Reconfigurable Base Station Spectrum Resource Reconfiguration
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Solution Overview
Problem
The conventional spectrum fixed allocation system leads to a low utilization ratio of spectrum resources, causing a shortage, especially in International Mobile Telecom (IMT) systems, as unused resources in broadcast TV systems cannot be efficiently reused due to lack of feasible methods for reconfiguring spectrum resources in cognitive radio systems.
Innovation Solution
A radio system and method that involves a Reconfigurable Base Station (RBS) dividing subordinate nodes into groups based on attributes and sending reconfiguration commands to execute spectrum resource reconfiguration, using a reconfiguration decision module to generate and manage reconfiguration commands, including parameters like time, frequency band, and QoS, and employing separate, group, or unified sending methods for efficient reconfiguration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If spectrum fixed allocation system is used, then system stability is maintained, but spectrum resource utilization ratio deteriorates
Solution Approach 1:
The patent implements dynamic spectrum allocation by allowing secondary systems to access spectrum resources dynamically based on real-time availability and QoS requirements. The system transitions from fixed allocation to flexible, time-varying allocation where spectrum resources can be reassigned between primary and secondary systems, improving overall utilization while maintaining stability through controlled access mechanisms.
Solution Approach 2:
The patent changes the allocation parameters of spectrum resources from fixed to variable, allowing parameters such as allocation time, frequency bands, and resource blocks to be adjusted dynamically. This enables the system to adapt spectrum allocation based on traffic demands and availability, resolving the contradiction between stability and utilization efficiency.
2Productivity
If cognitive radio technology is used to dynamically allocate spectrums, then spectrum utilization efficiency is improved, but system complexity increases
Solution Approach 1:
The patent segments the spectrum resource allocation process into distinct components: spectrum sensing, resource selection, QoS evaluation, and reconfiguration execution. By dividing the complex cognitive radio functionality into modular segments, the system achieves high spectrum utilization while managing complexity through structured, independent functional blocks that can be implemented and maintained separately.
Solution Approach 2:
The patent introduces a reconfiguration decision module as an intermediary between spectrum sensing and resource allocation. This mediator processes spectrum availability information, evaluates QoS requirements, and generates reconfiguration commands, simplifying the overall system architecture by centralizing decision-making logic and reducing direct interactions between multiple complex components.
3Productivity
If secondary system uses spectrum resources of main system, then overall network performance is improved, but QoS of main system may deteriorate
Solution Approach 1:
The patent applies preliminary anti-action by implementing QoS evaluation and protection mechanisms before secondary systems access spectrum resources. The system pre-assesses the impact of secondary access on primary user QoS and only allows reconfiguration when QoS requirements are satisfied, preventing degradation before it occurs and ensuring main system performance is maintained.
Solution Approach 2:
The patent implements feedback mechanisms where the system continuously monitors QoS parameters of primary users and adjusts secondary system access accordingly. When QoS degradation is detected, the system generates reconfiguration commands to protect primary user services, creating a closed-loop control system that balances overall network performance with main system QoS guarantees.
4Reliability
If reconfiguration command is sent to all subordinate nodes, then complete reconfiguration is achieved, but signaling overhead increases
Solution Approach 1:
The patent applies local quality by sending reconfiguration commands selectively to only those subordinate nodes that require reconfiguration based on their specific spectrum usage and QoS requirements. Instead of universal reconfiguration, the system identifies and targets specific nodes with relevant commands, achieving complete necessary reconfiguration while minimizing unnecessary signaling overhead to nodes that don't require changes.
Data Source
AI summary
Disclose is a radio system and a spectrum resource reconfiguration method thereof. The method comprises: a Reconfigurable Base Station (RBS) divides subordinate nodes into groups according to attributes of the subordinate nodes, and sends a reconfiguration command to a subordinate node in a designated group, and the RBS and the subordinate node execute reconfiguration of spectrum resources according to the reconfiguration command; or, the RBS executes reconfiguration of spectrum resources according to the reconfiguration command; and a subordinate User Equipment (UE) accessing to a reconfigured RBS after interruption. By means of the present disclosure, the reconfiguration of spectrum resources of a cognitive radio system can be realized.