Sidelink Resource Allocation via BWP Segmentation in V2X
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Solution Overview
Problem
Current wireless communication systems, particularly in V2X scenarios, face challenges in efficiently managing sidelink communication resources and ensuring reliable data transmission with low latency, especially in scenarios like vehicle platooning and advanced driving, where precise and timely data exchange is critical.
Innovation Solution
The implementation of a Next-Generation Radio Access Network (NG-RAN) with advanced sidelink communication protocols, including the use of Bandwidth Parts (BWP) and resource allocation mechanisms, allows for efficient sidelink communication by configuring specific resource blocks and numerologies for V2X communications, enabling dynamic resource allocation and low-latency data exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sidelink communication resources are allocated dynamically to support diverse V2X scenarios, then adaptability and communication capacity are improved, but resource management complexity and overhead increase
Solution Approach 1:
The patent segments V2X communication resources by introducing separate BWP configurations specifically for sidelink communication. This allows the system to divide the overall resource space into dedicated sidelink BWPs and regular uplink BWPs, enabling scenario-specific resource allocation without managing all resources centrally, thus reducing management complexity while maintaining adaptability.
Solution Approach 2:
The patent introduces a new dimension for resource management by configuring sidelink-specific BWPs with dedicated numerologies and parameter sets. This dimensional separation allows independent optimization of sidelink resources without affecting uplink resources, resolving the contradiction between adaptability and complexity.
2Adaptability or versatility
If multiple BWPs with different numerologies are configured for sidelink communication, then support for diverse V2X scenarios is improved, but configuration complexity and signaling overhead increase
Solution Approach 1:
The patent creates a universal BWP configuration framework where sidelink BWPs can serve multiple V2X scenarios (platooning, advanced driving, extended sensors, remote driving) through a single standardized configuration mechanism. This multi-functional approach allows diverse scenarios to be supported without creating separate configuration systems for each, reducing overall complexity.
Solution Approach 2:
The patent manages configuration complexity by dynamically changing numerology parameters (subcarrier spacing, cyclic prefix length) within the BWP configuration framework. This allows flexible adaptation to different V2X scenario requirements while maintaining a unified configuration structure, rather than creating separate configurations for each parameter variation.
3Adaptability or versatility
If sidelink DCI format is designed with comprehensive resource allocation fields, then resource allocation flexibility is improved, but DCI size and processing overhead increase
Solution Approach 1:
The patent extracts resource allocation information from the DCI payload by utilizing fields already present in the BWP configuration. This allows the DCI to reference pre-configured resource parameters rather than carrying complete resource allocation details, significantly reducing DCI size while maintaining allocation flexibility through the combination of compact DCI fields and detailed BWP configurations.
4Productivity
If search space configurations for sidelink DCI overlap with uplink DCI search spaces, then monitoring efficiency is improved, but detection complexity and error rate increase
Solution Approach 1:
The patent applies local quality differentiation by configuring search spaces with sidelink-specific parameters (monitoring occasions, aggregation levels, RNTI types) that distinguish them from uplink search spaces. This localized differentiation allows UEs to efficiently monitor both types of DCI while reliably distinguishing between them through parameter matching, resolving the contradiction between monitoring efficiency and detection reliability.
Data Source
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AI summary
Proposed is a method for a first device for communicating wirelessly. The method may comprise a step for receiving first control information in a first search space related to the first control information, and receiving second control information in a second search space related to the second control information. For example, on the basis of a base station allocating resources related to sidelink transmission to the first device in a carrier in which Uu communication is performed, the first search space related to the first control information and the second search space related to the second control information may overlap.