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Title: Design of a signaling gateway to interoperate H.323 and SIP protocols.
Creator: Akbarian, Hamid., Florida Atlantic University, Hsu, Sam
Abstract/Description: This thesis proposes a design for a signaling gateway to address the issues of interoperability between H.323 and SIP. The two IP Telephony standards currently compete for the dominance of IP telephony protocols. We investigate and study these two protocols in terms of interoperability. The question central to this thesis is the issue of interoperability between H.323 and SIP. A signaling gateway model is proposed and designed to address and solve this issue. The proposed model includes Call...
Show moreThis thesis proposes a design for a signaling gateway to address the issues of interoperability between H.323 and SIP. The two IP Telephony standards currently compete for the dominance of IP telephony protocols. We investigate and study these two protocols in terms of interoperability. The question central to this thesis is the issue of interoperability between H.323 and SIP. A signaling gateway model is proposed and designed to address and solve this issue. The proposed model includes Call Initialization, Call Setup and Control, Capability Exchange and Call Termination, which are the four fundamental features supported by H.323 and SIP for establishing calls. Furthermore, we design the four internal components, which are common to the four main functions mentioned above. These four components are type checking, decomposition, conversion and reformatting. In addition, we illustrate in six different cases the functionality of the proposed signaling gateway for establishing calls between H.323 and SIP. These six cases also demonstrate the conversion capability of the proposed signaling gateway during a call between H.323 and SIP endpoints.
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Date Issued: 2001
PURL: http://purl.flvc.org/fcla/dt/12784
Subject Headings: Internet telephony, Computer network protocols, Packet switching (Data transmission)
Format: Document (PDF)

Title: Dual Bus R-Net: A new local/metropolitan area network.
Creator: Chauhan, Sanjeev Birbal., Florida Atlantic University, Ilyas, Mohammad
Abstract/Description: In this thesis we have proposed and analyzed a new architecture for high speed fiber optic LANs/MANs, called the Dual Bus R-Net. The scheme is based on a slotted unidirectional dual bus structure. It uses a reservation mechanism to generate slotted frames on each bus. Frames consist of a reservation slot and one or many information slots. Stations reserve slots by transmitting reservation requests on the bus carrying information in the opposite direction. The scheme has the advantage of...
Show moreIn this thesis we have proposed and analyzed a new architecture for high speed fiber optic LANs/MANs, called the Dual Bus R-Net. The scheme is based on a slotted unidirectional dual bus structure. It uses a reservation mechanism to generate slotted frames on each bus. Frames consist of a reservation slot and one or many information slots. Stations reserve slots by transmitting reservation requests on the bus carrying information in the opposite direction. The scheme has the advantage of superior channel utilization, bounded delay, fair access to all stations, dynamic bandwidth allocation to network users, and implementation simplicity. Extensive simulations have been carried out to verify the characteristics of the network. Simulation results reinforce the initial claims of the advantages offered by Dual Bus R-Net. Performance analysis is presented in terms of network delay and channel utilization. Simulation results are compared with similar results of X-Net, R-Net, DQDB, and Expressnet.
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Date Issued: 1994
PURL: http://purl.flvc.org/fcla/dt/15006
Subject Headings: Local area networks (Computer networks), Metropolitan area networks (Computer networks), Computer network architectures, Computer network protocols
Format: Document (PDF)

Title: Enhanced ticket-based QoS routing protocols in ad hoc networks.
Creator: Huang, Chun-Jung, Florida Atlantic University, Wu, Jie
Abstract/Description: This thesis describes QoS routing techniques in ad hoc networks. QoS routing is to find paths between given source and destinations that fulfill a set of QoS requirements. QoS routing in ad hoc networks is a challenging problem due to the dynamical nature of ad hoc networks and the complexity of the QoS routing problem. Ticket-based probing scheme (TBP) is a creative approach to solve QoS routing problem, however, its proactive nature makes it deficient and unscalable. In this thesis, we...
Show moreThis thesis describes QoS routing techniques in ad hoc networks. QoS routing is to find paths between given source and destinations that fulfill a set of QoS requirements. QoS routing in ad hoc networks is a challenging problem due to the dynamical nature of ad hoc networks and the complexity of the QoS routing problem. Ticket-based probing scheme (TBP) is a creative approach to solve QoS routing problem, however, its proactive nature makes it deficient and unscalable. In this thesis, we first present the adaptive ticket-based routing protocol (ATBR), a proactive protocol enhanced from TBP, by introducing a new imprecise QoS state model. We then present the location-aided, ticket-based routing protocol (LTBR), an integration of locate-based routing and ticket-based routing, where tickets are dynamically generated and guided by location and QoS metric. Our simulations show that, in networks under any density, LTBR achieves close performances to flooding with considerably lower routing overhead.
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Date Issued: 2003
PURL: http://purl.flvc.org/fcla/dt/13060, http://purl.flvc.org/fau/fd/FADT13060
Subject Headings: Computer network protocols, Mobile computing, Wireless communication systems, Routers (Computer networks)
Format: Document (PDF)

