The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 04, 2014
Filed:
Jun. 03, 2009
Lars-örjan Kling, Södertälje, SE;
Kjell Nyström, Tråangsund, SE;
Thomas Johansson, Haninge, SE;
Stefan Hellkvist, Stockholm, SE;
Hareesh Puthalath, Stockholm, SE;
Lars-Örjan Kling, Södertälje, SE;
Kjell Nyström, Tråangsund, SE;
Thomas Johansson, Haninge, SE;
Stefan Hellkvist, Stockholm, SE;
Hareesh Puthalath, Stockholm, SE;
Telefonaktiebolaget LM Ericsson (Publ), Stockholm, SE;
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.