Showing papers by "Rituparna Chaki published in 2019"

Dynamic Scheduling of Traffic Signal (DSTS) Management in Urban Area Network

Abstract: Nowadays vehicular ad hoc network (VANET) is a promising area of research. One of the aspects of this area is traffic congestion control. Due to the limited capacity of road networks, road traffic congestions are becoming a vital problem in most of the metropolitan cities or large cities throughout the world. That creates the chances of casualties and other types of losses related to time, fuel, finance etc. Congestion also causes a considerable amount of pollution. In this paper, we concentrate on traffic light scheduling in the intersection or junction point of road network for congestion control. We propose an approach to optimize the timing of traffic light dynamically by using scheduling algorithm to reduce the congestion in various junction points in urban area network. The proposed mechanism is used for connected intersection system where every objects and traffic lights will be connected with each other and can share information. We use V2I connectivity system via road side unit (RSU) for our methodology. The Traffic Management controller (TMC) is able to collect the traffic related information of an intersection from RSU. Several researchers worked on this problem. But the performance of the proposed method is simulated and the results show that the proposed method performing better in terms of queue length and the waiting time of vehicle in intersection area with respect to other methodologies.

SBRPV: Security Based Routing Protocol for Vehicular Ad hoc Networks

Abstract: Security and privacy are one of the most challenging issues related to the deployment of the Vehicular Ad hoc Networks. Different security proposals have been introduced to address the security of the data those are reliant on the centralized architecture based solutions along with the popular hardware based security techniques. In this proposal the existing state-of-the-art diverse security based solutions have analyzed which leads to the research gap analysis. Authors have presented new secure certificate based scheme to address several obtainable problems. We have proposed a hierarchical architecture for VANET. This proposal deals with the certificate based authentication mechanism which is executed on user request. The unique message identifier technique has taken a pivot role for avoiding the message deception. The proposed SBRPV technique is used to accomplish privacy and traceability, besides, satisfying elementary security requirements.

A study of Resource Optimization for Nurse Scheduling Problem

Abstract: Staff scheduling as per requirements and availability has been a major concern in healthcare systems for long time. This paper focuses on the specific researches targeting the problem of allocating nurses to patients in an effective manner. Most of the existing solutions are guided by various constraints concerning nurses and patients. We surveyed a lot of researched works in this paper in the domain of Nurse Scheduling Problem (NSP). It is a well researched classical scheduling problem in the domain of operation research. In literature, NSP were solved using various methods like integer programming, constraint programming, metaheuristic methods to mitigate the conflicts in scheduling of nurses. The objectives of the researchers were to maximize the fairness of the schedule, to reduce the cost, minimize the constraints, etc. We present a comparative analysis between various techniques by using Gurobi optimizer in Python 3.7 in terms of their objective function and time complexity. A case study has also been presented for the performance analysis. We have studied techniques based on bee colony optimization, simulated annealing, and memetic algorithm. The results are validated using a statistical analyzer. In future this may help to build more optimized schedules in this field of NSP.

Cluster Based Framework for Alleviating Buffer Based Congestion for Wireless Sensor Network

Abstract: In wireless sensor networks, event based applications prone to traffic congestion and unforeseen event detection produce an unremitting generation of traffic throughout the network. The congestion control procedure is used to monitor the process of adapting the total amount of data and concerns to control the network traffic levels to an acceptable value. The performance control mechanism can be conceded through robust congestion control techniques to uphold the operational networks under different conditions. Congestion in sensor networks has to be controlled to achieve high energy efficiency, to prolong the life of the system, improve equity, the quality of service in terms of throughput, packet loss and delay. The information gleaned from an extensive review is shared to reinforce the knowledge base to design a scalable distributed cluster based framework for alleviating buffer based congestion in WSNs and evenly dispense the energy usage among all nodes within the networks. The results show that the proposed technique is simple, efficient and capable of successful dealing with congestion in WSN while preserving the performance characteristics of the network.

Disaster Management System Using Vehicular Ad Hoc Networks.

Abstract: The progress and improvements of distributed networks have played a decisive role in enabling researchers to consider new solutions for various VANET applications such as transportation, road safety, driving assistance, disaster management system, and lots more. Disaster response and management has enabled transport and communications to play an imperative role in dipping loss of life, economic cost, and disruption. VANETs can be measured as a rift of distributed networks. Vehicular ad hoc networks have been implemented as an automated system, and communication has been addressed through vehicular nodes. Since the last two decades, the number of disasters on the side of the road has evidently augmented due to the hasty augment in the number of road vehicles. The damage caused to the human race by disasters has been a severe crisis both national and international arena. In this proposal, we have proposed a scheme disaster management as an application of vehicular ad hoc networks. This proposal would help those affected with an automated system using the functionality of smart vehicles, which would correspond to each other through communication from vehicle to vehicle and could communicate with the drive side of the road through the vehicle–infrastructure communications. Our proposed disaster management system is developed as an application of existing communication system.