The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) is an integrated algorithm employed in the Enhanced Distributed Channel Access (EDCA) in the IEEE 802.11p protocol. CSMA/CA manages the access of packets to the medium and its main role is to avoid collisions among them. An essential process of CSMA/CA is the backoff period in which the packets has to wait for a random number of...
Vehicular-to-Vehicular (V2V) and Vehicular-to-Infrastructure (V2I) communications in Vehicular Ad hoc Network (VANET) environment rely mainly on Medium Access Control (MAC) to minimize the delay and maintain reliable access to the communication medium. IEEE 802.11p standard is developed to achieve these goals. However its performance deteriorates drastically in large networks due to the high level...
The performance of Vehicular Ad hoc Networks (VANETs) is greatly affected by the design of Medium Access Control (MAC) protocol adopted by these networks. In large-scale networks, the MAC protocol of the IEEE 802.11p standard may fail to provide the required Quality of Service (QoS) provisioning, in terms of delay and reliability, for safety-related applications. Therefore, new MAC mechanisms should...
The implementation of a smart transportation infrastructure is of paramount importance to establish a safe and secure transportation system. An imperative component of this system is a reliable, secure and delay-sensitive wireless communication protocol that allows the exchange of data between vehicles and the neighbouring infrastructure in an efficient way. In this paper, we propose an Adaptive Service...
Plug-in Electric Vehicles (PEVs) are expected to be widely utilized in the near future if issues related to the availability of charging infrastructure are resolved and if PEVs are efficiently integrated with the smart grid. The Vehicle-to-Grid (V2G) system is an emerging technology that enables the communication and control between PEVs and the smart grid. This promising concept is designed to provide...
The IEEE 802.11p is an emerging wireless protocol dedicated for Wireless Access in the Vehicular Environment (WAVE). It employs the Enhanced Distributed Channel Access (EDCA) mechanism to access the channel. Its objective is to provide differentiated services to vehicular networks which are delay-sensitive and requires high communication throughput. In this paper, we carry out comprehensive performance...
A reliable and time-efficient communication system between vehicles and infrastructure is an indispensable issue in the development of a smart city. The vehicles must have the ability to transmit and receive urgent messages with low latency. Infrastructures such as hospitals and police stations should be equipped with base stations capable of communicating in near real-time fashion with vehicles....
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.