Terminal MCG SCG Failure Reporting for Network Optimization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In dual connectivity scenarios, failure events on Master Cell Groups (MCG) or Secondary Cell Groups (SCG) in mobile communication networks often go unreported, hindering network optimization and reducing mobility robustness and user experience.
Innovation Solution
A terminal detects failure events on both MCG and SCG sides and triggers a Radio Resource Control (RRC) connection re-establishment, reporting MCG and SCG failure information to the network side using available Signalling Radio Bearers (SRBs) or MAC Control Elements (CEs), ensuring that this information is used for network optimization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RRC connection re-establishment is directly triggered on MCG side, then connection recovery is achieved, but MCG failure information cannot be reported
Solution Approach 1:
The terminal stores MCG failure information in advance before triggering RRC connection re-establishment. This preliminary action ensures that the failure information is preserved and can be reported after re-establishment, resolving the contradiction between immediate connection recovery and information preservation
Solution Approach 2:
The patent introduces an intermediary mechanism where the terminal acts as a buffer between the MCG failure detection and the network. The terminal stores the failure information locally and reports it through the re-established RRC connection, mediating between the immediate connection recovery need and the information reporting requirement
2Device complexity
If SCG side is not configured with SRB, then device complexity is reduced, but MCG failure information cannot be reported
Solution Approach 1:
The patent makes the SCG serve multiple functions: it not only provides data transmission but also acts as a reporting path for MCG failure information. By configuring SCG with SRB specifically for failure information reporting, the system achieves multi-functionality without significantly increasing overall complexity
Solution Approach 2:
The SCG with SRB configuration acts as an intermediary channel dedicated to failure information reporting. This separate reporting path allows MCG failure information to be transmitted through the SCG without requiring the SCG to handle all signaling, thus maintaining relatively low complexity while enabling information reporting
3Productivity
If failure information is not reported, then network optimization efficiency is reduced, but device operation is simplified
Solution Approach 1:
The terminal automatically detects, stores, and reports failure information without requiring complex external coordination. This self-service mechanism enables network optimization by providing failure information while keeping the device operation relatively simple through automated processes
Solution Approach 2:
The patent implements a feedback mechanism where failure information flows from the terminal back to the network. This feedback loop enables network optimization by providing the necessary failure data, while the automated nature of the feedback process keeps the device complexity manageable
Data Source
AI summary
An information reporting method and device, and a terminal are provided. The method comprises: after detecting that a failure event occurs in a master cell group (MCG) or a failure event occurs in a secondary cell group (SCG), a terminal reports MCG failure information or SCG failure information to a network side, the MCG failure information or SCG failure information being used for network optimization by the network side, wherein the MCG is a cell group of master nodes, and the SCG is a cell group of secondary nodes.