Sanjay S. Dorle

Performance Analysis of Routing Protocols in Realistic Environment for Vehicular Ad Hoc Networks

Vehicular Ad hoc Network (VANET) is a new way of communication which includes communication between vehicles moving at high speeds on the roads. VANET developed several new applications like traffic engineering, traffic management, provides emergency information to avoid accidents and other user applications. VANETs are similar to Mobile Ad hoc Networks (MANETs) but with different characteristics like, movement at high speeds, mobility, sufficient storage and processing power, unpredictable node density and difficult communication environment with short link lifetime etc. So for testing of any protocol for VANET needs realistic enviorment. In this paper, we create realistic environment for the performance analysis of proactive and reactive routing protocol in city scenarios is presented. The protocols evaluated are Ad hoc On demand Distance Vector (AODV), Ad-hoc On-demand Multipath Distance Vector Routing (AOMDV) and Destination Sequence Distance Vector (DSDV). In simulations, maps are used to model topology using traffic simulator and then vehicles with different parameter like length, maximum speed and acceleration etc. run on these topologies. The performance evaluation matrices used in this paper are packet delivery ratio and End to End Delay.

Improvement of QoS in VANET with different mobility patterns

In the past, many researchers depend highly on various real life environmental short coverage area networks to analyze the performance of various routing algorithms. Recent ever-increasing interest in vehicular ad hoc network communication (VAC) necessitates vehicular movement performance study via different mobility pattern simulation. Unlike many other works, we present a study on the performance of various routing algorithms with different mobility patterns for large coverage area networks like WiMAX using NS2. Also we are going to improve various quality of service (QoS) parameters like throughput, jitter, delay, packet delivery ratio and packet loss ratio for different scenario networks by using various routing algorithms with different mobility patterns, multiple input multiple output (MIMO) and adaptive modulation and coding (AMC) technique.

Evaluation of Multipath, Unipath and Hybrid Routing Protocols for Vehicular Ad Hoc Networks

Vehicular Adhoc Network (VANET) is a well known communication which includes communication between moving vehicles on the roads. VANET can be formed either using using existing infractructure or without preexisting infrastructure. With the VANET we can provide various kind of information to the vehicles for their safety and need. Routing protocols in VANET plays a very important role since many challenges like high speed, mobility, etc occurs within it. In this paper, an attempt is made to create realistic environment for the performance analysis of multipath, Unipath and hybrid routing protocol in city scenarios. The protocols evaluated are Ad hoc On demand Distance Vector (AODV), Ad-hoc On-demand Multipath Distance Vector Routing (AOMDV) and Destination Sequence Distance Vector (DSDV). All the three protocols are having their own specifications. In simulation, maps are used to model topology using traffic simulator and then vehicles with different parameter like length, maximum speed and acceleration etc. run on these topologies. The performance parameters evaluated in this paper are packet delivery ratio and end to end delay for the above said prototcols.

Vehicular Adhoc Networks Handovers with Metaheuristic Algorithms

VEHICULAR ad hoc networks (VANETs) are the self-configuring networks where the nodes are vehicles (equipped with on-board computers), elements of roadside infrastructure, sensors, and pedestrian personal devices. In the current state of the art in this field there is a need of studies on real outdoor experiments to validate the new VANETs optimizing protocols and applications. Thus exchanging up-to-date information among vehicles is the most salient feature of a VANET. In order to do so, the packets have to travel through the network from one node to the others & thus give rise to concept of inter VANET data handovers & VDTP (Vehicular data transfer Protocol). In this work, we have addressed the utility of metaheuristic algorithms (PSO, GA) for inter VANET sensor data handovers in order to study the performance analysis to maximize the throughput & reliability improvement in real VANET.

Vehicle Classification and Communication Using Zigbee Protocol

The innovation in wireless technology is to support in the areas of Intelligent Transport System (ITS). Wireless technology can be used in Vehicle-to-Vehicle and vehicle-to-infrastructure in transport applications. ZigBee is the key protocol for sensor network applications because of the long battery life, low-cost for installation, eases maintenance and small footprint. ZigBee enables mesh networking which supports a wireless communication between many coordinators, routers and receivers in environments where multiple applications are being monitored. The mesh network is ideal and self configured, also automatically self correct and is typically used in the internet by telephone network companies. This paper is about the study of ZigBee protocol role, mainly in the interconnection of infrared sensor with vehicles and infrastructure for classification of vehicles and further communicating the information to other intersections.

