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Road network information collection method in the absence of rsu in vehicle ad hoc network

A vehicle-mounted self-organization and road network information technology, which is applied in vehicle wireless communication services, road vehicle traffic control systems, vehicle components, etc., can solve the problems of being easily affected by external factors such as weather and a large amount of public investment, and achieve reduction The effect of data transmission delay, making up for the lack of RSU, and high security

Active Publication Date: 2021-11-09
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the roadside unit (RSU) is a fixed facility installed on the roadside, which requires a lot of public investment and is easily affected by external factors such as weather.

Method used

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  • Road network information collection method in the absence of rsu in vehicle ad hoc network
  • Road network information collection method in the absence of rsu in vehicle ad hoc network
  • Road network information collection method in the absence of rsu in vehicle ad hoc network

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these examples are only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0015] Embodiments of the present invention relate to a method for collecting road network information in a scenario where a vehicle-mounted ad hoc network RSU is missing. RSUs are installed at some intersections in the road network, and the communication radius of the RSUs is equal to half the length of the road segment. The vehicles are all equipped with GPS and an on-board unit (OBU). Vehicle information (number of adjacent ...

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Abstract

The invention relates to a road network information collection method in the absence of an RSU in a vehicle-mounted self-organizing network. If a vehicle node is not within the communication range of the RSU, it is judged which of the two intersections in the road section is closer to the vehicle, and the closer intersection is found. The relay node closest to the vehicle on the network transmits the data packet to the relay node, and then the relay node transmits it to the upper layer relay node, and transmits the data packet to the Sink node through multiple hops. The invention can effectively collect road network information, and can also reduce data transmission time delay.

Description

technical field [0001] The invention relates to the technical field of traffic road network information collection, in particular to a road network information collection method in the scenario where the vehicle-mounted self-organizing network RSU is missing. Background technique [0002] In recent years, the number of vehicles in the urban road network has increased, and the total number of vehicles in some parts of the world has grown faster than the population growth rate, causing many traffic problems. Real-time and effective route planning can avoid many traffic problems and bring convenience to people's travel. Effective route planning requires global real-time traffic information collection. At this stage, the use of in-vehicle organizational networks to collect road condition information on the road, equip vehicles with on-board units, and set up roadside units (RSUs) on the roadside has become a popular research direction. [0003] In vehicular ad hoc networks, fix...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/40H04W40/22H04L29/08G08G1/01
CPCG08G1/012H04L67/12H04W40/22H04W4/40
Inventor 徐梦然李德敏廖书亚胡星星汤孝阳张光林
Owner DONGHUA UNIV