Wireless Content Caching via Secure QUIC Proxy Tunnels
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Solution Overview
Problem
Video-on-demand systems face challenges with heavy resource allocation due to large content storage needs and bandwidth consumption when multiple UEs request the same content, leading to inefficient use of network resources.
Innovation Solution
A method involving a network function that establishes secure tunnel connections with a content delivery server and UEs, utilizing QUIC-based tunneling to redirect content delivery through proxy service nodes, optimizing bandwidth usage and reducing server overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If content is delivered directly from content server to multiple UEs, then content delivery is simple, but bandwidth consumption increases and network resources are inefficiently used
Solution Approach 1:
The patent introduces a network function (proxy service node) as an intermediary between the content server and UEs. This intermediary receives content from the content server, caches it locally, and then delivers it to multiple UEs. This resolves the contradiction by maintaining relatively simple direct delivery paths while significantly reducing bandwidth consumption through local caching and content reuse.
Solution Approach 2:
The network function performs preliminary actions by caching content before it is requested by multiple UEs. When the network function receives content from the content server, it stores it in its buffer/memory, preparing it for potential future requests. This preliminary caching action reduces the need for repeated content transmission, thereby reducing bandwidth consumption while maintaining simple delivery mechanisms.
2Loss of energy
If content is cached at network function, then bandwidth efficiency improves, but device complexity increases
Solution Approach 1:
The network function is designed to perform multiple functions: it acts as a proxy service node for content delivery, a caching mechanism for storing content, and a routing decision point for redirecting requests. By consolidating these functions into a single network element, the patent improves bandwidth efficiency while limiting the increase in overall system complexity, as the added complexity is confined to a specialized network function rather than distributed across multiple components.
3Reliability
If secure tunnel connection is established through network function, then security is improved, but connection setup time increases
Solution Approach 1:
The network function establishes secure tunnel connections with UEs in advance, before actual content delivery begins. By pre-establishing these encrypted communication channels during initial connection setup, the system ensures security is in place before any sensitive data transmission occurs, while minimizing the time penalty as the tunnel is ready when needed.
Data Source
AI summary
Arrangements for handling delivery of content associated with a network-delivered service to user equipments, UEs, in a wireless communication network. The method includes transmitting a connection request message to a content delivery server for establishing a secure tunnel connection between the network function and the content delivery server. The connection request message has an identifier of the network function, intended to the content delivery server. The method includes transmitting a content request message from a first UE to the content delivery server requesting content associated with the network-delivered service. The method includes receiving a delivery request from the content delivery server requesting the network function to store and deliver the content from the network function. The method further includes forwarding the content to the first UE through a secure tunnel connection between the network function and the first UE.