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A Bandwidth Allocation Method with User Perceived Quality of Experience

A bandwidth allocation method and a quality of experience technology, applied in the field of optical fiber wireless access networks, can solve problems such as lack of quality of experience, and achieve the effect of solving the problem of video playback interruption and ensuring uninterrupted video playback

Active Publication Date: 2021-10-08
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

However, this solution is optimized based on channel conditions in the current transmission cycle, and does not solve the problem from the perspective of user experience quality when watching videos
[0004] When wireless time-varying channels transmit real-time scalable video to multiple users, bandwidth allocation plays an important role in user quality of experience, and channel fluctuations pose a great challenge to satisfying the quality of experience (QoE) required by users

Method used

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  • A Bandwidth Allocation Method with User Perceived Quality of Experience
  • A Bandwidth Allocation Method with User Perceived Quality of Experience
  • A Bandwidth Allocation Method with User Perceived Quality of Experience

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Embodiment Construction

[0044] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0045] The present invention provides a bandwidth allocation method with user-perceived quality of experience, which is mainly used to solve the situation that the bottleneck link in the WMN network cannot provide the bandwidth required by the user set on demand, resulting in the interruption of video playback. figure 1 It is a system architecture diagram of bandwidth allocation in the present invention.

[0046] figure 2 A flowchart of the method, such as figure 2 As shown, a bandwidth allocation method with user-perceived quality of experience provided by the present invention specifically includes the following steps:

[0047] Input: WMN network topology G(V,E), and videos s requested by the user set.

[0048] Output: Bandwidth obtained by the user.

[0049] S1: Calculate user u j Interruption probability: In order to solve the probl...

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Abstract

The invention relates to a bandwidth allocation method with user-perceived quality of experience, and belongs to the technical field of optical fiber wireless access networks. This method aims at the problem of discontinuous playback of video services caused by unreasonable bandwidth allocation in multi-user scenarios in the front-end network of optical fiber wireless access network. Video interruption is used as a parameter of user perceived quality of experience, and a bandwidth allocation mechanism is proposed to solve the problem of unreasonable bandwidth allocation. Reasonably caused video interruption issues. The present invention comprises the following steps: firstly, according to the video content information and the video quality layer, using the diffusion approximation method to establish the video playback diffusion process and derive the underflow probability model; then, according to the underflow probability of the buffer area, the quality of the played video and the bandwidth change The utility function of the overall user perception experience quality evaluation model is established; finally, in order to maximize the overall user experience quality within the bandwidth constraints, the bandwidth allocation problem is expressed as a convex optimization problem, and the Lagrangian multiplier method is used to automatically Adaptively allocate each user's requested bandwidth.

Description

technical field [0001] The invention belongs to the technical field of optical fiber wireless access network, and relates to a bandwidth allocation method with user perceived quality of experience. Background technique [0002] With the wide-scale application of mobile devices and the increasing demand for watching videos anytime and anywhere, users hope to maintain Internet connections while moving; in order to ensure high bandwidth and good delay-sensitive features of video services, the network must have more Excellent carrying capacity. Fiber-Wireless (FiWi) access network is a new type of converged network that combines optical network and wireless access. To meet the needs of future access networks, the back-end Passive Optical Network (PON) has the advantages of large capacity and high bandwidth, which can ensure the efficient transmission of video services, and the flexibility of the front-end Wireless Mesh Network (WMN) A connection that can provide mobility to th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q11/00H04W28/20
CPCH04Q11/0062H04Q2011/0086H04W28/20
Inventor 吕翊朱博吴大鹏王汝言张鸿
Owner CHONGQING UNIV OF POSTS & TELECOMM
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