ETC lane anti-jamming method based on multi-beam antenna

A multi-beam antenna, anti-jamming technology, applied in the direction of instruments, ticketing equipment, etc., can solve the problems of no transaction, unable to carry out concurrent transactions, unable to pass, etc., to improve the speed of lane traffic, avoid vehicle following interference and neighbors. The effect of channel interference

Active Publication Date: 2013-08-28
北京速通科技有限公司
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Problems solved by technology

[0009] Concurrent transactions cannot be carried out. It is possible that the OBU signal of the vehicle behind is stronger and the transaction is carried out first, resulting in no transaction for the vehicle in front and impassability

Method used

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  • ETC lane anti-jamming method based on multi-beam antenna
  • ETC lane anti-jamming method based on multi-beam antenna
  • ETC lane anti-jamming method based on multi-beam antenna

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Embodiment Construction

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0028] The inventor considers that the existing DSRC protocol does not support concurrent communication means that in the same wireless channel, the RSU cannot perform DSRC communication with multiple OBUs at the same time to complete the ETC transaction. Because the GB / T20851-2007 series ETC national standard is a time division system (TDMA: Time Division Multiple Access, time division multiple access), the communication protocol level does not support simultaneous communication between RSU and multiple OBUs; code division multiplexing technology is also not possible;...

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Abstract

The invention discloses an ETC lane anti-jamming method based on a multi-beam antenna. The ETC lane anti-jamming method comprises the steps that signal and position detection is carried out through the multi-beam antenna on vehicle-mounted electronic tags in an antenna communication area of a lane where the multi-beam antenna exists; when the multi-beam antenna detects that the vehicle-mounted electronic tags exist in the communication area, an orientation downlink beam is emitted to each vehicle-mounted electronic tag, each downlink beam forms an independent and relatively small communication subdomain, and concurrent communication of the downlink beams with the vehicle-mounted electronic tags is achieved through a space division multiplexing mode. According to the ETC lane anti-jamming method based on the multi-beam antenna, beam forming technology is utilized, effective communication areas for ETC trading can be regulated, an OBU accurate position of an ETC lane is detected in real time, the orientation downlink beam is regulated and emitted according to positions of the electronic tags, the concurrent communication of the downlink beams with the vehicle-mounted electronic tags is achieved through the space division multiplexing mode, and therefore the lane passage speed is improved, and meanwhile vehicles on the ETC lane are prevented from car following jamming and adjacent channel interference.

Description

technical field [0001] The present invention relates to the technical field of ITS (Intelligent Transport System, Intelligent Transportation System), in particular to a method for anti-jamming ETC lanes based on multi-beam antennas. Background technique [0002] With the continuous increase in the mileage of expressways and the continuous improvement of toll collection technology, many provinces and cities in my country have built expressway ETC (Electronic Toll Collection, Electronic Toll Collection) systems. The existing expressway ETC system adopts a single-lane mode. Vehicles equipped with on-board electronic tags need to enter the designated lane and pass through the ETC lane at a low speed (currently, the speed limit of the expressway ETC lane is 20km / h); for illegal vehicles entering the ETC lane , the lane railings are automatically intercepted and processed by manual intervention. [0003] The ETC lane system mainly consists of lane computers, lane antennas and rel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G07B15/06
Inventor 张北海李全发薛金银尤鑫张为民吴佳胡宾范士明李世红
Owner 北京速通科技有限公司
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