PDCP Duplication Carrier Association Logic
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Solution Overview
Problem
In 5G mobile communication systems, the PDCP duplication transmission function is limited to two RLC entities and two logical channels, and there is a challenge in determining the correct carriers to use for remaining logical channels after one logical channel is deactivated, affecting the association relationship between carriers and logical channels.
Innovation Solution
A communication method that determines whether a logical channel in an activated state and a deactivated channel belong to the same MAC entity to establish or re-establish the association relationship between carriers and logical channels, allowing for correct operation and improved system capacity by identifying suitable carriers for remaining logical channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the PDCP duplication transmission function is limited to two RLC entities and two logical channels, then the association relationship between carriers and logical channels can be clearly maintained, but the system capacity and flexibility are reduced
Solution Approach 1:
The patent applies dynamics by making the association relationship between logical channels and carriers flexible rather than fixed. When a logical channel is deactivated, the system dynamically reconfigures the association relationship, allowing the remaining logical channel to be associated with different carriers based on current transmission needs, thus resolving the contradiction between maintaining clear associations and achieving system flexibility
Solution Approach 2:
The patent changes the parameter of association relationship configuration dynamically. Instead of maintaining a static one-to-one mapping, the system allows the association parameters to be reconfigured when logical channels are activated or deactivated, enabling the same logical channel to be associated with different carriers at different times, thereby improving system capacity while maintaining operational clarity
2Productivity
If a logical channel is deactivated in a PDCP duplication transmission system, then resource utilization is improved, but the determination of correct carriers for remaining logical channels becomes problematic
Solution Approach 1:
The patent implements a feedback mechanism where the system continuously monitors the activation state of logical channels and automatically adjusts the carrier association relationships in response. When a logical channel is deactivated, the feedback triggers a reconfiguration process that determines the appropriate carrier associations for remaining logical channels, making the operation straightforward despite the dynamic changes
Solution Approach 2:
The system performs self-service by automatically determining and reconfiguring carrier associations when logical channels are deactivated. The network device autonomously manages the association relationships without requiring manual intervention, resolving the carrier determination problem while improving resource utilization efficiency
Data Source
AI summary
This application relates to a communication method and device. The communication method includes: receiving first signaling, where the first signaling indicates to deactivate that a first logical channel; and determining, depending on whether a logical channel in an activated state and the first logical channel belong to a same MAC entity, whether an association relationship between a carrier and the logical channel in the activated state applies, where the first logical channel and the logical channel in the activated state belong to a same radio bearer, and a PDCP duplication transmission function is configured for the radio bearer. According to the method provided in embodiments of this application, after a logical channel is deactivated, carriers that should be used for a remaining logical channel can be known, so that a terminal device can perform a correct operation.