Movable Base Station Control for Terminal Load Balancing
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Solution Overview
Problem
Dynamic deployment of movable base stations can lead to excessive terminal connection to one station, causing uneven distribution and reducing communication quality due to high received power, resulting in congestion and decreased quality.
Innovation Solution
A base station control system that generates and calculates deployment patterns and transmission power combinations for movable base stations to balance terminal connections across existing and movable base stations, using a control station with a generation unit, calculation unit, and selection unit to optimize deployment positions and power adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If movable base stations are deployed at centers of gravity of terminal clusters, then congestion of existing base stations is resolved, but terminals excessively connect to one movable base station causing new congestion
Solution Approach 1:
The patent changes the deployment position parameters from simple cluster centers of gravity to optimized positions calculated by an evaluation function that considers multiple factors including distance to terminals, distance to existing base stations, and transmission power requirements. This parameter optimization prevents excessive terminal connection to single movable base stations while effectively resolving congestion at existing base stations.
Solution Approach 2:
The patent implements feedback through an evaluation function that calculates deployment positions based on real-time system state including terminal locations, existing base station positions, and transmission power levels. The system evaluates multiple candidate positions and selects the optimal one that balances load distribution across all base stations, preventing excessive connection to any single movable base station.
2Area of stationary object
If transmission power of movable base station is increased, then coverage area is expanded, but terminal connection becomes unbalanced causing congestion at the movable base station
Solution Approach 1:
The patent optimizes transmission power as a variable parameter in the evaluation function rather than using fixed high power levels. The evaluation function determines appropriate transmission power for each movable base station based on its deployment position, terminal distribution, and existing base station configurations, achieving coverage expansion while maintaining balanced terminal connection distribution.
Solution Approach 2:
The patent applies different transmission power levels to different movable base stations based on their specific deployment contexts and local terminal distributions. Each movable base station's power is locally optimized rather than uniformly set, allowing coverage adaptation to local conditions while preventing excessive attraction of terminals to any single station.
3Ease of operation
If terminals autonomously connect to the base station with highest received power, then connection simplicity is maintained, but uneven distribution of terminals occurs reducing communication quality
Solution Approach 1:
The patent performs preliminary action by pre-calculating and optimizing deployment positions and transmission power levels before terminals autonomously connect. The movable base stations are positioned and configured in advance to create balanced signal strength distributions, so that when terminals autonomously connect to the highest power signal, the overall distribution remains balanced and communication quality is maintained.
Data Source
AI summary
In a base station control system, a base station control apparatus includes circuitry configured to select one combination pattern from combination patterns regarding possible combinations of one or more first base stations that are each to couple to one or more terminals among terminals coupled to at least one second base station, based on the number of first terminals and the number of second terminals. The combination patterns include candidate positions of each first base station, and include transmitted power candidates of the first base station that are at the candidate positions.