Content obtaining method and user equipment and cache node

Abstract

The invention discloses a content obtaining method and user equipment and a cache node. The method comprises: the user equipment applying to a management node for target content; the user equipment respectively receiving a first explorer packet and a second explorer packet, wherein the first explorer packet and the second explorer packet are respectively sent by a first storage node and a second storage node which are determined by the management node, and the first explorer packet comprises an identifier of a fragment of the target content and a shortest distance from the fragment to the user equipment on a first path, and the second explorer packet comprises an identifier of a fragment and a shortest distance from the fragment to the user equipment on a second path; the user equipment determining a preference path according to the shortest distance from the fragment to the user equipment on the first path and the shortest distance from the fragment to the user equipment on the second path; and the user equipment sending a second obtaining request used for obtaining the fragment along the preference path. Through the above method, the forwarding times the fragment in the network can be reduced, the consumption of the network bandwidth can be reduced, and the access delay of the user equipment can be reduced.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a method for acquiring content, user equipment, and a cache node. Background technique [0002] With the continuous development of the scale and technology of the Internet, the Internet has become the main channel for people to obtain information content. For example, people watch videos, browse news, obtain pictures, etc. through the Internet. As the number increases, the pressure on data transmitted on the Internet also increases, which affects the efficiency of people obtaining data from the Internet. Therefore, how to efficiently obtain content from the Internet has become a topic of increasing concern. [0003] The inventor found in long-term research that: a special system network can be constructed to improve content acquisition efficiency, for example: CDN (Content Delivery Network, content distribution network) and P2P (Peer-to-Peer, peer-to-peer network...

AI Technical Summary

Problems solved by technology

The router can intercept the user's content acquisition request and redirect the user's request to the optimal storage device or cache device, but this method only selects a single storage device or cache device to provide service content, and cannot concurrently obtain different content part

Since the router needs to redirect the request, it is necessary to use a method similar to flooding or routing announcement to announce the existence of the cache. However, due to the high dynamics of the cache, the routing convergence is slow and the communication overhead is large.

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