Internet of Vehicles content cache decision optimization method

Abstract

The invention relates to an Internet of Vehicles content cache decision optimization method, which belongs to the technical field of mobile communication. In the Internet of Vehicles content cache decision optimization method, the Internet of Vehicles is provided with a plurality of content cache nodes, and the content requested by a vehicle can be stored in the content cache nodes; if a nearby vehicle or a roadside unit already caches the request content of the current vehicle, the current vehicle obtains a content service from the cache node through a V2V link or a V2I link; a mobile edge computing server is deployed on the RSU side, can provide storage and computing capabilities and is used for content storage and processing; and due to the fact that the moving speed of the vehicle is high, the content request vehicle cannot completely obtain the needed content within a current RSU coverage range, and therefore the content request vehicle needs to continue to obtain the remaining content within a next RSU coverage range. The Internet of Vehicles content cache decision optimization method aims to reduce the total time delay of acquiring the required content by the content requestvehicle. According to the Internet of Vehicles content cache decision optimization method, the association problem of vehicles can be solved, and the content pre-caching is considered, so that the optimal content caching decision is obtained.

Description

technical field [0001] The invention belongs to the technical field of mobile communication, and relates to a decision-making optimization method for Internet of Vehicles content cache. Background technique [0002] As one of the application scenarios under the 5G network, the development of the Internet of Vehicles has been greatly influenced by information and communication technologies, which have promoted a large number of innovations in various fields, including communication, caching. For example, vehicles are interconnected with various infrastructures, devices, users, etc., various services, content and application providers are interconnected through mobile wireless networks, and information and entertainment content are provided for drivers and vehicles. Typical applications of in-vehicle networks include advance safety Warning, managing and playing audio content, driving with navigation, providing entertainment such as movies, games, social networking, etc., and m...

AI Technical Summary

Problems solved by technology

[0003] Although the MEC server provides storage capacity, the available storage space is limited. In order to optimize the vehicle user experience, it is necessary to properly cache the content on the MEC server to improve user experience.

On the other hand, the vehicle travels faster on the road, and the vehicle may not be able to obtain the complete content before switching occurs. The switching requires the vehicle to establish links with the remote server multiple times, and increases the delay in content acquisition.

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