A data broadcasting method of Internet of Vehicles based on infectious disease algorithm
A technology of data broadcasting and Internet of Vehicles, applied in the field of Internet of Vehicles data broadcasting based on infectious disease algorithm, can solve the problems of network resource occupation, data packet flooding, fierce competition, etc., to achieve efficient channel resources, efficient utilization, and avoid flooding Effect
Inactive Publication Date: 2020-05-01
BEIHANG UNIV
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However, the pure infectious disease routing algorithm is essentially an unlimited flooding algorithm, which will try all possible paths to send data packets, especially when the traffic density is high, it will occupy a lot of network resources, and the data in the network Packets are flooded and competition is fierce, which leads to increased transmission delay and lower reachability, and it is also difficult to meet the transmission requirements of security-related data packets
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[0021] The present invention will be further described in detail with reference to the accompanying drawings and embodiments.
[0022] The present invention is a method for broadcasting data of the Internet of Vehicles based on an infectious disease algorithm. In a certain area (such as figure 1 Area A shown), vehicles can exchange data through on-board wireless communication equipment, and vehicles can also receive messages broadcast by base stations. The inventive method comprises the following steps ( figure 2 Be the flowchart of the inventive method):
[0023] Step 1: The roadside unit sends the detected vehicle information to the base station in the area, the base station broadcasts the integrated information, and the vehicle receives the information broadcast by the base station. Let the base station broadcast the number of vehicles in the area at time t as N(t), the traffic density as ρ(t), the arrival rate of vehicles entering area A a(t) and the departure rate of v...
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The invention discloses an Internet of vehicles data broadcasting method based on an infectious disease algorithm. In a region A, roadside units send detected vehicle information to a base station in the region; the base station integrates the information and then broadcasts the information; after vehicles receive the information broadcasted by the base station, the vehicles can adaptively adjust own frequencies of sending beacons; when the vehicles are relatively sparse or a data packet permeability is relatively low, the vehicles improve the frequencies of sending the beacons, so the communication connection probabilities among the vehicles is improved, and achievable rates of data packets are improved; when the vehicles are relatively dense or the data packet permeability is relatively high, the vehicles reduce the frequencies of sending the beacons, so the sending of the data packets is reduced, the redundancy of the data packets is avoided in a network, and data packet conflicts are reduced. Through application of the method provided by the invention, the data packets in a vehicle ad hoc network can be effectively prevented from flooding, network resources can be utilized efficiently, the achievable rates of the data packets are improved, and the delay is reduced.
Description
technical field [0001] The method of the invention relates to the technical field of the Internet of Vehicles and the technical field of wireless communication, in particular to a data broadcasting method of the Internet of Vehicles based on an infectious disease algorithm. Background technique [0002] Vehicle ad hoc network is the application of traditional mobile ad hoc network on traffic roads, which can be used to provide traffic safety services and in-vehicle entertainment services. Vehicles exchange safety-related information to realize traffic safety early warning and avoid traffic accidents. Security-related data packets need to be sent to surrounding vehicles in a timely manner, which has high requirements for delay and accessibility. Due to the characteristics of autonomous vehicles, no fixed structure, multi-hop routing, and dynamic changes in network topology caused by high-speed movement of vehicles, the communication connection between vehicles is highly rand...
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IPC IPC(8): H04W28/02H04W84/18H04L29/08
CPCH04L67/12H04W28/021H04W84/18
Inventor 田大新刘超王云鹏周建山郑坤贤朱宇凯李玉洲刘文豪康璐
Owner BEIHANG UNIV