CN107911404B - Internet of vehicles cloud big file compression and downloading method - Google Patents
Internet of vehicles cloud big file compression and downloading method Download PDFInfo
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- CN107911404B CN107911404B CN201710912519.0A CN201710912519A CN107911404B CN 107911404 B CN107911404 B CN 107911404B CN 201710912519 A CN201710912519 A CN 201710912519A CN 107911404 B CN107911404 B CN 107911404B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/565—Conversion or adaptation of application format or content
- H04L67/5651—Reducing the amount or size of exchanged application data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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Abstract
The invention discloses a method for compressing and downloading a cloud big file in an internet of vehicles, which comprises the following steps: s1, the marked vehicle enters the coverage range of a certain RSU, and the cloud agent sends a download request of a specific file to the vehicle according to the daily driving route and interest preference of the marked vehicle; s2, using cloud agent to predict and compress the download time of the specific file; s3, the vehicle downloads the compressed file from the road side unit RSU. The method and the device solve the problems that the downloading time of the large file in the Internet of vehicles is long and the data integrity is difficult to ensure, and the Internet of vehicles is combined with cloud computing, and the large file is compressed and downloaded by using the cloud agent, so that the problem of resource occupation in the communication process is relieved, and the waiting time of a user is reduced; the invention can improve the utilization rate of network resources and the satisfaction degree of users under the conditions of ensuring the integrity of downloaded contents and meeting time limit.
Description
Technical Field
The invention relates to the technical field of vehicle networking communication, and discloses a method for downloading data by a vehicle through a road side device access network in a high-speed environment, in particular to a method for compressing and downloading cloud large files in a vehicle networking.
Background
With the continuous progress of the comprehensive sustainable development of China in various fields such as economy, science and technology, the quantity of motor vehicles kept is rapidly increased. The number of automobiles is rapidly increased, and meanwhile, the traveling demands of people show high requirements and a plurality of types. People's travel attention gradually extends from initial safety and efficiency to comfort and entertainment, pursuing maximum efficiency of word travel. For example, for a trip from home to unit, while ensuring safety and convenience, a user wants to obtain information of merchants near a route, including business hours of business trips, movie theaters, gas stations and the like, recent preferential activities and the like; non-drivers in a vehicle may also wish to obtain online entertainment and information services, including video downloads, online web browsing, etc. In order to realize the functions, the internet of vehicles is used as an important component part for the development of an intelligent transportation system, and the distribution and downloading of the audio and video large file content from the road equipment to the target vehicle can be effectively realized in a high-speed mobile environment.
Although there are many achievements on the distribution and downloading of large files by using the internet of vehicles to improve the data distribution efficiency, there still remains a need for improvement in order to meet the requirement of downloading the content of the large files of users to a certain extent, and how to ensure the integrity of the file downloading within the coverage range of a single road side unit RSU of a vehicle still needs a new solution.
In the car networking environment, due to the fact that behaviors, interests, hobbies and the like of vehicles are different, the requirements for different resources in the car networking are different, and the requirements of users for the time and the quality of downloading large files are increased continuously. In order to guarantee the integrity of file contents and the limitation of user tolerance time, and simultaneously consider that the cloud agent has strong computing and compressing capabilities, the large file is compressed and downloaded in a vehicle networking cloud mode by combining the vehicle networking with the cloud computing.
Disclosure of Invention
The invention aims to provide a compression downloading method for a cloud large file of an internet of vehicles, which is used for realizing the integrity of downloaded content, reducing the occupation of network resources and improving the user experience and satisfaction.
In order to achieve the purpose, the invention adopts the following technical scheme: a method for compressing and downloading a cloud large file in the Internet of vehicles comprises the following steps:
s1, the marked vehicle enters the coverage area of a certain RSU, and the cloud agent sends a downloading request of a relevant matching file to the vehicle according to the daily driving route and preference of the marked vehicle;
s2, compressing the specific file to be downloaded by using the cloud agent so as to meet the requirement of downloading time;
and S3, the vehicle downloads the compressed specific file from the cloud agent through the road side unit RSU.
