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A content distribution system and method

A distribution system and content technology, applied in the field of data communication, can solve the problems of not using the advantages of network cache, unsatisfactory object or file cost, and single data transmission mode, so as to reduce load, reduce network delay, and improve service quality.

Inactive Publication Date: 2019-08-27
SAMSUNG ELECTRONICS CHINA R&D CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inventors of the present application found that the traditional video caching system usually only sends data according to the request of a single user. This data transmission method is single and does not take advantage of the possible combination of network caching and network coding, which leads to the fact that each transmitted object or The cost of the file is not ideal, so there is still room for further optimization

Method used

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  • A content distribution system and method
  • A content distribution system and method
  • A content distribution system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0122] figure 1 A schematic diagram of the composition and structure of a content distribution system based on encoding cache and multicast adaptive code stream provided by Embodiment 1 of the present invention, the system includes: a content server, a central server, an edge server, and a user terminal. The following describes each composition The sections are detailed separately:

[0123] (1) Content server: multiple video files accessible by user terminals are stored on the content server, and the sizes of these video files may be the same or different.

[0124] In this embodiment, the content server is an MPEG-DASH server.

[0125] The adaptive transport streaming technology based on the HTTP protocol (DASH: Dynamic Adaptive Streaming over HTTP) is a standard jointly formulated by MPEG and ISO at the end of 2011. It is a popular variable bit rate streaming media technology (ABR, Adaptive Bit Rate streaming) in Internet video. ) of a kind. ABR is a method for transmittin...

Embodiment approach

[0156] Refer to as Figure 7 with Figure 8 As shown in the schematic diagram, this embodiment provides an implementation method of a content distribution method based on encoding cache, which specifically includes the following steps:

[0157] Step1. User 1 uses a TV terminal to watch movies and videos, and the TV set-top box terminal sends a video file request message to the edge server. In this embodiment, the TV set-top box terminal is called "user terminal 1", and the edge server is named node1, as shown in the figure "Edge Server 1" is shown.

[0158] Step2. The edge server node1 corresponding to the TV set-top box terminal processes the video file request message. The edge server node1 first checks whether there is a video file requested by the TV set-top box terminal in its own cache. When it finds that the server cache does not cache the requested video file. , execute Step3.

[0159] Step3. The edge server node1 sends a video file request message to the central serv...

Embodiment 3

[0168] Refer to as Figure 9 with Figure 10 As shown in the schematic diagram, the embodiment of the present invention provides an implementation method of a content distribution method based on encoding cache, which specifically includes the following steps:

[0169] Step1. The user uses a TV terminal to watch the movie video "national treasure", and the TV set-top box terminal (i.e. Figure 10 The shown user terminal) sends a video file request message to the edge server. In this embodiment, the edge server is named node1, which is edge server 1 as shown in the figure.

[0170] Step2. The edge server node1 corresponding to the TV set-top box processes the video file request message. The edge server node1 first checks whether there is the requested video file in its own cache.

[0171] Step3. The edge server node1 sends a broadcast message to other nearby edge servers, inquires whether there is a video file requested by the user terminal in other edge servers, and starts a...

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Abstract

The invention discloses a content distribution system, which comprises a content server, a central server, an edge server and a user terminal, and is characterized in that the content server is used for storing a video file which can be accessed by the user terminal; the central server is used for obtaining heat ranking information of the video files according to record statistics of the video files requested by each user terminal, acquiring partial contents of a plurality of video files with highest heat degrees from the content server according to the heat degree ranking information of the video files in a trough period of network link transmission, and sending the partial contents to the edge server for pre-caching; and the edge server is used for sending the video file requested by theuser terminal to the user terminal. The invention further discloses a corresponding content distribution method. By applying the technical scheme disclosed by the invention, the code rate in the video data transmission process can be reduced, and the load of a data link at a server is reduced.

Description

technical field [0001] The present application relates to the technical field of data communication, and in particular to a content distribution system and method. Background technique [0002] In recent years, global Internet traffic has grown dramatically. Video is a major contributor to this growth and will continue to dominate web traffic. This trend is a result of the proliferation of devices such as smartphones, tablets, gaming devices, and smart TVs for accessing video content. According to Cisco's forecast, future network traffic will grow exponentially. By 2021, global Internet users will reach 4.6 billion, network access devices will reach 27.1 billion, and the proportion of video data access will increase to 82%. The amount of data generated will exceed 190EB (1EB equals 230GB). [0003] The networking of a large number of smart terminal devices has brought unprecedented pressure to the backbone network, especially applications such as high-definition video, li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/845H04N21/231H04N21/6405H04N21/6408H04N21/232H04N21/239H04N21/2747
CPCH04N21/8456H04N21/23106H04N21/6405H04N21/6408H04N21/232H04N21/2393H04N21/2747H04N21/222H04N21/6131H04N21/2408H04N21/23103G06N20/00H04N21/2402H04N21/2662H04L65/75H04L65/611
Inventor 黄巍施维俊
Owner SAMSUNG ELECTRONICS CHINA R&D CENT
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