TDMA Slot Reservation in Cluster-Based VANETs

<p>Vehicular Ad Hoc Networks (VANETs) are a form of Mobile Ad Hoc Networks (MANETs) <strong>in</strong> which vehicles on the road form the nodes of the network. VANETs provide several services to enhance the safety and comfort of drivers and passengers. These services can be obtained by the wireless exchange of information among the vehicles driving on the road. <strong>In</strong> particular, the transmission of two different types of messages, safety/update and non-safety messages.</p> <p>The transmission of safety/update message aims to inform the nearby vehicles about the sender's current status and/or a detected dangerous situation. This type of transmission is designed to help <strong>in</strong> accident and danger avoidance. Moreover, it requires high message generated rate and high reliability. On the other hand, the transmission of non-safety message aims to increase the comfort on vehicles by supporting several non-safety services, from notifications of traffic conditions to file sharing. Unfortunately, the transmission of non-safety message has less priority than safety messages, which may cause shutting down the comfort services. The goal of this dissertation is to design a MAC protocol in order to provide the ability of the transmission of non-safety message with little impact on the reliability of transmitting safety message even if the traffic and communication densities are high.</p> <p>VANET is a highly dynamic network. With lack of specialized hardware for infrastructure and the mobility to support network stability and channel utilization, acluster-based MAC protocol is needed to solve these overcomes.</p> <p>This dissertation makes the following contributions:</p> <p>1. A multi-channel cluster-based TDMA MAC protocol to coordinate intracluster communications (TC-MAC)</p> <p>2. A CH election and cluster formation algorithm based on the traffic flow and a cluster maintenance algorithm that benefits from our cluster formation algorithm</p> <p>3. A multi-channel cluster-based CDNIA/TDMA hybrid MAC protocol to coordinate inter-cluster communications</p> <p>I will show that TC-MAC provides better performance than the current WAVE standard in terms of safety/update message reliability and non-safety message delivery. Additionally, I will show that my clustering and cluster maintenance protocol provides more stable clusters, which will reduce the overhead of clusterhead election and re-clustering and leads to an efficient hierarchical network topology.</p>

Name thesis:degree_name

Doctor of Philosophy (PhD)

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Computer Science

Year dc:date.available

2013

Author dc:creator

• Almalag, Mohammad Salem

Contributors dc:contributor

• Michele C. Weigle
• Kurt Maly
• Hussein Abdel-Wahab
• Stephan Olariu
• Dimitrie C. Popescu

• Applied sciences
• Clusters
• Mobiles
• TDMA slot reservation
• Vehicular ad hoc networks (Computer networks)
• Automotive Engineering
• Computer Sciences
• Digital Communications and Networking

Statement dc:rights

• <p>In Copyright. URI: <a href="http://rightsstatements.org/vocab/InC/1.0/">http://rightsstatements.org/vocab/InC/1.0/</a> This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).</p>

Identifier

9781303219573

OAI identifier oai:identifier

oai:digitalcommons.odu.edu:computerscience_etds-1003