Video Telephony Profile Exchange for Reduced Initiation Delay
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Solution Overview
Problem
The current video telephony service methods in mobile communication networks experience significant delays due to complex negotiation processes, which hinder immediate communication path establishment after call setup.
Innovation Solution
The method involves mobile communication terminals storing profile information, including voice codec, video codec, and logical channel details, to simplify the negotiation process by pre-storing and exchanging this information using H.245 protocol, allowing for immediate video telephony initiation without prolonged delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex negotiation process using H.245 protocol is performed to establish line connection and allocation, then compatibility and reliability of video telephony service are improved, but video telephony initiation time is significantly increased
Solution Approach 1:
The patent applies preliminary action by pre-storing profile information including codec capabilities and terminal characteristics in the mobile communication terminals before the actual video telephony call. This allows the negotiation process to be significantly shortened during the actual call setup, as the terminals already have the necessary information ready for quick exchange and decision-making, thus reducing initiation time while maintaining service reliability
Solution Approach 2:
The patent extracts the time-consuming negotiation process from the critical call setup path by performing it in parallel or after call establishment. The profile information exchange and line connection allocation are separated into a distinct phase that does not block the initial call setup, allowing the system to maintain reliability through complete negotiation while reducing the perceived initiation time for users
2Manufacturing precision
If a detailed line connection and allocation process is performed between calling and called terminals, then communication quality is improved, but communication path establishment time is increased
Solution Approach 1:
Terminal characteristics and profile information are pre-stored in both calling and called terminals before the video telephony call. During the call setup, this information is quickly exchanged and used to pre-determine suitable line connection and allocation parameters, enabling fast communication path establishment while ensuring high communication quality through informed decision-making
Solution Approach 2:
The patent implements a simplified negotiation path that skips unnecessary back-and-forth signaling by using the pre-stored profile information. The system rushes through the essential negotiation steps by directly applying pre-determined parameters from the exchanged profile information, thereby establishing the communication path quickly without compromising the detailed allocation needed for quality
Data Source
AI summary
The video telephony service method includes the step of the mobile communication system, which stores profile information, setting up a call between culling and called mobile communication terminals; the step of the mobile communication system transmitting the profile information of the calling mobile communication terminal to the called mobile communication terminal, as the calling mobile communication terminal transmits the profile information thereof to the mobile communication system; the step of the called mobile communication terminal consulting the profile information, and transmitting a response signal to the mobile communication system after establishing conditions for video telephony if it is determined that video telephony is possible for a received profile, and the mobile communication system transmitting the response signal to the calling mobile communication terminal; and the step of the mobile communication system establishing a communication path between the calling and called mobile communication terminals.