P2P Video Distribution Overlay Network Bandwidth Management
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Solution Overview
Problem
Video on demand (VOD) distribution systems face bandwidth challenges when popular content is simultaneously requested by multiple viewers, leading to delays due to centralized distribution overload.
Innovation Solution
Implementing a peer-to-peer (P2P) content distribution method that uses a network index to identify and connect viewers with desired VOD content in proximity, allowing them to share content directly and alleviate bandwidth strain through pre-seeding and license key management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If centralized distribution is used to deliver VOD content, then content delivery control and licensing management are simplified, but bandwidth capacity becomes insufficient when multiple viewers concurrently request popular content
Solution Approach 1:
The patent segments the centralized distribution function into multiple distributed peer nodes. Instead of one central server handling all content delivery, the system divides content distribution across many viewer devices that each hold and share copies of content. This segmentation increases total bandwidth capacity while maintaining control through the overlay network structure.
Solution Approach 2:
The patent introduces an overlay network as an intermediary layer between content sources and viewers. This virtual network mediates content delivery by routing requests through multiple hops between peer nodes, enabling distributed content sharing while maintaining centralized licensing and billing control through the overlay management structure.
2Reliability
If centralized distribution handles all content delivery, then licensing and billing control is maintained, but delivery delays increase due to single-point bottlenecks
Solution Approach 1:
The patent segments the content delivery path into multiple parallel routes through the peer network. Instead of all content flowing through a single central server, delivery is divided across multiple peer-to-peer connections, reducing bottlenecks and delivery delays while maintaining licensing control through the overlay network's authentication mechanisms.
Solution Approach 2:
The patent implements preliminary action by having peer nodes pre-fetch and cache popular content in advance of actual viewer requests. This proactive content positioning reduces delivery delays when viewers request content, as the material is already distributed to relevant peer nodes in the network before demand occurs.
3Productivity
If peer-to-peer distribution is implemented to increase bandwidth capacity, then delivery speed improves, but system complexity and coordination overhead increase
Solution Approach 1:
The patent uses the overlay network as an intermediary management layer that handles the complexity of peer-to-peer coordination. This virtual network structure provides standardized interfaces for content requests, routing, and authentication, simplifying the coordination overhead while enabling high-speed direct peer-to-peer content transfer underneath.
Solution Approach 2:
The patent implements multi-functionality by designing peer nodes that simultaneously perform multiple roles: content consumer, content distributor, routing participant, and licensing verification. This universal node design reduces overall system complexity by eliminating dedicated specialized components, as each peer handles diverse functions within the distributed architecture.
4Quantity of substance
If content is pre-seeded to popular peer nodes to reduce bandwidth strain, then centralized bandwidth usage decreases, but content distribution management becomes more complex
Solution Approach 1:
The patent implements feedback mechanisms where the overlay network continuously monitors content popularity, peer node availability, and network conditions. Based on this feedback, the system dynamically adjusts content seeding strategies, identifying which popular content should be pre-distributed to which peer nodes, thereby reducing centralized bandwidth usage while managing distribution complexity through adaptive decision-making.
Data Source
AI summary
Techniques for delivering video content are provided. A video distribution service maintains associations of viewer devices that have portions of specific items of video content. As new viewer devices, which lack the specific video content, make requests for the specific items of video content from the video distribution system, the video distribution system identifies a viewer device from which a portion of the item of video content may be acquired. Viewer devices having the requested content are identified by comparing distances between the locations of the requestor device and the other viewer devices of the plurality of viewers to a distance threshold. The first portion of a first item of video content is obtained from a source viewer device and a second portion of the first item of video content is obtained from the video distribution system. Other embodiments are disclosed.