naa a22 4500 510796087 CHVBK 20180411083337.0 cr unu---uuuuu 180411e20130201xx s 000 0 eng 10.1007/s11277-012-0531-8 doi (NATIONALLICENCE)springer-10.1007/s11277-012-0531-8 Scanning and Address Allocation Delays in Vehicular Communications [Elektronische Daten] [Syed Hasan, Nazmul Siddique, Shyam Chakraborty, Xuemei Ding, Wei Gao] WLAN-based roadside-to-vehicle communications is an increasingly popular research trend. This paper examines the applicability of WLANs in the Intelligent Transportation Systems with focus on reducing the scanning phase delay and the address allocation delay. The handover delays become intolerable when the indoor WLAN Access Poins are accessed from by the outdoor mobile nodes at vehicular speeds. In this work, we propose a baseline scheme which calls for passively scanning only the orthogonal channels to reduce the scanning phase delay in the overall handover latency. We argue that the interference free orthogonal channels are ideal for conveying time critical information in vehicular environments. Secondly, this paper evaluates the delays incurred by the Dynamic Host Configuration Protocol (DHCP) in the handover process. The focus on establishing the amount of delay contributed by each DHCP phase and make some meaningful comments at the end. The conclusions made in this paper are based on real-world experiments and tests. Springer Science+Business Media, LLC., 2012 802.11 networks nationallicence Intelligent Transportation Systems nationallicence Orthogonal channels nationallicence Outdoor experiments nationallicence Passive scanning nationallicence Hasan Syed College of Information and Communication Engineering, Sungkyunkwan University, Suwon, Republic of Korea aut Siddique Nazmul Intelligent Systems Research Centre, School of Computing and Intelligent Systems, University of Ulster, Londonderry, UK aut Chakraborty Shyam Independent Consultant, Helsinki-Espoo, Finland aut Ding Xuemei Faculty of Software, Fujian Normal University, Fujian, China aut Gao Wei Faculty of Software, Fujian Normal University, Fujian, China aut Wireless Personal Communications Springer US; http://www.springer-ny.com 68/4(2013-02-01), 1415-1433 0929-6212 68:4<1415 2013 68 11277 https://doi.org/10.1007/s11277-012-0531-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-012-0531-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hasan Syed College of Information and Communication Engineering, Sungkyunkwan University, Suwon, Republic of Korea aut NATIONALLICENCE 700 1- Siddique Nazmul Intelligent Systems Research Centre, School of Computing and Intelligent Systems, University of Ulster, Londonderry, UK aut NATIONALLICENCE 700 1- Chakraborty Shyam Independent Consultant, Helsinki-Espoo, Finland aut NATIONALLICENCE 700 1- Ding Xuemei Faculty of Software, Fujian Normal University, Fujian, China aut NATIONALLICENCE 700 1- Gao Wei Faculty of Software, Fujian Normal University, Fujian, China aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 68/4(2013-02-01), 1415-1433 0929-6212 68:4<1415 2013 68 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer