Variable Redundancy Delivery Network for Direct Link Capacity
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Solution Overview
Problem
Providing a high-quality broadband experience in remote or mobile environments is challenging due to limited bandwidth and high costs, especially in scenarios where multiple users demand network resources simultaneously, leading to congestion and reduced quality of service.
Innovation Solution
A variable redundancy delivery network is employed, which partitions the estimated information rate between a direct communication link and a secondary rate provided through intermediate storage nodes, optimizing storage policies based on non-uniform message probability densities to enhance capacity and reliability, using a combination of low-reliability high-capacity disk storage and solid-state storage with dynamic redundancy management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If bandwidth is increased to serve multiple users simultaneously, then quality of service is improved, but cost increases
Solution Approach 1:
The patent pre-loads frequently requested content onto satellite dishes at user premises before demand occurs. This preliminary action allows the system to serve multiple users simultaneously without requiring additional bandwidth during peak demand periods, thereby maintaining quality of service while controlling costs.
Solution Approach 2:
The patent introduces an intermediary storage layer (satellite dish with local storage) between the headend and user devices. This intermediary caches content locally, reducing the bandwidth burden on the main communication link while still providing fast access to users, thus improving service quality without proportionally increasing bandwidth costs.
2Productivity
If bandwidth is increased to serve multiple users simultaneously, then network capacity is improved, but congestion is reduced
Solution Approach 1:
The patent creates local copies of frequently requested content and stores them on satellite dishes at user premises. When users request content, they receive it from the local copy rather than streaming it over the network, which maintains network capacity for other users and prevents congestion without requiring increased bandwidth.
3Reliability
If storage capacity is increased at intermediate nodes, then delivery reliability is improved, but device complexity is worsened
Solution Approach 1:
The patent combines the satellite dish with integrated storage capabilities into a single unit at user premises. This merging of functions (reception and storage) into one device provides reliable content delivery through local caching without requiring separate complex storage systems, thereby improving delivery reliability while managing device complexity.
Data Source
AI summary
Capacity enhancement of a direct communication link using a variable redundancy delivery network. An estimated information rate between a source node and a terminal node may be partitioned into a first information rate provided via the direct communication link and a second information rate to be provided via the variable redundancy delivery network. One or more parameters of the variable redundancy delivery network may be calculated to provide the second information rate based on a non-uniform probability density of messages requested by the terminal node. Capacity and reliability of storage media devices in the variable redundancy delivery network may be traded off to provide the second information rate. The variable redundancy delivery network may implement various coding schemes and per-message coding rates that may be determined based on the non-uniform probability distribution of the source message library.