5G Numerology Selection Algorithm for Spectral Efficiency
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Solution Overview
Problem
Current 5G cellular communication systems face challenges in determining the optimal number of numerology structures to use between base stations and SIM card devices, leading to increased spectral inefficiency and signaling overhead due to the need for multiple numerologies, which compromises flexibility and user satisfaction.
Innovation Solution
A method is introduced to calculate a flexibility metric that determines the most suitable numerology structures by evaluating user satisfaction and adjusting numerology selection dynamically, ensuring optimal user needs are met while minimizing spectral inefficiency through a novel algorithm that iteratively selects and removes numerology structures based on user preferences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple numerology structures are used simultaneously to increase system flexibility, then user necessities are better met, but spectral efficiency decreases due to increased guard bands
Solution Approach 1:
The patent dynamically changes numerology parameters (subcarrier spacing, cyclic prefix length) based on service requirements and channel conditions. By adjusting these parameters in real-time, the system can adapt to different user needs without permanently committing to multiple fixed numerology structures, thereby reducing the need for extensive guard bands while maintaining flexibility.
Solution Approach 2:
The system transitions from static single numerology to dynamic multi-numerology selection. The base station can switch between different numerology configurations based on current traffic patterns, user demands, and channel conditions, allowing optimal balance between flexibility and spectral efficiency at any given moment.
2Adaptability or versatility
If more numerology structures are used to meet diverse user needs, then user satisfaction increases, but signaling overhead and scheduling complexity increase
Solution Approach 1:
The patent segments users into different groups based on their service requirements (e.g., enhanced mobile broadband, ultra-reliable low-latency communication, massive machine type communication). Each segment is assigned appropriate numerology configurations, simplifying the scheduling process by reducing the number of possible combinations that need to be managed while still meeting diverse user needs.
Solution Approach 2:
Different numerology configurations are applied locally to different users or user groups based on their specific requirements rather than using a uniform configuration for all. This allows the system to provide high user satisfaction for each user group while managing complexity by applying simpler configurations where appropriate and more complex ones only where necessary.
3Loss of energy
If a single numerology structure is used, then spectral efficiency is maintained, but system flexibility is insufficient
Solution Approach 1:
The patent designs a universal numerology framework where a single base station can support multiple numerology configurations through a unified resource allocation and scheduling mechanism. This multi-functional approach allows the system to maintain spectral efficiency through efficient resource management while providing the flexibility to serve diverse 5G services simultaneously.
Data Source
AI summary
According to the necessities of users under a service of one base station, the disclosed method decides how many instantaneous numerology structures should be used mostly and selects the most suitable numerologies from the existing numerology set.