Sidelink Carrier Aggregation Validity Area Management
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G NR, face challenges in optimizing sidelink carrier aggregation to enhance data rate, latency, and reliability, especially in scenarios like V2V, V2P, and V2X communications.
Innovation Solution
The proposed solution involves a user equipment (UE) that receives an SL resource configuration from a serving cell of one Radio Access Technology (RAT) and determines validity area information for both RATs. The UE then identifies a validity area for the SL resource configuration based on this information, allowing it to access SL resources within that area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If SL resource configuration is received through serving cell of first RAT, then resource utilization is improved, but device complexity increases due to multi-RAT validity area management
Solution Approach 1:
The patent segments the validity area information management by separating first validity area information (associated with first RAT) and second validity area information (associated with second RAT). The UE determines these validity areas independently and identifies the applicable validity area based on the serving RAT, thereby managing complexity through structured segmentation while enabling resource configuration reception across multiple RATs.
2Productivity
If UE monitors SL resources across multiple RATs, then data rate is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic power management by having the UE adaptively monitor SL resources based on the identified validity area. When the UE determines it is within a validity area for a particular RAT, it activates monitoring for that RAT; otherwise, it suspends monitoring. This dynamic on-demand approach enables high data rates when resources are available while minimizing power consumption during transitions or when resources are unavailable.
3Reliability
If SL resource configuration is optimized for multiple RATs, then reliability is improved, but system complexity increases
Solution Approach 1:
The patent applies preliminary action by having the network pre-configure SL resource configurations for multiple RATs and pre-determine validity area information before the UE needs to use them. The UE receives and stores these configurations in advance, along with validity area information indicating where each RAT's resources are available. This preliminary preparation ensures reliable communication by having resources ready before handovers or RAT switches occur, while keeping the actual runtime complexity low.
Data Source
AI summary
A user equipment (UE) includes one or more non-transitory computer-readable media containing computer-executable instructions embodied therein and at least one processor coupled to the one or more non-transitory computer-readable media. The at least one processor is configured to receive through a serving cell of a first Radio Access Technology (RAT), a sidelink (SL) resource configuration of a second RAT, determine first validity area information associated with the first RAT and second validity area information associated with the second RAT, and identify a validity area of the SL resource configuration based on the first validity area information and the second validity area information.