Multicast-Unicast Proxy for Cellular Content Delivery
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Solution Overview
Problem
Current network architectures face challenges in implementing efficient multicast services over cellular networks without increasing infrastructure overhead or taxing processing capabilities, requiring custom clients and applications.
Innovation Solution
A communication system that seamlessly combines multicast and unicast mechanisms, using a content player to segment content into clips and determine transmission based on user requests and bandwidth utilization, allowing standard browser interfaces and eliminating the need for custom clients through a proxy that coordinates multicast and unicast operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multicast services are implemented over cellular networks using custom clients and applications, then content delivery efficiency is improved, but device complexity and adoption difficulty increase
Solution Approach 1:
The patent enables multicast functionality to work through standard web browsers and existing mobile devices without requiring custom clients. The system uses universal protocols (HTTP, WebSocket) that are already implemented in mainstream devices, allowing multicast to function on smartphones, tablets, and feature phones alike, thereby eliminating the need for specialized software installations.
Solution Approach 2:
The patent introduces a server-side intermediary system that handles the complex multicast coordination and client-side simplicity is maintained. The intermediary manages group management, bandwidth monitoring, and transmission scheduling, shielding end users from complexity while enabling efficient content delivery through standard web interfaces.
2Loss of energy
If multicast infrastructure is deployed separately or on dedicated spectrum, then spectral efficiency is improved, but infrastructure complexity and deployment difficulty increase
Solution Approach 1:
The patent merges multicast and unicast transmission mechanisms into a unified system that operates over existing cellular network infrastructure. Rather than requiring separate dedicated spectrum or infrastructure, the system combines both transmission modes to share the same network resources, achieving spectral efficiency improvements without proportionally increasing infrastructure complexity.
Solution Approach 2:
The system dynamically adjusts transmission modes based on real-time network conditions and content popularity. The server monitors bandwidth utilization and automatically selects between multicast and unicast for each content item, optimizing spectral efficiency without requiring static dedicated infrastructure. This dynamic adaptation allows flexible use of existing network resources.
3Ease of manufacture
If multicast is implemented without coordinating with existing unicast systems, then implementation simplicity is improved, but system performance and bandwidth utilization deteriorate
Solution Approach 1:
The patent implements feedback mechanisms where the server continuously monitors network bandwidth utilization and content request patterns. This feedback information is used to dynamically adjust multicast group formations and transmission scheduling, optimizing bandwidth utilization while maintaining implementation simplicity through automated decision-making rather than complex manual coordination.
Solution Approach 2:
The system performs preliminary analysis of content popularity and network conditions before initiating transmissions. By pre-determining which content items are suitable for multicast based on historical data and current metrics, the system avoids unnecessary coordination overhead during actual transmission, maintaining simplicity while improving bandwidth efficiency through proactive optimization.
Data Source
AI summary
An apparatus is provided in one example embodiment and includes a content player that receives a request for content from an endpoint and evaluates whether a given portion of the content has already been multicasted. If the portion has been multicasted, then the endpoint is connected to a multicast version of the portion of the content, and if the portion has not been previously multicasted then the portion of content is added to a multicast transmission schedule. In more specific embodiments, the content player requests a piece of content from a content source and segments the piece of content into clips to be delivered to one or more endpoints. In still other embodiments, if the portion has not been previously multicasted then the portion of content is sent over a unicast channel.