Title: Performance analysis of multi-base station slotted ALOHA for wireless LAN in a Nakagami fading environment.
Creator: Chopra, Anju S., Florida Atlantic University, Aalo, Valentine A.
Abstract/Description: Capture effect has shown considerable improvement on performance of slotted ALOHA systems. Further, improvement is expected by increasing the number of base stations. The performance of such slotted ALOHA systems is analyzed with the aid of Equilibrium point analysis. Packet dropping due to finite number of retransmissions is taken into account. The numerical results indicate that the finite number of retransmission trials mainly contribute to the improvement of the packet dropping...
Show moreCapture effect has shown considerable improvement on performance of slotted ALOHA systems. Further, improvement is expected by increasing the number of base stations. The performance of such slotted ALOHA systems is analyzed with the aid of Equilibrium point analysis. Packet dropping due to finite number of retransmissions is taken into account. The numerical results indicate that the finite number of retransmission trials mainly contribute to the improvement of the packet dropping probability in the range of light input traffic. The use of multiple base stations improves the overall throughput and the average transmission delay in the range of heavy input traffic.
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Date Issued: 1996
PURL: http://purl.flvc.org/fcla/dt/15268
Subject Headings: Local area networks (Computer networks), Wireless communication systems, Packet switching (Data transmission), Computer network protocols
Format: Document (PDF)

Title: Performance evaluation of Bluetooth(TM) network in the presence of self-interference.
Creator: Gandhi, Viraf Rusi., Florida Atlantic University, Pandya, Abhijit S.
Abstract/Description: Wireless personal area networks (WPAN) are becoming more and more popular for use by mobile professionals in areas like airports, hotels, or convention centers. The demand for wireless networks is expected to undergo an explosive growth as Bluetooth(TM) capable devices become more and more popular. In such a scenario, it is imperative that designer are aware of the performance characteristics of several Bluetooth(TM) networks operating within the same area. There are several issues that need...
Show moreWireless personal area networks (WPAN) are becoming more and more popular for use by mobile professionals in areas like airports, hotels, or convention centers. The demand for wireless networks is expected to undergo an explosive growth as Bluetooth(TM) capable devices become more and more popular. In such a scenario, it is imperative that designer are aware of the performance characteristics of several Bluetooth(TM) networks operating within the same area. There are several issues that need consideration like security, self-interference and adjacent network interference. The objective of this research is to evaluate the performance of a Bluetooth(TM) network in the presence of self-interference which included adjacent and co-channel interference from neighboring Bluetooth(TM) networks. Specific to the above topics of interest, the following research tasks are performed: (1) The magnitude of self-interference problem in Bluetooth(TM) networks. (2) The system throughput is evaluated by varying duty cycles of the various networks. (3) The pathloss difference is measured between the desired and the interfering device.
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Date Issued: 2000
PURL: http://purl.flvc.org/fcla/dt/12679
Subject Headings: Bluetooth technology, Telecommunication--Equipment and supplies, Computer network protocols
Format: Document (PDF)

Title: Integration of dissimilar network management systems.
Creator: Frost, Sandra Lynn., Florida Atlantic University, Ilyas, Mohammad
Abstract/Description: The purpose of this thesis is to examine the issues involved in centralizing network control of two dissimilar network management systems, through the use of a protocol translator. In particular, we consider communication between a Programmable Communications Processor (PCP) and an Access Communications Processor (ACP) for the purposes of control, configuration, software updating and backup. The integration should maintain backwards compatibility to both systems, as well as providing value...
Show moreThe purpose of this thesis is to examine the issues involved in centralizing network control of two dissimilar network management systems, through the use of a protocol translator. In particular, we consider communication between a Programmable Communications Processor (PCP) and an Access Communications Processor (ACP) for the purposes of control, configuration, software updating and backup. The integration should maintain backwards compatibility to both systems, as well as providing value-added functionality. Issues to be examined include protocol translator design criteria, an implementation strategy for a state/event driven handler and performance testing.
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Date Issued: 1990
PURL: http://purl.flvc.org/fcla/dt/14619
Subject Headings: Computer network protocols, Computer networks--Management
Format: Document (PDF)

