5G Network Overload Management via Traffic Offload
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Solution Overview
Problem
5G wireless networks face congestion issues due to limited resources at network node devices, leading to overloading and poor user experience, as a large number of user equipment (UE) devices connect, exhausting physical downlink control channel resources and resulting in connection rejections and throughput degradation.
Innovation Solution
A traffic offload management system that identifies overloaded network node devices and redistributes traffic to neighboring nodes with available capacity, using coordinated parameter changes to optimize resource utilization and reduce congestion by selecting suitable network nodes based on predicted performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a large number of UE devices connect to a network node device, then network capacity and user coverage are improved, but resource exhaustion and congestion occur leading to connection rejections
Solution Approach 1:
The patent introduces a central controller as an intermediary that manages resource allocation across multiple network node devices. The central controller receives connection requests, evaluates available resources at different nodes, and directs UEs to appropriate nodes, preventing any single node from becoming overloaded while maintaining high connection success rates.
Solution Approach 2:
The system dynamically adjusts traffic distribution parameters based on real-time resource availability at network nodes. The central controller continuously monitors resource usage and modifies connection routing decisions to balance load across nodes, ensuring optimal resource utilization and preventing congestion as UE density changes.
2Productivity
If traffic is concentrated at a single network node device, then resource utilization efficiency is improved, but congestion and overload conditions worsen
Solution Approach 1:
The patent segments the network into multiple node devices under central control, dividing the total traffic load across several independent nodes. Each node handles a portion of the UE connections, preventing any single node from becoming a bottleneck while maintaining efficient resource utilization through coordinated management.
Solution Approach 2:
The system applies local quality by tailoring resource allocation and traffic routing decisions to the specific capacity and current load conditions of each network node. The central controller assigns different traffic distribution parameters to different nodes based on their individual characteristics, optimizing overall network performance while preventing localized congestion.
3Reliability
If connection threshold is set low to prevent overload, then network stability is improved, but connection rejections increase reducing user experience
Solution Approach 1:
The central controller provides universal management functionality across all network nodes, coordinating traffic distribution to maintain stability thresholds while maximizing overall connection acceptance. By managing resources at the network level rather than individual node level, the system achieves both stability and high connection rates simultaneously.
Data Source
AI summary
A system that can detect a congested network node device that is overloaded due to number of user equipment (UE) devices connected to the network node device being determined to have exceeded a connection threshold; determine a second network node device that is available to establish connections with at least some of the UEs connected to the congested network node device; identify a third network node device that is transferring UE devices to the congested network node device to create additional connections; and transmit a cell individual offset (CIO) parameter and cell hysteresis offsets to the third network node device to reduce transferring UE devices to the congested network node device, and another CIO parameter and cell hysteresis offsets to the second network node device to increase establishment of the UE connection from the congested network node device.