Clinical Depression Analysis Using Speech Features

Depression is a most common severe mental disturbance health disorder causing high societal costs. In clinical practice rating for depression depends almost on self questionnaires and clinical patient history report opinion. In recent years, the awareness has generated for automatic detection of depression from the speech signal. Some queries are raised that which features are more responsible for depression from speech and which classifiers gives good results. By identifying proper features from speech signal system even one can save the life of a patient. In this paper, a survey of speech signal features which relates for depression analysis is presented. Specially focused on adolescence speech. After surveying it is hypothesized that many speech features are there which are responsible for depression like linear features Prosodic, cepstral, spectral and glottal features and non-linear feature Teager energy operator (TEO). Some classification methods for depression analysis from previous studies are summarized.

Wireless Transmission Impact on the Lifetime of Routing Path in VANET

In recent years there has been a growing interest in the field of vehicular networks, primarily due to the advancement in technology and need for safety and entertainment applications. The current generation of vehicles has embedded computers, GPS receivers, and number of sensors, where as the next generation of these vehicles will potentially have short-range wireless network interface. The target of ITS (Intelligent transport system) is to increase safety of passenger by exchanging warning messages between vehicles, this can be done by offering on-board network applications which is a challenge for the scientific community. In addition to safety applications, other telemetric services could improve traffic efficiency environment preservation, comfort and provide a reliable journey. Since VANET (Vehicular Adhoc Network) is composed of vehicles equipped with short range wireless communication capabilities. The performance of vehicles can be affected by high mobility pattern of the vehicle, speed of vehicle, transmission range, network breakup, traffic density and number of vehicles in the route. This paper describes the effect of the wireless transmission range on the lifetime improvement of the routing path in VANET, simulation result obtained helps to select the appropriate transmission range for increasing the lifetime of the routing path.

Micro-Controlled Based Vehicle Safety System Using Dedicated Short Range Communications (DSRC)

Many accidents occur today when distant objects or roadway impediments are not quickly detected. To avoid these accidents, longer-range safety systems are needed with real time detection capability. To avoid road traffic collisions, vehicles required to be broadcast their position and speed to nearby vehicles periodically. In the above said method, to implement vehicle safety systems with one or two channels and using a single transceiver, micro-controller 89C51 is used as main driver. Emerging systems for active vehicle safety use short range sensors with LOS links, usually to detect vehicles or lane boundaries immediately adjacent to the host vehicle. Typical applications include forward collision warning, adaptive cruise control, and lane keeping.

Intersection Collision Detection and Warning Protocol: Design Approach

In recent years, the number of vehicles has increased dramatically. This causes a high traffic density and makes new security features a crucial point in order to keep the traffic safe. Developing automotive collision warning and avoidance systems will be very effective for reducing fatalities, injuries and associated costs. In order to develop an automotive collision warning and avoidance system, it will be necessary that the vehicles should be able to exchange (in real time) their dynamic information such as speed, acceleration, direction, relative position etc. The only way to exchange the vehiclespsila dynamic information will be through wireless communications. This paper presents a collision detection and warning protocol in intersection traffic controller (ITC) to improve the intelligent transportation systems (ITS) using a wireless communication technology. An intersection has a wireless unit called the Intersection Traffic Controller (ITC). This ITC keeps broadcasting a message all the time. Each vehicle communicates with the ITC in real time to let the ITC know about its current location. The ITC then includes this information in its message and warn the driver about the condition of the vehicle and the signal to avoid the collision. The current technology will allow us to build such a collision detection and warning protocol in a cost effective manner.

Transportation security through inter Vehicular Ad-Hoc networks (VANETs) handovers using RF trans receiver

Vehicular Ad-Hoc networks (VANETs) has mostly gained the attention of todays research efforts. The new proposed model will investigates security aspects of vehicle to vehicle communication (V2V) using RF transmitter and receiver. A key piece information in vehicular Ad-Hoc networks (VANETs) is position. The use of RF transmitter and receiver will considerably includes the amount of trust that can be given to the received position information. The goal of VANET researches to develop a vehicular communication system to enable quick and cost efficient distribution of data, for the benefits for passengers safety, security, & comfort. Our solution is based on simple principle “Believe what you see, verify what you hear”. By comparing what is seen i.e detected by RF transreceiver to what has been reported over the network, can confirm the real position of the neighbours and defect malicious vehicle, thus achieving the security each vehicle generates information about the state of the traffic based on both what is seen & what is received from the other vehicle in the system. This technique will improve security in VANET by preventing malicious users from falsifying their position information.