Media Gateway Dynamic Quality Adjustment for MTSI-CS Interworking
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Solution Overview
Problem
Current multimedia telephone interworking systems between MTSI and CS H.324 terminals face quality issues due to instability, where the MTSI terminal cannot dynamically adjust communication quality, leading to buffer overflows and poor communication quality, as the gateway system lacks real-time quality information from the MTSI terminal.
Innovation Solution
A multimedia telephone interworking method and system that includes a Media Gateway (MGW) capable of receiving and acting upon quality information such as Temporary Maximum Media Bandwidth Request, frame rate, image resolution, packet loss ratio, or buffer information from the MTSI terminal, allowing for dynamic adjustment of communication quality, either by the MGW or by reporting this information to the Media Gateway Control Function (MGCF) for further adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the gateway system discards packets to solve quality problems, then communication quality is improved, but the MTSI terminal cannot send quality information to the gateway system and dynamic adjustment cannot be performed
Solution Approach 1:
The patent implements a feedback mechanism where the MTSI terminal sends quality information (such as buffer status, packet loss rate, jitter) to the gateway system through RTCP or other signaling protocols. The gateway system receives this feedback and dynamically adjusts communication parameters accordingly, transforming a one-way packet discarding approach into a closed-loop adaptive system that maintains quality while preserving information flow.
2Reliability
If the gateway system renegotiates codes to improve quality, then communication quality is improved, but real-time dynamic adjustment according to received quality information is not achieved
Solution Approach 1:
The patent enables dynamic adjustment of communication parameters by allowing the gateway system to modify coding rates, bandwidth allocation, and other transmission parameters in real-time based on continuously received quality information from the MTSI terminal. This transforms static code renegotiation into a dynamic adaptive process that responds immediately to changing network conditions.
3Adaptability or versatility
If the MTSI terminal sends quality information to the gateway system, then the gateway system can perform dynamic adjustment, but system complexity increases
Solution Approach 1:
The patent leverages existing multi-functional components in the gateway system (such as the RTCP module, existing quality monitoring mechanisms, and adaptive coding capabilities) to handle quality information processing. By making these existing components serve the additional function of receiving and acting on terminal-sent quality information, the patent achieves dynamic adjustment without proportionally increasing system complexity.
Data Source
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AI summary
The present invention relates to communication technologies and discloses a Media Gateway (MGW), a Media Gateway Control Function (MGCF), and a multimedia telephone interworking method and system to adjust the communication quality dynamically in the process of interworking between the Multimedia Telephony Service over IMS (MTSI) and the Circuit Switched (CS) multimedia telephony service. The multimedia telephone interworking method is applied in a scenario of interworking between the MTSI and the CS multimedia telephony service, and includes: the MGW receives quality information sent from an MTSI terminal; and the MGW adjusts communication quality dynamically according to the quality information. The present invention is applicable to multimedia telephone interworking and improves the communication quality of multimedia telephone interworking.