QoE Measurement Parameter Transfer During Handover
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Solution Overview
Problem
Current Quality of Experience (QoE) measurement collection in wireless communication networks faces challenges in continuing measurements during terminal relocation or inter-RAT handover, as relevant parameters are not smoothly transferred from the source to the target network node, disrupting the continuity of QoE measurement management.
Innovation Solution
The proposed solution involves transferring QoE Measurement parameters from the source network node to the target network node during relocation or handover, with feedback on whether the measurement will be continued or terminated, allowing seamless continuation of QoE measurement management by updating the Measurement Initiating node.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If QoE measurement parameters are not transferred during relocation or handover, then the network operation is simpler, but the QoE measurement continuity is disrupted
Solution Approach 1:
The source network node transfers QoE measurement parameters to the target network node before the actual relocation or handover occurs. This preliminary transfer ensures that the target node is already prepared with the necessary measurement configuration data, allowing seamless continuation of QoE measurements without disruption during the handover process.
Solution Approach 2:
The source network node acts as an intermediary by receiving QoE measurement parameters from the measurement initiating node and forwarding them to the target network node. This intermediary role ensures that measurement continuity is maintained during relocation while distributing the complexity across multiple nodes rather than concentrating it in one location.
2Reliability
If QoE measurement parameters are transferred from source to target network node, then measurement continuity is maintained, but information transfer complexity increases
Solution Approach 1:
Only the essential QoE measurement parameters needed for continuity are extracted and transferred from the source network node to the target network node, rather than transferring all possible information. This selective extraction minimizes the information transfer overhead while ensuring measurement continuity is maintained.
Solution Approach 2:
The QoE measurement parameters are adapted and transformed to fit the target network node's context during the transfer process. This parameter transformation ensures compatibility and continuity while optimizing the information transfer by only including necessary modified parameters rather than raw copies of all original data.
3Measurement precision
If feedback on measurement continuation is implemented, then measurement management accuracy is improved, but communication overhead increases
Solution Approach 1:
The target network node sends feedback to the source network node indicating whether it will continue or terminate the QoE measurement. This feedback mechanism improves measurement management accuracy by ensuring that only nodes capable of supporting the measurement continue it, while minimizing communication overhead by using concise feedback messages rather than extensive negotiation protocols.
Data Source
AI summary
Quality of Experience (QoE) Measurement collection is continued from a source network node (200) providing service to a terminal (210) to a target network node (200) following a SRNS relocation or inter-RAT handover of the terminal (210). When the source network node (200) is preparing for the transfer of a terminal (210) for which a QoE Measurement is configured, QoE Measurement parameters, which have been received by the source network node (200) from a first Measurement Initiating node (200), are sent from the source network node (200) to the target network node (200). The target network node (200) provides information about the handling of the ongoing QoE measurement to the source network node (200), e.g., whether the QoE measurement is to be continued or terminated. The source network node (200) updates to the first Measurement Initiating node (200) whether the target network node (200) will continue the QoE Measurement. If the target network node (200) has a QoE Measurement configured by a second, different Measurement Initiating node (200), it may continue the QoE Measurement under that configuration, and send to the source network node (200) some or all related QoE Measurement parameters.