Bearer-Specific User Plane Interruption Reporting for Secondary Cell Changes
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Solution Overview
Problem
Existing technologies in Multi-Radio Dual Connectivity (MR-DC) networks face challenges in efficiently managing user plane interruptions during changes or additions of secondary cells, leading to suboptimal network decisions and prolonged service disruptions.
Innovation Solution
Terminal devices and radio access nodes are equipped with mechanisms to report user plane interruption times specific to different data radio bearers, allowing the network to make informed decisions on bearer configurations and remapping, thereby reducing service interruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If carrier aggregation and Multi-Radio Dual Connectivity are implemented to provide more resources and higher throughput, then network capacity and user experience are improved, but user plane interruption time during cell changes increases
Solution Approach 1:
The patent implements feedback mechanisms where the terminal device measures and reports user plane interruption time to the network. The network uses this feedback information to optimize handover decisions, bearer configurations, and cell change procedures, thereby reducing interruption time while maintaining high throughput benefits of MR-DC
Solution Approach 2:
The terminal device autonomously measures user plane interruption time and generates reports without continuous network intervention. The device self-manages the measurement process for different bearer types and triggers reports based on configured thresholds, reducing network signaling overhead while providing actionable data for optimization
2Measurement precision
If detailed user plane interruption time reporting is implemented for different bearer types, then network decision accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent applies different measurement and reporting configurations for different bearer types (MCG, SCG, split bearers). The network can configure specific threshold values and reporting requirements for each bearer type based on its characteristics and service requirements, providing precise measurement where needed while reducing signaling for less critical bearers
Solution Approach 2:
The network dynamically adjusts reporting parameters including threshold values, bearer type filters, and reporting triggers based on network conditions and service requirements. This allows the system to adapt the level of measurement detail to match actual needs, reducing signaling overhead when high precision is not required
Data Source
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AI summary
This specification describes a terminal device comprising means for transmitting a message relating to a change or addition of a primary cell of a secondary cell group, the message including (i) information indicative of a first user plane interruption time experienced by the terminal device and associated with the change or addition of the primary cell, and (ii) an indication of a first data radio bearer type to which the first user plane interruption time relates. It also describes a radio access node which receives the message.