A data transmission route selection method based on vehicle density distribution

A technology of vehicle density and route selection, which is applied to location-based services, transmission systems, electrical components, etc., can solve the problems of increased transmission delay, increased transmission delay, and reduced throughput.

Active Publication Date: 2018-05-08
NORTHWEST UNIV
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  • Abstract
  • Description
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Problems solved by technology

However, with the increase of vehicle density, the collision of wireless network becomes more and more serious, and the throughput continues to decrease, which will inevitably lead to the continuous increase of transmission delay.
Based on the assumption of VADD, a large number of data packets will be transmitted to the already congested network, causing network congestion and increasing transmission delay.

Method used

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  • A data transmission route selection method based on vehicle density distribution
  • A data transmission route selection method based on vehicle density distribution
  • A data transmission route selection method based on vehicle density distribution

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Embodiment Construction

[0072] In urban environments, vehicle-to-vehicle data communication is increasingly required. How to enable the data requester to obtain the required data with less transmission delay is the core content of the solution of the present invention, that is, to select a low-delay path through the design method of the present invention among multiple candidate data transmission paths The data transmission path reduces the data transmission delay. In the following implementation description, the method and device of the present invention are applied to the following network model:

[0073] 1. All vehicles (nodes) are distributed in the urban traffic network (such as figure 1 shown), the trajectory of the node follows the urban traffic rules;

[0074] 2. Each node carries an electronic map display device, and the electronic map can obtain street traffic conditions, vehicle speed, traffic light scheduling status and recommended driving route functions;

[0075] 3. All nodes have a ...

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Abstract

The invention discloses a method for selecting a data transmission path based on vehicle density distribution, which specifically includes the following steps: acquiring location information of a source node and a destination node, selecting a transmission path and forwarding data packets in a street. The present invention avoids packet loss and retransmission caused by data transmission path failure caused by unnecessary routing holes, and reduces network load; it can not only reflect the data transmission time delay in the case of sparse vehicles, but also reflect the situation of vehicle congestion (common ) data transmission delay in the scenario, this model is suitable for more common scenarios.

Description

technical field [0001] The invention belongs to the application field of mobile wireless networks, and in particular relates to a data transmission path selection method based on vehicle density distribution. Background technique [0002] As an extension of the Internet of Things in the field of intelligent transportation, the Internet of Vehicles has attracted extensive attention from industry and academia in recent years. As more and more vehicles join the road traffic network and the cost of wireless communication decreases, more useful information can be fully exchanged between vehicles, and drivers can obtain higher safety and comfort in the process of driving vehicles. These are embodied in: emergency avoidance of traffic distress, effective dissemination of special vehicle warning information, driving route optimization, acquisition of road condition information, directional positioning broadcast of business advertisements on the road and remote acquisition of parking...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/02H04W40/12H04W40/20H04L29/08
CPCH04L67/12H04W4/02H04W40/12H04W40/20H04L67/52
Inventor 徐丹龚晓庆房鼎益陈晓江王安文郭军汤战勇崔文王亮刘东
Owner NORTHWEST UNIV
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