Voice Fallback Failure Reporting for Wrong-Cell Handover Detection
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Solution Overview
Problem
The existing signaling indication methods in network handover processes are not suitable for scenarios involving handover to a wrong cell during voice fallback services, as current Non-Access Stratum (NAS) signaling only includes too early handover and unnecessary handover, failing to address handover to a wrong cell.
Innovation Solution
A method where a terminal records relevant information upon failure during inter-system voice fallback and transmits this information to a successfully accessed network-side device, enabling network optimization by determining the failure type and optimizing parameters to avoid handover to a wrong cell.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current NAS signaling is used for handover indication, then the signaling structure remains simple, but it cannot identify handover to wrong cell scenarios under voice fallback
Solution Approach 1:
The patent segments the handover failure detection into different reporting mechanisms: terminal reports to target network-side device, which then reports to source network-side device. This segmentation allows detailed failure information collection without requiring complex direct terminal-to-source signaling.
Solution Approach 2:
The target network-side device acts as an intermediary that receives failure information from the terminal and forwards it to the source network-side device. This intermediary approach simplifies the overall signaling structure while enabling comprehensive failure detection.
2Reliability
If the terminal records and transmits failure information to the successfully accessed network-side device, then network optimization capability is improved, but information transmission overhead increases
Solution Approach 1:
The patent extracts only the essential failure information (failure type, target cell ID, source cell ID) from the complete terminal logs and transmits only these key parameters to the network-side device for optimization, reducing information overhead while maintaining optimization capability.
Solution Approach 2:
The terminal automatically records and transmits failure information without requiring network-side intervention or complex configuration, enabling self-service optimization where the network leverages terminal-generated data for parameter optimization.
Data Source
AI summary
This application provides information processing method and apparatus for voice fallback, a terminal and a network-side device. The method includes: recording, by the terminal, first relevant information of a failure in a case that the terminal accesses a first target network-side device and the failure occurs, where the first target network-side device is a network device that the terminal requests access due to inter-system voice fallback; and transmitting, by the terminal, the first relevant information to a second target network-side device, where the second target network-side device is a network device that the terminal successfully accesses after the failure occurs to access to the first target network-side device.