Panoramic video multicast method and device in satellite-ground fusion network

Abstract

The embodiment of the invention provides a panoramic video multicast method and device in a satellite-ground fusion network. The method comprises the following steps: grouping user terminals accordingto main view angle prediction information of the user terminals to obtain multiple pieces of bottom-layer user terminal grouping information; performing bandwidth allocation according to the groupinginformation of the plurality of underlying user terminals to obtain bandwidth allocation information of the user terminals; and splicing the high-quality user terminal main view angle patch information and the low-quality user terminal auxiliary view angle patch information to obtain a panoramic VR video, and performing multicast real-time transmission on the panoramic VR video according to the user terminal bandwidth allocation information. According to the method, secondary grouping is carried out, bandwidth allocation is carried out by taking a group as a unit according to a grouping result, spectrum sharing is carried out by taking the group as a unit, network utility maximization is realized, and user utility is effectively improved and VR wireless use experience of a user terminal is improved through a multicast transmission method on the premise of the same bandwidth.

Description

technical field [0001] The invention relates to the technical field of information processing, in particular to a panoramic video multicast method and device in a satellite-terrestrial fusion network. Background technique [0002] Virtual reality (Virtual Reality; VR) is becoming more and more popular because it provides users with extraordinary experiences through panoramic immersive environments. [0003] A Head Mounted Display (HMD) device is a dedicated VR user device that allows users to watch videos from the center of a sphere. Most HMD devices, such as the Oculus Rift, rely on a wired connection to a computer to process VR content, which obviously greatly restricts user movement and hampers the user experience. To provide a fully immersive experience, VR systems need to utilize wireless connectivity. Compared with traditional videos, VR videos can be watched in 360 degrees, and correspondingly the video size is much larger, and the data rate requirement of a single ...

AI Technical Summary

Problems solved by technology

However, in a satellite-ground integrated network, the ground uplink station often makes decisions on user perspective prediction and grouping for multicasting, and then sends the command to the satellite, and then transmits it to ATC through the satellite. The delay in the whole process is high, which cannot meet VR service requirements

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