HLR Migration Tool for Subscriber Data

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Solution Overview

Problem

Existing methods for migrating subscriber data in IoT devices often result in significant provisioning downtime and data inconsistencies between Home Location Registers (HLR) and Home Subscriber Servers (HSS), making capacity management and technology upgrades challenging.

Innovation Solution

A computer-implemented method using an HLR migration tool that facilitates the migration of subscriber data by copying it from a source HLR to a target HLR while simultaneously provisioning new devices, ensuring dual provisioning and robust audit processes to maintain data consistency and minimize downtime.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If subscriber data is migrated from source HLR to target HLR using traditional methods, then capacity management and technology upgrades can be achieved, but significant provisioning downtime occurs and data inconsistencies arise between HLRs

Engineering Contradiction:
Improvecapacity managementVSAvoidprovisioning downtime
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

The patent applies preliminary action by performing an initial data synchronization from source HLR to target HLR before the migration cutover. This pre-migration sync ensures that the target HLR is prepared with up-to-date subscriber data, enabling a smoother transition and reducing provisioning downtime during the actual migration event.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent implements continuity of useful action by establishing a data synchronization mechanism that continues to operate during the migration process. The sync process runs continuously to maintain data consistency between source and target HLRs, ensuring that provisioning services remain operational without significant interruption throughout the migration.

Inventive Principle:
Principle #20Continuity of useful action

2Adaptability or versatility

If subscriber data is migrated from source HLR to target HLR, then technology upgrades can be performed, but data inconsistencies occur between HLRs during the migration process

Engineering Contradiction:
Improvetechnology upgradeVSAvoiddata inconsistency
Core Design Contradiction:
Adaptability or versatilityVSLoss of information

Solution Approach 1:

The patent applies feedback by implementing an audit mechanism that continuously monitors and verifies data consistency between source and target HLRs during migration. The audit process provides feedback on synchronization status and detects any data inconsistencies, enabling corrective actions to be taken to maintain data integrity throughout the migration process.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The continuous data synchronization mechanism ensures that data consistency is maintained throughout the migration process. By continuously syncing data from source to target HLR and verifying consistency through audits, the system prevents data inconsistencies from occurring even during active migration operations.

Inventive Principle:
Principle #20Continuity of useful action

3Productivity

If traditional HLR migration methods are used, then migration can be completed, but service disruption impacts wireless communication services

Engineering Contradiction:
Improvemigration completionVSAvoidservice disruption
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The patent reduces service disruption by performing preliminary data synchronization before migration cutover. This preparation ensures that the target HLR is ready to immediately handle subscriber data upon migration, minimizing the window of service disruption and maintaining wireless communication services throughout the migration process.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS20240323674A1Subscriber data migration with dual provisioning
Publication Date: 2024.09.26 CISCO TECHNOLOGY INC
  • US20240323674A1 patent drawing
  • US20240323674A1 patent drawing
  • US20240323674A1 patent drawing

AI summary

A method is provided comprising storing, in a first subscriber data server, subscriber data for each of a plurality of wireless devices, the subscriber data enabling wireless communication services for the plurality of wireless devices in a wireless network; determining to migrate the subscriber data from the first subscriber data server to a second subscriber data server; upon determining to migrate the subscriber data, initiating a migration process for the subscriber data from the first subscriber data server to a second subscriber data server by copying the subscriber data from the first subscriber data server to the second subscriber data server; and while copying and one or more new wireless devices are being provisioned for the wireless communication services in the wireless network, adding new subscriber data for the one or more new wireless devices to both the first subscriber data server and to the second subscriber data server.