Conditional Access Network Identification Code for Repeater Charging
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Solution Overview
Problem
Current conditional access systems for digital broadcasting do not effectively manage and charge for services in areas where the main broadcasting network and repeater network overlap, leading to inefficiencies and lack of appropriate treatment for charged services.
Innovation Solution
A digital broadcast transmission system and method that includes a main broadcasting system adding a data packet and network identification code (NIC) to broadcasting signals, scrambling them, and using a predetermined scrambling key, with a repeater system repeating these signals, and a mobile communication system providing the descrambling key to charged subscribers, allowing differentiation between main and repeater network signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a repeater station is installed to service blanket areas and boundary regions, then the coverage area is extended, but the complexity of the broadcasting network increases and charged service management becomes difficult
Solution Approach 1:
The broadcasting network is segmented into main broadcasting network and repeater network with distinct network identification codes. The repeater station is separated as an independent entity with its own NIC, allowing independent management and charging while extending coverage to blanket areas and boundary regions.
Solution Approach 2:
A network identification code (NIC) is introduced as an intermediary element to distinguish between main broadcasting signals and repeater signals. This NIC acts as a mediator that enables the receiver to identify the signal source and apply appropriate conditional access rules for charging management.
2Loss of energy
If repeater service is made charged to activate the repeating network, then the network can be maintained, but appropriate treatment for charged service has not been provided
Solution Approach 1:
The system implements feedback through the NIC that continuously identifies whether the receiver is obtaining service from the main broadcasting network or the repeater network. This feedback mechanism enables automatic application of different conditional access rules and charging policies based on the signal source, making charged service management feasible.
Solution Approach 2:
The conditional access parameters are changed based on the NIC value. When the NIC indicates a repeater network, different scrambling keys and access control parameters are applied compared to the main broadcasting network, enabling distinct charged service treatment for repeater users.
3Ease of operation
If network identification code is added to distinguish main and repeater signals, then charged service management is enabled, but the data transmission load increases
Solution Approach 1:
The network identification code serves multiple functions simultaneously: it identifies the signal source (main or repeater network), enables conditional access control, supports charging management, and facilitates receiver behavior adjustment. This multi-functionality justifies the minimal additional data load.
Solution Approach 2:
The NIC is integrated into existing broadcasting signal parameters rather than adding separate dedicated transmission channels. By modifying existing signal parameters to include NIC information, the data transmission load increase is minimized while achieving comprehensive service management capabilities.
Data Source
AI summary
Disclosed are a conditional access transmission system and method, and a receiving terminal and method. The transmission system transmits scrambled broadcasting signals including a network identification code (NIC) in the digital broadcasting service. A repeating system repeats the broadcasting signals transmitted by the transmission system to a subscriber station. In this instance, the NIC of the repeating system is different from that of a main broadcasting network. A receiving terminal descrambles the scrambled broadcasting signals by using the NIC and a descrambling key. According to the present invention, the charged subscriber can receive broadcasting signals or TPEG messages in the repeating network.