A large portion of the network capacity of an ad hoc network can be wasted by the medium access mechanisms of omni-directional antennas. To overcome this problem, researchers propose the use of directional or adaptive antennas that largely reduce radio interference, improving the utilization of wireless medium and the resulting network throughput.<

Somprakash Bandyopadhyay, Siuli Roy, Tetsuro Ueda

IntroductionAd Hoc Networks: A PreambleCharacteristics of Ad Hoc Networks Some Prospective Usages of Ad Hoc Networks Some Research ChallengesPerformance Evaluation Techniques Organization of the Book The Issues and Challenges in Designing MAC and Routing ProtocolsMedia Access Control TechniquesRouting Protocols in Ad Hoc Wireless Networks Performance Evaluation Techniques Location Tracking and Media Access Control Using Smart AntennasIntroduction Introduction to Smart AntennasLocation-Tracking Mechanisms for Neighborhood DiscoveryDirectional Media Access Control Protocols A Few Assumptions and the RationalesPerformance Evaluation Discussion Location Tracking and Location Estimation of Nodes in Ad Hoc Networks: A Testbed ImplementationIntroduction Location Tracking and Neighborhood Discovery Location EstimationImplementation Results Error in Location Estimation: A Simulation StudyDiscussionA Routing Strategy for Effective Load Balancing Using SmartAntennas Introduction System Description Network-Aware Routing with Maximally Zone-Disjoint Shortest Path: An AnalysisMaximally Zone-Disjoint Multipath RoutingPerformance Evaluation DiscussionsPriority-Based QoS Routing Protocols Using Smart Antennas Introduction A Few Related DefinitionsPriority-Based QoS Routing Using Zone ReservationPriority-Based Flow-Rate Control for QoS ProvisioningUsing Feedback ControlService Differentiation in Multi-Hop Intervehicular CommunicationDiscussionsConclusion