PoC Floor Management for Multimedia Session Control
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Solution Overview
Problem
The existing Push-To-Talk (PTT) over Cellular (PoC) systems face limitations in providing multimedia services, particularly in opening sessions quickly and managing various media types, which hinders efficient multimedia communication.
Innovation Solution
A method for floor management in a PTT over Cellular system that allows independent session opening for multiple media types supported by clients, enabling selective media transmission based on user choice and adding new media types during sessions, with a PoC server combining and transmitting multimedia streams according to client preferences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a single PoC session is used for all media types in the conventional system, then session management is simplified, but session opening time increases and media transmission efficiency decreases
Solution Approach 1:
The patent divides a single PoC session into multiple independent media-specific sessions (voice session, video session, data session). Each session is established separately for its corresponding media type, allowing parallel establishment and reducing total session opening time. The floor management is also segmented into independent floor controls for each media type.
2Productivity
If all media types are transmitted in a PoC session, then comprehensive communication is achieved, but transmission efficiency decreases and user cost increases
Solution Approach 1:
The patent enables selective media transmission by establishing separate sessions for different media types. Users can selectively activate only the media types they need (voice, video, or data) based on their specific communication requirements. This local quality approach allows each user to receive only the relevant media streams, reducing overall transmission volume and improving efficiency.
3Adaptability or versatility
If the PoC system supports multiple media types simultaneously, then service versatility improves, but floor control complexity increases
Solution Approach 1:
The patent segments floor control into independent floor management mechanisms for each media type. A separate floor control entity manages the floor for voice, video, and data transmissions independently. This segmentation allows the system to support multiple media types simultaneously while maintaining simple, dedicated floor control for each type, avoiding the complexity of a unified multi-media floor control system.
Data Source
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AI summary
Disclosed is a method and a system for a Push-To-Talk (PTT) over Cellular (PoC) session open between PoC clients supporting various types of media. Although a PoC client providing an Open Mobile Alliance (OMA) PoC multimedia communication service supports a plurality of uncommon types of media, it is possible to open a session according to media types in an independent and easier manner. Also, when a new media type is supported by a new participant during a session, it is possible to add the new media type when granting the next floor. In addition, it is possible to selectively transmit media according to media types based on the PoC user's choice.