Selective RLC Entity Activation for Duplication Transmission
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Solution Overview
Problem
In wireless communication systems, the existing methods for activating and deactivating RLC entities in multiple PDCP duplication scenarios lead to resource wastage and performance degradation due to unnecessary transmission of duplication across all RLC entities, especially in scenarios combining carrier aggregation (CA) and dual connectivity (DC).
Innovation Solution
A method where a terminal device determines the conditions for activating or deactivating duplication transmission based on various factors such as channel quality, service type, and threshold values, allowing selective RLC entities to transmit duplication, thereby optimizing resource utilization and improving system performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the activation or deactivation method for RLC entity in Rel-15 is used, then the duplication transmission can be activated, but all RLC entities will transmit the duplication causing resource waste and system performance degradation
Solution Approach 1:
The patent segments the RLC entities into different groups based on their transmission status. Instead of activating all RLC entities simultaneously, the method divides them into first RLC entities (to be activated) and second RLC entities (to be deactivated), allowing selective activation only for those needed for duplication transmission, thereby reducing resource waste while maintaining reliability
Solution Approach 2:
The patent applies local quality by differentiating the activation status of different RLC entities based on their specific roles in the duplication transmission. Not all RLC entities are treated equally - only the necessary ones are activated while others remain deactivated, optimizing resource utilization according to local transmission needs
2Reliability
If the duplication transmission method is used, then the transmission reliability is improved, but unnecessary transmission resources are occupied causing system performance degradation
Solution Approach 1:
The patent applies partial action by activating only the necessary RLC entities for duplication transmission rather than all RLC entities. The method determines a first RLC entity and a second RLC entity based on transmission needs, activating only the required portion to achieve duplication reliability without the excessive action of activating all entities, thus maintaining system performance
3Reliability
If all RLC entities transmit duplication during activation, then the duplication can be transmitted, but the resource utilization is inefficient
Solution Approach 1:
The patent extracts the unnecessary activation of RLC entities from the duplication transmission process. By identifying and separating the necessary RLC entities from the complete set, the method removes the excessive activation step, keeping only the essential RLC entities active for duplication transmission and thereby improving resource utilization efficiency
Data Source
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AI summary
Embodiments of the present application provide a wireless communication method, a terminal device and a network device, in a scenario where CA and DC are combined, one PDCP entity may use more than two RLC entities to transmit a duplication, thus avoiding using all RLC entities to transmit the duplication during the activation, reducing a waste of resources in the duplication transmission scenario, improving system resource utilization, and ensuring the transmission performance of services such as a URLLC service while ensuring the overall transmission performance of the system. The wireless communication method is applied to a scenario where CA and DC are combined, and includes: in a case where a first condition is met, determining, by a terminal device, whether to perform a duplication transmission, and/or, determining, by the terminal device, whether to trigger a duplication transmission.