Sidelink Control Information Segmentation for V2X Resource Allocation
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Solution Overview
Problem
Current communication systems face challenges in efficiently configuring sidelink resources for data transmission in V2X communications, which affects the performance of Vehicle-to-Everything (V2X) communications.
Innovation Solution
The method involves generating sidelink control information (SCI) that includes scheduling information and resource allocation information for data transmission, and transmitting this SCI on a physical sidelink control channel (PSCCH) followed by data transmission on a physical sidelink shared channel (PSSCH) indicated by the scheduling information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If sidelink resources are configured for periodic data transmission using configured grant (CG) resources, then data transmission can be performed periodically, but resource allocation efficiency and system performance deteriorate due to insufficient flexibility in resource configuration
Solution Approach 1:
The resource allocation information is segmented into two parts: first resource allocation information indicating a resource region, and second resource allocation information indicating specific resources within that region. This segmentation allows the first terminal to provide coarse-grained resource region indication while the second terminal performs fine-grained resource selection, improving both efficiency and flexibility.
Solution Approach 2:
The patent introduces a two-dimensional resource indication approach: the first resource allocation information provides indication in one dimension (resource region), and the second resource allocation information provides indication in another dimension (specific resources within the region). This dimensional approach resolves the contradiction by distributing the complexity across different levels.
2Measurement precision
If detailed resource allocation information is provided for all sidelink resources, then resource allocation precision improves, but signaling overhead and system complexity increase
Solution Approach 1:
The patent extracts the resource allocation information into two separate components: first resource allocation information that indicates a resource region, and second resource allocation information that indicates specific resources within that region. This extraction allows precise resource allocation while reducing signaling overhead by separating the indication into hierarchical levels.
3Adaptability or versatility
If multiple SCIs are transmitted for scheduling different data transmissions, then resource scheduling flexibility improves, but control channel overhead and processing complexity increase
Solution Approach 1:
The first SCI is transmitted in advance to indicate the resource region for subsequent data transmission. This preliminary action allows the second SCI to focus only on indicating specific resources within the pre-defined region, reducing the overall complexity while maintaining scheduling flexibility for multiple data transmissions.
Data Source
AI summary
Disclosed is a method for configuring a sidelink resource in a communication system. An operation method of a first terminal comprises the steps of: generating SCI #n including scheduling information of data #n and resource allocation information for transmission or reception of data #m; transmitting SCI #n to a second terminal via PSCCH #n; and transmitting data #n to the second terminal via PSSCH #n indicated by the scheduling information included in SCI #n. Therefore, the performance of a communication system can be improved.