Dynamic Spectrum Allocation via Channel Set Classification
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Solution Overview
Problem
Current dynamic spectrum allocation methods in Cognitive Radio systems suffer from significant delays and low performance in spectrum resource reconfiguration, leading to inefficient spectrum utilization due to the need for frequent database access and channel management that does not consider factors like channel quality, idle time, geographical isolation, and transmitting parameters.
Innovation Solution
A dynamic spectrum allocation method and device that generate and manage channel sets based on available channel lists and classification information, including channel quality status, idle time, geographical isolation, and transmitting parameters, to prioritize and allocate spectra efficiently, reducing delays and improving reconfiguration performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the CCP accesses the DB and coordinates spectrum allocation every time a base station applies for spectrum resources, then spectrum allocation can be made according to real-time conditions, but the processing time increases causing delay in spectrum resource allocation
Solution Approach 1:
The patent pre-divides channels into six classification sets (not allowed to be used, operating channels, backup channels, candidate channels, protected channels, and unclassified channels) based on historical data and primary user usage patterns. This preliminary classification enables base stations to quickly identify suitable channels without real-time database queries, significantly reducing allocation delay while maintaining reliability through the structured channel management system.
2Productivity
If channel sets are not classified according to channel quality, idle time, geographical isolation, and transmitting parameters, then the channel management process is simpler, but the spectrum utilization efficiency decreases
Solution Approach 1:
The patent segments the available channel list into six distinct classification sets based on multiple dimensions including channel quality, idle time, geographical isolation, and transmitting parameters. Each set serves a specific purpose in the spectrum allocation hierarchy, allowing the system to efficiently match base station requirements with appropriate channel characteristics while maintaining organized and manageable channel categories.
Solution Approach 2:
The patent applies different selection criteria and priorities to different channel sets based on their specific characteristics. For example, operating channels are selected when available, backup channels serve as alternatives, and protected channels have restricted access. This localized quality approach optimizes spectrum utilization by matching specific channel properties with appropriate usage scenarios.
3Productivity
If the secondary system uses idle spectrum of the primary system without maintaining protection distance, then spectrum utilization increases, but the primary system may be interrupted
Solution Approach 1:
The patent dynamically adjusts the protection distance requirement based on real-time conditions including the specific channel being used, the geographical location of the base station, the transmitting power level, and the usage patterns of the primary system. This dynamic approach allows the system to maximize spectrum utilization while maintaining adequate protection for primary users, adapting the protection constraints to match current operational conditions rather than applying fixed distance requirements.
Data Source
AI summary
The present disclosure discloses a dynamic spectrum allocation method and device based on channel management. The method comprises the following steps: a network node generates a channel set according to an available channel list and channel classification information, and maintains and updates the channel set; and the network node selects a spectrum from the channel set and allocates the spectrum. The device comprises: a channel set generation module configured to generate a channel set according to an available channel list and channel classification information and maintain and update the channel set; and a spectrum allocation module configured to select a spectrum from the channel set and allocate the spectrum. The present disclosure can reduce the delay in the spectrum resource reconfiguration of a CR system, improves the overall performance of spectrum resource reconfiguration and increases the utilization efficiency of a spectrum.