Broadcast Metadata Component Frequency Segmentation
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Solution Overview
Problem
Current eMBMS specifications do not provide clear transmission frequency information for each component of a service, making it difficult for user terminals to receive multiple components transmitted at different frequencies, such as Japanese and Korean voices, leading to incomplete reception of services.
Innovation Solution
A communication device and method that generate and transmit metadata containing transmission frequency information for each component of a broadcast delivery service, allowing user terminals to set appropriate reception frequencies for secure reception of individual components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If current eMBMS specifications are used to notify frequency band information, then service-level notification is achieved, but component-level frequency information is not provided, making it difficult for user terminals to receive multiple components transmitted at different frequencies
Solution Approach 1:
The notification structure is segmented into service-level information and component-level information. Each component (e.g., image, Japanese voice, English voice, Korean voice) is notified with its specific transmission frequency band separately, rather than providing only a common service-level frequency. This segmentation allows user terminals to receive multiple components transmitted at different frequencies by providing dedicated frequency information for each component.
2Adaptability or versatility
If multiple components are transmitted at different frequencies, then service diversity is improved, but user terminal reception capability is reduced due to inability to recognize frequencies of respective components
Solution Approach 1:
The system performs preliminary notification of transmission frequency bands for each component before the actual data transmission. By notifying user terminals in advance about the specific frequency bands allocated to each component (image, Japanese voice, English voice, Korean voice), terminals can pre-configure their reception settings to match the notified frequencies, ensuring they can receive all components without manual adjustment or trial-and-error.
Data Source
AI summary
Transmission frequency information in units of component, the component being a data element contained in one broadcast delivery service and allowed for independent delivery, is supplied to a user terminal to execute reception setting in units of component. A data transmission device transmits, to the user terminal, metadata recording transmission frequency information in units of component that is constituent data of a broadcast delivery service and corresponds to a data element allowed for independent delivery to the user terminal, such as units of component of image data having a particular resolution, audio data or subtitle data in a particular language, or other types of data. The user terminal corresponding to a receiving device executes a setting process for setting a reception frequency allowing reception of a component to be received based on transmission frequency information recorded in units of component in the metadata received from the data transmission device.