Method, device and system for acquiring resources

A technology for obtaining resources and equipment, which is applied in the field of obtaining resources, can solve the problems of reducing the success rate of resource search and the stability of resource data transmission, reducing the success rate of resource search and the reliability of resource data transmission, etc., so as to improve efficiency and Reliability, improve user experience, and solve the effect of heavy network load

Inactive Publication Date: 2013-03-27
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Since the P2P topology established on the vehicular ad hoc network has a great correlation with the vehicular ad hoc network topology, in the vehicular environment, due to the continuous change of the position of the vehicle, the P2P topology mapped on the vehicular ad hoc network will change. Changes, thereby reducing the success rate of resource search and the reliability of resource data transmission. In addition, due to the limitation of the signal coverage of the 802.11p protocol, the topology of the vehicle ad hoc network changes frequently, which affects the P2P topology. The stability of storage will also reduce the success rate of resource search and the stability of resource data transmission

Method used

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  • Method, device and system for acquiring resources
  • Method, device and system for acquiring resources
  • Method, device and system for acquiring resources

Examples

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Embodiment 1

[0053] The embodiment of the present invention provides a method for obtaining resources, see figure 1 , the method flow includes:

[0054] 101: Find the device storing the resource to be acquired according to the mapping relationship between the pre-built resource and the device storing the resource;

[0055] Further, the pre-built cellular network has a mapping relationship between resources and devices storing resources;

[0056] Find the device that stores the resource to be acquired according to the mapping relationship between the pre-built resource and the device that stores the resource, including but not limited to:

[0057] Query the mapping relationship between the resource and the device storing the resource through the pre-built cellular network, and search for the device storing the resource to be acquired according to the mapping relationship.

[0058] 102: Calculate the first available bandwidth corresponding to the network path of the pre-built cellular netw...

Embodiment 2

[0065] This embodiment provides a method for obtaining resources. Combining the content of the first embodiment above, this embodiment is based on figure 2 The network architecture shown is taken as an example for illustration. figure 2 Among them, the vehicle constructs VANET (Vehicular Ad-hocNETwork, vehicle self-organizing network) at the bottom layer through the WAVE interface to carry out V2V (Vehicle-to-Vehicle, vehicle and vehicle) / V2I (Vehicle-to-Infrastructure, the basis of vehicle and roadside) Facilities) communication, build Chord (classic string theory) coverage on the upper layer of cellular network infrastructure through 4G (3G) interface. After the vehicle joins the network system, some video clips are stored according to the Chord algorithm, and the stored video clips are always carried in any driving situation. Combining the stored video segment with the stored video information, the vehicle is mapped through the Chord principle, and the Chord ring is buil...

Embodiment 3

[0091] see Figure 4 , the embodiment of the present invention provides a device 30 for acquiring resources, and the device 30 includes:

[0092] A search module 301, configured to search for a device that stores the resource to be acquired according to the mapping relationship between the pre-built resource and the device that stores the resource;

[0093] The first calculation module 302 is configured to calculate the first available bandwidth corresponding to the network path of the pre-built cellular network;

[0094] The second calculation module 303 is used to calculate the second available bandwidth corresponding to the network path of the pre-built vehicular ad hoc network;

[0095] A selection module 304, configured to select a transmission resource from a network path of a cellular network and a network path of a vehicular ad hoc network according to the first available bandwidth calculated by the first calculation module 302 and the second available bandwidth calcu...

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Abstract

The invention discloses a method, a device and a system for acquiring resources and belongs to the field of communications. The system comprises a cellular network, a vehicle-mounted self-organizing network, the device for acquiring resources and a device for storing resources. The device for acquiring resources is used for searching a device for storing resources to be acquired according to a mapping relation between resources and the device for storing resources, which is pre-constructed; calculating first available bandwidth corresponding to a network path of the cellular network, and calculating second available bandwidth corresponding to a network path of the vehicle-mounted self-organizing network; and selecting a network path of for transmitting resource data in the network path of the cellular network and the network path of the vehicle-mounted self-organizing network according to the first available bandwidth and the second available bandwidth, and acquiring resource data from searched resource data according to the selected network path. Resource location on the cellular network under a layered network framework is achieved, and accordingly success rate of searching resources is increased; and resource transmission is achieved by dynamically selecting the network path from the multiple network paths, and accordingly stability of resource transmission is increased.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method, device and system for acquiring resources. Background technique [0002] Many cities around the world are currently deploying terrestrial broadcast mobile in-vehicle TVs on mobile devices such as vehicles. In order to provide richer video resources, resource data can be shared among mobile devices such as vehicles. Therefore, how to obtain resources has become the key to providing mobile TV services. [0003] In the prior art, in order to obtain resources, a P2P streaming media solution under the vehicle network environment is adopted. This method directly establishes an application-layer P2P overlay network on the vehicle ad hoc network, that is, on the vehicle ad hoc network, devices based on resources and storage resources The mapping relationship among them builds a P2P topology structure, and then searches for devices that store resources according to the establi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08
Inventor 许长桥张宏科关建峰贾世杰曹远龙赵付涛王目谢晓君
Owner BEIJING UNIV OF POSTS & TELECOMM
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