Dynamic Spectrum Management for Inter-Cell Interference Reduction
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Solution Overview
Problem
Conventional static spectrum allocation in mobile communications networks is inflexible and inefficient, leading to network performance degradation due to mismatched spectrum allocation and load distribution, resulting in increased maintenance costs and interference.
Innovation Solution
A method for dynamic spectrum management that locally adjusts spectrum configuration by determining reusable spectrum levels between cell links using co-frequency indication information, allowing for real-time optimization of spectrum allocation based on current network conditions, reducing overhead and inter-cell interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional static spectrum allocation is used, then network planning and optimization are simplified, but network performance decreases due to mismatch between spectrum allocation and load distribution
Solution Approach 1:
The patent implements dynamic spectrum allocation where the spectrum management module continuously monitors network load and interference conditions, and automatically adjusts spectrum allocation in real-time. This transforms the static spectrum allocation into a dynamic system that adapts to changing network conditions, resolving the contradiction between allocation simplicity and network performance.
Solution Approach 2:
The patent establishes a feedback mechanism where the spectrum management module receives information about network load and interference from base stations, processes this information, and sends back spectrum allocation adjustments. This closed-loop feedback system enables automatic adaptation to network conditions, improving performance without requiring complex manual planning.
2Reliability
If conventional dynamic spectrum allocation is implemented to minimize overall interference, then network performance improves, but spectrum configuration overhead increases across all cells
Solution Approach 1:
The patent implements local spectrum allocation adjustments at the cell level rather than network-wide changes. The spectrum management module determines spectrum allocation for each cell based on local load and interference conditions, allowing targeted optimization without requiring complex coordination across all cells. This reduces configuration overhead while maintaining performance benefits.
Solution Approach 2:
The patent divides the network into independent cell units for spectrum management purposes. Each cell's spectrum allocation is determined and managed separately based on its specific conditions, rather than treating the entire network as a single unit. This segmentation reduces the complexity and overhead of spectrum configuration while preserving the ability to optimize network performance.
3Productivity
If spectrum allocation is frequently adjusted to match load distribution, then spectrum efficiency increases, but network operation complexity and maintenance cost increase
Solution Approach 1:
The patent implements self-service spectrum management where the spectrum management module automatically monitors network conditions and performs spectrum allocation adjustments without human intervention. The system uses pre-configured thresholds and algorithms to make autonomous decisions, eliminating the need for manual spectrum planning and reducing operation complexity while maintaining high spectrum efficiency.
Solution Approach 2:
The patent establishes pre-configured threshold values for load and interference that trigger spectrum allocation changes. These thresholds are set in advance during system configuration, allowing the network to automatically respond to conditions without requiring real-time human decision-making. This preliminary configuration simplifies operation while enabling frequent spectrum adjustments when needed.
Data Source
AI summary
Embodiments of the present invention provide a method and an apparatus for dynamic spectrum management. The method includes: determining a reusable spectrum for one of multiple cell links in a network according to co-frequency indication information, where the co-frequency indication information is used to indicate reusable levels of spectrums of other cell links for each cell link in the multiple cell links; and updating a spectrum configuration of the one of the multiple cell links by using the reusable spectrum of the one of the multiple cell links. By determining a reusable spectrum for a specific cell link according to co-frequency indication information, embodiments of the present invention can locally adjust the spectrum configuration of the specific cell link, thereby reducing a spectrum configuration overhead while increasing network capacity and reducing inter-cell interference.