Satellite Content Receiver Preloading to Balance Bandwidth and Security
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Solution Overview
Problem
Satellite-based streaming media content delivery faces challenges with bandwidth utilization and content security, as high demand can overwhelm bandwidth and preloading content risks unauthorized access.
Innovation Solution
A content protection system that uses a satellite content receiver to receive a first portion of streaming media content via multicast communication, store it, and request a second portion via unicast communication to reconstruct and output the content, while ensuring security through incomplete preloading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If content is preloaded on client-side devices, then bandwidth utilization is improved during high demand, but content security deteriorates due to risk of unauthorized access
Solution Approach 1:
The content is divided into a first portion (majority, 95-99%) and a second portion (minority, 1-5%). The first portion is preloaded via multicast to improve bandwidth efficiency, while the second portion is requested via unicast only when needed. This segmentation allows the system to benefit from both preloading for performance and selective delivery for security.
Solution Approach 2:
Instead of preloading the complete content, the system preloads only the first portion (partial action). The second portion is requested on-demand through unicast communication. This partial preloading provides sufficient content for most use cases while maintaining security by keeping sensitive or unauthorized-access-prone content on the server.
2Reliability
If complete content is preloaded to ensure availability, then service reliability is improved, but security risks increase due to unauthorized access
Solution Approach 1:
The content is segmented into a first portion (majority) and a second portion (minority). The first portion is preloaded to ensure availability for most use cases, while the second portion remains on the server and is only accessed via authenticated unicast requests, thereby reducing unauthorized access risks.
Solution Approach 2:
The system introduces an intermediary authentication mechanism between the client and the second portion of content. Before accessing the second portion, the client must go through a security verification process (unicast communication with authentication), which acts as a mediator to prevent unauthorized access while still allowing legitimate users to access the complete content.
Data Source
AI summary
A content protection system for satellite-based content delivery is provided, including a satellite content receiver. The satellite content receiver may include one or more processors and a non-transitory processor readable medium, and be in communication with a satellite antenna. The satellite content receiver may receive a first portion of streaming media content, transmitted by a content security host system using multicast communication. The first portion of the streaming media content may be stored, and later accessed in response to a user command. A second portion of the streaming media content including data missing from the first portion of the streaming media content may be identified. The second portion may be requested from the content security host system and received by the satellite content receiver. The first and second portions of the streaming media content may be combined to reconstruct the streaming media content, which may then be output.