An HAS bandwidth prediction method based on an LTE network link state

A network link and prediction method technology, applied in the field of HAS bandwidth prediction based on LTE network link status, can solve problems such as poor universality, low reliability, and singleness, and achieve good user experience, high switching times and card The effect of the number of pauses, maintaining stability and sensitivity

Active Publication Date: 2019-05-21
XI AN JIAOTONG UNIV +1
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Problems solved by technology

[0010] The above-mentioned related invention patents all predict the bandwidth through the characteristics of the network link, but they all analyze the single characteristic and then select the link, which has poor universality and low reliability.

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  • An HAS bandwidth prediction method based on an LTE network link state
  • An HAS bandwidth prediction method based on an LTE network link state
  • An HAS bandwidth prediction method based on an LTE network link state

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Embodiment Construction

[0042] In order to increase the understanding of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and system implementation.

[0043] as attached figure 1 As shown, the present invention is a kind of HAS bandwidth prediction method based on LTE network link status and is implemented by three parts, is respectively to construct the variable flu that reflects link throughput jitter degree and the variable trend that reflects link throughput jitter trend, Adjust and calculate the values ​​of the number of video fragments m and λ according to flu and trend, and finally substitute into the formula for calculating the average throughput and bandwidth prediction to obtain the predicted bandwidth of the link.

[0044] The technical solutions of the present invention will be described in detail below in conjunction with specific application examples.

[0045] Step1, the video playback client accepts a ...

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Abstract

The invention discloses an HAS bandwidth prediction method based on an LTE network link state. The method comprises steps of according to the average throughput rate, the throughput rate jitter valueand the trace fluctuation coefficient of each video fragment, generating a variable flu which reflects the link throughput rate jitter degree, and according to the adjacent throughput rate jitter ratio, generating a variable trace which reflects the link throughput rate jitter trend; Adjusting a lambda value in a weighted average bandwidth prediction formula based on flu, adjusting the number m ofvideo fragments for calculating the average throughput rate based on tend, and respectively substituting the calculated m and lambda into a formula for calculating the average throughput rate and bandwidth prediction so as to obtain the predicted bandwidth of the link through calculation; According to the invention, in different LTE network states, quite high throughput rate and quite less switching frequency times and lagging times can be obtained; the stability and the sensitivity of bandwidth prediction can be effectively kept for different LTE network link states, and a user using the bandwidth prediction algorithm to achieve HAS video application has better user experience.

Description

technical field [0001] The invention belongs to the field of mobile network transmission, and in particular relates to an HAS bandwidth prediction method based on an LTE network link state. Background technique [0002] With the continuous development of LTE mobile networks and the popularity of smart terminal devices, it is becoming more and more popular to use terminal devices to watch videos under the mobile network. HTTP Adaptive Streaming technology (HAS, HTTP Adaptive Streaming) has become the current mainstream streaming media technology because it can effectively reduce the waiting time of video playback and make full use of link bandwidth, and has been widely used in video applications of smart terminals. application. In the LTE mobile network, when factors such as the user's geographical location, mobile speed, and number of network users change, the link status will change frequently, resulting in HAS video applications that use a link bandwidth prediction strate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26H04N21/442
Inventor 杜海鹏宝思阳张未展郑庆华高翔齐冰芳李姝洁王迎春王斌李辉
Owner XI AN JIAOTONG UNIV
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