Title: Energy-efficient protocols for wireless sensor networks.
Creator: Du, Kemei., Florida Atlantic University, Wu, Jie
Abstract/Description: This thesis describes energy-conserving techniques in wireless sensor networks. In wireless sensor networks the sensor nodes gather information and send the information to a base station periodically. Some important messages need be broadcast to all nodes. Due to the limited battery capacity in sensor nodes, energy efficiency is becoming a major challenging problem in these power-constrained networks. Chain-based protocols construct a transmission chain connecting all nodes to save energy...
Show moreThis thesis describes energy-conserving techniques in wireless sensor networks. In wireless sensor networks the sensor nodes gather information and send the information to a base station periodically. Some important messages need be broadcast to all nodes. Due to the limited battery capacity in sensor nodes, energy efficiency is becoming a major challenging problem in these power-constrained networks. Chain-based protocols construct a transmission chain connecting all nodes to save energy dissipation of data transmission. We propose a multiple-chain scheme for all-to-all broadcasting. Furthermore, we develop an energy-efficient chain-construction algorithm which uses a sequence of insertions to minimize the energy consumption along the chain. We propose an energy-based adaptive clustering protocol, in which cluster-head elections depend on not only a probabilistic model but also the remaining energy in each node. This protocol improves the life time of the network by distributing energy usage effectively among the sensor nodes.
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Date Issued: 2002
PURL: http://purl.flvc.org/fcla/dt/12912
Subject Headings: Wireless communication systems, Computer network protocols
Format: Document (PDF)

Title: Correctness analysis of cache conherence protocols using Petri nets.
Creator: Hassan, Ahmed Kamal., Florida Atlantic University, Mahgoub, Imad
Abstract/Description: The use of cache memories in multiprocessor systems increases the overall systems performance. Caches reduce the amount of network traffic and provide a solution to the memory contention problem. However, caches introduce memory consistency problems. The existence of multiple cache copies of a memory block will result in an inconsistent view of memory if one processor changes a value in its associated cache. Cache coherence protocols are algorithms designed in software or hardware to maintain...
Show moreThe use of cache memories in multiprocessor systems increases the overall systems performance. Caches reduce the amount of network traffic and provide a solution to the memory contention problem. However, caches introduce memory consistency problems. The existence of multiple cache copies of a memory block will result in an inconsistent view of memory if one processor changes a value in its associated cache. Cache coherence protocols are algorithms designed in software or hardware to maintain memory consistency. With the increased complexity of some of the more recent protocols, testing for the correctness of these protocols becomes an issue that requires more elaborate work. In this thesis, correctness analysis of a selected group of representative cache coherence protocols was performed using Petri nets as a modeling and analysis tool. First, the Petri net graphs for these protocols were designed. These graphs were built by following the logical and coherence actions performed by the protocols in response to the different processors' requests that threatens memory consistency. Correctness analysis was then performed on these graphs.
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Date Issued: 1997
PURL: http://purl.flvc.org/fcla/dt/15366
Subject Headings: Cache memory, Multiprocessors, Computer network protocols, Petri nets
Format: Document (PDF)

Title: Elliptic curves: identity-based signing and quantum arithmetic.
Creator: Budhathoki, Parshuram, Steinwandt, Rainer, Eisenbarth, Thomas, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Mathematical Sciences
Abstract/Description: Pairing-friendly curves and elliptic curves with a trapdoor for the discrete logarithm problem are versatile tools in the design of cryptographic protocols. We show that curves having both properties enable a deterministic identity-based signing with “short” signatures in the random oracle model. At PKC 2003, Choon and Cheon proposed an identity-based signature scheme along with a provable security reduction. We propose a modification of their scheme with several performance benefits. In...
Show morePairing-friendly curves and elliptic curves with a trapdoor for the discrete logarithm problem are versatile tools in the design of cryptographic protocols. We show that curves having both properties enable a deterministic identity-based signing with “short” signatures in the random oracle model. At PKC 2003, Choon and Cheon proposed an identity-based signature scheme along with a provable security reduction. We propose a modification of their scheme with several performance benefits. In addition to faster signing, for batch signing the signature size can be reduced, and if multiple signatures for the same identity need to be verified, the verification can be accelerated. Neither the signing nor the verification algorithm rely on the availability of a (pseudo)random generator, and we give a provable security reduction in the random oracle model to the (`-)Strong Diffie-Hellman problem. Implementing the group arithmetic is a cost-critical task when designing quantum circuits for Shor’s algorithm to solve the discrete logarithm problem. We introduce a tool for the automatic generation of addition circuits for ordinary binary elliptic curves, a prominent platform group for digital signatures. Our Python software generates circuit descriptions that, without increasing the number of qubits or T-depth, involve less than 39% of the number of T-gates in the best previous construction. The software also optimizes the (CNOT) depth for F2-linear operations by means of suitable graph colorings.
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Date Issued: 2014
PURL: http://purl.flvc.org/fau/fd/FA00004182, http://purl.flvc.org/fau/fd/FA00004182
Subject Headings: Coding theory, Computer network protocols, Computer networks -- Security measures, Data encryption (Computer science), Mathematical physics, Number theory -- Data processing
Format: Document (PDF)

