Anchor Carrier Resource Allocation for Sidelink
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Solution Overview
Problem
In sidelink V2X communication, existing methods configure resource pools only on a single carrier, leading to reduced reception opportunities for receiving UEs due to parallel transmissions on different carriers with long intervals, which is inefficient and may disrupt communication.
Innovation Solution
A method for allocating resources based on an anchor carrier, where the UE selects an anchor carrier or resource pool and aligns non-anchor carriers/resources using a configured or dynamically determined offset, ensuring synchronized sidelink transmissions across multiple carriers to enhance reception opportunities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If resource pools are configured on multiple carriers with parallel transmissions, then system capacity and frequency band utilization are improved, but reception opportunities for receiving UEs are reduced due to long intervals between transmissions
Solution Approach 1:
The patent implements periodic sidelink transmissions across multiple carriers with configured periodicities. By establishing regular transmission intervals on multiple carriers simultaneously, the system maintains high capacity utilization while ensuring that receiving UEs have frequent reception opportunities across the aggregated carriers, thus resolving the contradiction between system capacity and reception reliability
Solution Approach 2:
The patent combines multiple carriers into a carrier aggregation configuration for sidelink communication. By merging the resources of multiple carriers and coordinating transmissions across them with unified resource pool configurations, the system achieves both high capacity (utilizing all carriers) and reliable reception (coordinated transmission timing ensures reception opportunities)
2Device complexity
If resource pools are configured on a single carrier, then transmission structure is simplified, but communication efficiency is reduced and reception opportunities are limited
Solution Approach 1:
The patent creates a universal resource pool configuration that functions across multiple carriers simultaneously. The same resource pool parameters (periodicity, offset, duration) are applied across all aggregated carriers, providing a multi-functional transmission structure that maintains simplicity while enabling efficient communication on multiple carriers through a unified configuration approach
3Adaptability or versatility
If parallel transmissions are performed on different carriers with long intervals, then frequency band utilization is improved, but communication reliability may be disrupted
Solution Approach 1:
The patent implements feedback mechanisms where UEs report reception status and channel conditions across the aggregated carriers. Based on this feedback, the network can adjust the transmission configuration, periodicity, and resource allocation to maintain both high frequency band utilization and communication reliability, dynamically optimizing the balance between these competing requirements
Data Source
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AI summary
A method and apparatus for allocating resources for a sidelink transmission in a wireless communication system is provided. A user equipment (UE) selects a first carrier, i.e. anchor carrier, among multiple carriers, and allocates a first resource on the first carrier. The UE allocates a second resource on a second carrier, i.e. non-anchor carrier, based on an offset from the first resource on the first carrier. The UE performs the sidelink transmission by using the first resource on the first carrier and the second resource on the second carrier.