RAN QoE Measurement Status Transfer Across Mobility Events
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Solution Overview
Problem
Existing wireless communication networks face challenges in coordinating quality-of-experience (QoE) measurements across multiple radio access network (RAN) nodes during dual connectivity, mobility, RRC resume, and RRC reestablishment, leading to potential interference or loss of measurement data.
Innovation Solution
Implement coordinated handling of QoE measurements and associated radio-related measurements by transmitting status information between RAN nodes, including QoE configuration details, activation/suspension states, and measurement reporting to ensure consistent data handling during connectivity procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If QoE measurements are configured for multiple RAN nodes during dual connectivity and mobility procedures, then measurement coverage and reliability are improved, but coordination complexity and risk of data loss increase
Solution Approach 1:
The patent introduces a measurement coordination mechanism where the source RAN node acts as an intermediary to transfer QoE measurement configuration and status information to the target RAN node during handover. This intermediary approach ensures that measurement data is properly coordinated between nodes, preventing data loss while maintaining measurement reliability across multiple RAN nodes involved in dual connectivity and mobility procedures
Solution Approach 2:
The patent implements preliminary transfer of QoE measurement configuration information from the source RAN node to the target RAN node before the actual handover occurs. This preliminary action ensures that the target node is already prepared to continue measurements without interruption, reducing coordination complexity during the critical handover moment while maintaining measurement reliability
2Duration of action of stationary object
If QoE measurement status is transferred between RAN nodes, then measurement continuity is improved, but signaling overhead increases
Solution Approach 1:
The patent extracts only the essential QoE measurement status information that needs to be transferred between RAN nodes, rather than transferring complete measurement datasets. By taking out only the critical status parameters needed for continuity, the solution maintains measurement continuity while minimizing the signaling overhead associated with status transfer messages
3Reliability
If multiple RAN nodes handle QoE measurements simultaneously, then measurement robustness is improved, but data consistency becomes more difficult to maintain
Solution Approach 1:
The patent implements a feedback mechanism where the target RAN node receives and acknowledges the QoE measurement status information from the source node. This feedback loop ensures that both nodes have consistent understanding of the measurement state, preventing data inconsistency while allowing multiple RAN nodes to handle measurements robustly during dual connectivity and mobility scenarios
Data Source
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AI summary
Techniques for managing quality-of-experience (QoE) measurements by a user equipment (UE). An example method, in a first node in a radio access network (RAN), comprises transmitting (1010), to a second node in the RAN, status information for measurements associated to one or more QoE measurements configured for the UE by the first node. The second node may be associated with the first node with respect to at least one of the following: changing a configuration for the UE for dual connectivity; mobility of the UE; RRC resume or RRC reestablishment of the UE; and switching the transfer of data for the service from a path going to the UE via the first RAN node to a path going to the UE via the second RAN node.