Dynamic Packet Duplication Control Across Wireless Network Nodes
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Solution Overview
Problem
Packet duplication in wireless communication can lead to inefficient resource allocation and decreased communication reliability.
Innovation Solution
Activating and deactivating packet duplication based on status information from network nodes, including a central unit control plane (CU-CP) node, central unit user plane (CU-UP) node, and distributed unit (DU), to optimize resource allocation and enhance communication reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If packet duplication is activated to increase reliability of data transmission, then communication reliability is improved, but resource allocation efficiency deteriorates
Solution Approach 1:
The system dynamically activates or deactivates packet duplication based on current communication conditions. The network node monitors status information and adjusts the duplication state accordingly, transitioning from static to dynamic control to resolve the contradiction between reliability and resource efficiency
Solution Approach 2:
The system changes the operational parameter of packet duplication (activated/deactivated) based on monitored status information. By adjusting this binary parameter according to communication conditions, the system achieves both high reliability when needed and efficient resource allocation when not needed
2Reliability
If packet duplication is activated to send original packets via first path and duplicated packets via second path, then data transmission reliability is improved, but system complexity increases
Solution Approach 1:
The control function for managing packet duplication is extracted and centralized in a specific network node. This node monitors status information and makes centralized decisions about activation/deactivation, simplifying the overall system architecture while maintaining reliability benefits
Solution Approach 2:
The network node performs multiple functions: it monitors status information, decides on packet duplication activation/deactivation, and sends control messages to other nodes. This multi-functionality reduces the need for separate dedicated components, thereby managing system complexity
Data Source
AI summary
Wireless communications are described. A central unit control plane (CU-CP) node of a base station may activate and/or deactivate packet duplication based on status information from self-monitoring, from a distributed unit (DU), from a wireless device, and/or from a central unit user plane (CU-UP) node. The CU-UP node and/or the DU may activate and/or deactivate packet duplication based on status information from self-monitoring, from each other, from the wireless device, and/or from the CU-CP node. The CU-UP node and/or the DU, after activating and/or deactivating packet duplication, may report the activation and/or deactivation to the CU-CP node.