Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Mathematical Analysis of EDCA’s Performance on the Control Channel of an IEEE WAVE Vehicular Network | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2010 Article ID 489527 15 pages doi 2010 489527 Research Article Mathematical Analysis of EDCA s Performance on the Control Channel of an IEEE WAVE Vehicular Network Jose R. Gallardo Dimitrios Makrakis and Hussein T. Mouftah Broadband Wireless and Internetworking Research Laboratory School of Information Technology and Engineering University of Ottawa Ottawa Ontario Canada K1N 6N5 Correspondence should be addressed to Jose R. Gallardo gallardo@ Received 3 July 2009 Accepted 5 February 2010 Academic Editor Máirtín O Droma Copyright 2010 Jose R. Gallardo et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Wireless networks for vehicular environments are gaining increasing importance due to their ability to provide a means for stations on the roadside and radio units on board of vehicles to communicate and share safety-related information thus reducing the probability of accidents and increasing the efficiency of the transportation system. With this goal in mind the IEEE is currently developing the Wireless Access in Vehicular Environments WAVE IEEE standard. WAVE devices use the IEEE s Enhanced Distributed Channel Access EDCA MAC protocol to compete for the transmission medium. This work proposes an analytical tool to evaluate the performance of EDCA under the specific conditions of the so-called control channel CCH of a WAVE environment including the particular EDCA parameter values and the fact that all safety-critical data frames are broadcasted. The protocol is modeled using Markov chains and results related to throughput frame-error rate buffer occupancy and delay are obtained under different traffic-load conditions. The main analysis is performed assuming .
