A transmission method of SVC video in Internet of Vehicles
A transmission method and video transmission technology, which is applied in the field of fifth-generation wireless communication, can solve problems such as limited processing capacity of reinforcement learning algorithms, heavy burden on the core network, and high delay in video transmission, so as to reduce transmission burden, save costs, and improve coverage wide effect
Active Publication Date: 2021-05-14
SHANXI UNIV
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[0003] The purpose of the present invention is to provide a transmission method of SVC video in the Internet of Vehicles in order to solve technical problems such as high time delay in video transmission in the Internet of Vehicles, a large burden on the core network, and limited processing capacity of traditional reinforcement learning algorithms.
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[0049] Such as figure 1 As shown, the role of the SVC video server is to provide video for vehicle users; the object controlled by the wireless network controller is the roadside unit, which includes 4 base stations and 1 modified traffic light, and the number of vehicle users on the road Recorded as U=15, the same number of cars in the picture means that the videos they request are the same, there are 5 cars with number 1, 5 cars with number 2, and 5 cars with number 3. The downlink communication process is as follows: the SVC video server sends the video requested by the vehicle user to the wireless network controller through the core network, and then the wireless network controller sends it to each roadside unit, and finally the roadside unit sends it to the vehicle user. When a video is requested by multiple vehicle users, the content popularity of the video is considered to be high, and it will be cached in the roadside unit so that it can be sent to other vehicle users ...
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The invention belongs to the technical field of fifth-generation wireless communication, and in particular relates to a method for transmitting SVC video in the Internet of Vehicles. The purpose is to solve technical problems such as high latency in video transmission in the current Internet of Vehicles, heavy burden on the core network, and limited processing capacity of traditional reinforcement learning algorithms. In order to reduce the time delay and reduce the burden of the core network, the present invention caches the highly popular SVC video in the roadside unit RSU. If the SVC video requested by the vehicle user happens to be stored in the roadside unit RSU, it is directly sent The RSU sends the SVC video to the vehicle user, and then transmits it from the SVC server. This not only saves part of the time for the SVC server to send the SVC video to the roadside unit RSU, but also prevents the video from frequently traveling through the core network to reduce the transmission burden of the core network.
Description
technical field [0001] The invention belongs to the technical field of fifth-generation wireless communication, and in particular relates to a method for transmitting SVC video in the Internet of Vehicles. Background technique [0002] With the help of the high speed, low latency and large coverage of the 5G network, the video transmission business in the Internet of Vehicles has developed rapidly, and has great application value in the directions of driverless driving, entertainment, route navigation and rescue. The current method of video transmission in the Internet of Vehicles is to use Scalable Video Coding (SVC) technology to encode the video stream into a base layer and several enhancement layers, and only transmit and decode the code stream of the base layer. Moreover, the current method of video transmission in the Internet of Vehicles is to optimize the system throughput or energy efficiency, ignoring the importance of video quality and delay; in addition, the vide...
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IPC IPC(8): H04N19/34H04N21/2343H04N21/4402H04N21/647
CPCH04N21/234327H04N21/440227H04N21/64792H04N19/34
Inventor 付芳张志才
Owner SHANXI UNIV