Dynamic NB-IoT Carrier Power Adjustment for Macro eNodeB Load Management
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Solution Overview
Problem
Modern telecommunications systems face challenges in efficiently managing the routing of Narrow Band Internet of Things (NB-IoT) devices within mobile communication networks, particularly in balancing the load between Macro eNodeB and NB-IoT Only eNodeB nodes to prevent overloading and ensure seamless data transfer without disrupting LTE communications.
Innovation Solution
The implementation of an IoT Radio Access Node Management System (IRMS) that monitors loading conditions and dynamically adjusts the power levels of NB-IoT carrier signals to offload NB-IoT devices from overloaded Macro eNodeB nodes to nearby NB-IoT Only eNodeB nodes, ensuring efficient data transfers and maintaining network stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If NB-IoT devices are routed through Macro eNodeB nodes, then LTE communication coverage is maintained, but network loading increases and may cause overloading
Solution Approach 1:
The patent segments the NB-IoT device routing by introducing dedicated NB-IoT Only eNodeB nodes that handle exclusively NB-IoT traffic, separating it from Macro eNodeB nodes that handle LTE traffic. This segmentation prevents NB-IoT devices from overloading Macro eNodeB nodes while maintaining LTE communication coverage through the original Macro eNodeB infrastructure.
Solution Approach 2:
The patent introduces NB-IoT Only eNodeB nodes as intermediary elements that mediate between NB-IoT devices and the core network. These intermediary nodes relieve the loading pressure on Macro eNodeB nodes by handling NB-IoT device connections, thereby preventing overloading while maintaining overall network functionality.
2Productivity
If NB-IoT devices are offloaded to NB-IoT Only eNodeB nodes, then Macro eNodeB loading is reduced, but additional network infrastructure is required
Solution Approach 1:
The patent makes Macro eNodeB nodes multi-functional by enabling them to support both traditional LTE carriers and NB-IoT carriers simultaneously. This universality allows the existing Macro eNodeB infrastructure to serve dual purposes, reducing the need for completely separate infrastructure while still achieving load reduction through dynamic carrier adjustment.
Solution Approach 2:
The patent dynamically adjusts the NB-IoT carrier power parameter on Macro eNodeB nodes based on loading conditions. When loading exceeds thresholds, the system reduces or shuts down the NB-IoT carrier on Macro eNodeB, automatically offloading devices to NB-IoT Only eNodeB nodes. This parameter change mechanism enables flexible load management without permanent infrastructure changes.
3Reliability
If NB-IoT carrier power is increased on Macro eNodeB, then device connection is improved, but network loading increases
Solution Approach 1:
The patent implements a feedback mechanism that continuously monitors the loading condition of Macro eNodeB nodes and dynamically adjusts the NB-IoT carrier power accordingly. When loading exceeds predefined thresholds, the system provides feedback to reduce or shut down the NB-IoT carrier, automatically offloading devices. This closed-loop feedback ensures connection quality is maintained when loading is acceptable while preventing overloading.
Solution Approach 2:
The patent makes the NB-IoT carrier configuration dynamic by enabling real-time adjustment of carrier power and activation status based on current network conditions. The system can dynamically switch between different operating states (full power, reduced power, shutdown) and can dynamically trigger device offloading to NB-IoT Only eNodeB nodes, creating a flexible system that adapts to changing loading conditions.
Data Source
AI summary
Aspects of the subject disclosure may include, for example, identifying, by a processing system including a processor, a first radio access node of a mobile communication network that is overloaded according to information associated with a plurality of narrow band wireless devices connected to the first radio access node, identifying, by the processing system, a second radio access node of the mobile communication network responsive to determining that the first radio access node is overloaded, and commanding, by the processing system, the second radio access node to increase output power to cause a first narrow band wireless device of the plurality of narrow band wireless devices to transition from connection with the first radio access node to connection with the second radio access node. Other embodiments are disclosed.