Multimedia Call Control via Embedded Protocol Parameters
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Solution Overview
Problem
Current multimedia call setup procedures, particularly for video telephony in 3G networks, are lengthy due to the need for multiple protocol negotiations, which delays the establishment of video calls and reduces user satisfaction.
Innovation Solution
Introducing predefined information elements into the data stream during the bearer connection setup to synchronize and adjust application protocol parameters directly, bypassing the conventional application protocol negotiation phase by transmitting these elements through the data stream after the creation of the data transmission channel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional application protocol negotiation (H.245) is performed for multimedia call setup, then reliable parameter agreement is achieved, but call setup time increases significantly
Solution Approach 1:
The patent applies preliminary action by embedding application protocol parameters directly into the data stream during the bearer connection setup phase, before the conventional H.245 negotiation begins. This allows the receiving end to pre-configure protocol parameters based on received information elements, significantly reducing or eliminating the need for lengthy end-to-end negotiation while maintaining reliable parameter agreement.
2Adaptability or versatility
If multiple protocol negotiations are performed during call setup, then comprehensive parameter configuration is achieved, but the number of negotiation steps increases call setup time
Solution Approach 1:
The patent merges the bearer connection setup process with application protocol parameter configuration by embedding protocol parameters within the data stream transmitted during connection establishment. This consolidation eliminates separate negotiation phases, allowing comprehensive parameter configuration to occur simultaneously with connection setup, thereby improving call establishment speed without sacrificing configuration completeness.
3Reliability
If standard end-to-end H.245 negotiation is performed, then protocol parameter compatibility is ensured, but data transmission delay increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring application protocol parameters during the bearer connection setup phase, before actual data transmission begins. By embedding these parameters in the initial data stream and allowing the receiving end to pre-configure its protocol stack, the system ensures protocol compatibility is established in advance, eliminating delays that would otherwise occur during end-to-end H.245 negotiation and reducing data transmission delay.
Data Source
AI summary
A method of controlling an establishment of a multimedia call between at least two communication equipments, a corresponding system, and a corresponding communication equipment comprise a set up of a bearer connection resulting in a creation of a data transmission channel between at least two communication equipments.A data stream is transmitted between the at least two communication equipments after the creation of the data transmission channel for maintaining synchronization of the data transmission channel. Predefined information elements are introduced in the data stream, wherein the predefined information elements indicate local protocol settings for the multimedia call. The predefined information elements are recognized from the data stream, and parameters of an application protocol used for the multimedia call are adjusted on the basis of the predefined information elements.