GB/T 38801-2020Technical requirements for content distribution network—Interconnection use cases (English PDF)

2.1 Terms and definitions

The following terms and definitions apply to this document.

2.1.1 Content distribution network

In order to deliver content to end users more efficiently, interoperable network infrastructure is implemented in network units of layers 4-7.

Note. A typical CDN consists of a request routing system, a distribution system (including cache devices/function sets), a log system, and a CDN control system.

2.1.2 Authorized CDN authoritativeCDN

To distribute and deliver CSP content, through CDN authorized by CSP or downstream of CDN authorized by CSP and CSP CDN directly associated.

2.1.3 CDN provider

A business provider that operates a CDN and provides content distribution services.

Note. A given entity may simultaneously provide multiple services as multiple operating roles.

2.1.4 Content

Any form of digital data.

Note. With distribution and delivery of content, including streaming media, pictures, text, etc.

2.1.5 Content service

Provide end users with content in a specific format.

Note. Content services include complete services, which can only provide complete services to access content, program guides, etc.

2.1.6 Control system

Responsible for starting and controlling other CDN components and handling CDN functions that interact with external systems.

2.1.7 Delivery

The CDN function is responsible for delivering part of the content to the end user.

2.1.8 Distribution system

Responsible for distributing content, distributing metadata, and the CDN function of the content itself in the CDN.