Frequency Management Apparatus Distributed Load Balancing
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Solution Overview
Problem
Existing frequency management systems face issues with concentrated processing load and redundant calculations when determining acceptable transmit power for secondary transmitting stations in wireless communication systems, particularly in centralized and autonomous distributed-type systems.
Innovation Solution
A frequency management apparatus and method that receives notifications of changes in frequency use state and sets acceptable transmit power for radio stations managed by other frequency management apparatuses, distributing calculation tasks and avoiding redundant processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If centralized-type frequency management is used where a single database aggregates information from all secondary transmitting stations, then coordination of transmit power is improved, but processing load concentration and system complexity increase
Solution Approach 1:
The patent divides the centralized frequency management system into multiple autonomous distributed frequency management entities, each responsible for managing a subset of secondary transmitting stations. This segmentation distributes the processing load across multiple entities rather than concentrating it in a single database, while still maintaining coordinated power control through information sharing between entities.
Solution Approach 2:
The patent introduces a new dimension of organization by grouping secondary transmitting stations into different frequency management entities based on geographical or functional criteria. This creates a hierarchical structure where local entities handle day-to-day power adjustments autonomously, while maintaining coordination through inter-entity communication, thus distributing complexity across multiple levels.
2Device complexity
If autonomous distributed-type frequency management is used where each frequency management entity independently calculates acceptable transmit power, then processing load is distributed, but redundant calculations occur across entities
Solution Approach 1:
The patent implements feedback mechanisms where frequency management entities exchange information about their calculated acceptable transmit power values and the state of secondary transmitting stations. This feedback allows entities to adjust their calculations based on information from other entities, avoiding redundant computations while maintaining autonomous operation and distributed processing load.
Solution Approach 2:
The patent combines the autonomous calculation capabilities of distributed entities with centralized information sharing. Each entity independently calculates acceptable transmit power for its managed stations, but merges this with real-time information from other entities about station states and power levels, eliminating redundant calculations through coordinated information exchange.
3Ease of operation
If frequency management entities only manage their own secondary transmitting stations, then autonomy is improved, but interference coordination with stations managed by other entities deteriorates
Solution Approach 1:
The patent introduces information exchange protocols and communication interfaces as intermediaries between autonomous frequency management entities. These intermediaries enable entities to share critical information about their managed stations' power levels and operational states, allowing interference coordination between entities while preserving the autonomy and independent operation of each frequency management entity.
Data Source
AI summary
A frequency management method and device as well as a wireless system are provided by which acceptable transmit power is efficiently determined for transmitting stations in a system on the interfering side, neither with concentration of processing load on some part nor with redundant processing. When a frequency management apparatus (50_1) receives a notice regarding a change in the state of frequency use from a radio station (20_1) under its own management (S101), the frequency management apparatus (50_1) sets acceptable transmit power for radio stations (20_1, 20_2) under its own management and radio stations (20_3, 20_4) managed by another frequency management apparatus (50_2), based on the notified change in the state of frequency (S103, S104).