Method and node for finding content in a content distribution network, and method for creating a virtual representation of a content distribution network
US8665757B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 3, 2009 |
| Grant date | Mar 4, 2014 |
| Priority date | — |
| Expiry date | Aug 23, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L65/612
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Embodiments of the present invention a method and a node for finding the shortest path to a cache node in a content delivery network (CDN) comprising requested content and a method for creating a virtual representation of a network. According to an embodiment of the present invention, the virtual representation is in the form of a virtual, hierarchical topology, and the cache nodes correspond to the cache nodes of the real network. All cache nodes are arranged at a first level and with the virtual nodes arranged at higher levels. In the virtual representation, all nodes (cache and virtual) are connected with virtual links such that there exist only one path between any two arbitrary cache nodes. Further, costs to the virtual links are assigned such that the path cost between any two arbitrary cache nodes in the virtual representation generally corresponds to the lowest path cost between corresponding cache nodes in the real network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.