Mixed priority-based mobile medical streaming media data scheduling method and system

Abstract

The invention provides a mixed priority-based mobile medical streaming media data scheduling method. The method comprises the steps of establishing a coordinate system with a playing sequence time axis to be horizontal coordinates, and the layers of layered streaming media data as vertical coordinates; in the above coordinate system, setting a cache region window for streaming media data on the playing sequence time axis with a playing point bu as a starting point; according to the distance relative to the playing point, dividing the cache region window into a plurality of different scheduling regions; setting a critical layer lc on the data hierarchy of the layered streaming of the vertical coordinates; adopting streaming media data above the critical layer as high layers, and streaming media data below the critical layer as low layers. The invention is characterized in that the high-layer and low-layer streaming media data of different scheduling regions in the cache region window per unit time are scheduled in the polling manner according to the global priorities thereof. In this way, the balance between the definition and the fluency is guaranteed on the condition that the bandwidth is limited. The invention further provides a mobile medical streaming media system based on the above scheduling method.

Description

technical field [0001] The invention relates to a streaming media data scheduling method, in particular to a mobile streaming media data scheduling method based on mixed priority. Background technique [0002] Telemedicine technology is an interdisciplinary high-tech that is developing very rapidly in the world at present. It has crossed national boundaries and time and space, and has had a huge and realistic impact on healthcare reform. Its significance lies in breaking geographical boundaries and enabling patients in remote areas to enjoy high-level It can also improve the level of medical services in big cities, improve the level of medicine itself, and allocate medical resources more reasonably. It will undoubtedly greatly promote the development of medical and health care. With the explosion of the mobile Internet and the advent of the 4G era, mobile medical streaming media, as a new service for telemedicine, has become a research hotspot. In the future, no matter remo...

AI Technical Summary

Problems solved by technology

The principle of bandwidth allocation is to allocate the bandwidth to the emergency scheduling area first, then allocate the remaining bandwidth to the decision-making scheduling area, and finally allocate the bandwidth to the scarce scheduling area. This cannot well adapt to the situation of rapid bandwidth changes and poor channels in mobile networks.

For example, when the bandwidth is relatively low, if the high-level data in the emergency area is still given priority, the data in the middle and low-level areas of the latter two areas will be missing, which may cause interruption of streaming media playback

[0010] The second is the inability to balance clarity and fluency

[0013] Therefore, almost none of the above-mentioned existing streaming media data scheduling algorithms provide data scheduling algorithm solutions for the requirements of mobile medical streaming media: medical streaming media has the characteristics of high definition, high fluency, and a small number of nodes. Algorithms cannot be directly applied

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