Splitting PoC Terminals by Media Attribute for Floor Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In push-to-talk-over-cellular (PoC) systems, the originating PoC client repeatedly transmits INVITE messages to establish multimedia sessions, and there is a lack of support for simultaneous floor control of audio and video sessions, leading to prolonged time in obtaining the floor.
Innovation Solution
A method and system for splitting PoC terminals based on media attributes, using a session management server to transmit INVITE messages specific to each terminal's media type, allowing for efficient session establishment and floor control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the PoC client repeatedly transmits INVITE messages to establish multimedia sessions, then the session establishment can be achieved, but the time to obtain the floor is prolonged
Solution Approach 1:
The patent segments the single PoC terminal into multiple media-specific terminals (audio terminal, video terminal) based on different media attributes. Each terminal handles specific media types independently, allowing parallel session establishment for different media types rather than repeated sequential INVITE transmissions, thus reducing the time to obtain the floor while maintaining reliable session establishment.
2Device complexity
If the PoC system uses a single terminal for both audio and video sessions, then the system complexity is reduced, but simultaneous floor control for multiple media types is not supported
Solution Approach 1:
The patent divides a single PoC terminal into multiple specialized terminals (audio terminal, video terminal) based on media attributes. Each terminal is optimized for specific media types and can independently control the floor for its designated media, enabling simultaneous floor control for multiple media types while keeping each individual terminal relatively simple in structure.
Solution Approach 2:
The patent assigns different qualities and capabilities to different terminals based on their media specialization. The audio terminal handles audio-specific floor control while the video terminal handles video-specific floor control, allowing each terminal to have optimized local capabilities for its designated media type, thus achieving versatile floor control without requiring a single complex terminal.
3Loss of energy
If the PoC client transmits a single INVITE message for multimedia session, then the signaling overhead is reduced, but there is a lack of support for simultaneous floor control of audio and video sessions
Solution Approach 1:
The patent segments the media session establishment into multiple independent INVITE messages, each targeted at a specific media-type terminal (audio terminal, video terminal). This allows the system to maintain lower signaling overhead per message while achieving simultaneous floor control for multiple media types, as each segmented INVITE message is optimized for its specific media type rather than attempting to handle all media types in a single complex message.
Data Source
AI summary
A method establishes a PoC multimedia session for making a PoC multimedia call according to a support attribute of a PoC terminal and sets media for each session. In the method, a message for setting a session management server to split arbitrary PoC user terminals according to an attribute of media to establish the session is transmitted from the arbitrary PoC user terminals to the session management server. An INVITE message according to the media attribute is transmitted from the session management server to each of the terminals based on the setting.