SIP Early Media Service Using B2BUA for Multimedia and Resource Efficiency
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Solution Overview
Problem
Conventional early media services in mobile communication are limited to audio data and inefficiently use circuit resources, with high resource waste and burdensome session switching processes, failing to meet user demands for higher quality multimedia experiences and efficient resource utilization.
Innovation Solution
A method utilizing Session Initiation Protocol (SIP) to provide early media services that include multimedia forms like images and flash animations, employing a back-to-back user agent (B2BUA) mode operation over an IP packet network, allowing for efficient circuit resource use and supporting terminals that do not support early sessions by using regular sessions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional circuit network early media service is used, then audio ring back tone can be provided, but circuit resources are extremely wasted due to exclusive circuit usage even during intermittent data transmission
Solution Approach 1:
The patent replaces the conventional circuit network with an IP packet network based on SIP protocol. This substitution eliminates the exclusive circuit allocation mechanism and enables efficient packet-based resource sharing, thereby reducing circuit resource waste while maintaining early media service functionality
Solution Approach 2:
The patent changes the fundamental transmission parameter from circuit-based connection to packet-based communication. By using SIP protocol, the system transitions from dedicated physical circuits to virtual packet switches, enabling flexible resource allocation and eliminating the waste associated with exclusive circuit usage during intermittent transmission
2Adaptability or versatility
If conventional circuit network is used for early media service, then audio data can be transmitted, but multimedia forms such as images and moving images cannot be provided
Solution Approach 1:
The patent implements a universal early media service platform using SIP protocol that can handle multiple media types (audio, image, video, animation) through a single standardized framework. The application server and media server work together to provide diverse media formats without requiring separate dedicated systems for each media type
Solution Approach 2:
The patent segments the early media service into distinct functional components: an application server that handles session management and a media server that provides actual media content. This segmentation allows independent optimization of each component and simplifies the overall system architecture while supporting multiple media types
3Ease of operation
If session switching is performed after early service to transmit media to counterpart terminal, then regular communication can be established, but the burden on mobile communication terminal becomes heavy due to terminal capacity negotiation and session handling
Solution Approach 1:
The patent merges the early media service session with the regular communication session into a unified SIP session. By combining these previously separate sessions, the system eliminates redundant capacity negotiations and session handling operations, thereby reducing terminal burden while maintaining efficient resource utilization throughout the entire communication process
Data Source
AI summary
Disclosed is a method of providing an early media service based on a session initiation protocol (SIP). More particularly, the present disclosure relates to a method of providing an early media service based on SIP, wherein an application server and a media server can provide early media of a multimedia form, such as images, moving images and the like, as well as audios, by using an early session or a regular session.