Variable Bit-Rate Codec Controller for IP Network Multimedia Quality
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Solution Overview
Problem
In mobile communication networks, existing codec mode control methods fail to provide high-quality multimedia services due to the lack of consideration for wireless channel quality and packet transfer performance in convergence IP networks.
Innovation Solution
A method and terminal for controlling codec mode in a convergence IP network, utilizing a variable bit-rate/mode codec controller with a channel status measurement and management unit to measure wireless channel quality and packet transfer performance, and a service quality control unit to determine the codec mode based on this information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If codec mode control is performed based on wireless channel quality only, then channel adaptation is improved, but packet transfer performance is not considered leading to poor QoS
Solution Approach 1:
The patent merges channel quality measurement and packet transfer performance measurement into a unified codec mode control mechanism. The channel status measurement unit measures wireless channel quality while the packet measurement unit simultaneously monitors packet transfer performance, and both measurements are integrated by the service quality control unit to determine codec mode, thereby resolving the contradiction between channel adaptation and packet transfer consideration.
Solution Approach 2:
The service quality control unit performs multiple functions: it receives channel quality information from the channel status measurement unit, packet measurement parameters from the packet measurement unit, measures overall service quality, and determines codec mode. This multi-functional approach integrates multiple measurement aspects into a single control decision mechanism, improving reliability without proportionally increasing complexity.
2Reliability
If existing codec mode control methods are used, then implementation is simple, but quality of multimedia services is poor due to lack of packet transfer consideration
Solution Approach 1:
The patent segments the codec mode control function into distinct units: channel status measurement unit for wireless channel quality, packet measurement unit for packet transfer performance, service quality control unit for integration and decision-making, and variable bit-rate/mode codec controller for final codec mode determination. This segmentation allows each unit to perform its specific function independently while working together to improve overall service quality.
Solution Approach 2:
The patent implements feedback mechanisms where the packet measurement unit continuously monitors packet transfer performance and feeds this information back to the service quality control unit. Similarly, channel quality measurements are continuously fed back. This feedback loop enables dynamic adaptation of codec mode based on actual packet transfer conditions, significantly improving multimedia service quality compared to static control methods.
Data Source
AI summary
A method of controlling the codec mode of a convergence internet protocol (IP) network and a terminal using the method are provided. The terminal may include a variable bit-rate/mode codec controller including a channel status measurement and management (CSMM) unit which measures the status of a wireless channel and provides the results of the measuring of the wireless channel status as channel quality information, and which measures the transfer performance of a received packet and provides the results of the measuring of the packet transfer performance as packet measurement parameter information, and a service quality control (SQC) unit which measures the quality of a multimedia service based on the channel quality information and the packet measurement parameter information, provides the results of the measuring of the multimedia service quality as service quality information and determines a codec mode of the terminal or a counterpart terminal communicating with the all-IP terminal based on the service quality information. Therefore, it is possible to improve the quality of multimedia services.