NR-V2X Terminal Resource Allocation via BSR Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing V2X systems lack flexible resource allocation methods, particularly in NR-V2X, where one terminal cannot efficiently allocate transmission resources to other terminals, limiting data interaction and communication efficiency in scenarios like automatic driving that require higher throughput and lower delay.
Innovation Solution
The method allows a first terminal to allocate a transmission resource to a second terminal, enabling direct data transmission between them or between the second terminal and a third terminal, enriching the resource allocation modes in NR-V2X by allowing terminals to autonomously manage their resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If terminal-to-terminal direct communication mode is adopted in V2X system, then spectrum efficiency is improved and transmission delay is reduced, but resource allocation flexibility is limited
Solution Approach 1:
The patent introduces dynamic resource allocation where the first terminal can allocate resources to the second terminal based on real-time communication needs. The resource allocation is not fixed but can be dynamically adjusted according to channel conditions, data traffic, and communication priorities, enabling the system to adapt to varying requirements while maintaining direct communication benefits
Solution Approach 2:
The patent changes the resource allocation parameters by introducing a new dimension where the first terminal acts as a resource controller. The allocation parameters include time resources, frequency resources, and power resources that can be dynamically adjusted based on the communication scenario, enabling flexible resource management in NR-V2X system
2Reliability
If base station allocates SL transmission resource (Mode 3), then resource allocation is centralized and controlled, but transmission delay increases and spectrum efficiency decreases
Solution Approach 1:
The patent extracts the resource allocation function from the base station and assigns it to the first terminal. By taking out the centralized control and distributing it to individual terminals, the system eliminates the transmission delay introduced by base station coordination while maintaining reliable resource allocation through terminal-based decision making
Solution Approach 2:
The first terminal performs self-service by autonomously allocating resources to the second terminal based on its own assessment of communication needs and channel conditions. This self-service mechanism eliminates the need for base station intervention, significantly reducing transmission delay while maintaining allocation reliability through local intelligence
3Loss of time
If terminal determines SL transmission resource through sensing and reservation (Mode 4), then transmission delay is reduced, but resource allocation flexibility and coordination capability are limited
Solution Approach 1:
The patent introduces feedback mechanisms where the first terminal receives information about the second terminal's communication needs and channel conditions, then uses this feedback to make informed resource allocation decisions. This feedback loop enables flexible resource allocation while maintaining low transmission delay through rapid response to changing conditions
Solution Approach 2:
The first terminal performs preliminary actions by proactively allocating resources before the second terminal needs to transmit data. By anticipating communication needs and reserving resources in advance, the system reduces transmission delay while maintaining flexibility through predictive resource management rather than reactive sensing
Data Source
Figure 1~2
Figure 3~5
Figure 6~7
AI summary
Methods and devices for resource allocation and a terminal are provided. The method includes the following. A first terminal receives BSR information from a second terminal. The first terminal allocates a first transmission resource to the second terminal.