Sidelink MCS Table Configuration for V2X Reliability
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Solution Overview
Problem
Current sidelink communication methods in wireless communication systems face challenges in efficiently managing resource pools and configuring modulation and coding schemes for reliable and low-latency Vehicle-to-Everything (V2X) communications, particularly in scenarios like vehicle platooning, advanced driving, and remote driving, where precise data exchange is critical.
Innovation Solution
The method involves determining a sidelink resource pool and transmitting modulation and coding scheme (MCS) information through sidelink control information on a physical sidelink control channel, with an MCS table configured for each resource pool, enabling efficient sidelink communication between user equipment (UEs).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single MCS table is used for all resource pools, then device complexity is reduced, but communication reliability deteriorates due to inability to optimize for different service requirements
Solution Approach 1:
The patent divides the single MCS table into multiple resource pool-specific MCS tables. Each resource pool has its own MCS table configured according to specific service requirements (e.g., V2X, enhanced mobile broadband). This segmentation allows optimized MCS selection for different service types while maintaining independent configuration for each resource pool, resolving the contradiction between reliability and complexity.
Solution Approach 2:
The patent introduces dynamic MCS table selection based on service type and resource pool configuration. The system can dynamically switch between different MCS tables depending on the active service and resource pool, enabling adaptive optimization for varying communication requirements without requiring all tables to be simultaneously active, thus managing complexity while maintaining reliability.
2Productivity
If resource allocation is optimized for specific services, then service performance is improved, but system complexity increases due to multiple configuration parameters
Solution Approach 1:
The patent applies local quality by configuring MCS tables with specific characteristics tailored to each resource pool's service requirements. For example, V2X resource pools use MCS tables optimized for low latency and high reliability, while eMBB pools use tables optimized for high throughput. This localized optimization improves service performance without requiring global reconfiguration of the entire system.
Solution Approach 2:
The patent changes key parameters such as modulation order and coding rate in MCS tables based on service requirements. By adjusting these parameters differently for each resource pool, the system achieves service-specific optimization while maintaining a structured configuration framework that manages complexity through parameterization rather than structural complexity.
3Productivity
If MCS information is transmitted for each resource pool, then communication efficiency is improved, but signaling overhead increases
Solution Approach 1:
The patent performs preliminary configuration of MCS tables for each resource pool before actual data transmission. The MCS table indices and configurations are predetermined and stored in the UE, allowing rapid selection during transmission without requiring extensive real-time signaling. This preliminary action reduces signaling overhead while maintaining communication efficiency.
Solution Approach 2:
The patent uses MCS table indices as compact representations of full MCS configurations. Instead of transmitting complete MCS parameter sets, the system transmits concise index values that reference pre-configured tables, significantly reducing signaling overhead while preserving full communication efficiency through the copied configuration data.
Data Source
AI summary
According to an embodiment of the present disclosure, provided is a method for performing wireless communication by a first device. The method comprises the steps of: determining a sidelink resource pool for sidelink communication; transmitting MCS information to a second device through SCI on PSCCH transmitted on the sidelink resource pool; and transmitting PSSCH related to the PSCCH to the second device, wherein an MCS table related to the MCS information may be set for the first device for each resource pool.