Packet Duplication Control in 5G Wireless Systems
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing packet duplication transmission, particularly in 5G communication systems operating in ultra-high-frequency bands, which can lead to inefficiencies in radio resource usage.
Innovation Solution
A method and apparatus for controlling packet duplication transmission in a wireless communication system, where a user equipment (UE) receives a packet duplication configuration through a radio resource control (RRC) message from a base station, determines which radio link control (RLC) entities are configured for uplink packet duplication, and performs packet duplication transmission using the designated RLC entities when activated.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If packet duplication transmission is implemented in 5G wireless communication systems, then reliability of data transmission is improved, but radio resource usage efficiency deteriorates
Solution Approach 1:
The patent implements dynamic control of packet duplication transmission by configuring RLC entities with duplication activation/deactivation capabilities. The system can dynamically adjust whether duplication is performed based on transmission conditions, allowing the network to optimize between reliability and resource efficiency in real-time
Solution Approach 2:
The patent applies different duplication strategies to different RLC entities within the same radio bearer. Each RLC entity can be independently configured with duplication parameters, allowing localized optimization where duplication is applied only where needed to balance reliability improvement with resource consumption
2Reliability
If multiple RLC entities are configured for packet duplication, then transmission reliability is improved, but device complexity increases
Solution Approach 1:
The patent segments the RLC layer into multiple independent entities (primary RLC entity and secondary RLC entities) that can be individually configured and controlled. This segmentation allows the system to manage duplication by controlling individual entities rather than managing a monolithic structure, reducing overall system complexity
Solution Approach 2:
The patent introduces a control mechanism (MAC CE or RRC signaling) that acts as an intermediary between the higher layers and RLC entities. This intermediary simplifies the management of multiple RLC entities by providing a centralized control interface for activation, deactivation, and configuration of duplication functionality
Data Source
AI summary
The disclosure relates to a method and apparatus for controlling packet duplication transmission in a wireless communication system. According to an embodiment of the disclosure, a method, performed by a user equipment (UE), of controlling packet duplication transmission in a wireless communication system includes: receiving a packet duplication configuration for a radio bearer, through a radio resource control (RRC) message, from a base station; determining whether each of a plurality of radio link control (RLC) entities is configured to be used for uplink packet duplication transmission; and performing, when packet duplication transmission is activated, packet duplication transmission by using a RLC entity set to be used for uplink packet duplication transmission.