NR V2X Sidelink Resource Allocation for Unicast and Broadcast
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing technologies face challenges in efficiently managing resource allocation and configuration for advanced vehicle-to-everything (V2X) use cases in New Radio (NR) networks, particularly in handling unicast and broadcast communication modes, especially for vehicular user equipment (UEs) that may be out of coverage or have varying mobility profiles.
Innovation Solution
The proposed solution involves reusing the LTE resource allocation framework for NR V2X, with UE devices capable of autonomous resource selection and network scheduled operations, utilizing dedicated and exception resource pools based on geographical position and mobility, and implementing congestion control mechanisms to ensure high-priority traffic is handled effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If autonomous resource selection is implemented for NR V2X, then resource allocation flexibility is improved, but resource contention and collision between unicast and broadcast traffic increases
Solution Approach 1:
The resource pool is segmented into separate unicast resource pools and broadcast resource pools. This segmentation allows independent management and allocation of resources for unicast and broadcast traffic, preventing resource contention and collision between the two traffic types while maintaining allocation flexibility through autonomous selection within each dedicated pool.
2Reliability
If separate resource pools are allocated for unicast and broadcast, then resource contention is reduced, but device complexity and configuration overhead increases
Solution Approach 1:
A unified resource allocation framework is designed that can accommodate both unicast and broadcast operations through a common set of procedures and mechanisms. The framework provides multi-functionality by supporting different traffic types with a single standardized approach, reducing device complexity while maintaining separate resource pools for contention reduction.
3Device complexity
If LTE resource allocation framework is reused for NR V2X, then implementation complexity is reduced, but suitability for advanced V2X use cases and out-of-coverage scenarios may be compromised
Solution Approach 1:
The LTE resource allocation framework is adapted for NR V2X by modifying key parameters such as resource pool configurations, selection procedures, and congestion control mechanisms. These parameter changes enable the framework to suit advanced V2X use cases and out-of-coverage scenarios while maintaining the simplicity and low implementation complexity of the original LTE approach.
Data Source
AI summary
An apparatus of a user equipment (UE) comprises one or more baseband processors to configure a set of resources for New Radio (NR) vehicle-to-everything (V2X) transmission over sidelink for communication with one or more other UEs, and to allocate the resources for transmitting one or more packets from an NR network to the one or more other UEs via the sidelink. The apparatus can include a memory to store the configuration of resources.