alexa An Efficient Approach for Emergency Message Disseminat
ISSN ONLINE(2320-9801) PRINT (2320-9798)

International Journal of Innovative Research in Computer and Communication Engineering
Open Access

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Special Issue Article

An Efficient Approach for Emergency Message Dissemination in VANET

Shibu.J1, Ramkumar.R2, D.Gowthami3, S.G.Siddharth4
  1. PG Students, Embedded Systems, Bannari Amman Institute of Technology, Sathyamangalam, Tamilnadu, India
  2. Assistant Professor, Department of ECE, Bannari Amman Institute of Technology, Sathyamangalam, Tamilnadu, India
  3. PG Students, Embedded Systems, Bannari Amman Institute of Technology, Sathyamangalam, Tamilnadu, India
  4. PG Students, Embedded Systems, Bannari Amman Institute of Technology, Sathyamangalam, Tamilnadu, India
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Abstract

Vehicular communication systems developed largely by the growing interest in intelligent transportation systems (ITS). Cooperative driving can improve safety and efficiency by enabling vehicles to exchange emergency messages to each other in the neighborhood and to assist driver in making proper decision to avoid vehicle collisions and congestion. Broadcast transmission is usually used for disseminating safety related information among vehicles. Broadcast over wireless networks poses many challenges due to link unreliability, hidden terminal, message redundancy, and broadcast storm, etc., which greatly degrade the network performance. The aim of this work is to design a cross-layer broadcast protocol (CLBP) for an efficient and reliable broadcast for emergency message dissemination in Inter-Vehicle Communication (IVC) systems. The CLBP is not only used to minimize the broadcast message redundancy and link delay but it is also used for quick and reliable delivery of emergency message in IVC and for improving the transmission reliability. First step is to select a proper relaying node to forward the emergency messages. Second, based on the derived metric, a cross-layer approach is used to efficiently broadcast emergency message in the desired propagation direction. Finally, NS-2 simulation results are analyzed in terms of the PER (Packet Error Rate) of the emergency message, the relay selection delay, and the emergency message-access delay and the results are compared with Ad-hoc Multihop Broadcast (AMB) protocol.

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