Content Caching via URL Segmentation for Traffic Reduction
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Solution Overview
Problem
Conventional content delivering systems face inefficiencies in caching and delivering repetitive video content over telecommunications networks, leading to increased traffic and reduced network performance due to the issuance of different one-time URLs for each content delivery request, which complicates caching and management for the content caching and delivering server.
Innovation Solution
A content caching and delivering apparatus that maps first information on the position of requested content to second information, enabling efficient caching and delivery of repetitive content requests by managing this mapping for each communication terminal, thereby reducing traffic on the telecommunications network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If different one-time URLs are issued for each content delivery request, then security is improved, but caching efficiency deteriorates
Solution Approach 1:
The patent segments the URL into two parts: a stable content identification portion and a variable one-time access portion. The content identification portion remains constant for the same content, enabling efficient caching and matching, while the one-time access portion maintains security by expiring after use. This segmentation allows the system to cache content based on the stable identification while still issuing secure one-time URLs for access.
Solution Approach 2:
The patent introduces an intermediary mapping mechanism that connects the one-time URL to the stable content identification. The server maintains a mapping table that associates temporary one-time URLs with permanent content identifiers, allowing it to recognize repeated requests for the same content even when different one-time URLs are used, thereby enabling caching while maintaining security.
2Reliability
If one-time URLs are managed and linked with content identifications, then access control is improved, but system complexity increases
Solution Approach 1:
The patent divides the URL structure into distinct segments: a stable content identification portion and a variable one-time access portion. This segmentation simplifies management by allowing the system to handle the stable portion for caching and matching purposes while the variable portion handles security, reducing the overall complexity of URL management.
Solution Approach 2:
The patent performs preliminary action by pre-establishing the mapping between one-time URLs and content identifications before actual content delivery. The server maintains a mapping table that is prepared in advance, allowing for efficient lookup and matching when requests arrive, thereby reducing the complexity of real-time URL management and matching operations.
3Loss of energy
If content is cached based on one-time URLs, then traffic reduction is achieved, but caching accuracy deteriorates
Solution Approach 1:
The patent segments the URL to separate the stable content identification from the variable one-time access code. By using the stable content identification portion for caching operations, the system achieves accurate content matching and caching, while still maintaining traffic reduction benefits through the one-time URL mechanism. This segmentation resolves the contradiction between traffic reduction and caching accuracy.
Solution Approach 2:
The patent introduces the content identification as an intermediary that bridges the one-time URL and the cached content. When a request arrives with a one-time URL, the server uses the intermediary content identification to accurately match and retrieve the cached content, ensuring caching accuracy while still achieving traffic reduction through the one-time URL access control mechanism.
Data Source
AI summary
A content caching and delivering apparatus transmits and receives communication signals in between a content delivering apparatus delivering content on a telecommunications network and communication terminals. A content storage stores content delivered by the content caching and delivering apparatus. A delivery controller receives a content delivery request for the content stored in the content storage, and maps information on the position of the requested content to information on the content for each terminal and manages the mapping. The delivery controller delivers the requested content to the communication terminal.