UE QoE Reporting for Mobility Handover Robustness
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Solution Overview
Problem
Existing wireless communication systems lack a mechanism for the access stratum of a user equipment (UE) to consider quality of experience (QoE) variables for communication link optimizations and handovers, as these variables are not readable in a format compatible with the access stratum.
Innovation Solution
The UE converts QoE variables from the application layer into a format readable by the access stratum, allowing for the transmission of a multi-layer readable measurement report that includes both QoE and radio resource management (RRM) variables to the serving base station, enabling communication link adjustments or handover procedures based on these metrics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If QoE variables are measured at the application layer, then user experience quality can be assessed, but the RAN layer cannot read or utilize these variables for optimization
Solution Approach 1:
The patent introduces an intermediary conversion mechanism that translates QoE variables from application layer into RAN-readable formats. The UE converts QoE variables (e.g., application layer throughput, jitter, packet loss) into equivalent RAN metrics (e.g., RSRP, RSSI, SINR) that the RAN layer can understand and utilize for link optimization and handover decisions, thereby bridging the information gap between layers.
Solution Approach 2:
The patent adds a new dimension of information representation by creating multi-layer readable formats for QoE variables. Instead of keeping QoE data confined to the application layer, the system transforms it into formats that exist in multiple dimensional spaces - simultaneously readable by both application layer and RAN layer, enabling cross-layer utilization without losing the original QoE measurement precision.
2Adaptability or versatility
If QoE variables are converted into RAN-readable formats, then RAN can utilize them for link optimization, but the conversion process adds system complexity
Solution Approach 1:
The patent implements self-service by enabling the UE to autonomously perform the conversion of QoE variables into RAN-readable formats without requiring complex external conversion infrastructure. The UE itself generates the converted metrics based on its local measurements and knowledge of the radio conditions, simplifying the overall system architecture while maintaining full QoE utilization capability in the RAN.
Solution Approach 2:
The patent utilizes parameter changes by transforming QoE variables through mathematical relationships that link application layer metrics to physical layer metrics. By changing the representation parameters of QoE data (from abstract application metrics to concrete radio metrics), the system enables RAN utilization without requiring fundamentally new measurement mechanisms, thereby controlling complexity.
3Productivity
If measurement reports include both QoE variables and RRM variables, then comprehensive link optimization is achieved, but the report size and processing overhead increase
Solution Approach 1:
The patent merges QoE variables and RRM variables into a unified measurement report structure that the RAN can process simultaneously. By combining previously separate reporting streams into a single integrated report, the system achieves comprehensive link optimization using both QoE and RRM data while reducing the overhead associated with multiple separate reporting mechanisms. The merged report leverages the fact that converted QoE variables correlate with RRM metrics, allowing the RAN to process them together efficiently.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A communication link between the UE and a serving base station may be established. The UE may measure, at an application layer of the UE, a set of quality of experience variables associated with different service types. The UE may measure, at an access stratum of the UE, a set of radio resource management variables associated with the communication link between the UE and the serving base station and a communication link between the UE and a corresponding set of one or more neighboring base stations associated with the communication links. The UE may transmit a measurement report to the serving base station indicating information associated with the quality of experience variables and the radio resource management variables in a multi-layer readable format.