Subscriber Data Synchronization Across Home Location Registers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional communication systems experience delays in obtaining subscriber data during handovers between networks, leading to potential dropped calls and subscriber dissatisfaction, especially when subscriber policies change frequently, and existing systems lack the ability to implement network-specific policies across different networks.
Innovation Solution
Storing subscriber data in multiple home location registers and synchronizing it across these networks, where one register is designated as the 'owning' register to manage updates and ensure all registers have the latest policy information, eliminating the need for visitor location registers to handle policy synchronization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If subscriber data is cached in visitor location register, then data retrieval delay is reduced, but data may not reflect current subscriber policies when policies change frequently
Solution Approach 1:
The system segments subscriber data storage across multiple home location registers (HLRs) in different networks. Each HLR stores complete subscriber data including current policies, eliminating reliance on cached data in visitor location registers. This segmentation allows any network to retrieve accurate, up-to-date subscriber data directly from the owning HLR, resolving the contradiction between fast data retrieval and data accuracy.
2Stability of the object's composition
If subscriber data is stored in only one home location register, then data consistency is maintained, but data retrieval delay occurs during handovers between networks
Solution Approach 1:
The system merges subscriber data storage capabilities across multiple home location registers in different networks. The owning HLR and partner HLR both store identical subscriber data, creating a combined distributed storage system. This allows the mobile station to retrieve data from the local partner HLR during handovers without incurring retrieval delays, while the synchronization mechanism maintains data consistency between all HLRs.
3Loss of energy
If conventional caching is used in visitor location register, then network traffic is minimized, but call reliability decreases during handovers due to dropped calls
Solution Approach 1:
The system performs preliminary action by pre-synchronizing subscriber data to the partner HLR before handover occurs. The owning HLR proactively updates the partner HLR with current subscriber data, so that when handover occurs, the visited network already has the necessary data locally available. This eliminates retrieval delays during handovers and prevents dropped calls, while the synchronization mechanism optimizes network traffic by transmitting data only when changes occur.
Data Source
AI summary
Systems and methods for provisioning and synchronizing subscriber data are provided. Subscriber data is provisioned in two home location registers, each located in a different wireless network. When the subscriber registers in one of the wireless networks, the subscriber data is obtained from the local home location register. One of the two home location registers is designated as the owning home location register. Updates of subscriber data are performed with the owning home location register, which then updates the other home location register.