UE Sidelink Resource Scheduling With Carrier-Based Interference Control
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Solution Overview
Problem
Existing wireless communication networks face challenges in managing interference that degrade performance, particularly for devices with stringent latency and reliability requirements such as Industrial Internet of Things (IIoT) traffic, which are not adequately addressed by prior art.
Innovation Solution
The method involves scheduling resources for a sidelink between a first UE and a specified second UE, using control signaling to identify the second UE, and implementing the sidelink transmission, which includes utilizing downlink control information (DCI) and radio resource control (RRC) signaling to manage resource allocation and interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a UE is configured to monitor PDCCH in multiple component carriers (CCs) of carrier aggregation (CA), then the UE can receive scheduling information for sidelink communication, but the power consumption of the UE increases
Solution Approach 1:
The patent divides the monitoring task by introducing a master component carrier (MCC) and secondary component carriers (SCCs). The UE monitors PDCCH primarily on the MCC, and only selectively monitors SCCs when needed for specific sidelink communications. This segmentation reduces overall monitoring overhead and power consumption while maintaining full sidelink functionality.
Solution Approach 2:
The patent introduces a scheduling component carrier as an intermediary that carries downlink control information (DCI) for scheduling sidelink resources. This intermediary approach allows the UE to receive all scheduling information through a dedicated carrier rather than monitoring all component carriers, thereby reducing power consumption while maintaining adaptability.
2Reliability
If the UE monitors PDCCH on all component carriers to ensure reception of scheduling information, then scheduling reliability is improved, but the complexity of the UE increases
Solution Approach 1:
The patent segments the component carriers into master and secondary categories, with the MCC bearing the primary responsibility for carrying scheduling information. This segmentation allows the UE to focus monitoring efforts on the MCC, reducing complexity while maintaining reliability through the dedicated scheduling role of the master carrier.
Solution Approach 2:
The master component carrier is designed to serve multiple functions: it carries both uplink/downlink data scheduling and sidelink scheduling information. This multi-functionality reduces the need for separate monitoring mechanisms, thereby reducing UE complexity while ensuring reliable reception of all scheduling information.
3Adaptability or versatility
If the network schedules PDCCH on multiple component carriers for sidelink communication, then resource allocation flexibility is improved, but the signaling overhead increases
Solution Approach 1:
The patent designates a scheduling component carrier as an intermediary that consolidates the transmission of downlink control information for sidelink resources. This intermediary approach maintains resource allocation flexibility by allowing network control across multiple carriers while reducing signaling overhead by centralizing scheduling information transmission on a dedicated carrier.
Data Source
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AI summary
Systems and non-transitory computer-readable mediums for scheduling resources for a specific sidelink are described. Some embodiments provide scheduling of resources for a sidelink between a first user equipment (UE) in communication with a base station and a specified second UE in communication with the first UE, such as using downlink control information (DCI) and/or radio resource control (RRC) signaling. The scheduling of sidelink resources may be with respect to a dynamic grant (DG) or a configured grant (CG). Other aspects and features are also claimed and described.