5G NR V2X Resource Sub-Allocation Among Vehicles
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Solution Overview
Problem
Existing V2X communication systems lack the flexibility to dynamically allocate and transmit licensed resources among vehicles in platooning and extended sensors scenarios, leading to inefficiencies and resource wastage due to static user indications.
Innovation Solution
A communication apparatus dynamically allocates and transmits licensed resources to target vehicles using a flexible resource allocation mechanism, allowing vehicles to autonomously or in response to service requests to sub-allocate resources through dedicated signaling, ensuring efficient utilization and adaptation to changing vehicle dynamics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If static resource allocation is used in V2X communications, then resource management is simplified, but resource utilization efficiency deteriorates due to inability to adapt to dynamic vehicle scenarios
Solution Approach 1:
The patent implements dynamic resource allocation where the base station continuously monitors vehicle scenarios (platooning, extended sensors) and dynamically adjusts resource grants based on real-time service requests and channel conditions, transforming the static resource allocation mechanism into a dynamic one that adapts to changing V2X communication needs
Solution Approach 2:
The patent segments the resource allocation process into distinct phases: initial resource grant from base station to source UE, then sub-allocation by source UE to target UEs, with each phase having specific signaling messages and resource types, allowing manageable complexity while achieving dynamic adaptation
2Loss of time
If licensed resources are assigned by base stations in a semi-static manner, then operator control is maintained, but responsiveness to dynamic V2X service requirements deteriorates
Solution Approach 1:
The base station performs preliminary resource granting to source UEs before actual V2X communication occurs, establishing a pool of available resources that source UEs can then sub-allocate dynamically to target UEs based on real-time service requests, reducing latency while maintaining operator control through the initial grant
Solution Approach 2:
The source UE acts as an intermediary between the base station and target UEs, receiving resource grants from the base station and then autonomously sub-allocating these resources to target UEs based on service requests, bridging the gap between operator-controlled resource management and dynamic service requirements
3Adaptability or versatility
If subscriber UEs cannot sub-allocate licensed resources, then operator control is simplified, but flexibility in resource sharing among vehicles deteriorates
Solution Approach 1:
The source UE autonomously performs resource sub-allocation to target UEs based on service requests and channel conditions without requiring direct operator intervention for each allocation, allowing flexible resource sharing while reducing signaling overhead and improving responsiveness
Solution Approach 2:
The system implements feedback mechanisms where target UEs send service requests to source UEs, and source UEs monitor resource utilization and channel conditions to make informed sub-allocation decisions, with the base station receiving reports on resource usage to maintain overall system control
Data Source
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AI summary
The present disclosure provides communication apparatuses and communication methods for 5G NR based V2X communications. The communication apparatuses include a communication apparatus which comprises a receiver, which in operation, receives from a base station a first resource information indicating a first resource allocated by the base station; and a transmitter, which in operation, transmits to a target communication apparatus or a plurality of target communication apparatuses including the target communication apparatus a second resource information indicating a second resource allocated to at least the target communication apparatus, the second resource including a whole or a part of the first resource.