Transmission Leg Activation Coordination in Multi-Connectivity
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Solution Overview
Problem
In multi-connectivity scenarios, existing technologies face challenges in coordinating the activation status of transmission legs between access nodes, leading to increased latency and potential contradictory activation status information, which affects the reliability and efficiency of data packet duplication in 5G networks.
Innovation Solution
The proposed solution involves an apparatus and method where a first access node transmits messages to a second access node and a terminal device to manage the activation status of transmission legs, allowing clear decision-making responsibility and coordinating the activation status of transmission legs, ensuring unambiguous control and efficient data packet duplication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple access nodes independently coordinate activation status of transmission legs, then flexibility in transmission leg management is improved, but contradictory activation status information and increased latency occur
Solution Approach 1:
The master access node serves as an intermediary that receives activation status information from secondary access nodes and relays it to terminal devices. This mediator role ensures that all terminal devices receive consistent activation status information from a single source, preventing contradictory information while allowing multiple access nodes to independently manage their transmission legs. The master access node coordinates the overall activation status without preventing individual nodes from making flexible decisions about their own transmission legs.
Solution Approach 2:
The system segments the coordination function by dividing responsibilities between master and secondary access nodes. Secondary access nodes independently manage their own transmission legs and generate activation status information locally, while the master access node collects and distributes this information. This segmentation allows each node to operate flexibly within its domain while maintaining overall system consistency through the coordination framework.
2Ease of operation
If activation status information is transmitted between access nodes and terminal devices, then transmission leg control is improved, but latency increases
Solution Approach 1:
The master access node pre-configures terminal devices with the framework for receiving and processing activation status information. Terminal devices are prepared in advance to immediately act on activation status updates when received, minimizing processing delay. The system establishes predetermined rules and protocols for activation status transmission and response, so that when actual transmission leg activation decisions need to be made, the terminal devices can execute them without additional coordination overhead or delay.
Data Source
AI summary
There is provided a solution for performing packet duplication in a wireless network. According to an aspect, a method comprises: receiving, by a terminal device from a first access node, a first message comprising at least one information element indicating activation of at least one transmission leg of a first subset of transmission legs, hosted by the first access node, to deliver a duplicate of a data packet between the terminal device and the first access node, receiving, by the terminal device from a second access node, a second message comprising at least one information element indicating activation of at least one transmission leg of a second subset of transmission legs, hosted by the second access node, to deliver a duplicate of a data packet between the terminal device and the second access node, transmitting, by the terminal device, to the first access node at least one duplicate of the data packet over the at least one transmission leg indicated in the first message, and transmitting to the second access node at least one duplicate of the data packet over the at least one transmission leg indicated in the second message.