QoE Measurement Handover Across NR and LTE Without Protocol Changes
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Solution Overview
Problem
Existing QoE measurement protocols face challenges in maintaining continuity and efficiency during handovers between NR and LTE base stations, requiring modifications to LTE base station protocols to support multiple QoE measurement tasks, increasing implementation complexity.
Innovation Solution
A method that allows QoE measurement tasks configured by an NR base station to continue seamlessly on an LTE base station by selecting and indicating target QoE measurement tasks that comply with LTE protocols, reducing the need for protocol modifications and optimizing handover efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the LTE base station protocol is modified to support multiple QoE measurement tasks, then QoE measurement continuity during handover is improved, but device complexity and implementation difficulty increase
Solution Approach 1:
The patent segments QoE measurement tasks by associating each task with a unique task identifier (QoE-Task-ID). During handover, the source base station identifies which specific tasks can be continued on the target base station and transfers only those task identifiers, rather than requiring the target base station to handle all possible tasks. This segmentation allows protocol compatibility while maintaining measurement continuity for supported tasks.
Solution Approach 2:
The patent introduces an intermediary mechanism where the source base station acts as a mediator during handover. It identifies compatible tasks, selects appropriate target tasks, and transfers task identification information to the target base station. This intermediary role eliminates the need for complex protocol modifications at the target base station while ensuring seamless task continuation.
2Reliability
If all QoE measurement tasks are transferred during handover, then measurement continuity is improved, but information exchange overhead increases
Solution Approach 1:
The patent extracts only the essential task identification information (QoE-Task-ID) needed for continuity during handover, rather than transferring complete task configuration data. The source base station identifies which tasks can be continued and transfers only their identifiers to the target base station, significantly reducing information exchange overhead while maintaining measurement continuity.
Solution Approach 2:
The patent applies partial action by transferring only the subset of QoE measurement tasks that can be continued on the target base station, rather than attempting to transfer all tasks. This selective approach reduces information exchange overhead while ensuring continuity for compatible tasks, avoiding the overhead of transferring and then discarding incompatible task information.
3Adaptability or versatility
If the LTE base station supports multiple simultaneous QoE measurement tasks, then adaptability during handover is improved, but device complexity increases
Solution Approach 1:
The patent applies local quality by allowing different base stations to have different QoE measurement task handling capabilities. The source base station identifies which tasks are compatible with the target base station's capabilities and transfers only those tasks. This approach provides adaptability during handover without requiring the target base station to have complex multi-task capabilities, as each base station operates within its capability boundaries.
Data Source
AI summary
This application discloses a quality of experience measurement method, a communication apparatus, and a communication device. A first radio access network RAN device sends a handover request for a user equipment UE to a second RAN device, where the first RAN device configures a quality of experience QoE measurement task for the UE; the first RAN device receives a handover acknowledgment message from the second RAN device in response to the handover request; and the first RAN device sends an access handover instruction to the UE, where the access handover instruction is used by the UE to determine a target QoE measurement task in the QoE measurement task, and the target QoE measurement task is a QoE measurement task that the UE keeps executing after accessing the second RAN device. The method of this application improve efficiency of the QoE measurement task.