Access Node Activation Control for Ultra-Dense Radio Networks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In ultra-dense radio access networks, the high density of base stations leads to increased inter-cell interference and power consumption, making it challenging to optimize energy efficiency and spectral efficiency simultaneously, especially when using millimeter wave frequencies.
Innovation Solution
A centralized processor dynamically controls the activation and deactivation of access nodes based on channel state information and cooperative transmission constraints, optimizing the set of active nodes to improve energy efficiency by adjusting connections and managing RF chains.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the density of base stations is increased to accommodate mobile traffic and improve spectral efficiency, then the spectral efficiency and received signal strength are improved, but the power consumption and inter-cell interference increase
Solution Approach 1:
The patent implements dynamic activation and deactivation of access nodes based on real-time traffic conditions and channel states. The centralized processor continuously monitors system conditions and adjusts the set of active access nodes accordingly, transitioning from static to dynamic operation to optimize the balance between spectral efficiency and power consumption in ultra-dense networks
Solution Approach 2:
The system changes operational parameters by adjusting the number and configuration of active access nodes based on traffic demand and channel conditions. The centralized processor modifies system parameters dynamically, changing the active set of access nodes to optimize the trade-off between maintaining high spectral efficiency and reducing overall power consumption in the ultra-dense network
2Productivity
If more access nodes are activated to improve spectral efficiency through cooperative transmission, then the spectral efficiency increases, but the power consumption increases
Solution Approach 1:
The patent applies partial action by activating only the necessary subset of access nodes required to achieve the desired spectral efficiency threshold, rather than activating all available nodes. The centralized processor determines the minimum adequate set of active nodes based on current traffic conditions and channel states, avoiding unnecessary power consumption from excess active nodes while maintaining sufficient cooperative transmission capability
3Use of energy by moving object
If access nodes are deactivated to reduce power consumption, then the power consumption decreases, but the spectral efficiency and service quality may deteriorate
Solution Approach 1:
The system implements feedback mechanisms where the centralized processor continuously monitors traffic conditions, channel states, and performance metrics of active access nodes. Based on this feedback, the system dynamically adjusts the set of active nodes to maintain spectral efficiency above acceptable thresholds while minimizing power consumption, ensuring service quality is preserved during energy optimization
Data Source
AI summary
An operation method of a CP may include: collecting, from terminals or ANs, information on AN(s) to which each of the terminals is connectable, and determining a set of active AN(s) based on the information; adjusting connections between active AN(s) and the terminals based on cooperative transmission constraints; calculating first energy efficiency according to the active AN(s), and calculating second energy efficiency in a state in which at least one AN of active AN(s) is deactivated or activated; and maintaining the set of active AN(s) when second energy efficiency is not improved over first energy efficiency, and updating the set of active AN(s) by excluding or further including the at least one AN when second energy efficiency is improved over first energy efficiency, and performing iteratively from the calculating first energy efficiency and second energy efficiency.