Venue-Cast Security Architecture Using Service and Broadcast Keys
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Solution Overview
Problem
Existing venue-cast broadcast services face challenges in efficiently and reliably billing and securing content delivery to specific users at particular venues or events, as existing methods lack effective mechanisms for restricting access and ensuring secure content transmission.
Innovation Solution
A security system is implemented that uses a venue service key associated with a subscription package and location to generate a broadcast access key, encrypting content within the broadcast/multicast network infrastructure, allowing only authorized subscriber access terminals to decrypt the content, with the option to update keys using an epoch identifier and flow identifier.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If venue-cast broadcast services are provided to deliver content to mobile subscribers at particular venues, then content delivery capability and service value are improved, but security and billing control mechanisms are insufficient
Solution Approach 1:
The patent segments the broadcast service into multiple controlled components: venue-specific service identifiers, location-based access control, and subscription package verification. Each component independently validates a aspect of authorization, creating a layered security approach that maintains both delivery capability and control reliability
Solution Approach 2:
The system performs preliminary authentication and authorization actions before content delivery. Subscribers must be pre-registered, service identifiers must be pre-configured, and location credentials must be pre-validated. This preliminary setup ensures that only authorized users can receive venue-cast content, resolving the contradiction between delivery flexibility and security control
2Reliability
If broadcast content is encrypted to restrict access to authorized subscribers, then security is improved, but system complexity increases
Solution Approach 1:
The patent introduces intermediary components including a service gateway, authentication server, and location verification system that mediate between the broadcast content and receivers. These intermediaries handle the complex encryption and decryption operations, shielding end users from complexity while maintaining strong content protection through standardized interfaces
Solution Approach 2:
The system uses parameter-based access control where encryption keys and service identifiers are dynamically changed based on venue, time, and subscription level. Rather than complex cryptographic protocols, the system manages security through parameter validation (service IDs, location codes, subscription packages), simplifying the overall system while maintaining reliable content protection
3Measurement precision
If venue-specific service identifiers and location information are used to target content, then service precision is improved, but billing and access control mechanisms become more complex
Solution Approach 1:
The patent creates a universal billing and access control framework that handles multiple functions through a single integrated system. The same service identifier that targets content delivery also serves as the billing reference and authorization token. This multi-functional approach maintains high service targeting precision while avoiding the need for separate complex billing and access control systems
Data Source
AI summary
A security system is applied to venue-cast content transmissions over a broadcast/multicast network infrastructure. The broadcast network infrastructure may be Evolution-Data Only Broadcast Multicast Services (BCMCS) that facilitates distribution of a subscription-based content delivery service. A venue-cast service can be part of the subscription-based content delivery service and has an associated service key. Upon subscribing to the content delivery service, the subscriber access terminal is given the service key. Such service key may be associated with a particular subscriber package and/or venue location. The same service key is provided to the broadcast network infrastructure that broadcasts venue-cast content. A broadcast access key is generated by the broadcast network infrastructure and used to encrypt venue-specific content to be broadcasted. Consequently, only access terminals that have received the service key (e.g., subscribe to the associated subscription package and/or are located at a specific venue or location) can decrypt the broadcasted content.