Mesh-Assisted Cache for ISP Traffic Offloading
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Solution Overview
Problem
Current peer-to-peer (P2P) content delivery solutions face congestion and financial conflicts with Internet Service Providers (ISPs) due to using uplink channels for content distribution, leading to restricted or blocked P2P activity, and are inefficient in neighborhoods with competing ISPs, especially for video content distribution.
Innovation Solution
Establishing a mesh-assisted cache using an out-of-band communication channel like WiFi among physically proximate nodes, which forms a distributed cache managed by an overlay network, allowing content distribution 'sideways' between routers without using ISPs' networks, thus offloading traffic and reducing congestion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If P2P delivery uses ISP uplink channels for content distribution, then content delivery capability is improved, but network congestion and financial conflict with ISP occur
Solution Approach 1:
The patent introduces a mesh network as an intermediary communication channel between P2P nodes. Instead of directly using ISP uplink channels for P2P content distribution, nodes establish wireless mesh connections to form an alternative delivery path. This intermediary mesh infrastructure absorbs the content distribution traffic, preventing direct congestion on ISP networks while maintaining P2P delivery functionality.
Solution Approach 2:
The patent transitions content delivery from the traditional ISP network dimension to a wireless mesh dimension. By establishing ad hoc wireless connections between physically proximate nodes, the system creates a new spatial dimension for content distribution that operates parallel to and independent of the ISP network infrastructure, thereby avoiding congestion on the original communication path.
2Ease of operation
If P2P delivery uses asymmetrical ISP bandwidth, then Internet access is provided, but video content distribution efficiency deteriorates
Solution Approach 1:
The patent deliberately creates a symmetrical communication channel in the mesh network to counteract the asymmetry of ISP bandwidth. While ISP connections provide asymmetrical bandwidth (higher downlink, lower uplink), the wireless mesh network establishes bidirectional peer-to-peer connections with equal capabilities in both directions, enabling efficient video content distribution that was previously hindered by uplink bandwidth constraints.
3Device complexity
If P2P delivery operates within a single ISP network, then network management is simplified, but cross-ISP collaboration and accessibility deteriorate
Solution Approach 1:
The patent segments the content delivery system into two independent layers: the access layer (ISP networks) and the delivery layer (mesh network). Each node maintains its ISP connection for general Internet access while simultaneously participating in the mesh network for content distribution. This segmentation allows different ISP domains to collaborate through the mesh layer without requiring complex inter-ISP agreements or management, as the mesh network operates as an independent coordination layer.
Data Source
AI summary
A plurality of WiFi-enabled devices that are physically proximate to one another form an ad hoc mesh network, which is associated with an overlay network, such as a content delivery network. A typical WiFi device is a WiFi router that comprises addressable data storage, together with control software operative to configure the device seamlessly into the WiFi mesh network formed by the device and one or more physically-proximate devices. The addressable data storage across multiple such devices comprises a distributed or “mesh-assisted” cache that is managed by the overly network. The WiFi mesh network thus provides bandwidth that is leveraged by the overlay network to provide distribution of content, e.g., content that has been off-loaded for delivery (by content providers) to the CDN. Other devices that may be leveraged include set-top boxes and IPTV devices.