SON Load Control via Timing Adjustment
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Solution Overview
Problem
The increasing load on D-SON apparatuses in mobile communication systems, particularly during base station installation and configuration updates, leads to unstable operation due to temporal concentration of load, causing performance issues and potential service disruptions.
Innovation Solution
A method to adjust the timing of instructing D-SON apparatuses to perform C-SON processes based on their load state, using an EMS to distribute the load and prevent temporal concentration, thereby stabilizing the operation of the entire SON system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the D-SON apparatus performs regular reporting and update processes (addition/change/deletion of neighboring cells) instructed by the C-SON apparatus, then the SON control function is realized, but the load on the D-SON apparatus becomes temporally concentrated during base station installation and setting changes, leading to unstable operation
Solution Approach 1:
The patent applies dynamics by making the D-SON apparatus's processing capability adjustable based on real-time load conditions. The apparatus dynamically switches between normal processing mode and load reduction mode, adapting its operational characteristics to current system conditions. This resolves the contradiction by allowing the system to maintain reliability during high-load periods through dynamic load management rather than static resource allocation
Solution Approach 2:
The patent implements periodic action through cyclic monitoring of the load state and periodic switching between operational modes. The D-SON apparatus continuously monitors its load state and periodically adjusts its processing behavior based on whether the load exceeds predetermined thresholds. This periodic adaptation prevents temporal load concentration from causing instability while maintaining normal productivity during low-load periods
2Ease of manufacture
If the server configuration is limited, then the system cost is reduced, but the load during base station installation and configuration updates cannot be handled, causing temporal load concentration
Solution Approach 1:
The patent applies parameter changes by modifying the operational parameters of the D-SON apparatus based on load conditions rather than changing the physical hardware configuration. The apparatus changes its processing parameters (such as throttling update processes or delaying non-critical operations) dynamically based on real-time load state. This allows limited server configurations to handle variable load demands by adjusting operational parameters, resolving the contradiction between cost-effective limited configuration and reliable load handling capability
Data Source
AI summary
A mobile communication system (100) in which a SON is implemented includes a load control unit (150). The load control unit (150) obtains D-SON apparatus information including at least a load state of the D-SON apparatus (190) from the D-SON apparatus (190) and also adjusts, based on the obtained D-SON apparatus information, a timing for instructing the D-SON apparatus (190) to execute the C-SON process so that a load on the D-SON apparatus is not concentrated on a time axis. In such a mobile communication system, it is possible to attempt to stabilize an operation of the entire SON even when the load on the D-SON apparatus is heavy.