Peer-to-Peer Content Delivery for Cable Network Core Bandwidth
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Solution Overview
Problem
Cable television networks face bottlenecks in capacity, particularly at the core, due to asymmetric bandwidth consumption and lack of ephemeral content availability, with existing technologies struggling to efficiently distribute and reconstitute content, especially for high-demand services like VOD and HD programs.
Innovation Solution
A peer-to-peer software architecture that enables content delivery and reconstitution among client devices, utilizing cyclic redundancy checks and checksum analysis to identify and retrieve uncorrupted content elements from other devices, thereby reducing the burden on the network core and providing seamless access to missed or damaged content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If content is delivered through centralized distribution nodes, then content distribution is simplified and controlled, but network capacity becomes a bottleneck and bandwidth consumption concentrates at the core
Solution Approach 1:
The patent segments the centralized content delivery function into distributed peer-to-peer delivery among client devices. Instead of all content flowing through central distribution nodes, clients act as both consumers and providers of content, dividing the delivery burden across multiple nodes in the network edge, thereby reducing core network capacity requirements while maintaining controlled delivery through software architecture
Solution Approach 2:
The patent introduces a new dimension of content delivery by enabling upstream content sharing between clients. Traditionally, content flow is unidirectional (downstream from headend to client), but this invention adds an upstream dimension where clients can share content with each other, creating a multi-directional delivery network that alleviates core bandwidth constraints
2Reliability
If high-bandwidth services like VOD and HD programs are provided, then service quality improves, but network bandwidth consumption increases and stretches infrastructure thin
Solution Approach 1:
The patent implements self-service content delivery where client devices that have cached or stored content act as sources for other clients. Instead of all high-bandwidth requests flowing through the strained core infrastructure, the network edges serve themselves by sharing content locally, reducing overall bandwidth consumption while maintaining service quality for VOD and HD programs
3Ease of operation
If content is delivered only through centralized nodes, then content availability is controlled, but ephemeral content access is limited and reconstitution capability is lacking
Solution Approach 1:
The patent applies preliminary action by having client devices cache and store content in advance before it is needed for sharing. Clients proactively download and store content locally, creating a reservoir of available content that can be quickly shared with peers without requiring real-time retrieval from centralized nodes, thereby enabling rapid access to ephemeral content while maintaining controlled availability through software management
Data Source
AI summary
Methods and apparatus for providing an alternate content delivery mechanism available to content-based network users. In one embodiment, the network comprises a cable television network, and subscribers are able to retrieve requested content from one or more other subscriber's storage medium and without going outside the cable network (or accessing the network core in any significant capacity) using a peer-to-peer (P2P) network protocol. Using this approach, bandwidth consumption is advantageously pushed out to the edge of the network from the core, also obviating content requests outside the network (e.g., to third-party servers on the Internet). Methods of operating the aforementioned P2P network, and various business paradigms relating thereto, are also disclosed.