Hierarchical RAN Device State Control for Energy and Interference
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Solution Overview
Problem
Conventional radio access network (RAN) devices, such as femtocells and picocells, remain powered on continuously, leading to unnecessary resource waste and interference, as they do not efficiently manage power states based on usage patterns, resulting in increased energy consumption and spectral interference.
Innovation Solution
Implementing a hierarchical class system for RAN devices, where devices can transition between states (full power, sleep, or off) based on their class and neighboring device usage, using a controller to determine and initiate state changes based on parameters like traffic load, historical data, and usage patterns, thereby reducing interference and energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RAN devices remain powered on continuously, then network coverage and service availability are maintained, but energy consumption increases and spectral interference occurs
Solution Approach 1:
The patent implements dynamic state transitions for RAN devices between full power, sleep, and off states based on real-time traffic load conditions. The controller monitors traffic patterns and automatically adjusts device states, allowing the system to adapt power consumption levels while maintaining network coverage availability when needed.
Solution Approach 2:
The system changes operational parameters by transitioning devices between different power states (full power, sleep, off) based on traffic load thresholds. This parameter change approach enables the network to optimize energy consumption while preserving service availability by maintaining devices in appropriate states according to actual demand conditions.
2Reliability
If RAN devices remain powered on continuously, then service availability is maintained, but spectral interference increases
Solution Approach 1:
The patent implements dynamic state transitions for RAN devices between full power, sleep, and off states based on real-time traffic load conditions. The controller monitors traffic patterns and automatically adjusts device states, allowing the system to reduce spectral interference by placing devices in sleep or off states when traffic demand is low, while maintaining service availability when needed.
3Use of energy by moving object
If state transitions are implemented based on hierarchical class, then energy consumption is reduced, but device complexity increases
Solution Approach 1:
The patent segments RAN devices into different hierarchical classes (first class, second class, third class) with progressively stricter state transition restrictions. This segmentation allows the system to reduce energy consumption by applying different control policies to different device groups, while managing complexity through a structured classification approach rather than individual device configuration.
Solution Approach 2:
The system changes the control parameter by introducing hierarchical class classification, where each class has predefined state transition rules. This parameter change enables automated energy optimization without requiring complex individual device management, as the hierarchical structure provides a systematic framework for controlling state transitions across the network.
4Object-generated harmful factors
If state transitions are implemented based on hierarchical class, then spectral clutter is minimized, but device complexity increases
Solution Approach 1:
The patent segments RAN devices into different hierarchical classes with progressively stricter state transition restrictions. This segmentation minimizes spectral clutter by systematically controlling which devices can transition to off or sleep states based on their class, while managing complexity through the hierarchical structure rather than individual device configuration.
Data Source
AI summary
Enabling a changing of a state of a device based on a hierarchical class of the device is disclosed. Non-macro radio access network (RAN) devices can be comprised in a network connected to a macro RAN device via a gateway RAN device. The gateway RAN device can be connected to a field RAN device via an intermediate RAN device. A state of a field RAN device can be altered based on a criterion. In an embodiment the criterion can be use of the hierarchical class of the RAN device, e.g., a field class RAN device, by an active or idle UE. In an embodiment the criterion can be use, by an active or idle UE, of another RAN device that is a logical neighbor to the field RAN device. Altering the state can result in a power savings or improved interference characteristics of the network.