Title: Universal physical access control system (UPACS).
Creator: Carryl, Clyde, Alhalabi, Bassem A., Florida Atlantic University, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: This research addresses the need for increased interoperability between the varied access control systems in use today, and for a secure means of providing access to remote physical devices over untrusted networks. The Universal Physical Access Control System (UPACS) is an encryption-enabled security protocol that provides a standard customizable device control mechanism that can be used to control the behavior of a wide variety of physical devices, and provide users the ability to securely...
Show moreThis research addresses the need for increased interoperability between the varied access control systems in use today, and for a secure means of providing access to remote physical devices over untrusted networks. The Universal Physical Access Control System (UPACS) is an encryption-enabled security protocol that provides a standard customizable device control mechanism that can be used to control the behavior of a wide variety of physical devices, and provide users the ability to securely access those physical devices over untrusted networks.
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Date Issued: 2015
PURL: http://purl.flvc.org/fau/fd/FA00004354, http://purl.flvc.org/fau/fd/FA00004354
Subject Headings: Body area networks (Electronics), Computational complexity, Computer network protocols, Computer security, Cryptography, Data encryption (Computer science), Data structures (Computer science), Telecommunication -- Security measures
Format: Document (PDF)

Title: Unifying the conceptual levels of network security through the use of patterns.
Creator: Kumar, Ajoy, Fernandez, Eduardo B., Florida Atlantic University, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: Network architectures are described by the International Standard for Organization (ISO), which contains seven layers. The internet uses four of these layers, of which three are of interest to us. These layers are Internet Protocol (IP) or Network Layer, Transport Layer and Application Layer. We need to protect against attacks that may come through any of these layers. In the world of network security, systems are plagued by various attacks, internal and external, and could result in Denial...
Show moreNetwork architectures are described by the International Standard for Organization (ISO), which contains seven layers. The internet uses four of these layers, of which three are of interest to us. These layers are Internet Protocol (IP) or Network Layer, Transport Layer and Application Layer. We need to protect against attacks that may come through any of these layers. In the world of network security, systems are plagued by various attacks, internal and external, and could result in Denial of Service (DoS) and/or other damaging effects. Such attacks and loss of service can be devastating for the users of the system. The implementation of security devices such as Firewalls and Intrusion Detection Systems (IDS), the protection of network traffic with Virtual Private Networks (VPNs), and the use of secure protocols for the layers are important to enhance the security at each of these layers.We have done a survey of the existing network security patterns and we have written the missing patterns. We have developed security patterns for abstract IDS, Behavior–based IDS and Rule-based IDS and as well as for Internet Protocol Security (IPSec) and Transport Layer Security (TLS) protocols. We have also identified the need for a VPN pattern and have developed security patterns for abstract VPN, an IPSec VPN and a TLS VPN. We also evaluated these patterns with respect to some aspects to simplify their application by system designers. We have tried to unify the security of the network layers using security patterns by tying in security patterns for network transmission, network protocols and network boundary devices.
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Date Issued: 2014
PURL: http://purl.flvc.org/fau/fd/FA00004132, http://purl.flvc.org/fau/fd/FA00004132
Subject Headings: Computer architecture, Computer network architectures, Computer network protocols, Computer network protocols, Computer networks -- Security measures, Expert systems (Computer science)
Format: Document (PDF)

Title: A Study on Random Sum Statistics: Application to Wireless Network Performance Analysis.
Creator: Pattaramalai, Suwat, Aalo, Valentine A., Florida Atlantic University, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: The statistics of random sum is studied and used to evaluate performance metrics in wireless networks. Pertinent wireless network performance measures such as call completion/dropping probabilities and the average number of handovers usually require the probability distributions of the cell dwell time and call holding time; and are therefore not easy to evaluate. The proposed performance evaluation technique requires the moments of the cell dwell time and is given in terms of the Laplace...
Show moreThe statistics of random sum is studied and used to evaluate performance metrics in wireless networks. Pertinent wireless network performance measures such as call completion/dropping probabilities and the average number of handovers usually require the probability distributions of the cell dwell time and call holding time; and are therefore not easy to evaluate. The proposed performance evaluation technique requires the moments of the cell dwell time and is given in terms of the Laplace transform function of the call holding time. Multimedia services that have Weibull and generalized gamma distributed call holding times are investigated. The proposed approximation method uses the compound geometric random sum distribution and requires that the geometric parameter be very small. For applications in which this parameter is not sufficiently small, a result is derived that improves the accuracy (to order of the geometric parameter) of the performance measures evaluated.
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Date Issued: 2007
PURL: http://purl.flvc.org/fau/fd/FA00012575
Subject Headings: Mobile communication systems--Technological innovations, Computer network protocols, Local area networks (Computer networks), Differentiable dynamical systems
Format: Document (PDF)

