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Dynamically self-adapting vehicle network routing method

A dynamic self-adaptive, vehicle network technology, applied in network topology, electrical components, wireless communication, etc., can solve problems such as connection instability, restricted node movement, and the method of changing data packets, so as to improve the transmission success rate. Effect

Inactive Publication Date: 2014-06-25
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(2) The instability of the connection
(5) Node movement is restricted
The current single routing protocol cannot change its method of transmitting data packets in real time according to road conditions. The present invention is a dynamic adaptive routing method

Method used

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  • Dynamically self-adapting vehicle network routing method
  • Dynamically self-adapting vehicle network routing method

Examples

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Embodiment Construction

[0023] The invention is a routing method for a vehicle network. We divide the routing protocols of conventional vehicle networks into two categories: one is to transmit data packets according to roads, and the other is to transmit data packets regardless of roads. This method is to select different routing protocols under different road conditions. to forward packets.

[0024] Each step of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0025] as attached figure 1 , the dynamic adaptive vehicle network routing method of the present invention comprises the following steps:

[0026] (1) System initialization, vehicles and roadside nodes use historical information data to initialize the network system, the historical information data includes: the average speed of a single road segment, the vehicle arrival rate of a single road segment and the travel time through a single road segment The direct transmission dist...

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Abstract

The invention discloses a dynamically self-adapting vehicle network routing method, wherein, different routing protocols are selected to forward data packets in different road conditions. The dynamically self-adapting vehicle network routing method comprises the steps as follows: firstly, a vehicle and roadside nodes initialize an overall system by utilizing historical data, and historical information comprises vehicle arrival rate, average velocity and time required for passing a road; secondly, the vehicle generates the data packets, and obtains routing information and position information of other vehicles and real-time road information of the current road through a GPS (Global Positioning System) and the roadside nodes; thirdly, the vehicle respectively calculates the transmission success rate expectation and the transmission time delay expectation in current circumstances based on a routing policy routing according to the roads and a routing policy routing without regards to the roads; and fourthly, one of the routing policies is selected to transmit the data packets, and the selected routing policy is adjusted as required. The dynamically self-adapting vehicle network routing method improves the transmission success rate of the routing protocols and the transmission time delay of the data packets, and is better suitable for the vehicle network routing of real environment.

Description

technical field [0001] The invention relates to a vehicle network routing method, in particular to a dynamic self-adaptive vehicle network routing method that selects different routing protocols to transmit data packets under different road conditions. Background technique [0002] As a new type of network, the vehicle network has received widespread attention in recent years, and the frequency bands and standards used for vehicle communication are also being continuously improved. Vehicle ad hoc network is a new type of wireless network composed of vehicles as mobile nodes, which can realize multi-hop wireless communication between vehicles and between vehicles and roadside infrastructure. Each vehicle sends and receives data through the wireless communication equipment installed on the vehicle. Generally, the communication range of a single hop is within a few hundred meters. As a wireless ad hoc network, each vehicle is the route of the entire network. Node, so it can re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W40/02H04W84/18
Inventor 朱燕民邱永康
Owner SHANGHAI JIAOTONG UNIV
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