scholarly journals Multiobjective Differential Evolution with Discrete Elite Guide in Internet of Vehicles Roadside Unit Deployment

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Feng Wang ◽  
Chenle Wang ◽  
Kan Wang ◽  
Qiaoyong Jiang ◽  
Bin Wang ◽  
...  
Keyword(s):  
Differential Evolution ◽  
Ad Hoc ◽  
Sigmoid Function ◽  
Individual Values ◽  
Safe Driving ◽  
Internet Of Vehicles ◽  
Good Convergence ◽  
Roadside Unit ◽  
Vehicle To Infrastructure ◽  
Vehicle To Infrastructure Communication

In a vehicular ad hoc network (VANET), roadside units (RSUs) are installed at roadside and intersections to process vehicle-to-infrastructure communication, collect and analyse intelligent vehicle traffic data, send information to vehicles, and achieve early warning of safe driving of vehicles. Owning to the high cost of implementing and maintaining RSUs, it is of vital importance to determine where and how many RSUs to deploy. Optimal RSU deployment requires both a small number of RSUs and the maximum coverage of vehicle running process, which constitutes a conflicting multiobjective problem. Nevertheless, existing works do not explicitly utilize multiobjective algorithm to solve the RSU deployment problem. Therefore, a multiobjective differential evolution approach is proposed in this work to solve the problem. Firstly, to conquer the complexity of urban road RSU deployment, the static model is established. Secondly, in the proposed multiobjective differential evolution with discrete elitist guide (MODE-deg), the sigmoid function is applied to discrete individual values. Finally, elitist individuals are selected based on crowding distance ranking and nondominated ranking to generate new individuals, which further improve the convergence speed and population performance. Experimental results show that MODE-deg can generate the optimal nondominant solution set with good convergence and diversity, in contrast to other multiobjective evolutionary algorithms in five test functions of ZDT.

scholarly journals A Priority-Based Multichannel Mac to Support the Non-Safety Applications in SCH Interval at RSU in V2I Communication

2018 ◽  
Vol 19 (4) ◽  
pp. 269-283 ◽  
Author(s):  
Duc Tran Le ◽  
Tri Gia Nguyen ◽  
Olga Simonina ◽  
Mikhail Buinevich ◽  
Andrei Vladyko
Keyword(s):  
The Novel ◽  
Service Channel ◽  
Roadside Unit ◽  
Vehicle To Infrastructure ◽  
A Priority ◽  
Multichannel Mac ◽  
Safety Applications ◽  
The Mathematical Model ◽  
Vehicle To Infrastructure Communication

Abstract The transmission of safety applications in VANET is clearly the top concern. However, the non-safety applications, which improve the quality of experience, as well as the efficiency of the traffic, also need to be paid more attention. In VANET, the safety applications are transmitted in control channel interval and the non-safety applications can be transmitted only in service channel interval. In this paper, we propose a priority-based multichannel MAC to support the non-safety applications in service channel interval in Vehicle-to-Infrastructure communication with the presence of roadside unit. The novel MAC also allocates service channel according to the priority and divides the vehicles, which have the same required service channel, into four priority groups to enhance the EDCA mechanism. We use the mathematical model and the simulation for evaluating the performance under the influence of velocity with a different number of vehicles in the network.

Vehicle-to-Infrastructure Communication

2018 ◽  
pp. 53-77 ◽  
Author(s):  
Rodolfo I. Meneguette ◽  
Robson E. De Grande ◽  
Antonio A. F. Loureiro
Keyword(s):  
Vehicle To Infrastructure ◽  
Vehicle To Infrastructure Communication

scholarly journals Hybrid power control and contention window adaptation for channel congestion problem in internet of vehicles network

2022 ◽  
Vol 12 (1) ◽  
pp. 497
Author(s):  
Hayder M. Amer ◽  
Ethar Abduljabbar Hadi ◽  
Lamyaa Ghaleb Shihab ◽  
Hawraa H. Al Mohammed ◽  
Mohammed J. Khami
Keyword(s):  
Ad Hoc Networks ◽  
Power Control ◽  
Congestion Control ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Wireless Channel ◽  
Contention Window ◽  
Internet Of Vehicles ◽  
Hybrid Power ◽  
Hoc Networks

Technology such as vehicular ad hoc networks can be used to enhance the convenience and safety of passenger and drivers. The vehicular ad hoc networks safety applications suffer from performance degradation due to channel congestion in high-density situations. In order to improve vehicular ad hoc networks reliability, performance, and safety, wireless channel congestion should be examined. Features of vehicular networks such as high transmission frequency, fast topology change, high mobility, high disconnection make the congestion control is a challenging task. In this paper, a new congestion control approach is proposed based on the concept of hybrid power control and contention window to ensure a reliable and safe communications architecture within the internet of vehicles network. The proposed approach performance is investigated using an urban scenario. Simulation results show that the network performance has been enhanced by using the hybrid developed strategy in terms of received messages, delay time, messages loss, data collision and congestion ratio.

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