Title: A utility-based routing scheme in multi-hop wireless networks.
Creator: Lu, Mingming., College of Engineering and Computer Science, Florida Atlantic University, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: Multi-hop wireless networks are infrastructure-less networks consisting of mobile or stationary wireless devices, which include multi-hop wireless mesh networks and multi-hop wireless sensor networks. These networks are characterized by limited bandwidth and energy resources, unreliable communication, and a lack of central control. These characteristics lead to the research challenges of multi-hop wireless networks. Building up routing schemes with good balance among the routing QoS (such as...
Show moreMulti-hop wireless networks are infrastructure-less networks consisting of mobile or stationary wireless devices, which include multi-hop wireless mesh networks and multi-hop wireless sensor networks. These networks are characterized by limited bandwidth and energy resources, unreliable communication, and a lack of central control. These characteristics lead to the research challenges of multi-hop wireless networks. Building up routing schemes with good balance among the routing QoS (such as reliability, cost, and delay) is a paramount concern to achieve high performance wireless networks. These QoS metrics are internally correlated. Most existing works did not fully utilize this correlation. We design a metric to balance the trade-off between reliability and cost, and build up a framework of utility-based routing model in multi-hop wireless networks. This dissertation focuses on the variations with applications of utility-based routing models, designing new concepts, and developing new algorithms for them. A review of existing routing algorithms and the basic utility-based routing model for multi-hop wireless networks has been provided at the beginning. An efficient algorithm, called MaxUtility, has been proposed for the basic utility-based routing model. MaxUtility is an optimal algorithm that can find the best routing path with the maximum expected utility., Various utility-based routing models are extended to further enhance the routing reliability while reducing the routing overhead. Besides computing the optimal path for a given benefit value and a given source-destination pair, the utility-based routing can be further extended to compute all optimal paths for all possible benefit values and/or all source-destination pairs. Our utility-based routing can also adapt to different applications and various environments. In the self-organized environment, where network users are selfish, we design a truthful routing, where selfish users have to tell the truth in order to maximize their utilities. We apply our utility-based routing scheme to the data-gathering wireless sensor networks, where a routing scheme is required to transmit data sensed by multiple sensor nodes to a common sink node.
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Date Issued: 2008
PURL: http://purl.flvc.org/FAU/77647
Subject Headings: Wireless communication systems, Security measures, Computer network protocols, Computer algorithms, Computer networks, Security measures
Format: Document (PDF)

Title: A Biometrics Based Secure Communication Scheme for Bluetooth Environment.
Creator: Soni, Puneet, Pandya, Abhijit S., Florida Atlantic University, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: A novel personnel authentication and verification system for devices communicating through Bluetooth protocol has been proposed in this thesis. Unlike existing verification systems which provide password or a PIN as a key, the system uses biometrics features as a key. In the implementation of the scheme, ridges and bifurcation based parameters are derived to generate a 128 bit Bluetooth pairing PIN. In this thesis a unique translational and rotational invariant feature set has been developed....
Show moreA novel personnel authentication and verification system for devices communicating through Bluetooth protocol has been proposed in this thesis. Unlike existing verification systems which provide password or a PIN as a key, the system uses biometrics features as a key. In the implementation of the scheme, ridges and bifurcation based parameters are derived to generate a 128 bit Bluetooth pairing PIN. In this thesis a unique translational and rotational invariant feature set has been developed. These extracted feature data, unlike traditional systems which include the extracted data into payload, is used for device connection by generating the 128 bit PIN. The system performance is analyzed using the pairing PIN for inter-sample and intra-sample recognition. To validate the stability of the system the performance is analyzed with external samples which are not a part of the internal database.
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Date Issued: 2007
PURL: http://purl.flvc.org/fau/fd/FA00012556
Subject Headings: Bluetooth technology--Security measures, Network performance (Telecommunication), Computer network protocols
Format: Document (PDF)

