PC5 RRC Multi-Carrier Handling for Efficient Sidelink Links
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing PC5 RRC connections over multiple carriers, leading to increased overhead and inefficiencies in establishing and maintaining sidelink communications.
Innovation Solution
Implementing a method for managing PC5 RRC connections per carrier, allowing for independent configuration and management of sidelink HARQ entities on each carrier, and establishing PC5 RRC connections per SL carrier, with separate radio bearers for each carrier to optimize communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If PC5 RRC connections are managed across multiple carriers using a single shared configuration, then device complexity is reduced, but overhead increases and communication efficiency deteriorates
Solution Approach 1:
The patent segments the PC5 RRC connection management by establishing separate connections per carrier instead of using a single shared connection across multiple carriers. Each carrier gets its own PC5 RRC connection and HARQ entities, allowing independent configuration and management. This segmentation resolves the contradiction by accepting increased device complexity (managing multiple connections) in exchange for significantly improved sidelink communication efficiency and reduced overhead through carrier-specific optimizations.
2Productivity
If PC5 RRC connections are established per carrier with separate HARQ entities, then sidelink communication efficiency improves, but device complexity and configuration overhead increase
Solution Approach 1:
The patent applies local quality by allowing each carrier to have its own PC5 RRC connection and HARQ entities with carrier-specific configurations. Instead of a uniform approach across all carriers, each carrier can be optimized independently with appropriate parameters, resource allocations, and HARQ settings tailored to its specific requirements. This resolves the contradiction by enabling high efficiency through localized optimization while managing complexity through systematic per-carrier configuration.
3Reliability
If multiple PC5 RRC connections are maintained per carrier, then communication reliability improves, but system complexity and resource overhead increase
Solution Approach 1:
The patent implements preliminary action by establishing dedicated PC5 RRC connections and HARQ entities for each carrier in advance, before actual sidelink communication occurs. This pre-configuration ensures that reliable communication paths are already in place and optimized for each carrier's characteristics, improving reliability without requiring complex dynamic management during operation. The systematic setup resolves the contradiction by front-loading the complexity management while achieving high reliability through dedicated connections.
Data Source
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AI summary
Provided are a method for a first device performing wireless communication, and a device supporting same. The method may comprise the steps of: acquiring configuration information related to a plurality of carriers; acquiring logical channel data; and transmitting a PC5 radio resource control (RRC) message to a second device. For example, the PC5 RRC message may be transmitted on the basis of a first carrier included among one or more carriers related to the logical channel data, among the plurality of carriers.