As a further aspect of the present invention, the process of the cloud agent sending the download request of the specific file to the vehicle according to the daily driving route of the tagged vehicle and the preference in step S1 is as follows:
s21: when the marked vehicle enters the coverage range of the road side unit RSU, the road side unit RSU reports the related information of the marked vehicle to the cloud agent;
s22: the cloud agent selectively pushes related resource information to vehicles in the coverage range of the RSU according to the marked vehicle historical data including daily driving routes and preferences, and establishes a resource list to be stored in the RSU locally;
s23: the user selects to download a specific file according to personal requirements.
As a further scheme of the present invention, the process of compressing the specific file to be downloaded by using the cloud agent in step S2 is as follows:
s31: after receiving the download confirmation information of the vehicle, the RSU reports the download confirmation information to the cloud agent;
s32: and the cloud agent calculates and selects a proper compression ratio according to the type of the downloaded file to ensure that the redundancy is lowest on the premise that the file meets the completeness and the usability, and compresses the file to ensure that the downloading task is completed before the user tolerates time and drives away from the RSU.
As a further aspect of the present invention, the process of downloading the compressed specific file from the road side unit RSU by the vehicle in step S3 is as follows:
s41: the cloud agent sends the compressed specific file to the road side unit RSU, and the road side unit RSU receives and stores the file;
s42: and the RSU sends the file to a specific vehicle according to the received vehicle confirmation downloading information.
The invention has the beneficial effects that: the method is different from the traditional Internet of vehicles large file downloading method, the characteristics of strong cloud agent computing capability, high processing speed and the like are utilized, and the road side unit RSU is used for compressing and downloading the large file, so that the completeness of file downloading is ensured, and the performance of the system is improved; the method and the device solve the problems that the downloading time of the large file in the Internet of vehicles is long and the data integrity is difficult to guarantee, and the Internet of vehicles is combined with cloud computing, and the large file is compressed and downloaded by using the cloud agent, so that the problem of resource occupation in the communication process is relieved, the user waiting time is reduced, and the utilization rate of network resources and the user satisfaction are improved.
Drawings
FIG. 1 is a schematic diagram of downloading a large file by using a cloud of a vehicle networking in an embodiment of the present invention;
fig. 2 is a flow chart implemented in an embodiment of the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
Example 1
As shown in fig. 2, a method for compressing and downloading a cloud large file in an internet of vehicles includes the following steps:
s1, the marked vehicle enters the coverage area of a certain RSU, and the cloud agent sends a downloading request of a relevant matching file to the vehicle according to the daily driving route and preference of the marked vehicle;
s2, compressing the specific file to be downloaded by using the cloud agent so as to meet the requirement of downloading time;
and S3, the vehicle downloads the compressed specific file from the cloud agent through the road side unit RSU.
In this embodiment, as shown in fig. 1, when a tagged vehicle enters the coverage of the RSU, the RSU reports the relevant information of the tagged vehicle to the cloud agent; the cloud agent selectively pushes related resource information to vehicles in the coverage range of the RSU according to the marked vehicle historical data, such as daily driving routes and preferences, and establishes a resource list to be stored in the RSU locally; the user then selects a particular file to download based on personal requirements.
In this embodiment, in step S2, the process of compressing the specific file to be downloaded by using the cloud agent is as follows:
s31: after receiving the download confirmation information of the vehicle, the RSU reports the download confirmation information to the cloud agent;
s32: and the cloud agent calculates and selects a proper compression ratio according to the type of the downloaded file to ensure that the redundancy is lowest on the premise that the file meets the completeness and the usability, and compresses the file to ensure that the downloading task is completed before the user tolerates time and drives away from the RSU.
In this embodiment, the process of downloading the compressed specific file from the road side unit RSU by the vehicle in step S3 is as follows:
s41: the cloud agent sends the compressed specific file to the road side unit RSU, and the road side unit RSU receives and stores the file;
s42: and the RSU sends the file to a specific vehicle according to the received vehicle confirmation downloading information.
