Broadcast Receiver NRT Service Signaling Mapping
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Solution Overview
Problem
Current broadcast receivers face challenges in properly receiving and processing Non-Real-Time (NRT) services due to insufficient signaling information, which hinders the ability to accurately identify and deliver NRT content to users.
Innovation Solution
A method and system for a broadcast receiver that maps signaling information to announcement information, utilizing encapsulated IP packets within a single ensemble, to configure a service guide, access FLUTE sessions, and retrieve content identifiers, enabling the receiver to process and provide NRT services effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If signaling information for NRT services is transmitted through traditional broadcast protocols, then service delivery is maintained, but the receiver cannot accurately identify and process NRT content due to insufficient signaling data
Solution Approach 1:
The patent introduces Service Map Table (SMT) as an intermediary signaling structure that bridges traditional broadcast protocols and NRT service requirements. SMT contains File Delivery Table (FDT) information that maps service identifiers to content identifiers, enabling receivers to accurately identify and process NRT content while maintaining compatibility with existing broadcast infrastructure
Solution Approach 2:
The signaling information is segmented into multiple hierarchical layers: ensemble-level Service Map Table (SMT), service-level File Delivery Table (FDT), and content-level metadata. This segmentation allows receivers to progressively acquire and process NRT service information at different granularities, ensuring complete and accurate service delivery
2Measurement precision
If multiple signaling data structures are used to provide complete NRT service information, then content identification accuracy is improved, but system complexity increases
Solution Approach 1:
The patent adds a new dimensional layer to the existing signaling structure by introducing SMT as a mapping layer between service identifiers and content identifiers. This dimensional addition enables precise content identification without fundamentally redesigning the entire signaling system, maintaining relative simplicity
3Speed
If the receiver processes signaling information in real-time during broadcast, then service acquisition speed is improved, but processing overhead and resource consumption increase
Solution Approach 1:
The Service Map Table (SMT) and File Delivery Table (FDT) signaling structures are prepared and transmitted in advance during the broadcast, allowing receivers to acquire complete service and content identification information before actual NRT content delivery. This preliminary action enables faster service acquisition without intensive real-time processing
Data Source
AI summary
A method of providing a Non-Real-Time (NRT) service includes receiving a file configuring the NRT service, first signaling information, and second signaling information in a state of being IP-packetized and contained in a single ensemble, configuring and displaying a service guide using the first signaling information acquired from the ensemble, acquiring a first content identifier of content selected from the displayed service guide, accessing a FLUTE session using the second signaling information acquired from the ensemble and acquiring a second content identifier matched with the first content identifier from the accessed FLUTE session, and receiving and storing at least one file configuring the content based on the acquired second content identifier.