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Method and device for assessing quality of experience (QoE) of TCP (Transmission Control Protocol) video stream service

A quality of experience and video streaming technology, applied to electrical components, transmission systems, etc., can solve the problems of real experience deviation, poor evaluation effect, and less consideration of users watching video experience, so as to improve accuracy and improve evaluation effect

Inactive Publication Date: 2016-08-24
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the QoE evaluation scheme disclosed in the above-mentioned patent application only considers the network layer performance and application layer performance of the video streaming service, and seldom considers the user's feeling when watching the video and the interactive behavior of the user when watching the video, which is not in line with the reality. application scenarios
User interaction behavior and user experience are unavoidable important factors in the QoE evaluation of video service flows. In the QoE evaluation of video service flows, if user interaction behavior and user experience are not considered, the QoE evaluation results and the real user experience will be different. Large deviation, poor evaluation effect

Method used

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  • Method and device for assessing quality of experience (QoE) of TCP (Transmission Control Protocol) video stream service
  • Method and device for assessing quality of experience (QoE) of TCP (Transmission Control Protocol) video stream service
  • Method and device for assessing quality of experience (QoE) of TCP (Transmission Control Protocol) video stream service

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Embodiment 1

[0051] Such as figure 1 As shown, Embodiment 1 of the present invention provides a method for evaluating the user experience quality of a TCP video streaming service, including the following steps:

[0052] S101. Monitor and record the user interaction behavior when the client watches the video to be evaluated, including pause, fast forward, rewind and selected resolution;

[0053] When the user watches the video through the client, the script written by JavaScript is used on the client, and through the API of HTML video events, the user can control the player on the browser, and can monitor and record the user's actions during the video watching process. interactive behavior.

[0054] S102. According to the network layer performance, application layer performance and the user interaction behavior when the client watches the video to be evaluated, obtain a plurality of performance quantification indicators representing the playback fluency, content attractiveness and picture ...

Embodiment 2

[0090] Such as figure 2 As shown, another TCP video stream service user quality of experience evaluation method provided by the embodiment of the present invention is a preferred solution of embodiment 1. The difference between embodiment 2 and embodiment 1 is that after step S101 is executed After that, and before performing step S102, the method also includes:

[0091] S105. Screen the user interaction behavior.

[0092] It is understandable that users may perform various interactive behaviors while watching videos, but some of them are not often done by users, the probability of occurrence is small, the impact weight is low, and the research value is not great; some user behaviors Usually occurs randomly, with uncertainty. Therefore, properly screening the user interaction behavior can further improve the accuracy of QoE evaluation of the TCP video service flow.

[0093] Similarly, if the user interaction behavior in the sample data obtained through the subjective evalu...

Embodiment 3

[0109] As a preferred solution of embodiment 1 or embodiment 2, the difference between embodiment 3 and embodiment 1 or embodiment 2 is that the BP neural network model adopted in this embodiment is obtained by using sample data training , the specific process of training the BP neural network model is as follows:

[0110] In step 1, a subjective evaluation experiment of user experience quality of users watching videos is carried out to obtain sample data.

[0111] In the experiment, the male and female ratio of the subjects was coordinated, and they came from different backgrounds. build as Figure 5 The HTTP video transmission system shown in Figure 5 Among them, 1 represents the server, 2 represents the router, and 3 represents the client for users to watch videos. On router 2, TC commands are used to control netem to simulate different network environments. The network parameters are set as shown in Table 1.

[0112] Table 1 Network parameters set in the subjective eva...

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Abstract

The invention discloses a method and a device for assessing quality of experience (QoE) of a TCP (Transmission Control Protocol) video stream service, and aims to monitor and record user interaction behaviors including pause, fast forward, backward and a selected resolution during watching of a video to be assessed on a client. The method comprises the following steps: acquiring a plurality of performance quantitative indexes representing the playing smoothness, content attraction degree and picture definition of the video to be assessed according to network layer performance, application layer performance and user interaction behaviors during watching of the video to be assessed on the client; inputting the performance quantitative indexes into a BP (Back Propagation) neural network model to obtain a subjective experience MOS (Mean Opinion Score) value; and determining the quality of experience (QoE) of the video to be assessed according to the MOS value. Through application of the scheme provided by the invention, an obtained assessment result can be closer to real experience of a user; the QoE assessment accuracy of the TCP video stream service is increased; and a good assessment effect is achieved.

Description

technical field [0001] The present invention relates to the technical field of user experience quality evaluation of video streaming services, in particular to a method and device for evaluating user experience quality of TCP video streaming services. Background technique [0002] With the rapid development of the Internet and the emergence of a large number of media information, the video streaming service has gradually become one of the most important services of network service providers. At the same time, with the rapid development of smart terminals, more and more users watch videos through the Internet. When users watch online video, they not only hope that the video is clear and smooth, but also that the content of the video can be rich and interesting. The satisfaction of video services is the comprehensive consideration of clarity, smoothness and content, that is, users have higher and higher requirements for video services. Therefore, in order to win more users, o...

Claims

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Application Information

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IPC IPC(8): H04L29/06
CPCH04L65/80H04L65/65
Inventor 李文璟王瑞一孟洛明喻鹏
Owner BEIJING UNIV OF POSTS & TELECOMM
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