Routing method based on software-defined vehicle networking

Abstract

The invention discloses a routing method based on software-defined vehicle networking, belonging to the vehicle networking. The method includes the following steps that: 1, a vehicle node periodicallyuploads location information, motion information and neighbor node information to a controller, and the controller generates a global routing table thereby; 2, the vehicle node requests the controller for the routing information to a target node, and the controller sends the routing information to the node according to the request; 3, the vehicle node is connected to the next hop node through a short-range wireless communication technology according to the routing information and transmits data messages; and 4, the abnormal situation is processed in the process of transmitting the message until the target node receives the data message. The invention solves the problem of overhead such as a large number of computing resources required by the nodes when the routing table is being maintained caused by using the location information-based routing method in the Ad-hoc network and by that the mobility of the vehicle nodes in the vehicle networking is high and the topology structure of thenetwork changes rapidly.

Description

technical field [0001] The invention belongs to the technical field of wireless communication and is applied to the Internet of Vehicles. Background technique [0002] At present, there are two structures of the Internet of Vehicles. One is the Internet of Vehicles based on the cellular network. The vehicle is used as an access node in the cellular network and connects to the Internet by accessing the cellular network. Data transmission is performed through the uplink and downlink of the cellular network, that is, when the vehicle node needs to send a data packet, it is transmitted through the uplink of the cellular network, and similarly, data is sent to the vehicle node through the downlink of the cellular network. At present, 4G cellular network is used, and large-scale data transmission will bring relatively high communication costs to users. [0003] The second is the Internet of Vehicles based on short-range wireless network communication technology, mainly vehicle Ad...

AI Technical Summary

Problems solved by technology

Since the Internet of Vehicles is a special network, the mobility of the vehicle nodes in the Internet of Vehicles is high, and the topology of the network changes rapidly. In order to obtain real-time routing information, nodes need to pay a lot of calculations when maintaining the routing table. Resources and other overheads, but the computing resources and storage resources of vehicle nodes have limitations

Secondly, in the traffic jam scenario, in a specific area and time period, there are high density vehicle nodes, and the vehicle node clusters use the flooding strategy to broadcast each other's location information, which may cause broadcast storms

Therefore, the routing method based on location information in the existing vehicle Ad-hoc network is no longer applicable.

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