Vehicle self-organization network for LED communication
A self-organizing network and vehicle technology, applied in the field of vehicle self-organizing network, can solve the problems of unstable wireless channel quality and rapid network topology changes, and achieve the effect of reliable LED communication, high communication rate and high sensitivity
Active Publication Date: 2015-04-22
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology
The unstable wireless channel quality and rapid network topology changes have become important reasons restricting the development of vehicle self-organizing networks.
Method used
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specific Embodiment
[0070] Law enforcement officers want to track down the vehicle with the license plate number 12345, and the law enforcement officers upload the information to the Internet. The mobile relay node in the vehicle self-organizing network has the status information (including the license plate number) of all vehicles in the network, so the information on the license plate number match. If there is a vehicle matching the license plate number 12345, the relay node uploads its location coordinates to the Internet, and law enforcement officers obtain the coordinates through the Internet to search. It provides a technical means for searching for special vehicles.
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The invention relates to a vehicle self-organization network for LED communication and belongs to the technical field of automobiles. The vehicle self-organization network consists of nodes containing vehicle-mounted LED communication units, wherein the nodes comprise a vehicle terminal node and a mobile relay node; the vehicle terminal node communicates with the mobile relay node in the self-organization network by virtue of the vehicle-mounted LED communication units; the mobile relay node communicates with mobile relay nodes in other self-organization networks by virtue of the vehicle-mounted LED communication units; and the vehicle self-organization network also comprises a fixed access point, the vehicle terminal node can communicate with the fixed access point by virtue of the LED communication units, and all the LED communication units in the network perform communication by adopting a phase shift MIMO-OFDM (Multiple Input Multiple Output-Orthogonal Frequency Division Multiplexing) LED communication system. The vehicle self-organization network for LED communication, provided by the invention, ensures that each vehicle is in a 'car in the net' state, and has a function of resisting a multipath effect and intersymbol interference, so that the LED communication among vehicles is realized reliably.
Description
technical field [0001] The invention belongs to the technical field of automobiles and relates to a vehicle ad hoc network for LED communication. Background technique [0002] LED has the advantages of low power consumption, long life, small size, and no pollution, and is regarded as the fourth generation of energy-saving and environment-friendly products. LED-based visible light communication has the advantages of high communication rate, large capacity, high sensitivity, and no electromagnetic interference. It is a new wireless optical communication technology. It can be used in areas sensitive to electromagnetic interference, such as hospitals, airplanes, and high-speed rail, and can also be used as a wireless broadband access to solve the "last mile" problem. [0003] Vehicle ad hoc network (VANET, Vehicular Ad Hoc Network) is the application of traditional mobile ad hoc network (MANET, Mobile Ad Hoc Network) on traffic roads, and is a special mobile ad hoc network. Th...
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IPC IPC(8): H04L29/08
CPCH04L67/12
Inventor 陈勇尹辉刘焕淋李逸超
Owner CHONGQING UNIV OF POSTS & TELECOMM
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