Dias-dynamic IMPU Assignment Service for IMS Gateway Identity Management
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Solution Overview
Problem
The existing solutions for providing multimedia services to non-IMS enabled communication devices in private networks are inflexible, requiring manual management of specific public identities for each device, leading to administrative burdens and increased subscriptions in the IMS network.
Innovation Solution
A multimedia gateway system that allocates a pool of predefined public identities, either temporary or personal, to devices in a private network, allowing the gateway to establish multimedia sessions on behalf of these devices without the need for individual identity management within the IMS network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual management of specific public identities for each device is implemented, then devices can access multimedia services in the IMS network, but administrative burden and the number of subscriptions in the IMS network increase
Solution Approach 1:
The patent merges multiple device identities into a single group identity. Instead of each device having its own public identity in the IMS network, multiple devices share a common group identity, reducing the number of subscriptions and administrative overhead while maintaining access to multimedia services.
Solution Approach 2:
The group identity serves multiple functions: it acts as the public identity for all devices in the group, enables multimedia service access for multiple devices, and reduces the subscription count in the IMS network. This universal identity resolves the contradiction by providing versatile access while simplifying management.
2Measurement precision
If individual public identities are assigned to each device, then device identity management is precise, but the number of subscriptions in the IMS network increases
Solution Approach 1:
Multiple individual device identities are merged into a single group identity that is subscribed to the IMS network. This consolidation reduces the quantity of subscriptions while maintaining precise identity management through the group identity mechanism.
Solution Approach 2:
The group identity acts as a representative copy that stands in for multiple devices. Instead of each device having its own subscription, the group identity subscription serves as a collective representation, reducing the total number of subscriptions while maintaining identity precision.
3Measurement precision
If each device has its own public identity, then device identification is accurate, but user privacy is reduced
Solution Approach 1:
The group identity acts as an intermediary between the devices and the external IMS network. It provides accurate identification for service management while hiding the true individual device identities, thus preserving user privacy. The intermediary mechanism resolves the contradiction by decoupling identification accuracy from privacy exposure.
Data Source
AI summary
A method and arrangement in a multimedia gateway connected to a multimedia service network, for providing access to multimedia services for communication devices connected to a private network. In the multimedia gateway, a communication unit receives a request from a device in the private network for a public identity associated with the multimedia gateway. An identity manager then selects and allocates an associated public identity from a pool of public identities associated with the multimedia gateway which have been predefined as valid in the multimedia service network. The communication unit then registers the device by activating the allocated associated public identity in the multimedia service network. Thereby, the multimedia gateway can establish a multimedia session on behalf of the device, using the allocated associated public identity.