Session Binding via Identity Correspondence in Converged Networks
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Solution Overview
Problem
In converged next-generation networks, there is a challenge in efficiently managing and binding multiple sessions across different access technologies and services, particularly in allocating a common policy control entity for user equipment (UE) sessions, due to the lack of a unique identification parameter that can correlate between application and user/media plane sessions.
Innovation Solution
A method is introduced to establish a binding between separate sessions by storing and retrieving identities at different levels, using a correspondence between first and second identities to bind sessions, allowing a common parameter to be used across levels, thereby eliminating the need for additional parameters and enabling efficient policy and charging control management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate sessions are managed in converged networks, then session handling capability is improved, but device complexity increases due to lack of common identification parameters
Solution Approach 1:
The patent introduces a correspondence relationship as an intermediary mechanism between different identification parameters (first identity at application level and second identity at user plane level). This correspondence acts as a mediator that enables binding sessions across different planes without requiring a single universal identification parameter, thus resolving the complexity issue while maintaining session handling capability.
Solution Approach 2:
The patent transitions from a single-dimensional identification approach to a multi-dimensional approach by establishing correspondences between different identity dimensions (application level and user plane level). This dimensional expansion allows sessions to be bound across different planes by leveraging the relational structure between identifiers rather than requiring a common identifier.
2Adaptability or versatility
If multiple identification parameters are used for different sessions, then session differentiation is improved, but parameter management complexity increases
Solution Approach 1:
The correspondence relationship serves as a management intermediary that automates the association between different identification parameters. Instead of manually managing multiple independent parameters, the system uses the correspondence structure to automatically link first identities (application level) with second identities (user plane level), thereby reducing parameter management complexity while preserving session differentiation capabilities.
3Device complexity
If a common parameter is used across all sessions, then device complexity is reduced, but session binding capability deteriorates
Solution Approach 1:
The patent segments the identification system into distinct first identities (application level) and second identities (user plane level), each serving specific purposes. The correspondence relationship provides the binding mechanism between these segments. This segmentation allows each identifier to be simple and purpose-specific while the correspondence structure enables comprehensive session binding across different planes.
Data Source
AI summary
The present invention relates to networks, in particular to communication networks. Moreover, the present invention relates to a method, to network devices, to a computer program product and to a computer-readable medium for establishing a binding for separate sessions. According to an exemplary embodiment of the present invention there is provided a method for establishing a binding between a plurality of separate sessions, the method comprises storing a first identity of a first level, storing a second identity of a second level, providing a correspondence between the first identity and the second identity, extracting the second identity from a first message, retrieving the stored first identity on the basis of the extracted second identity and establishing a binding between a first session of the first level and a second session of the second level on the basis of the retrieved first identity.