Title: ADAPTIVE HYBRID MULTIPLE ACCESS PROTOCOLS WITH SATELLITE NETWORK APPLICATIONS.
Creator: SARDANA, KARAMVIR., Florida Atlantic University, Ilyas, Mohammad, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: A general and broad new class, ART, consisting of adaptive hybrid multiple access protocols applicable to communication networks sharing a single transmission medium and which behave like A loha-type, R eservation and T DMA basic protocols at low, medium and high throughput respectively, is proposed. Each hybrid protocol in this class is a combination of one protocol, possibly individually adaptive or improved version, from each of these three basic classes of protocols. Specifically, for...
Show moreA general and broad new class, ART, consisting of adaptive hybrid multiple access protocols applicable to communication networks sharing a single transmission medium and which behave like A loha-type, R eservation and T DMA basic protocols at low, medium and high throughput respectively, is proposed. Each hybrid protocol in this class is a combination of one protocol, possibly individually adaptive or improved version, from each of these three basic classes of protocols. Specifically, for satellite communication networks, a sub-class of ART protocols called Adaptive Satellite Hybrid Access (ASHA)+ is proposed.Two ASHA protocols named ASHA1 and ASHA2 that combine the features of S-ALOHA, TDMA-Reservation and TDMA protocols by using a proposed generalized design technique, are described in detail and their analytical models are formulated. The ASHA protocols are analyzed using Equilibrium Point Analysis technique and then their analytical results are presented. A fairly sophisticated and new simulator, modeled basically as a 3-state finite state machine, to simulate the ASHA protocols is designed, described and implemented. A new phenomenon called "protocol oscillations" is observed, in which a hybrid protocol oscillates back and forth between its two adjacent states without accomplishing much, and becomes literally unstable. Traffic measures and threshold values to remedy this problem are discussed. As a by-product of simulator validation, it is found that SRUC protocol, previously thought to be stable at all traffic levels, also suffers from this problem. In addition, some previous simulation results of SRUC protocol are felt not to be correct, and its simulation results that we believe to be correct instead, are given. Detailed simulation results of ASHA protocols are presented and also compared with their analytical results. These results provide a large amount of practical and valuable insight, heretofore unknown, into the workings of adaptive hybrid protocols in general and of ASHA protocols in particular. Moreover, these results show that ASHA protocols provide better delay versus throughput performance over the entire range of throughput compared to any of their individual constituent protocols, and extend the channel capacity to unity. ftn$\sp+$As an aside, ASHA means "hope" in Hindi language.
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Date Issued: 1987
PURL: http://purl.flvc.org/fcla/dt/11907
Subject Headings: Computer network protocols, Artificial satellites in telecommunication
Format: Document (PDF)

Title: Analysis of a new protocol for Bluetooth network formation.
Creator: Madhusoodanan, Vishakh., Florida Atlantic University, Ilyas, Mohammad, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: This research work deals with analyzing the performance of a new protocol for distributed network formation and re-formation in Bluetooth ad-hoc networks. The Bluetooth network may be a piconet or a scatternet consisting of a number of piconets. One of the salient features of this protocol is that, there is no leader election process involved. We can establish simultaneous multiple connections between masters and slaves. The delay in formation of the network is analyzed with respect to the...
Show moreThis research work deals with analyzing the performance of a new protocol for distributed network formation and re-formation in Bluetooth ad-hoc networks. The Bluetooth network may be a piconet or a scatternet consisting of a number of piconets. One of the salient features of this protocol is that, there is no leader election process involved. We can establish simultaneous multiple connections between masters and slaves. The delay in formation of the network is analyzed with respect to the number of devices in the network. Also, the network diameter, the number of piconets formed and the impact of device failures are analyzed. Simulation results show that the protocol handles the failures of the devices with minimum delay except at the time of failure of a master. The scope for further improvement of this protocol is also discussed.
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Date Issued: 2003
PURL: http://purl.flvc.org/fcla/dt/13036
Subject Headings: Bluetooth technology, Computer network protocols
Format: Document (PDF)

