Method and device for in-vehicle network streaming media prefetching

A vehicle-mounted network and streaming media technology, which is applied in the video application field of the mobile Internet, can solve the problems of reducing the feasibility of the solution, sharing streaming media resources with low efficiency, etc., and achieve high feasibility, accuracy and stability, and the effect of accelerating the download process

Active Publication Date: 2016-05-25
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The solutions in the prior art, based on AP-assisted downloading, require constant interactive messages between APs, and the running route of the vehicle also needs to be obtained in advance. The efficiency of sharing streaming media resources between vehicles is not high, which reduces the feasibility of the solution. sex

Method used

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  • Method and device for in-vehicle network streaming media prefetching
  • Method and device for in-vehicle network streaming media prefetching
  • Method and device for in-vehicle network streaming media prefetching

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Embodiment 1

[0060] Such as figure 1 As shown, it is a flow chart of the vehicle network streaming media prefetching method provided by the embodiment of the present invention, wherein,

[0061] Step 10, the vehicle detects the neighbor vehicles within its wireless signal coverage, and calculates the relative stability between the neighbor vehicles and the vehicle.

[0062] In an urban area with a non-linear route, the vehicles are equipped with GPS receivers and a wireless network interface. The embodiment of the present invention realizes "location awareness" by utilizing a GPS receiver, and each vehicle V i The geographic location of each neighbor vehicle in the immediate neighbor region (INR) can be obtained. On-board wireless network interface supports vehicle V i The transmission of various data and the interaction of information with its neighbor vehicles realize V2V communication. Not only can realize the transmission of streaming video data, but also can make V i Get status i...

Embodiment 2

[0115] Such as image 3 As shown, the embodiment of the present invention provides a vehicle-mounted network streaming media prefetching device, which includes a detection unit 100, a stability calculation unit 200, a request unit 300 and a prefetch sending unit 400, specifically as follows:

[0116] The detection unit 100 is configured to detect neighboring vehicles within the coverage range of the vehicle's wireless signal.

[0117] The stability calculation unit 200 is used to calculate the relative stability between the neighbor vehicle and the vehicle.

[0118] The requesting unit 300 is configured to request prefetching of video content from neighboring vehicles with high relative stability.

[0119] The prefetch sending unit 400 is used to prefetch video content and send it to the vehicle.

[0120] In particular, the prefetch sending unit 400 here actually works according to the request when the device is a neighbor vehicle and is requested to prefetch video content. ...

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Abstract

The invention discloses a vehicle-mounted network stream media prefetching method and relates to the field of video application of a mobile Internet. The method comprises the steps that a vehicle detects a neighboring vehicle in a wireless signal coverage range and calculates relative stability of the neighboring vehicle and the vehicle; the vehicle applies for prefetching a video content to the neighboring vehicle with relatively high stability; and the neighboring vehicle prefetches the video content and sends the video content to the vehicle. By the method, the efficiency of sharing stream media resources between the vehicles can be improved, and extremely high feasibility is realized.

Description

technical field [0001] The invention relates to the video application field of the mobile Internet, in particular to a method and device for prefetching vehicle-mounted network streaming media. Background technique [0002] With the development of wireless vehicular network technology, some new applications have been deployed in vehicular networks. 802.11p can provide the high bandwidth needed to play streaming video, so as to realize the streaming media application under the vehicle network. Mobile vehicles usually rely on the adhoc (point-to-point) method for vehicle-to-vehicle (V2V) communication, so as to realize resource information sharing and mutual cooperation, which is conducive to the deployment of large-scale vehicle streaming media systems. However, the inherent instability of wireless channels and the rapid movement of vehicles will have a huge impact on the smooth playback of streaming media. Secondly, for the download of large-capacity files such as video, o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/08H04L29/06
Inventor 许长桥张宏科关建峰贾世杰郑寅杰王目
Owner BEIJING UNIV OF POSTS & TELECOMM
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