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Multi-channel concurrent image transmission method based on IEEE802.11p protocol

A transmission method and multi-channel technology, applied in the field of real-time transmission of image information, can solve problems such as no related research, and achieve the effect of avoiding congestion, ensuring real-time application requirements, and improving real-time application service quality

Active Publication Date: 2015-12-09
DALIAN UNIV OF TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

For CCH and SCH multi-channel concurrent transmission of image information, there is no relevant research so far

Method used

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  • Multi-channel concurrent image transmission method based on IEEE802.11p protocol
  • Multi-channel concurrent image transmission method based on IEEE802.11p protocol
  • Multi-channel concurrent image transmission method based on IEEE802.11p protocol

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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] see figure 1 , introducing the sending process of the present invention for a multi-channel concurrent image transmission method based on the IEEE802.11p protocol, that is, decomposing a frame of image into 8 sets of data and 1 set of file header data, and encapsulating them into 9 pieces according to the IEEE802.11p protocol format Network data packets are sent sequentially in the order of CCH, SCH1, ..., SCH6 channels.

[0024] Referring to Fig. 2, in combination with the following specific operation steps of an image multi-channel concurrent transmission method based on the IEEE802.11p protocol of the present invention:

[0025] Step 1 Image preprocessing

[0026] In addition to the header information in each frame of image information, the content of ...

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Abstract

The invention relates to a multi-channel concurrent image transmission method based on an IEEE802.11p protocol, belonging to the technical field of real-time transmission of image information. The multi-channel concurrent image transmission method comprises the following steps: decomposing image data in each frame to be transmitted into 9 sets of data at first, packaging the 9 sets of data to form 9 network communication messages, and sequentially transmitting the 9 network communication messages according to one original CCH (Control Channel) and six original SCHs (Synchronous Channels) of the IEEE802.11p protocol in a period polling mode. Therefore, the original single-channel transmission of the image information is converted into CCH and SCH multi-channel cooperative concurrent transmission, so that burden is greatly reduced; simultaneously, real-time application requirements of the image information are also ensured; compared with the single-channel transmission, the transmission speed of the multi-channel concurrent transmission method is increased by 3 times; the vulnerability that system messages or other communication messages facing to safety-critical applications are congested while being transmitted by directly utilizing the CCH is avoided; and the service quality of other real-time applications facing to the safety-critical applications is improved.

Description

technical field [0001] The invention relates to an image multi-channel concurrent transmission method based on the IEEE802.11p protocol, which belongs to the technical field of real-time transmission of image information. Background technique [0002] The IEEE802.11p protocol divides a total of 75MHz spectrum in the 5.850GHz~5.925GHz frequency band for the application of the Internet of Vehicles, and divides a control channel (ControlChannel, CCH) and 6 service channels (ServiceChannel, SCH) with a spectrum width of 10MHz for different Business wireless communication services. Channels are switched and polled according to a certain cycle (the protocol recommends 100ms). CCH is mainly responsible for the transmission of system communication messages related to channel control in the protocol and communication messages for safety-critical applications with high real-time requirements. SCH is mainly used for communication message transmission of service-type applications with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/06H04N17/00
CPCH04L47/12
Inventor 丁男宋彩霞刘明剑张福新谭国真
Owner DALIAN UNIV OF TECH
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