Selective Media Stream Transfer via Application Server

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Solution Overview

Problem

Existing multimedia session call transfer methods lack customization and cannot meet user requirements for diversified multimedia services, as they transfer all media streams instead of allowing specific media streams to be transferred.

Innovation Solution

A method where an Application Server (AS) instructs User Equipment (UE) to establish specific media streams of a multimedia session, allowing users to request and control the transfer of specific media types between UEs, enabling targeted media stream transfer.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If all media streams are transferred during call transfer, then the transfer process is simple, but the service lacks customization and cannot meet diversified user requirements

Engineering Contradiction:
Improveservice customizationVSAvoidmedia transfer process complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent segments the media stream transfer process by allowing selective transfer of individual media streams (voice, video, data) rather than transferring all media streams together. The AS receives transfer requests that specify particular media stream types, enabling users to customize which media streams are transferred to the target UE while keeping the overall transfer framework relatively simple.

Inventive Principle:
Principle #1Segmentation

2Adaptability or versatility

If specific media streams are transferred, then user requirements for diversified services are met, but the transfer process becomes more complex

Engineering Contradiction:
Improvemedia stream selectionVSAvoidtransfer control mechanism
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The Application Server (AS) acts as an intermediary that manages the complexity of selective media stream transfer. The AS receives transfer requests from UEs, processes the selection of specific media streams, and coordinates the establishment of media streams between the source and target UEs. This centralizes the complex control logic in the AS, keeping the UE implementations relatively simple while enabling fine-grained media stream selection.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS8402154B2Method, application server and user equipment for transferring media streams of multimedia session
Publication Date: 2013.03.19 HUAWEI TECH CO LTD
  • US8402154B2 patent drawing
  • US8402154B2 patent drawing
  • US8402154B2 patent drawing

AI summary

A method, Application Server (AS) and User Equipment (UE) for transferring media streams of a multimedia session are provided. A first UE sends a request for transferring media streams of a multimedia session to an AS, where the request carries the ID of a third UE and the media type of media streams requested to be transferred; and the third UE establishes media streams of the media type with a second UE under the control of the AS.