Bandwidth allocation method with user perception experience quality

A bandwidth allocation method and a quality-of-experience technology, applied in the field of optical fiber wireless access networks, which can solve problems such as lack of quality of experience

Active Publication Date: 2020-07-24
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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  • Bandwidth allocation method with user perception experience quality
  • Bandwidth allocation method with user perception experience quality
  • Bandwidth allocation method with user perception experience quality

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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 perception experience quality, belongs to the technical field of optical fiber wireless access networks, and aims at the problem of discontinuous video service playing caused by unreasonable multi-user scene bandwidth allocation in a front-end network of an optical fiber wireless access network. A video interruption is taken as a parameter of user perception experience quality, a bandwidth allocation mechanism is provided, and the problem of video interruption caused by unreasonable bandwidth allocation is solved. The method comprises the following steps: firstly, establishing a video playing diffusion process by utilizing a diffusion approximation method according to video content information and a video quality layer, and exporting an underflow probability model; then, establishing an overall user perception experience quality evaluation model according to the underflow probability of the cache region, the quality of the played video and the utility function of the bandwidth change; and finally, in order to ensure that the experience quality of the whole user is maximized within the bandwidth constraint, expressingthe bandwidth allocation problem as a convex optimization problem, and adaptively allocating the request bandwidth of each user by adopting a Lagrange multiplier method.

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 Applications(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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