Mobility Management Node RAN Congestion Status Handling
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Solution Overview
Problem
Current cellular systems lack effective means to provide and update Radio Access Network (RAN) congestion status during mobility procedures and for devices connected for extended periods, leading to inadequate management of RAN congestion and performance issues.
Innovation Solution
A method and system for a mobility management node to receive, compare, and forward RAN congestion status information from communications nodes, ensuring accurate and timely updates to core network nodes during mobility procedures and when devices are connected for a predetermined time, enabling proper congestion management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RAN congestion status is provided only during Service Requests from wireless devices, then the mechanism is simple to implement, but the congestion status cannot be updated during mobility procedures or for devices connected for extended periods
Solution Approach 1:
The patent implements a feedback mechanism where the mobility management node receives RAN congestion status from the RAN node, compares it with the saved status, and forwards updated status information to core network nodes when changes are detected. This continuous feedback loop ensures accurate congestion status information is maintained throughout the device's connection period, resolving the contradiction between reliability and complexity.
Solution Approach 2:
The mobility management node saves the RAN congestion status upon initial receipt and uses this saved status as a baseline for comparison. By performing the preliminary action of saving the status early in the connection process, the system enables subsequent detection of changes without requiring continuous status provision from the RAN node, thus maintaining accuracy while managing complexity.
2Reliability
If RAN congestion status is updated continuously during mobility procedures, then accurate congestion management is achieved, but additional signaling and processing overhead is introduced
Solution Approach 1:
The system uses a feedback mechanism where the mobility management node compares the received RAN congestion status with the saved status and only forwards updated information to core network nodes when changes are detected. This selective feedback approach ensures accurate congestion management while avoiding unnecessary continuous signaling, thus resolving the contradiction between reliability and time consumption.
Solution Approach 2:
The patent implements a dynamic status management approach where the system adapts its behavior based on whether the congestion status has changed. The mobility management node dynamically decides whether to forward updated status information to core network nodes based on the comparison between received and saved statuses, optimizing the balance between accuracy and overhead.
3Reliability
If the mobility management node compares received RAN congestion status with saved status, then accurate status management is achieved, but additional processing steps are required
Solution Approach 1:
The mobility management node implements a feedback mechanism where it receives RAN congestion status, compares it with the saved status, and forwards updated information when changes are detected. This feedback loop ensures accurate status management while the comparison operation remains a simple processing step, resolving the contradiction between reliability and processing complexity.
Solution Approach 2:
The system performs the preliminary action of saving the RAN congestion status upon initial receipt. This saved status serves as a reference for subsequent comparison operations, enabling accurate status management without requiring complex continuous processing, thus resolving the contradiction between reliability and processing complexity.
Data Source
AI summary
Example embodiments presented herein are directed towards a mobility management node and a communications node, and corresponding methods therein, for the handling of a RAN congestion status. The example embodiments presented herein allow for a means of providing an accurate RAN congestion status in an efficient manner.