The Impact of Multihop Wireless Channel on TCP Performance
IEEE Transactions on Mobile Computing
Overhaul of ieee 802.11 modeling and simulation in ns-2
Proceedings of the 10th ACM Symposium on Modeling, analysis, and simulation of wireless and mobile systems
Message broadcast using optical orthogonal codes in vehicular communication systems
The First International Workshop on Wireless Networking for Intelligent Transportation Systems
Piggyback cooperative repetition for reliable broadcasting of safety messages in VANETs
CCNC'09 Proceedings of the 6th IEEE Conference on Consumer Communications and Networking Conference
Adaptive intervehicle communication control for cooperative safety systems
IEEE Network: The Magazine of Global Internetworking
An improved coded repetition scheme for safety messaging in VANETs
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Enhancing VANET Performance by Joint Adaptation of Transmission Power and Contention Window Size
IEEE Transactions on Parallel and Distributed Systems
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In vehicular ad hoc networks (VANETs), beaconing (i.e. periodic transmissions of beacons) is one of the most challenging issues, which is mainly used to advertise the presence of a car to its neighbor cars. Based on the proximity awareness achieved through the beaconing, safety applications can quickly detect dangerous road situations and help drivers avoid them. Recently, repetition-based protocols have been proposed to meet the requirements of timeliness and reliability for the beaconing. However, since most of existing protocols employ CSMA as their underlying medium access control strategy, they are vulnerable to interference from hidden nodes. In this paper, we propose a new broadcasting protocol called Space-Division Repetition-based Broadcasting protocol (SDRB) in order to reduce interference caused by hidden nodes. In SDRB, the geographical area where vehicles are located is divided into smaller space divisions. Vehicles within difference space divisions are allowed to transmit their beacons at different points of time in order to cope with interference from hidden nodes. From the ns-2 simulation results, we verified that SDRB provides more reliable broadcasting service due to its capability of removing such interference as compared to CSMA.