a closed-loop system that reduces resource conflicts while maintaining autonomous selection capabilities
Solution Approach 2:
The patent changes the parameter selection approach by introducing measurement-based thresholds. Terminal devices compare measured resource set parameters (quality metrics) against thresholds to determine transmission modes, dynamically adjusting parameters like subcarrier spacing, cyclic prefix length, and transmission power based on measured channel conditions and resource availability
2Measurement precision
If measurement-based transmission mode determination is implemented, then transmission mode selection accuracy is improved, but system complexity increases
Solution Approach 1:
The patent segments the measurement and determination process into distinct, manageable components: resource set identification, quality measurement (RSSI, RSRP, CBR, CR), threshold comparison, and transmission mode selection. This segmentation allows each component to be implemented independently with standardized procedures, reducing overall system complexity while maintaining measurement precision
Data Source
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AI summary
This application relates to the communications field, and provides a transmission mode determining method and an apparatus, to better select a transmission mode and/or a transmission parameter of data autonomously. The transmission mode determining method includes: A first device measures a first resource set based on first information, to obtain a first measurement value, where the first information includes at least one of the following information: a subcarrier spacing of the first resource set, a quality of service parameter of first data, and feedback information between the first device and a second device, and the first resource set is to be used to transmit the first data. The first device determines a transmission mode of the first data based on the first measurement value, and/or determines a transmission parameter of the first data based on the first measurement value.