TY - JOUR
T1 - Cluster-based multi-channel communications protocols in vehicle ad hoc networks
AU - Su, Hang
AU - Chen, Hsiao Hwa
N1 - Funding Information:
sylvania, all in electrical engineering and computer science, and a Ph.D. degree in electrical engineering and computer science (electrical engineering — systems) from The University of Michigan, Ann Arbor. He is currently an assistant professor and the founding director of the Networking and Information Systems Laboratory, Department of Electrical and Computer Engineering, Texas A&M University, College Station. He was an assistant professor and the founding director of the Division of Computer Systems Engineering, Department of Electrical Engineering and Computer Sci ence, Beijing Information Technology Engineering Institute, Beijing, China, from 1984 to 1989. He was a research fel - low with the School of Electrical Engineering, University of Technology, Sydney, Australia, and the Department of Elec trical and Computer Engineering, James Cook University, Queensland, Australia, under a fellowship from the Chinese National Commission of Education. He worked as a sum mer intern with the Networks and Distributed Systems Research Department, Bell Laboratories, Murray Hills, New Jersey, and with AT&T Laboratories Research, Florham Park, New Jersey, in 1997. He has published more than 90 tech - nical papers. His current research interests focus on the areas of wireless networks and communications, mobile computing, cross-layer designs, and optimizations for QoS guarantees over mobile wireless networks, wireless sensor and ad hoc networks, wireless and wireline network securi ty, network protocols design and modeling for QoS guar- antees over multicast (and unicast) wireless (and wireline) networks, statistical communications theory, random signal processing, and distributed computer control systems. He received the U.S. National Science Foundation CAREER Award in 2004 for his research in the areas of mobile wireless and multicast networking and systems. He also received the TEES Select Young Faculty Award for Excel lence in Research Performance from the Dwight Look College of Engineering, Texas A&M University, in 2006. He is currently serving as an Editor for IEEE Transactions on Wireless Communications, an Associate Editor for IEEE Transactions on Vehicular Technology, and Associate Editor for IEEE Communications Letters, and is also currently serving as a Guest Editor for IEEE Wireless Communications for special issues on “Next Generation of CDMA vs. OFDMA for 4G Wireless Applications.” He has frequently served as a
Funding Information:
The research performed by Xi Zhang and Hang Su in this article was supported in part by the U.S. National Science Foundation CAREER Award under Grant ECS-0348694 and the research performed by Hsiao-Hwa Chen was supported in part by Taiwan NSC grant number NSC 95-2213-E-110-008.
PY - 2006/10
Y1 - 2006/10
N2 - The Dedicated Short Range Communications (DSRC) standard equipped with seven channels is designated for Intelligent Transportation System (ITS) applications to improve the driving safety and support networking services among moving vehicles. Making best use of the DSRC multichannel architecture, we propose a cluster-based multichannel communications scheme, which integrates the clustering with contention-free/contention-based MAC protocols. In our proposed scheme, the elected cluster-head (CH) vehicle functions as the coordinator (like WLAN's basestation) to collect/deliver the real-time safety messages within its own cluster and forward the consolidated safety messages to the neighboring CHs. Also, the CH vehicle controls channel-assignments for cluster-member vehicles transmitting/recieving the non-real-time traffics, which makes the wireless channels more efficiently utilized for the non-real-time data transmissions. Our scheme uses the contention-free MAC (TDMA/Broadcast) within a cluster and the IEEE 802.11 MAC among CH vehicles such that the real-time delivery of safety messages can be guaranteed. The simulation results show that our proposed scheme can significantly improve the throughputs of vehicle data communications while guaranteeing the real-time delivery of safety messages.
AB - The Dedicated Short Range Communications (DSRC) standard equipped with seven channels is designated for Intelligent Transportation System (ITS) applications to improve the driving safety and support networking services among moving vehicles. Making best use of the DSRC multichannel architecture, we propose a cluster-based multichannel communications scheme, which integrates the clustering with contention-free/contention-based MAC protocols. In our proposed scheme, the elected cluster-head (CH) vehicle functions as the coordinator (like WLAN's basestation) to collect/deliver the real-time safety messages within its own cluster and forward the consolidated safety messages to the neighboring CHs. Also, the CH vehicle controls channel-assignments for cluster-member vehicles transmitting/recieving the non-real-time traffics, which makes the wireless channels more efficiently utilized for the non-real-time data transmissions. Our scheme uses the contention-free MAC (TDMA/Broadcast) within a cluster and the IEEE 802.11 MAC among CH vehicles such that the real-time delivery of safety messages can be guaranteed. The simulation results show that our proposed scheme can significantly improve the throughputs of vehicle data communications while guaranteeing the real-time delivery of safety messages.
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U2 - 10.1109/WC-M.2006.250357
DO - 10.1109/WC-M.2006.250357
M3 - Article
AN - SCOPUS:33845588939
SN - 1536-1284
VL - 13
SP - 44
EP - 50
JO - IEEE Wireless Communications
JF - IEEE Wireless Communications
IS - 5
ER -