Sidelink Resource Allocation for Priority-Based Data Transmission
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In the context of Internet of Vehicles (IoV) systems using LTE-D2D sidelink transmission, the challenge lies in efficiently selecting carriers for multi-carrier data transmission, particularly in ensuring priority-based resource allocation and managing conflicts between high-priority and low-priority data transmissions.
Innovation Solution
A method for UE that selects resources on a target carrier based on preset criteria, including prioritizing high-priority data and determining resource conflicts, allowing for efficient data transmission by allocating resources sequentially and discarding conflicting low-priority resources when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If UE simultaneously transmits data on multiple carriers, then spectral efficiency and transmission speed are improved, but resource allocation complexity and conflict management difficulty increase
Solution Approach 1:
The patent segments the resource pool into multiple carriers (first carrier and second carrier) and further segments resources on each carrier into different priority levels. This segmentation allows the UE to independently manage high-priority and low-priority data transmissions on different carriers, reducing the complexity of overall resource allocation while maintaining high transmission efficiency.
Solution Approach 2:
The patent applies local quality by assigning different priority levels to different resources on the same carrier. High-priority resources are designated for critical data transmissions while low-priority resources are for less critical data. This local differentiation enables efficient resource utilization without requiring complex global coordination, thus improving productivity while managing complexity.
2Reliability
If high-priority data is transmitted first, then data reliability is improved, but transmission delay for low-priority data increases
Solution Approach 1:
The patent segments the transmission resources into multiple carriers with different priority designations. High-priority data is transmitted on dedicated high-priority resources, while low-priority data is transmitted on low-priority resources. This segmentation ensures that high-priority data receives immediate attention (improving reliability) while low-priority data is systematically handled without being completely blocked (reducing delay).
Solution Approach 2:
The patent performs preliminary action by pre-configuring priority-based resource allocation before data transmission begins. The UE is pre-instructed on which carriers and resources are designated for high-priority versus low-priority data, enabling automatic priority-based scheduling without real-time complex decision-making, thus ensuring both reliability for high-priority data and acceptable delay for low-priority data.
3Productivity
If resource pool is shared among multiple carriers, then resource utilization efficiency is improved, but resource conflict probability increases
Solution Approach 1:
The patent segments the shared resource pool into distinct carriers with priority-based resource designation. By dividing the resource pool and assigning specific resources to specific priority levels on specific carriers, the system maintains high resource utilization (as resources are fully allocated across priorities) while minimizing conflicts (as the segmentation creates clear separation between high-priority and low-priority transmissions).
Solution Approach 2:
The patent applies local quality by designating specific local resources on each carrier for specific priority levels. This local differentiation allows the system to efficiently utilize the overall resource pool while preventing conflicts through localized resource assignment rules, where each carrier's high-priority resources are protected from low-priority interference.
Data Source
AI summary
A method for resource allocation and an apparatus in a communication device are provided. The method includes that: a sidelink logical channel with high priority is selected from sidelink logical channels belonging to a target address, where the priority of the logical channel is associated with a ProSe Per Packet Priority (PPPP) and the logical channel with high priority is associated with high PPPP; resources are allocated for data in the sidelink logical channel with the high priority; and data transmission is performed between UEs based on the allocated resources.