Title: Broadband-ISDN signaling: Protocol description and enhancements for future services.
Creator: Vasi, Idris Taher., Florida Atlantic University, Lobo, Andrea, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: Broadband-ISDN Network Architecture and Signaling concepts are described with particular emphasis on Asynchronous Transfer Mode (ATM) technology. A consolidated view of various aspects of B-ISDN/ATM Access and Network Signaling functions, architecture and protocols is presented. Additionally, a suggested evolutionary growth path for the B-ISDN signaling protocols is summarized. This is followed by a high-level comparison of two protocols under consideration for network signaling. The result...
Show moreBroadband-ISDN Network Architecture and Signaling concepts are described with particular emphasis on Asynchronous Transfer Mode (ATM) technology. A consolidated view of various aspects of B-ISDN/ATM Access and Network Signaling functions, architecture and protocols is presented. Additionally, a suggested evolutionary growth path for the B-ISDN signaling protocols is summarized. This is followed by a high-level comparison of two protocols under consideration for network signaling. The result of this evaluation indicates that the requirements of network signaling are best met by a protocol stack based on SS7 concepts. Finally, a set of future B-ISDN and Multimedia services is presented in context of the requirements they would impose on the signaling protocols. Enhancements to the access signaling protocol are proposed for the support of multiconnection and/or multiparty calls. These extensions/enhancements consist of a set of simplified messages, information elements and procedures based on message flows. Evolution and backward compatibility to existing protocols are taken into account while developing the extensions.
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Date Issued: 1994
PURL: http://purl.flvc.org/fcla/dt/15016
Subject Headings: Asynchronous transfer mode, Computer network architectures, Broadband communication systems, Data transmission systems, Computer network protocols, Integrated services digital networks
Format: Document (PDF)

Title: Design and implementation of an energy model for JiST/SWANS simulator.
Creator: Sutaria, Trishla., Florida Atlantic University, Mahgoub, Imad, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: Wireless sensor networks are one of the first real world examples of pervasive computing, the notion that small, smart, and cheap sensing and computing devices will eventually permeate the environment. Sensor networks consist of very large number of energy constrained nodes and to properly evaluate these networks a scalable ad-hoc wireless network simulator with an energy model is needed. Since most of the existing simulators have been designed for ad-hoc network with low scalability they can...
Show moreWireless sensor networks are one of the first real world examples of pervasive computing, the notion that small, smart, and cheap sensing and computing devices will eventually permeate the environment. Sensor networks consist of very large number of energy constrained nodes and to properly evaluate these networks a scalable ad-hoc wireless network simulator with an energy model is needed. Since most of the existing simulators have been designed for ad-hoc network with low scalability they can not be used to accurately simulate sensor networks. The JiST/SWANS simulator is one of the newer simulators that has been developed by Cornell University for simulating ad-hoc networks and is highly scalable which makes it appropriate for use in evaluating sensor networks. Since this simulator lack energy model our objective is to design and implement an energy model for JiST/SWANS so that it can adequately and accurately calculate the amount of energy consumption in the simulation of sensor networks.
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Date Issued: 2005
PURL: http://purl.flvc.org/fcla/dt/13275
Subject Headings: Sensor networks, Wireless LANs, Computer network protocols, Wireless communication systems
Format: Document (PDF)

Title: Connected Dominating Set in Wireless Ad Hoc Networks: Variations with Applications.
Creator: Yang, Shuhui, Wu, Jie, Florida Atlantic University, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: Wireless ad hoc networks (or simply ad hoc networks) are infrastructureless multihop networks consisting of mobile or stationary wireless devices, which include mobile ad hoc networks (MANETs) and wireless sensor networks (WSNs). These networks are characterized by limited bandwidth and energy resources, frequent topology changes, and a lack of central control. These characteristics lead to the research challenges of ad hoc networks. The algorithms designed for ad hoc networks should be...
Show moreWireless ad hoc networks (or simply ad hoc networks) are infrastructureless multihop networks consisting of mobile or stationary wireless devices, which include mobile ad hoc networks (MANETs) and wireless sensor networks (WSNs). These networks are characterized by limited bandwidth and energy resources, frequent topology changes, and a lack of central control. These characteristics lead to the research challenges of ad hoc networks. The algorithms designed for ad hoc networks should be localized, selforganizing, and energy efficient. A connected dominating set (CDS) is frequently used in ad hoc networks as a virtual backbone to support efficient routing, service discovery, and area monitoring. In addition, efficient broadcasting (i.e., finding a small set of forward nodes to ensure full delivery) can be viewed as forming a CDS on-the-fly. The periodically maintained virtual backbone is called a static CDS, and the temporarily formed forward node set is called a dynamk CDS. For efficiency and robustness, the ideal CDS construction algorithm is lightweight, has fast convergence, and minimizes the CDS size. Recently, due to some specific applications and new techniques, the concept of a connected dominating set can be modified or further extended for more efficient usage. This dissertation focuses on the variations with applications of the connected dominating set, designing new concepts, and developing new algorithms for them. A review of CDS construction algorithms for ad hoc networks has been provided at the beginning. An efficient scheme, called Rule K, has been proposed for static CDS construction. Rule K achieves a probabilistic constant upper bound on the expected CDS size, which is currently the best known performance guarantee for localized CDS algorithms. Several CDS algorithms are extended to generate the extended CDS, which exploits the cooperative communication technique to further reduce the size of CDS. A k-coverage set is developed for higher robustness. With the equipment of directional antennas , the transmission can be restricted to some certain directions to reduce interference and energy consumption. The corresponding directional CDS is discussed. Finally, a wireless sensor and actor network (WSAN) is introduced and localized algorithms are designed for it.
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Date Issued: 2007
PURL: http://purl.flvc.org/fau/fd/FA00012580
Subject Headings: Computer network protocols, Wireless communication systems--Design and construction, Mobile computing, Computer algorithms
Format: Document (PDF)

