Smooth rate adaptation method and smooth rate adaptation device for improving fairness

Abstract

Embodiments of the invention provide a smooth rate adaptation method and a smooth rate adaptation device for improving fairness. The method comprises the following steps: a client obtains the predicted bandwidth corresponding to a target fragment sequence according to the obtained predicted bandwidth and download bandwidth corresponding to a historical fragment sequence; the client obtains the target rate of the target fragment sequence according to the predicted bandwidth corresponding to the target fragment sequence and the cache size of a current client; the client acquires a target fragment sequence of which the rate version is the target rate from a server; and the client acquires multiple fragment sequences constituting a target file from the server. According to the embodiments of the invention, the predicted bandwidth corresponding to the target fragment sequence is detected, which ensures that multiple clients can share network bandwidth resources fairly; the target rate of the target fragment sequence is obtained according to the predicted bandwidth corresponding to the target fragment sequence and the cache size of the current client, which can ensure high bandwidth utilization rate and smooth video rate at the same time; and finally, the quality of service of a dynamic HTTP streaming media transmission system is improved.

Description

technical field [0001] The embodiments of the present invention relate to the field of computer technology, and in particular, to a method and device for smooth code rate self-adaptation that improves fairness. Background technique [0002] Hypertext Transfer Protocol (HTTP) is the most widely used network protocol in the Internet, and all WWW files must comply with this standard. With the development of the International Standard of Moving Picture Experts Group-Dynamic Adaptive Streaming over HTTP (MPEG-DASH for short) and the continuous improvement of network streaming technology, HTTP-based dynamic streaming media transmission technology applications are also increasing. [0003] In dynamic HTTP streaming media, bitrate adaptive methods are crucial in ensuring high-quality video streaming services. Existing code rate adaptation methods aim to adapt the video code rate to changes in available bandwidth to obtain higher bandwidth utilization, or maintain the client's vide...

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Problems solved by technology

[0004] However, the existing bit rate adaptive method cannot guarantee high bandwidth utilization and video bit rate smoothness at the same time. In addition, when multiple clients compete for network bandwidth resources at the same time, the existing bit rate adaptive method cannot guarantee multiple Clients share network bandwidth resources fairly, resulting in low service quality of dynamic HTTP streaming media transmission system

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