Design And Implementation Of Virtual Reality Transmission System Based On Multipath Collabration

The popularity of Virtual Reality(VR)technology is increasing day by day,and the content of virtual reality is growing rapidly.Virtual reality technology has broad development prospects in the future.However,virtual reality applications pose unique requirements and challenges to network performance in terms of bandwidth,delay,and packet loss.According to the characteristics of field of view(FOV)transmission in virtual reality,under the condition of wireless home network,for the two high-frequency application scenarios of single-user scene and multi-user group scene,how to use limited network resources Making full use of the channel bandwidth,reducing redundant data transmission,and virtual reality's requirements for high bandwidth and low latency have conducted in-depth research,and designed a virtual reality transmission system based on multi-path coordination.The main innovations of this article are as follows:(1)This project proposes a QoE(Quality of Experience)evaluation method based on viewpoint optimization.The viewport characteristics of the virtual reality content are fully considered in the virtual reality video quality calculation process,and the evaluation results are more suitable for the actual application of virtual reality.Features,using this QoE indicator as a control factor for the rate-adaptive algorithm can improve transmission efficiency without affecting user experience.(2)This subject proposes a multi-path scheduling algorithm based on the characteristics of the virtual reality viewport.By decoupling the data transmitted by the multi-path,it solves the most difficult problem of head-of-line blocking in the existing multi-path transmission,and In the data routing stage,a more accurate selection of link quality is achieved through reinforcement learning algorithms,thereby improving data transmission efficiency.(3)Focusing on the virtual reality application scenario of multiple users watching panoramic videos or participating in games at the same time,this topic proposes a novel multi-path cooperative transmission mechanism in multi-user scenarios,without affecting the user experience Under the premise of effect,the amount of transmitted data is reduced by effectively reducing redundant data transmission.