Local Subscriber Information Management Device Data Retention Optimization
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Solution Overview
Problem
Conventional mobile communication systems face inefficiencies in managing subscriber information, leading to unnecessary increases in data retention capacity as the number of subscribers grows, particularly due to the low geographic mobility of devices like vending machines, which results in excessive facility build-ups and management traffic imbalances.
Innovation Solution
A mobile communication system and method where a local subscriber information management device acquires and manages subscriber information, selecting relevant data for deletion or non-retention based on acquired information after call control, preventing unnecessary data retention and extending the capacity limit without additional infrastructure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If facilities are added to the local subscriber information management device according to the substantial increase of the number of mobile terminals, then the system can support more subscribers, but terribly unreasonable excessive facilities are built with respect to actual communication traffic of data
Solution Approach 1:
The patent changes the parameter of data retention duration by introducing a management flag that distinguishes between mobile terminals with high mobility (carried by users) and low mobility (incorporated in vending machines or general-purpose equipment). This parameter change allows the system to retain subscriber information only for mobile terminals that actually move between mobile switching centers, preventing excessive facility buildup while still supporting a large number of subscribers.
Solution Approach 2:
The patent segments the subscriber information management approach by creating different retention policies for different types of mobile terminals. By segmenting based on mobility characteristics, the system avoids applying a uniform retention policy that would result in excessive data storage for all subscribers, thereby reducing unnecessary facility requirements.
2Reliability
If subscriber information is retained for all mobile terminals in the local subscriber information management device, then call control can be performed for any subscriber, but the information amount of subscriber information retained unnecessarily increases even if the number of subscribers increases
Solution Approach 1:
The patent introduces a management flag parameter that changes the retention behavior based on mobile terminal type. For mobile terminals incorporated in vending machines or general-purpose equipment (low mobility), the flag indicates that subscriber information should not be retained after call control. For mobile terminals carried by users (high mobility), the flag indicates normal retention. This parameter change maintains call control reliability while reducing information storage quantity.
Solution Approach 2:
The patent extracts and identifies mobile terminals with specific characteristics (low mobility, incorporated in equipment) and applies a different information retention policy to them. By taking out these specific cases from the general retention rule, the system reduces unnecessary information storage while preserving call control capability for all subscribers.
3Adaptability or versatility
If the local subscriber information management device reserves memory capacity corresponding to the number of mobile terminals, then all mobile terminals can be accommodated, but the probability of changing current mobile switching center is very low for vending machines and general-purpose equipment, resulting in traffic of management information rarely occurs
Solution Approach 1:
The patent changes the memory allocation parameter from a static capacity reservation based on total subscriber count to a dynamic retention policy based on mobile terminal mobility characteristics. By using the management flag to determine retention duration, the system accommodates all mobile terminals while optimizing memory usage according to actual management information traffic patterns.
Solution Approach 2:
The patent introduces dynamics into the information retention policy by making it adaptable to mobile terminal behavior patterns. The management flag enables the system to dynamically adjust retention duration based on whether the mobile terminal is likely to change mobile switching centers, thereby optimizing both accommodation capacity and management information traffic efficiency.
Data Source
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AI summary
The unnecessarily increase of the information amount of subscriber information retained by a local subscriber information management device is prevented even if the number of subscribers increases, so that the limit of the number of subscribers is extended to support the increasing number of subscribers without increasing the capacity of subscriber information retaining means in the local station (local subscriber information management device). Based on information contained in subscriber management information 211, 221 including information representing each mobile terminal 310, 320 acquired by local stations 210, 220 of a mobile communication system 100 and subscriber information corresponding to each mobile terminal 310, 320, the relevant subscriber management information 211, 221 are selected and processed to be prevented from being retained after call control is performed according to the acquired subscriber management information.