Multimedia Priority Service Control via Existing Protocol Messages
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Solution Overview
Problem
The existing multimedia priority service (MPS) systems have inflexible control mechanisms, which reduce the usability of the service by requiring complex and dedicated message exchanges, leading to increased network complexity and performance impact.
Innovation Solution
The solution involves using existing protocols like Session Initiation Protocol (SIP), Diameter, Lightweight Directory Access Protocol (LDAP), Simple Object Access Protocol (SOAP), and Remote Authentication Dial-In User Service (RADIUS) to transmit requests for activating or deactivating the MPS, eliminating the need for a new control protocol and simplifying the architecture by leveraging existing message exchanges during session establishment or modification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a new dedicated control protocol is introduced for MPS service activation and deactivation, then the service control capability is improved, but the network complexity and implementation difficulty increase
Solution Approach 1:
The patent applies universality by making existing protocol messages (SIP, Diameter, LDAP, SOAP, RADIUS) perform dual functions: their original purposes plus MPS service control. For example, SIP messages are used both for session management and for conveying MPS activation/deactivation requests, eliminating the need for a dedicated control protocol and reducing network complexity while maintaining full MPS control capability
2Reliability
If complex and dedicated message exchanges are used for MPS control, then the service reliability is improved, but the performance impact and network overhead increase
Solution Approach 1:
The patent merges MPS control messages with existing session establishment and modification messages. Instead of separate dedicated message exchanges, the MPS activation/deactivation requests are combined with SIP INVITE, SIP MODIFY, or other session-related messages. This reduces network overhead and improves performance while maintaining reliability through the use of established, reliable protocol frameworks
3Ease of manufacture
If existing protocol messages are reused for MPS control, then the ease of implementation is improved, but the flexibility and precision of service control may be reduced
Solution Approach 1:
The patent segments the control information by using specific parameters and headers within existing protocol messages to carry MPS control data. For example, custom SIP headers or specific Diameter AVPs are used to encode MPS activation/deactivation requests, allowing precise control functionality while reusing the established message structures. This maintains service control flexibility through parameterized control while improving ease of implementation by leveraging existing protocol stacks
Data Source
AI summary
The invention relates to an apparatus and method for transmitting a request to control a multimedia priority service for a user from user equipment to a subscription profile repository, comprising transmitting the request from the user equipment to an intermediate node, and transmitting the request from the intermediate node to a subscription profile repository.