IMS Session Control with Separated Media Flow Across Devices
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Solution Overview
Problem
Current IP Multimedia Subsystem (IMS) session systems tie media flow and session control signaling to the same device, limiting user convenience by not allowing media flow to be sent to or controlled by a different device, and restricting the use of both mobile and stationary devices concurrently.
Innovation Solution
Implementing a system that separates session control from media flow, enabling media to be transferred between devices while maintaining session control on one device, allowing for multi-media sessions with media flows directed to different devices and session control signaling directed to one device or another.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If media flow and session control signaling are tied to the same device, then device simplicity is maintained, but user convenience and device versatility deteriorate
Solution Approach 1:
The patent segments the traditional unified session control and media flow into separate controllable entities. Session control signaling and media flow can be independently directed to different devices, allowing a user to control a session on one device (e.g., mobile phone) while receiving media on another device (e.g., computer or television), thereby improving ease of operation without overly complicating the system architecture
Solution Approach 2:
The patent introduces an intermediary mechanism (the network and session control function) that mediates between the control device and media receiving device. This intermediary enables the decoupling of control and media flow by routing them through different paths while maintaining session coherence, resolving the contradiction between user convenience and system complexity
2Adaptability or versatility
If media flow is transferred to another device, then device versatility is improved, but session control management becomes more complex
Solution Approach 1:
The patent applies segmentation by separating media flow transfer from session control transfer. When media is transferred to another device, the session control can remain on the original device or be independently managed, allowing versatile media routing without requiring complex joint management of both control and media, thus improving device versatility while controlling session control management complexity
Solution Approach 2:
The patent enables dynamic configuration where session control and media flow can be independently routed to different devices based on user needs. This dynamic flexibility allows the system to adapt to various scenarios (e.g., hands-free calling, multi-device collaboration) without requiring a fixed complex management structure, balancing versatility with manageable complexity
3Adaptability or versatility
If session control is separated from media flow, then device versatility is improved, but system architecture complexity increases
Solution Approach 1:
The patent implements a universal session control architecture that can handle both traditional (control and media on same device) and advanced (control and media on different devices) scenarios through the same framework. This multi-functionality allows the system to support diverse device configurations without requiring separate architecture designs, improving versatility while avoiding excessive architecture complexity
Solution Approach 2:
The patent uses an intermediary session control function that mediates between control device and media device, providing a standardized interface and routing mechanism. This intermediary layer simplifies the overall architecture by centralizing the complexity of managing separated control and media flows, allowing device versatility to improve without proportionally increasing system architecture complexity
Data Source
AI summary
A method and system for remote session control of IP Multimedia Subsystem (IMS) sessions, wherein media is established using one or more devices, and multi-media session/session control for multi-media session is provided by a device which may or may not be the same as the device on which the media is established. A method and system is also provided to transfer media from one device to one or more devices retaining multi-media session/session control on a transferring device.