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Recent works on enhancing comfortability and convenience in vehicles reveal that information collections by various wireless sensor nodes have the potential due to their easiness of install and their small size. However, the conventional wireless network standards achieve insufficient reliability for practical in-vehicle communications. In this paper, through implementing 2.4GHz devices in an actual...
In this work, the analysis of the performance of a Wireless Sensor Network integrated within urban infrastructure employed in an Infrastructure to Vehicle network will be presented. Features of a realistic scenario in which urban vehicles will be located will be analyzed with the aid of in-house implemented 3D Ray Launching code, in which the scenario, including urban furnishing, vehicles and users...
Recently, there has been significant research focus on smart cities and how to use resources efficiently. Parking space, in particular, is scarce in most metropolitan areas and intelligent systems are required to coordinate parking. This paper presents a wireless system for locating parking spots remotely via a smartphone, and a wireless sensor node which determines if parking spots are vacant or...
The technology based ubiquitous patient monitoring is regarded as a viable solution for managing the chronic diseases and medical emergencies in order to economize the healthcare services. The reliability of end to end communication between patients and healthcare services in wireless patient monitoring is the critical requirement in such systems irrespective of time and location dependencies. In...
Numerous applications of wireless sensor networks (WSNs) in harsh terrains are constrained by the sensors' battery-power and face the difficulties of data collection. In this paper, we propose to exploit wireless power transfer technology to replenish the energy of sensor clusters and develop an efficient data collection scheme for those wireless rechargeable senor clusters deployed in harsh terrains...
This paper introduces the MARCO POLO Algorithm (MPA) that uses wireless discovery and control signals from a Master Control Node (MCN) with a cognitive engine to learn the relative location and orientation of a randomly distributed set of array elements. The elements are then synchronized and instructed to apply appropriate magnitude and phase offsets to collectively radiate as an array with beamforming...
This paper investigates the information dissemination process in wireless communication networks formed by vehicles. As vehicles are moving constantly, a vehicular ad-hoc network exhibits a highly-dynamic network topology and a fast-changing radio environment. These distinguishing characteristics result in random and unreliable wireless connections between vehicles. Consequently, vehicles need to...
Road safety can be improved a lot with the help of Cooperative Collision Warning System, in which vehicles cooperate with each other for relaying safety messages to avoid accidents. Once a vehicle is in an abnormal status, which may lead to potential accidents, an emergency safety message will be generated and sent out to warn surrounding vehicles. In this paper, we address the routing problem of...
As a new short-range wireless sensor network (WSN) communication technology, ZigBee has the advantages of low power consumption and low cost, which makes it widely spread in many fields when it refers to application prospect. This paper analyzes the localization based on ZigBee and introduces its application in real life.
Data dissemination over long distances in urban scenarios is the foundation of many VANET applications, but rapid shifting in network topology, unstable quality of wireless communication and channel capacity constraints of VANETs pose many challenges to data dissemination. In response, we propose a connectivity-aware data delivery mechanism on the basis of an improved greedy broadcasting. Moreover,...
This paper presents an idea and a construction details of the tiny sensor-based robot-vehicle as a mobile hardware platform for Wireless Ad-hoc Sensor Networks (WSN). The main scope of the research was design and implementation of the mobile platform, allowing the WSN nodes to autonomously change its location in active way. The designed platform had been integrated with sensor node and provided with...
Camera-based surveillance is an important technology to monitor people, assets and places, for the applications of increasing physical security. Access to information services whilst on the move is becoming increasingly prevalent within transport systems. This paper examines motorway vehicles equipped with wireless communication nodes to obtain images from the cameras distributed along a motorway...
In recent years, eco-friendly transportation is becoming more and more important. Unmanned vehicle has attracted many researchers' attention from both the academia and industry of, notably, US, EU and Korea. Unmanned vehicle is widely accepted in many public places due to its reliability, security, pollution-free and low-speed. Under these circumstances, inter-vehicle communications has become an...
The time synchronization is an important problem for wireless sensor networks. There has been many time synchronization methods proposed in the literature, such as. The purpose of them was to synchronize the whole network, which cost much time and energy. In this paper, an efficient time synchronization scheme for wireless sensor networks is proposed. According to the specific application purpose...
Effective intelligent transportation system depends on the abundance of timely road information. This paper first presents the role of road information by taking dynamic route guidance system as an example; and then explains the necessary of importing wireless sensor networks as road information providers. We illustrate the principle of using magnetic sensors to detect vehicles and how the road information...
This talk will consist in an overview about the majore search projects related to wireless multimedia, context aware computing and wireless ad hoc and sensor networks, distributed and collaborative virtual environment, which we are currently investigating at PARADISE Research Laboratory, uOttawa. Next, we shall focus upon the design of large-scale distributed and mobile system for critical conditions...
In this paper, the performance of vehicle to infrastructure (V2I) communications is evaluated based on the IEEE 802.11a protocol at 5.8GHz for ubiquitous transportation sensor networks. The end-to-end delay and fairness are evaluated for traffic information services.
Intelligent Transportation Systems are based on the acquisition of urban traffic information timely and accurately. This paper puts forward a prototype system of Wireless Traffic Information Service System(WTISS). In WTISS, vehicles equipped with wireless communication module are regarded as moving sensors on traffic network. Road-side station can get traffic status by analyzing data collected by...
The literature about GNSS in vehicular networks is usually restricted to the mutual interaction between positioning and routing (respectively with georouting and services of GNSS assistance). However, despite the apparent contradiction, also asynchronous vehicular ad-hoc networks (Vanets) built on the top of IEEE 802.11p require an absolute synchronization: this could be easily provided by the time...
In this paper, we present a spatiotemporal multicast, called a mobicast, protocol for supporting applications which require spatiotemporal coordination in VANETs. The spatiotemporal character of a mobicast is to forward a mobicast message to vehicles located in some geographic zone at time t, where the geographic zone is denoted as zone of relevance (ZOR). Vehicles located in ZOR at the time t must...
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