Session Processing for Wireless Video and Cluster Terminals
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Solution Overview
Problem
Current wireless video conference systems cannot establish a session between an Access Terminal (AT) supporting wireless video and a common cluster terminal due to the inability of cluster terminals to analyze video streams and the mismatch in network positioning.
Innovation Solution
A session processing method and system that involves sending a cluster user participation command from the AT to the conference control centre, which invites the cluster terminal through a PTT Dispatch Server, and establishes a link for session interaction by splitting multimedia data into video and audio streams and forwarding them appropriately between the AT and the cluster terminal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the cluster terminal uses traditional cluster system architecture, then the system structure is simple, but the AT supporting wireless video cannot establish a session with the cluster terminal
Solution Approach 1:
The patent introduces the PTT Dispatch Server (PDS) as an intermediary component that bridges the AT supporting wireless video and the cluster terminal. The PDS receives cluster user participation commands from the AT, sends invitations to cluster terminals, and manages the session establishment process, thereby enabling session communication between previously incompatible systems without requiring direct integration between the AT and cluster terminal
Solution Approach 2:
The patent makes the conference control centre universal by enabling it to handle both traditional wireless video conference functions and cluster terminal integration functions. The conference control centre can now process cluster user participation commands, send invitations to cluster terminals through the PDS, and manage sessions involving both ATs and cluster terminals, thus expanding its functionality to accommodate diverse terminal types
2Adaptability or versatility
If the cluster terminal cannot analyze video streams, then the terminal structure is simple, but the session between AT and cluster terminal cannot be realized
Solution Approach 1:
The patent segments the data processing function by separating video stream analysis from audio stream processing. The conference control centre is responsible for receiving multimedia data, splitting it into video and audio streams, and forwarding audio streams to the PDS. The PDS then forwards audio streams to cluster terminals, which only need to process audio data, not the entire video stream, thereby reducing the processing burden on cluster terminals while enabling session interaction
3Adaptability or versatility
If the AT and cluster terminal are not positioned in the same network, then the network structure is flexible, but direct session establishment is not possible
Solution Approach 1:
The patent uses the PTT Dispatch Server (PDS) as a mediator that operates independently of the network positioning between AT and cluster terminal. The PDS receives commands from the AT, sends invitations to cluster terminals regardless of their network location, and manages the session establishment process, thereby simplifying the ease of operation for session establishment while maintaining network structure flexibility
Solution Approach 2:
The patent implements preliminary action by having the conference control centre send invitations to cluster terminals before the actual session begins. The cluster terminal responds with an ACK response to confirm participation, and only after this preliminary setup does the session interaction commence. This preliminary invitation and confirmation process simplifies the overall session establishment process by preparing all necessary parameters in advance
Data Source
AI summary
The disclosure discloses a session processing method, which includes: a wireless Access Terminal (AT) supporting wireless video sends a cluster user participation command to a conference control center, wherein the command includes an identifier of a cluster user which is invited to participate in a video conference; the conference control center sends an invitation to a cluster terminal corresponding to the identifier of the cluster user through a Push To Talk Dispatch Server (PDS); the cluster terminal which receives the invitation returns an Acknowledgement (ACK) response to the PDS when the cluster terminal agrees to participate in the video conference and establishes a link with the PDS; and session interaction between the AT and the cluster terminal is performed based on the link. The disclosure also discloses a session processing system. By adopting the method and the system according to the disclosure, a session between an AT supporting wireless video and a common cluster terminal in a wireless video conference system is realized.