Link Failure Report Transmission in Dual Connectivity Handover
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In a dual connectivity scenario, when a link between a terminal and a secondary node (SN) fails, and the master node (MN) is handed over, a link failure report of the terminal cannot be sent to the SN, preventing parameter adjustment and leading to inefficient communication.
Innovation Solution
The terminal sends a link failure report to a second radio access network device, which forwards the report to a third radio access network device, enabling the third radio access network device to send the report to the first radio access network device, allowing it to perform parameter adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal sends the link failure report to the second radio access network device (new master node), then the report can be forwarded to the third radio access network device (old master node) and eventually to the first radio access network device (secondary node) for parameter adjustment, but the reporting path becomes more complex requiring multiple forwarding steps
Solution Approach 1:
The second radio access network device (new master node) acts as an intermediary to forward the link failure report from the terminal to the third radio access network device (old master node), which then forwards it to the first radio access network device (secondary node). This mediator approach ensures reliable report delivery while managing the complexity through defined forwarding procedures between network devices.
2Ease of manufacture
If manual setting of handover parameters is used, then initial network deployment is straightforward, but updating mobility parameters after deployment is time-consuming and costly
Solution Approach 1:
The system implements feedback mechanisms where the terminal reports link failures and the network devices exchange mobility robust optimization information. This feedback loop enables automatic optimization of handover parameters based on actual link failure data, allowing timely parameter updates without manual intervention and reducing both time and cost for parameter optimization after network deployment.
3Ease of operation
If the terminal cannot send the link failure report to the secondary node after master node handover, then the reporting procedure is simplified, but parameter adjustment cannot be performed leading to inefficient communication
Solution Approach 1:
The second radio access network device serves as an intermediary that receives the link failure report from the terminal and forwards it through the third radio access network device to the first radio access network device. This intermediary mechanism maintains a relatively simple reporting procedure from the terminal's perspective while ensuring the report reaches the secondary node for parameter adjustment, thereby preserving communication efficiency.
Data Source
AI summary
A link failure report transmission method and apparatus are provided. When a link between a terminal and a first radio access network device fails, and a master radio access network device of the first radio access network device is handed over, the terminal sends a first link failure report to a second radio access network device, so that the second radio access network device forwards the first link failure report to a third radio access network device, and the third radio access network device sends the first link failure report to the first radio access network device. In this way, the first radio access network device can perform parameter adjustment based on the first link failure report.