Encrypted SFN Repeater Broadcast Access Using TII and Mobile Keys
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Solution Overview
Problem
In digital broadcasting systems, the existing technologies do not provide an efficient method for activating a repeating network through a charged repeater service, especially in terrestrial and satellite systems, leading to challenges in managing and charging subscribers for services across main and repeater networks.
Innovation Solution
A system and method for transmitting encrypted broadcast signals on a single frequency network, which includes a main broadcasting system for transmitting encrypted data streams with transmitter identification information, a repeater system for amplifying and modulating signals, and a decrypting key provider for managing access through a mobile communication network, allowing charged and uncharged subscribers to receive services within specific network coverage areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a repeater service provider installs and maintains a broadcasting network in the shade region, then the service coverage is extended to boundary regions, but the cost of installing and maintaining the network increases
Solution Approach 1:
The repeater station is designed to perform multiple functions: receiving signals from the main transmitter, amplifying them, and retransmitting to extend coverage. This multi-functionality allows a single infrastructure to serve both coverage extension and cost-efficient operation purposes
Solution Approach 2:
The repeater station acts as an intermediary between the main transmitter and remote receivers in boundary regions. It receives signals from the main transmitter, processes them, and retransmits to areas with weak signal reception, thereby extending service coverage without requiring direct transmission from the main station
2Quantity of substance
If the repeater service provider charges for usage of the repeating network, then the cost of network activation is covered, but appropriate treatment for the charged service has not been provided
Solution Approach 1:
The system implements feedback mechanisms where the repeater station receives control signals and authentication information from the main transmitter, and where subscribers receive service based on their subscription status. This feedback loop enables automated charged service management without complex manual intervention
Solution Approach 2:
The repeater network is designed to operate autonomously once configured, with automatic signal reception, amplification, and retransmission. The charging mechanism is integrated into the system architecture, allowing automated service provision based on subscription status without requiring complex manual management
3Adaptability or versatility
If encrypted broadcast signals are transmitted with transmitter identification information, then subscriber access can be managed and differentiated, but the system complexity increases
Solution Approach 1:
The encryption and identification mechanisms are applied selectively to different signal components and transmitted only where needed. The transmitter identification information is embedded in specific signal portions, allowing differentiated access management without requiring complete system-wide complexity
Data Source
AI summary
Disclosed is a system for transmitting encrypted broadcast signals to different transmitters on a single frequency network (SFN) in a digital broadcasting system. The system for transmitting encrypted broadcast signals on the SFN includes: a main broadcasting system for transmitting encrypted broadcast signals including data streams and transmitter identification information (TII) through a main broadcasting network; a repeating system for amplifying encrypted broadcast signals of the main broadcasting network and transmitting the amplified broadcast signals, or modulating and amplifying streams input by the main broadcasting system through a private line and repeating broadcast signals of the main broadcasting system through a repeating network; and a decrypting key provider for receiving a decrypting key value from the main broadcasting or repeating system and transmitting a user authentication and decrypting key to a charged subscriber terminal through a mobile communication network.