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Content delivery method and device based on multiple vehicles in vehicle-mounted network

An in-vehicle network and multi-vehicle technology, applied in specific environment-based services, vehicle components, in-vehicle communication, etc., can solve the problems of unstable communication links and low probability of successful content transmission, so as to improve the probability of successful transmission, The effect of reducing request latency

Active Publication Date: 2021-06-15
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The vehicle network has the characteristics of dynamic topology changes. The high-speed mobility of vehicles leads to extremely unstable communication links between vehicles, making the successful transmission of content between vehicles difficult. low probability

Method used

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  • Content delivery method and device based on multiple vehicles in vehicle-mounted network
  • Content delivery method and device based on multiple vehicles in vehicle-mounted network
  • Content delivery method and device based on multiple vehicles in vehicle-mounted network

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Embodiment Construction

[0064] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0065] refer to figure 1 , which is a schematic flowchart of a multi-vehicle-based content delivery method in an in-vehicle network provided by the present invention.

[0066] The requesting vehicle queries the content of the request according to Step 1, Step 2, Step 3.1 and Step 3.2.

[0067] Step 1: If the query is found within the predetermined range of the same lane, the content source vehicle transmits the requested content to the requesting vehicle.

[0068] In the embodiment of the present invention, if the query is obtained within one hop of the lane in the same direction, the content source vehicle will transmit the requested content to the requesting vehicle;

[0069] If there is no query within the range of one hop in the same direction lane, query within the second hop range of the same direction lane, if found, the content sourc...

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Abstract

The invention discloses a multi-vehicle-based content transmission method and device in a vehicle-mounted network, and the method comprises the steps: 1, transmitting a request content to a request vehicle through a content source vehicle if the request content is obtained through querying in a preset range of a lane in the same direction; if the request vehicle is not inquired in the step 1, carrying out the following step 2: the request vehicle inquires in a predetermined range of a reverse lane in front of driving, if the request vehicle is inquired, enabling the request vehicle and the content source vehicle to respectively form a request cluster and a content source cluster with other vehicles in the predetermined range, and enabling the content source cluster to transmit the request content to the request cluster and finally transmit the request content to the request vehicle; if the request content is not inquired in the step 2 and the request vehicle is not in the coverage range of the roadside unit, carrying out the following step 3.2: enabling the roadside unit to transmit the request content to a content source cluster meeting the request vehicle according to the prediction result, and enabling the content source cluster to transmit the request content to the request vehicle. By adopting the scheme, the probability of successful content transmission is improved, and the request delay of the vehicle is reduced.

Description

technical field [0001] The present invention relates to the field of vehicle network technology, in particular to a method and device for delivering content based on multiple vehicles in the vehicle network. Background technique [0002] In recent years, with the rapid development of intelligent transportation systems, various in-vehicle applications have appeared in people's lives, such as road safety, intelligent transportation, in-car entertainment, and driverless applications. With the increase of the number of vehicles, the communication load of the vehicle network increases sharply. In addition, the content requested by the vehicle needs to be transmitted from the content service center, which brings a long request delay and reduces the quality of user experience. In order to reduce the communication load of the vehicular network and reduce the request delay of the vehicle, caching technology is introduced into the vehicular network. [0003] Caching technology is to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/48H04L29/08G06N3/04G06N3/08
CPCH04W4/48H04L67/12G06N3/04G06N3/08
Inventor 朱琦岳少奇
Owner NANJING UNIV OF POSTS & TELECOMM
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