Title: Modeling Perceived Audio for Cellular Phones Based on Field Data.
Creator: Kitbamrung, Pateep, Pandya, Abhijit S., Florida Atlantic University, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: Even though, the current cellular network provides the user with a wide array of services, for a typical user voice communication is still the primary usage. It has become increasingly important for a cellular network provider to provide the customers with the clearest possible end-to-end speech during a call. However, this perceptually motivated QoS is hard to measure. While the main goal of this research has been on the modeling of the perceptual audio quality, this thesis focuses on the...
Show moreEven though, the current cellular network provides the user with a wide array of services, for a typical user voice communication is still the primary usage. It has become increasingly important for a cellular network provider to provide the customers with the clearest possible end-to-end speech during a call. However, this perceptually motivated QoS is hard to measure. While the main goal of this research has been on the modeling of the perceptual audio quality, this thesis focuses on the discovery of procedures for collecting audio and diagnostic data, the evaluation of the captured audio, and the mapping and visualization of the diagnostic and audio related data. The correct application of these modified procedures should increase the productivity of the drive test team as well as provides a platform for the accurate assessment of the data collected.
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Date Issued: 2007
PURL: http://purl.flvc.org/fau/fd/FA00012530
Subject Headings: Computer network protocols, Wireless communication systems--Quality control, Routers (Computer networks), Mobile communication systems--Quality control
Format: Document (PDF)

Wireless communication systems (12)	+ -
Computer algorithms (5)	+ -
Computer network architectures (4)	+ -
Mobile computing (4)	+ -
Bluetooth technology (3)	+ -

Data transmission systems (3)	+ -
Local area networks (Computer networks) (3)	+ -
Computer networks (2)	+ -
Computer networks -- Security measures (2)	+ -
Computer security (2)	+ -
Data encryption (Computer science) (2)	+ -
Internet telephony--Security measures (2)	+ -
Packet switching (Data transmission) (2)	+ -
Routers (Computer networks) (2)	+ -
Telecommunication--Equipment and supplies (2)	+ -
Wireless LANs (2)	+ -
Artificial satellites in telecommunication (1)	+ -
Asynchronous transfer mode (1)	+ -
Bluetooth technology--Security measures (1)	+ -
Body area networks (Electronics) (1)	+ -
Broadband communication systems (1)	+ -
Cache memory (1)	+ -
Code division multiple access (1)	+ -
Coding theory (1)	+ -
Computational complexity (1)	+ -
Computer architecture (1)	+ -
Computer networks--Management (1)	+ -
Computer networks--Security measures (1)	+ -
Cryptography (1)	+ -

Florida Atlantic University (35)	+ -
College of Engineering and Computer Science (26)	+ -
Department of Computer and Electrical Engineering and Computer Science (26)	+ -
Ilyas, Mohammad (9)	+ -
Wu, Jie (6)	+ -

Mahgoub, Imad (4)	+ -
Fernandez, Eduardo B. (3)	+ -
Pandya, Abhijit S. (3)	+ -
Aalo, Valentine A. (2)	+ -
Hsu, Sam (2)	+ -
Pelaez, Juan C. (2)	+ -
Shankar, Ravi (2)	+ -
Akbarian, Hamid. (1)	+ -
Alhalabi, Bassem A. (1)	+ -
Anderson, James M. (1)	+ -
Bagby, Jonathan S. (1)	+ -
Budhathoki, Parshuram (1)	+ -
Callaway, Edgar Herbert, Jr. (1)	+ -
Carryl, Clyde (1)	+ -
Charles E. Schmidt College of Science (1)	+ -
Chauhan, Sanjeev Birbal. (1)	+ -
Chopra, Anju S. (1)	+ -
Department of Mathematical Sciences (1)	+ -
Du, Kemei. (1)	+ -
Eisenbarth, Thomas (1)	+ -
Frost, Sandra Lynn. (1)	+ -
Gandhi, Viraf Rusi. (1)	+ -
Hassan, Ahmed Kamal. (1)	+ -
Huang, Chun-Jung (1)	+ -
Jawhar, Imad. (1)	+ -

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