The foregoing is a preferred embodiment of the present invention, and it will be apparent to those skilled in the art that variations, modifications, substitutions and alterations can be made in the embodiment without departing from the principles and spirit of the invention.
Claims (3)
1. A method for compressing and downloading a cloud large file in the Internet of vehicles is characterized by comprising the following steps:
s1, the marked vehicle enters the coverage area of a certain RSU, and the cloud agent sends a downloading request of a relevant matching file to the vehicle according to the daily driving route and preference of the marked vehicle;
s2, compressing the specific file to be downloaded by using the cloud agent so as to meet the requirement of downloading time;
s3, the vehicle downloads the compressed specific file from the cloud agent through the road side unit RSU;
in step S2, the process of compressing the specific file to be downloaded by using the cloud agent is as follows:
s31: after receiving the download confirmation information of the vehicle, the RSU reports the download confirmation information to the cloud agent;
s32: and the cloud agent calculates and selects a proper compression ratio according to the type of the downloaded file to ensure that the redundancy is lowest on the premise that the file meets the completeness and the usability, and compresses the file to ensure that the downloading task is completed before the user tolerates time and drives away from the RSU.
2. The internet-of-vehicles cloud big file compression downloading method according to claim 1, wherein the process of the cloud agent sending the downloading request of the specific file to the vehicle according to the daily driving route of the marked vehicle and the preference in the step S1 is as follows:
s21: when the marked vehicle enters the coverage range of the road side unit RSU, the road side unit RSU reports the related information of the marked vehicle to the cloud agent;
s22: the cloud agent selectively pushes related resource information to vehicles in the coverage range of the RSU according to the marked vehicle historical data including daily driving routes and preferences, and establishes a resource list to be stored in the RSU locally;
s23: the user selects to download a specific file according to personal requirements.
3. The internet of vehicles cloud big file compression and downloading method of claim 1, wherein the process of downloading the compressed specific file from the road side unit RSU by the vehicle in step S3 is as follows:
s41: the cloud agent sends the compressed specific file to the road side unit RSU, and the road side unit RSU receives and stores the file;
s42: and the RSU sends the file to a specific vehicle according to the received vehicle confirmation downloading information.
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| CN201710912519.0A CN107911404B (en) | 2017-09-29 | 2017-09-29 | Internet of vehicles cloud big file compression and downloading method |
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| CN201710912519.0A CN107911404B (en) | 2017-09-29 | 2017-09-29 | Internet of vehicles cloud big file compression and downloading method |
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| CN110505289B (en) * | 2019-08-07 | 2022-04-26 | Oppo广东移动通信有限公司 | File downloading method and device, computer readable medium and wireless communication equipment |
| CN112528085B (en) * | 2020-12-09 | 2024-06-11 | 中国航空工业集团公司沈阳飞机设计研究所 | Data rapid unloading method based on marking information |
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| CN104767797A (en) * | 2015-03-18 | 2015-07-08 | 广东工业大学 | Distribution storing and downloading method for Internet-of-vehicle fixed hot spot resources |
| CN105391782A (en) * | 2015-11-16 | 2016-03-09 | 上海交通大学 | V2I/V2V Internet-of-things system based on cognitive OFDM and method thereof |
| CN107040569A (en) * | 2015-10-09 | 2017-08-11 | 福特全球技术公司 | Content based on vehicle is shared |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US10554708B2 (en) * | 2015-03-27 | 2020-02-04 | Qualcomm Incorporated | Point-to-multipoint broadcast assisted vehicle-to-X broadcast |
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| CN104767797A (en) * | 2015-03-18 | 2015-07-08 | 广东工业大学 | Distribution storing and downloading method for Internet-of-vehicle fixed hot spot resources |
| CN107040569A (en) * | 2015-10-09 | 2017-08-11 | 福特全球技术公司 | Content based on vehicle is shared |
| CN105391782A (en) * | 2015-11-16 | 2016-03-09 | 上海交通大学 | V2I/V2V Internet-of-things system based on cognitive OFDM and method thereof |
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