5G V2X Sidelink Resource Allocation for Reliable Low-Latency Links
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Solution Overview
Problem
Existing V2X communication systems face challenges in meeting the stringent data rate, latency, reliability, and communication range requirements for advanced applications such as vehicles platooning, extended sensors, and remote driving, particularly in 5G V2X scenarios.
Innovation Solution
Implementing resource management methods and systems on sidelink for V2X scenarios, including frequency and time division multiplexing with OFDM waveforms, static, semi-persistent, and dynamic resource configurations, assisted and local scheduling, and resource allocation modes with and without network control, along with sensing schemes for periodic and aperiodic data transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If resource allocation is optimized for advanced V2X applications, then data rate and reliability are improved, but system complexity increases
Solution Approach 1:
The patent segments resource allocation into multiple modes (mode 1 with network control, mode 2 with UE autonomous selection, mode 3 with sensing-based selection, mode 4 with pre-configured resources). Each mode handles specific V2X scenarios, dividing the complex resource management task into manageable segments that can be selected based on application requirements.
Solution Approach 2:
The patent implements dynamic resource allocation where UEs can switch between different resource allocation modes based on channel conditions, traffic patterns, and service requirements. The system dynamically adjusts sensing windows, resource selection parameters, and allocation strategies to adapt to changing V2X communication demands while maintaining reliability.
2Reliability
If sensing-based resource selection is implemented, then collision avoidance is improved, but processing time and complexity increase
Solution Approach 1:
The patent implements preliminary sensing actions where UEs perform channel sensing during defined sensing windows before resource selection. The system pre-identifies available resources by sensing PSCCH transmissions from other UEs, pre-calculates resource selection parameters, and prepares candidate resource sets in advance of actual data transmission, reducing processing time during critical communication moments.
3Adaptability or versatility
If multiple resource allocation modes are supported, then adaptability to different V2X scenarios is improved, but system complexity increases
Solution Approach 1:
The patent creates a universal resource allocation framework that supports multiple allocation modes (1, 2, 3, 4) within a single V2X system. Each mode is designed to handle specific scenario types (network-controlled, autonomous, sensing-based, pre-configured), allowing the system to universally accommodate diverse V2X applications including platooning, extended sensors, and remote driving through appropriate mode selection.
Data Source
AI summary
Methods and systems are disclosed for resource management on Sidelink for vehicle to everything (V2X) scenarios. Example methods and systems for a Resource Structure on Sidelink are disclosed. Control and data channels may be Frequency Division Multiplexed (FDMed) or Time Division Multiplexed (TDMed) with an Orthogonal Frequency Division Multiplexing (OFDM) waveform. Example methods and systems for a Resource Configuration on Sidelink are disclosed. The resource configuration may be statically configured or may be locally configured. Example methods and systems for Assisted Resource Allocation are disclosed. Assisted Sensing may be performed by a group lead or RSU and local scheduling may be performed by a group lead or RSU.