SD-RAN-based whole network collaborative content caching management system and method

A technology of content caching and management system, which is applied in the field of network-wide collaborative content caching management system, and can solve problems such as inability to obtain caching decisions, difficult implementation of the system, and high complexity of distributed collaboration

Active Publication Date: 2016-04-13
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

On the one hand, this kind of distributed cooperation between adjacent nodes has high complexity and long delay, which is difficult to realize in the actual syste

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  • SD-RAN-based whole network collaborative content caching management system and method
  • SD-RAN-based whole network collaborative content caching management system and method
  • SD-RAN-based whole network collaborative content caching management system and method

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Embodiment Construction

[0057] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0058] Such as figure 1 As shown, the present invention provides an SD-RAN-based collaborative content cache management system for the entire network, and the system includes:

[0059] Cloud platform: The cloud platform gathers a large number of baseband processing units (BaseBandUnit, BBU) to form a powerful computing resource pool (BBU pool). The BBU pool can be composed of a large number of high-performance physical processors, such as general purpose processors (General Purpose Processor, GPP) and digital signal processors (Digital Signal Processor, DSP) to form a high-speed computing system, ...

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Abstract

The invention discloses an SD-RAN (software defined radio access network)-based whole network cooperative caching management system and method. According to the SD-RAN (software defined radio access network)-based whole network cooperative caching management system and method, a content-popularity mapping table and a wait caching/replacement list are generated through detection and content popularity statistics, and a caching decision is made according to the wait caching/replacement list, and is issued to a caching node, so that caching and update can be carried out; a real-time global caching mapping table is obtained through monitoring the caching decision; and the caching node responds to a content request and delivers corresponding content according to the content request of a user of a current cell; characteristics of limitation of content acquisition delay and the change of the popularity of different content with time and places are fully considered, and a global network view in a control layer of a software defined network is fully utilized, and therefore, the detection range of the popularity of content can be expanded; and based on whole network cooperative caching optimized content arrangement, a situation that content is repeatedly called from a remote-end content server can be avoided, and network overhead can be reduced, and user experience can be improved.

Description

technical field [0001] The present invention belongs to the technical field of wireless communication, and more specifically relates to a network-wide collaborative content caching management system (Caching Management System, CMS) and method based on a software-defined access network (Software Defined-Radio Access Network, SD-RAN). Background technique [0002] Cache is a content storage technology. Based on this technology, it can effectively alleviate the capacity bottleneck of the backhaul network and avoid the problem of the same content being repeatedly called and transmitted from the remote server. In view of this, caching technology is considered to be a key technology that can significantly improve resource utilization and reduce network delay. [0003] Caching technology is to store popular content in the cache server and deploy it on the edge of the network near the user, so that the user can obtain the required information in a more flexible and efficient manner....

Claims

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Application Information

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IPC IPC(8): H04L29/08
CPCH04L67/56H04L67/568
Inventor 李强张蔡霞张涛葛晓虎
Owner HUAZHONG UNIV OF SCI & TECH
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