Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 68 for “"Wireless ad hoc networks"”.
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Routing in heterogeneous wireless ad hoc networks
Wireless ad hoc networks are used in several applications ranging from infrastructure monitoring to providing Internet connectivity to remote locations. A common assumption about these networks is that the devices that form the network are homogeneous in their capabilities. However in reality, the …
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Virtual infrastructure for wireless ad hoc networks
… of the most significant challenges introduced by ad hoc networks is coping with the unpredictable deployment, uncertain reliability, and erratic communication exhibited by emerging wireless networks and devices. The goal of this thesis is to develop a set of algorithms that address these …
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Backpressure Policies for Wireless ad hoc Networks
Interference in ad hoc wireless networks causes the performance of traditional networking protocols to suffer. However, some user applications in ad hoc networks demand high throughput and low end-user delay. In the literature, the backpressure policy, i.e. queue backlog differential-based joint …
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Location based services in wireless ad hoc networks
… we investigate location based services in wireless ad hoc networks from four different aspects - i) location privacy in wireless sensor networks (privacy), ii) end-to-end secure communication in randomly deployed wireless sensor networks (security), iii) quality versus latency trade-off in …
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Situation -Aware Security for Wireless Ad Hoc Networks
"Newly emerging ad hoc networking technology has enormous potential benefit for many mission-critical applications. However, providing adequate security required for the target applications presents many new challenges due to the unique nature of ad hoc environments. Complete decentralization and …
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Protocols and Architecture for Wireless Ad Hoc Networks
… describing the design and implementation of an ad hoc networking software module, which provides certain basic services necessary for configuring and operating ad hoc networks.
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Dynamic Cooperative Communications in Wireless Ad-Hoc Networks
… efficient cooperative communication method for wireless ad hoc networks. Typically, performance enhancement via cooperative communications can be achieved at the cost of other system resources such as additional bandwidth, transmit power, or more complex synchronization methods between …
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IP address auto-configuration for wireless ad-hoc networks
In an ad hoc network, nodes collaborate to allow communication without the presence of network infrastructure. Lack of manual management in ad hoc networks means that automatic configuration is highly desirable. The need for automatic configuration capabilities will become significantly more …
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Consensus and collision detectors in wireless ad hoc networks
… consider the fault-tolerant consensus problem in wireless ad hoc networks with crashprone nodes. Specifically, we develop lower bounds and matching upper bounds for this problem in single-hop wireless networks, where all nodes are located within broadcast range of each other. In a novel break from …
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Reliability and energy-efficiency in wireless ad-hoc networks
In this thesis, we address issues related to reliability and energy-efficiency in wireless ad hoc networks. In the first part of the work, we deal with the problem of simultaneously routing data along multiple disjoint paths from a source to destination in the most energy efficient manner. To this …
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A cooperative communication protocol for wireless ad-hoc networks
… efficiently transfer data. Multi-hop routing in ad-hoc wireless networks realizes some scalability benefits over direct transmission by utilizing cooperation in the network layer, where all nodes act as routers to relay messages. Cooperative transmission takes this idea a step further, moving …
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Multiple Description Video Communications in Wireless Ad Hoc Networks
As developments in wireless ad hoc networks continue, there is an increasing expectation with regard to supporting content-rich multimedia communications (e.g., video) in such networks, in addition to simple data communications. The recent advances in multiple description (MD) video coding have …
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Multipath "Fresnel Zone" Routing for Wireless Ad Hoc Networks
Prior research in routing for wireless ad hoc networks has shown that multipath routing can enhance data delivery reliability and provide load balancing. Nevertheless, only a few multipath routing algorithms have been proposed and their interaction with transport layer protocols has not been …
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Fine-grained reputation-based routing in wireless ad hoc networks
Ad hoc networks are very helpful in situations when no fixed network infrastructure is available. They are especially important in emergency situations such as natural disasters and military conflicts. Most developed wireless ad hoc routing protocols are designed to discover and maintain an active …
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Mobility-based Routing Overhead Management in Reconfigurable Wireless Ad hoc Networks
Mobility-Based Routing Overhead Management in Reconfigurable Wireless Ad Hoc Networks Routing Overheads are the non-data message packets whose roles are establishment and maintenance of routes for data packets as well as neighbourhood discovery and maintenance. They have to be broadcasted in the …
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Enabling cost aware routing with auctions in wireless ad-hoc networks
Battery power is a precious resource in wireless ad-hoc networks, and most routing protocols that have been proposed so far do not generate cost efficient routes. In this thesis, a novel auction-based cost-aware routing scheme, called CARA, is presented. CARA is designed as an extension of the MAC …
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Capactiy of single-hop communication links in wireless ad hoc networks
… capacity of single-hop communication links in wireless ad hoc networks as the transferable data rate over that link determined by the Shannon limit and by the fixed modulation scheme and bit error rate. The resulting capacity formulas are derived under the assumption of r-3.8 path loss and …
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A Proactive Routing Protocol for Multi-Channel Wireless Ad-hoc Networks
Wireless mobile ad-hoc networks consist of a collection of peer mobile nodes that form a network and are capable of communicating with each other without help from stationary infrastructure such as access points. The availability of low-cost, com-modity network interface cards (NICs) has made the …
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Behavior-based Incentives for Node Cooperation in Wireless Ad Hoc Networks
A Mobile Ad Hoc Network (MANET) adopts a decentralized communication architecture which relies on cooperation among nodes at each layer of the protocol stack. Its reliance on cooperation for success and survival makes the ad hoc network particularly sensitive to variations in node behavior. …
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Policy-Based Quality of Service Management in Wireless Ad Hoc Networks
Managing mobile ad hoc networks (MANETs) presents new challenges due to the need for a distributed management mechanism that can efficiently adapt to the dynamic nature of these networks. In particular, provisioning and management of Quality of Service (QoS) in such networks remains a challenging …
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