IMS Schema Version Negotiation via Intermediary Mediator
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Solution Overview
Problem
In IP Multimedia Subsystem (IMS) networks, interoperability issues arise due to compatibility problems between different versions of XML schema documents used in SIP messages, leading to unpredictable behavior and service failures during communication.
Innovation Solution
A system and method for negotiating schema and document version information in SIP messages, where entities include schema version indicators to ensure compatibility, and intermediary nodes facilitate version negotiation between upstream and downstream entities, allowing for the validation and processing of versioned message bodies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different versions of XML schema documents are used in SIP messages, then the system can support multiple schema versions and improve adaptability, but interoperability issues arise leading to unpredictable behavior and service failures
Solution Approach 1:
The patent introduces an intermediary node (such as a proxy server or gateway) that mediates communication between entities using different XML schema versions. This intermediary translates or adapts messages between different schema versions, allowing entities to communicate without direct compatibility. The intermediary maintains a mapping between different schema versions and performs necessary transformations to ensure successful communication while supporting multiple versions.
Solution Approach 2:
The patent utilizes version parameters and content-type headers to indicate different XML schema versions in SIP messages. By changing the version parameter values and associated metadata, the system can identify and handle different schema versions appropriately. This parameter-based approach allows flexible version management while maintaining clear identification and handling rules for each version.
2Reliability
If schema version indicators are included in SIP messages, then compatibility can be ensured between entities, but the message complexity and processing overhead increase
Solution Approach 1:
The patent leverages existing SIP message headers and fields (such as Content-Type, Accept, and custom headers) to carry schema version information. By using universal, already-present message structures for version indication, the patent avoids adding entirely new message elements. This multi-uses existing message components for both their original purposes and version indication, reducing overall complexity while ensuring compatibility information is conveyed.
3Adaptability or versatility
If intermediary nodes facilitate version negotiation, then seamless communication between different schema versions is achieved, but the network infrastructure complexity increases
Solution Approach 1:
The patent positions intermediary nodes as essential mediators in the communication path between entities using different XML schema versions. These intermediaries (proxies, gateways, or translation servers) maintain version mappings and perform real-time message transformation. The intermediary architecture allows transparent version negotiation without requiring direct version awareness between communicating entities, simplifying endpoint design while enabling multi-version support.
Data Source
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AI summary
In one embodiment, a scheme is disclosed for facilitating responding to a request in a network environment including IMS. A component associated with a recipient is configured to receive an incoming message from a sender, wherein the incoming message is substantially free of an indication of acceptance by the sender of a body of a particular content type. A component associated with the recipient is configured to provide an outgoing message including at least one body of the particular content type.