MAC Signaling Priority Management for NR Packet Duplication
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Solution Overview
Problem
In New Radio (NR) communication systems, the activation/deactivation of secondary cells for carrier aggregation is not properly managed when MAC signaling for packet duplication contends with MAC signaling for SCell control, leading to potential malfunctions and inability to achieve high-speed communication with high reliability and low latency.
Innovation Solution
Defining priorities between packet duplication control and secondary cell control, allowing the communication terminal to manage packet duplication and secondary cell activation/deactivation based on these priorities, ensuring reliable and efficient communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If MAC signaling for packet duplication and MAC signaling for SCell control are transmitted simultaneously, then communication functionality is enhanced, but signal contention occurs leading to malfunctions
Solution Approach 1:
The patent assigns priorities to different MAC signaling types in advance, establishing a predetermined hierarchy where packet duplication control signaling takes precedence over SCell control signaling. This preliminary arrangement prevents contention issues during simultaneous transmission by providing clear rules for signal processing order.
2Reliability
If packet duplication control is prioritized over SCell control, then high-speed communication with high reliability is achieved, but SCell management becomes more complex
Solution Approach 1:
The priority relationship between different MAC signalings is predetermined and configured in advance through higher-layer signaling or standard specifications. This eliminates the need for complex real-time decision-making at the MAC layer, as the processing order is already established before contention occurs.
3Adaptability or versatility
If simultaneous MAC signaling for packet duplication and SCell control is managed without priorities, then signal processing flexibility is maintained, but processing time increases
Solution Approach 1:
By establishing predetermined priorities among different MAC signaling types, the system eliminates the need for complex real-time arbitration processes. The terminal can immediately determine which signal to process first based on pre-configured priority rules, significantly reducing processing time while maintaining flexibility through the priority framework.
Data Source
AI summary
A communication system includes a user apparatus; and a base station including a distributed unit (DU) configured to wirelessly communicate with the user apparatus and a central unit (CU) connected to the distributed unit. The base station including the CU and the DU supports packet duplication, and the DU notifies the user apparatus of starting the packet duplication.