Scalable video downloading method and system in ultra-dense cellular network

Abstract

The invention discloses a scalable video downloading method and system in an ultra-dense cellular network, and the method comprises the steps: selecting an optimal connection base station combinationof a b-th video block with the number of layers being M through employing an upper confidence algorithm selected by an optimal arm; when the layer number is greater than 1, judging whether the bth video block with the layer number of M downloaded by adopting the optimal connection base station combination is stuck or not: if so, subtracting 1 from the value of the layer number M of the b-th videoblock, re-optimizing the connection base station combination, and when the layer number is 1 or not stuck, downloading the b-th video block with the layer number of M by adopting the optimal connection base station combination; and repeating the above steps until downloading of all video blocks is completed. According to the invention, the optimal connection base station combination of the video block to be downloaded at present is selected through the multi-step decision of the video requested by the user, so that the downloading problem of the scalable video in a dense base station network environment is solved, and the video watching experience quality of the user is 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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