Communication method of multi-relay cooperative system based on vehicle assistance in parking lot

Abstract

The invention discloses a multi-relay cooperation system based on vehicle assistance in a parking lot and a communication method, and belongs to the field of vehicle networking. According to an established multi-relay cooperation system for parking vehicles in a parking lot, on the basis of a vehicle arrival model and a vehicle expected parking duration model, a probability model of vehicle leaving behaviors are given. In the invention, a segment of two-hop point-to-point communication in the multi-relay cooperation system is selected, the influence of leaving behaviors is introduced, the breakout probability of the communication link is calculated, a control variable method is used to obtain the influence of each parameter in the leaving probability model on the breakout probability, andthe parameter with the greater influence is used as a reference factor in the relay selection of the system, so as to improve the stability of the relay network in the parking lot. The invention proposes the influence of the vehicle leaving behaviors on the network system in the parking lot, so that a theoretical basis and specific performance evaluation are available for applying vehicle parkingto the relaying.

Description

technical field [0001] The invention belongs to the technical field of Internet of Vehicles, and more specifically relates to a communication method based on a vehicle-assisted multi-relay cooperation system in a parking lot. Background technique [0002] As one of the important components of the future smart city, the urban Internet of Vehicles provides services such as information transmission, content cache distribution, and data calculation. In the past, the research objects of the Internet of Vehicles focused more on the network composed of vehicles moving on the road and roadside units. However, with the rapid increase of global vehicles, a large number of vehicles are parked or moving slowly, especially in urban center areas. If these parked vehicles are regarded as a kind of infrastructure, we can use these vehicle CPUs and wireless communication devices to improve the communication quality and computing power of the urban Internet of Vehicles. Using the vehicle's ...

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Problems solved by technology

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides a communication method based on a multi-relay cooperative system assisted by vehicles in the parking lot, thereby solving the problem of The technical problem of inaccurate network performance evaluation caused by the lack of research on the impact of vehicle departure behavior on communication links

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