Dynamic Packet Duplication Deactivation in 5G User Equipment
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Solution Overview
Problem
Current 5G communication systems face challenges in providing seamless and efficient services, particularly in IoT environments, where packet duplication and logical channel management are complex due to the need for reliable data transmission and efficient resource allocation.
Innovation Solution
The proposed method involves a user equipment (UE) receiving packet duplication and logical channel restriction configurations from a base station through RRC messages, with the ability to deactivate packet duplication and adjust logical channel configurations dynamically based on indications from the base station, allowing for optimized data transmission through packet duplication and carrier aggregation or dual connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If packet duplication is configured for a data radio bearer to enhance data transmission reliability, then the reliability of data transmission is improved, but the device complexity and resource management complexity increase
Solution Approach 1:
The patent applies dynamics by making the packet duplication configuration changeable through MAC control elements. The base station can dynamically activate or deactivate packet duplication for specific data radio bearers based on current network conditions and QoS requirements, allowing the system to adapt between high reliability modes and simpler operational modes without permanent complexity
Solution Approach 2:
The patent implements local quality by applying packet duplication selectively to specific data radio bearers rather than all bearers uniformly. Each DRB can have packet duplication enabled or disabled independently based on its specific QoS requirements, allowing fine-grained control that balances reliability improvements against complexity management
2Productivity
If logical channel restriction configuration is applied to manage packet duplication, then resource allocation efficiency is improved, but the ease of operation and configuration simplicity deteriorate
Solution Approach 1:
The patent applies self-service by enabling the UE to autonomously manage logical channel restrictions based on received configurations. The UE automatically applies the allowedServingCells parameter to determine which cells can carry data for restricted logical channels, reducing the need for complex manual configuration while maintaining efficient resource allocation through automated enforcement
3Device complexity
If packet duplication is deactivated to reduce complexity, then the device complexity and power consumption are reduced, but data transmission reliability deteriorates
Solution Approach 1:
The patent resolves this contradiction through dynamic configuration changes via MAC control elements. The base station can switch packet duplication on or off for specific DRBs based on real-time conditions, allowing the system to operate in low-complexity mode when reliability requirements are low and high-reliability mode when needed, thus balancing both complexity reduction and reliability maintenance
Data Source
AI summary
An operating method of a user equipment in a wireless communication system according to an embodiment of the present disclosure includes receiving a packet duplication configuration and a logical channel restriction configuration (allowedServingCells) for a data radio bearer (DRB) from a base station through an RRC message; receiving an indication to deactivate packet duplication for the DRB, for which packet duplication is configured, from the base station through a media access control (MAC) control element (CE); and not applying the logical channel restriction configuration for the DRB, for which packet duplication is configured, based on the indication to deactivate the packet duplication.