Method and system for realizing content delivery network based on software defined network

A content distribution network and software-defined network technology, which is applied in transmission systems, electrical components, etc., can solve the problems of closed hardware specificity and management complexity of the bearer network

Active Publication Date: 2016-05-11
ZTE CORP
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Problems solved by technology

[0010] In order to solve the above-mentioned problems, the present invention provides a method and system for implementing CDN based on SDN, which can effectively solve the problems faced by CDNs such as the closedness of the bearer network, the specificity of hardware, and the complexity of management

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  • Method and system for realizing content delivery network based on software defined network
  • Method and system for realizing content delivery network based on software defined network

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Embodiment Construction

[0071] In order to make the purpose, technical solution and advantages of the application clearer, the embodiments of the application will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0072] figure 1 Realize the system structural block diagram of CDN based on SDN for the present invention, as figure 1 As shown, including: SDN application unit, orchestration unit, control unit and data forwarding unit; where,

[0073] The application unit includes: a request module and an operation module; among them,

[0074] The request module is used to add the complete business logic function of CDN. When receiving the CDN application application, it sends the resource requirement request and business orchestration request to the orchestration unit;

[0075] The operation module is...

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Abstract

The invention discloses a system and a method for realizing a content delivery network (CDN) based on a software defined network (SDN). The method comprises the steps of adding a complete business logic function of the CDN into a SDN application layer; when an application unit receives a CDN application request, transmitting a resource requirement and a business orchestration request to an orchestration unit; performing business orchestration by the orchestration unit according to related information of the SDN, transmitting the reserved application of the required resource to a control unit for acquiring the required resource, and afterwards determining a content distributing / delivery path according to network load balance and router condition; establishing an L2 / L3 forwarding table according to an SDN control surface forwarding related strategy and transmitting the L2 / L3 forwarding table to a data forwarding unit; and performing related operation by the application unit according to a content distributing or media accessing request, and performing data forwarding by the data forwarding unit. The method and the system realize DCN based on the SDN and effectively settle the problems of CDN bearing network closeness, hardware specificity and management complexity. Furthermore the system and the method realize reasonable selection for resources, engines and paths required by the CDN.

Description

technical field [0001] The present application relates to content distribution technology, especially a method and system for implementing a content distribution network (CDN) based on a software-defined network (SDN) in a loosely coupled mode. Background technique [0002] SDN is a new network technology that has emerged in recent years. Its main features are separation of control and forwarding, open and programmable network, and separation of software and hardware. SDN enables traditional communication network equipment to be liberated from exclusive hardware binding, develop towards a general hardware platform plus custom software, and realize network function virtualization, network management simplification, and network deployment automation through open programming interfaces , thus greatly saving equipment cost, labor cost and deployment time compared with traditional network function realization and engineering implementation. Divided by architecture level, SDN is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08H04L45/42H04L47/80H04L45/74
CPCH04L65/40H04L67/63H04L67/568H04L41/0894H04L47/83H04L41/0803H04L69/321H04L67/1001H04L65/75H04L45/745H04L47/783H04L47/803H04L67/1008
Inventor 王东
Owner ZTE CORP
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