A scalable video download method and system in an ultra-dense cellular network

Abstract

The invention discloses a scalable video download method and system in an ultra-dense cellular network. In the scalable video download method, firstly, the upper confidence algorithm of the optimal arm selection is used to select the bth video block whose layer number is M The optimal connection base station combination; when the number of layers is greater than 1, it is judged whether the bth video block with the number of M layers downloaded by using the optimal connection base station combination will freeze, and when there is a freeze, the layer of the bth video block The number M is reduced by 1, and the optimal combination of base stations is re-connected. When the number of layers is 1 or there is no freeze, use the optimal combination of connection base stations to download the bth video block with the number of layers M; repeat the above steps until it is completed Download of all video chunks. The present invention selects the optimal connection base station combination of the current video block to be downloaded through multi-step decision-making for a section of video requested by the user, and solves the problem of downloading scalable video in a dense base station network environment, so that users can enjoy the quality of experience watching videos got improved.

Description

technical field [0001] The invention relates to the technical field of video download, in particular to a scalable video download method and system in an ultra-dense cellular network. Background technique [0002] In terms of video applications, the current network capacity cannot adapt to the dynamic growth of user needs, especially wireless networks. In wireless networks, smooth and high-quality video streaming may not be guaranteed, resulting in low Quality of Experience (QoE) for mobile video users. Therefore, how to improve the efficiency and quality of video streaming as much as possible under limited wireless network resources has become a challenge. [0003] As an extension of the H.264 / AVC standard, scalable video coding can provide video users with multiple video qualities and adapt to dynamically changing wireless network conditions. Scalable video coding encodes a video into multiple video blocks, and a video block into multiple layers, including a base layer a...

AI Technical Summary

Problems solved by technology

However, these methods only consider that the user is connected to a single base station. However, due to the backhaul limitation of a single base station, the quality and speed of video download cannot be guaranteed, which limits the user's quality of experience.

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