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Concurrent operation method for road side unit to process multiple on board units

A technology of roadside unit and vehicle-mounted unit, which is applied in ticketing equipment, instruments, etc., can solve the problems of long transaction time, inability to meet the application requirements of free-flow electronic toll collection of urban roads and bridges, and high work performance and index requirements.

Inactive Publication Date: 2013-07-10
HUAZHONG UNIV OF SCI & TECH +1
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  • Claims
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Problems solved by technology

[0004] At present, the application field of DSRC (Dedicated Short Range Communications, dedicated short-range communication) national standard GB / T20851-2007 "Dedicated Short Range Communications for Electronic Toll Collection" in China's electronic toll collection system is limited to the electronic toll collection of expressways in some provinces and cities. Chip type electronic label, with IC card electronic wallet, adopts on-site consumption mode, although it has many functions, but the transaction time is long, and the speed of the vehicle usually needs to be controlled below 30 km / h, the cost and failure rate are high
According to the actual needs of urban road and bridge electronic toll collection, vehicles are required to be able to realize non-stop toll collection under high-speed traffic, that is, the multi-lane free-flow toll collection mode. RSU is required to be able to handle multiple OBU concurrent situations, and its work performance and indicators are relatively high. The existing domestic technical specifications cannot meet the application requirements of free-flow electronic toll collection on urban roads and bridges

Method used

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  • Concurrent operation method for road side unit to process multiple on board units
  • Concurrent operation method for road side unit to process multiple on board units
  • Concurrent operation method for road side unit to process multiple on board units

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Embodiment Construction

[0021] In the data link layer, in order to meet the needs of urban road and bridge free flow dedicated short-range communication, and better deal with multiple OBU concurrent situations, the present invention adds dedicated window requests and dedicated window allocations on the basis of the original national standard, that is, roadside equipment broadcasting BST (Beacon Service Table, Beacon Service Table) —> Vehicle Device Request Window —> Roadside Device Requests VST (Vehicle Service Table, Vehicle Service Table) —> Vehicle Device Uploads VST.

[0022] The dedicated link establishment mechanism includes the design of dedicated window request and dedicated window allocation, and at the same time, the allocation time window mechanism is added to the MAC control domain, and the sequence control of the downlink frame of the allocated dedicated uplink window.

[0023] The time window management mechanism includes a dedicated uplink window time management mechanism and a public u...

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Abstract

The invention provides a concurrent operation method for a road side unit to process multiple on board units. The method comprises the steps that firstly, the road side unit broadcasts beacon service tables to the multiple on board units, after corresponding on board units receive the beacon service tables, special window requests are sent to the road side unit, the road side unit carries out special window distribution and sends vehicle service table requests to the on board units, and finally the on board units upload the vehicle service tables to the road side unit. According to the concurrent operation method for the road side unit to process the multiple on board units, the road side unit (RSU) has the concurrent processing capacity of dealing with the multiple on board units (OBU) of multiple lanes.

Description

technical field [0001] The invention relates to a technical proposal of a concurrent operation mechanism for processing multiple OBUs by an RSU based on urban road and bridge free-flow electronic tolling in the application field of urban intelligent traffic. Background technique [0002] At present, the urban road and bridge free-flow tolling technology is one of the most advanced road and bridge tolling technologies in the world. It is a fast electronic toll collection system without any toll roadblocks. This kind of charging system is quite mature in some developed countries, but due to the great difference between China's application market and foreign application markets, there will be certain risks in directly using the existing international mature technology; It is still in the research stage and there are no application cases yet. [0003] Electronic Toll Collection (ETC for short) is an automatic toll collection system for roads, bridges and tunnels that is being ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G07B15/06
Inventor 张继峰曾致远王杜荣黎育红房柱杨峰毛政权杨文丽潘沛周光杰
Owner HUAZHONG UNIV OF SCI & TECH
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