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Several conferences have been regularly organized worldwide each year. The organizing process consists of many major steps including call for papers, paper submission, article reviews, author notification and participant registration. The networking computer system could facilitate managing the activities that involve plenty of remote stakeholders. This paper therefore presents an approach to implementing a conference management system using web service technology fused with the concept of business process modeling to support the workflows of conference management tasks. In this work, the REST protocol is selected for invoking the defined conference managing services, whereas Windows Workflow Foundation is exploited for binding all activities into the process flow. The approach enhances the stateless process to the stateful process. Moreover, the process flow is easily reorganized or customized for the subsequent conferences. The component activities, implemented as a service, within the process flow can be reused as well. The fact that services exchange data through XML standard, the implemented system is platform and language independent. [ABSTRACT FROM AUTHOR]

Today, the network bandwidth increased and hardware devices have continuously to enhanced, resulting the vigorous development of the internet. Nowadays, cloud computing is using the lowpower hosts to achieve high reliability that will be to ensure the ability to be better. However, the high capability most with high fault-tolerant by distributed systems, consensus problems will have an impact on the system node to complete the task of it. In previous works, consensus as a variety of connected networks is discussed with fallible components and is proposed a protocol to solve the consensus problem. In this paper, the consensus problem in topology of cloud computing is revisited. The proposed protocol, Dual Consensus Protocol for Cloud Computing (DCPCC), is supported to solve the consensus with malicious and dormant fault with transmission media. The DCPCC protocol can reach consensus with minimal rounds of message exchange and tolerate the maximal number of allowable components. [ABSTRACT FROM AUTHOR]

Swamp poisoning in BitTorrent corrupts files sharing between peers. The worst case causes the swamp unusable as the protocol does not provide sufficient data integrity checking. This paper proposes two solutions in order to resolve this attack. [ABSTRACT FROM AUTHOR]

Current advances in wireless communication, microelectronics, semiconductor technologies, and intelligent sensors have contributed to the development of unobtrusive WBANs. These networks provide long term health monitoring of patients without any constraint in their normal activities. Traditional MAC protocols do not accommodate the assorted WBAN traffic requirements in a power efficient manner. In this paper, we present a brief discussion on the development process of a low power MAC protocol for WBANs. We observe the behavior of a beacon-enabled IEEE 802.15.4 for on-body sensor networks. We further propose a low power technique called traffic based wakeup mechanism for a WBAN that exploits the traffic patterns of the BAN Nodes to ensure power efficient and reliable communication. [ABSTRACT FROM AUTHOR]

An intelligent transportation system (ITS) incorporates a variety of equipment and devices that all work in mutual harmony. However, each piece of equipment or device has its data format and protocol. Therefore, they cannot directly exchange data with each other. In this research, a unified framework for data exchange in an ITS is proposed. The proposed mechanism serves to receive data from several equipments outside of cars, repackages the received data and then dispatches the data to devices inside the cars. Based on this framework, data in equipment and devices can be interchanged (with each other) to accomplish data sharing in an ITS. [ABSTRACT FROM AUTHOR]

The Reference Model for Open Distributed Processing (RM-ODP) defines a framework within which support of distribution, interoperability and portability can be integrated. An ODP system is defined in terms of five viewpoints. The ODP engineering specification consists of a set of engineering objects which communicate via a channel object. The engineering viewpoint defines the ODP transparencies and ODP functions. We focus in this paper on the language of the channel engineering object. We associate to each component state of a global state a set of words that may be contained in channels. We define, for each object, a grammar 'like' context free in which, each rule is of the form X→ u-1Yv, where u-1Yv stand for the residual of the language (L(Y)v) with regard to u. We use context-free grammar properties to make transformations and appear a symbol X in the right member of each X-production to express loop and cycle transitions in the CFSM. The algebraic property of context-free languages is then used to calculate these languages which are minimal solution of a system of equations. These languages can be used to verify some protocol properties such as reachability and deadlock problems. [ABSTRACT FROM AUTHOR]

Wireless Sensor Network is Multihop Self-configuring Wireless Network consisting of sensor nodes. The patterns of movement of nodes can be classified into different mobility models and each is characterized by their own distinctive features. The significance of this study is that there has been very limited investigations of the effect of mobility models on routing protocol performance such as Packet Delivery Ratio, Throughput and Latency in Wireless Sensor Network. In this paper, we have considered the influence of pursue group and random based entity mobility models on the performance of Ad Hoc On-Demand Distance Vector Routing Protocol (AODV) routing protocol. The simulation results show that Pursue Group Mobility model is better than Random Based Entity model. [ABSTRACT FROM AUTHOR]

An ad hoc network is a collection of wireless mobile nodes, frequently forming a network topology without the use of any existing network infrastructure or centralized administration. we compare the performance of the three prominent routing protocols for mobile ad hoc networks, Ad hoc On Demand Distance Vector (AODV), Destination Sequenced Distance Vector(DSDV) and Temporally Ordered Routing Protocols (TORA). We have chosen four performance metrics, such as Average Delay, Packet Delivery Fraction, Routing Load and Varying MANET Size, simulation for the popular routing protocols AODV, DSDV and TORA. The simulations are carried out on NS-2. The performance differentials are analyzed using varying network size and simulation times. The simulation results confirm that AODV performs well in terms of Average Delay, Packet Delivery Fraction. As far as Routing Load concerns TORA performs well. [ABSTRACT FROM AUTHOR]

Due to the increasing multicast applications and high desire for its deployment, it seems that any new technology should support multicast. However, Mpls (Multiprotocol Label Switching) technology which enhances IP packet forwarding capability by using layer 2 switching still does not offer any special solution for multicast support. In this paper, we propose a new mechanism for multicast over Mpls. We separate labels for unicast and multicast traffic. Our method use one label for each multicast tree. Therefore, consumes fewer labels compared to existing proposals and has smaller forwarding tables. [ABSTRACT FROM AUTHOR]

The purpose of this paper is to present a coalition Multi-Agent based model for Real-Time Distribution System (RTDS). This model is based on Contract-Net Protocol (CNP), and an Agent Communication Model is also provided. A two-stage approach is introduced to solve the real time problems: the initial solutions will be generated in stage 1, and its objective is to design least cost routes from one depot to a set of customers, and to service all the customers, while respecting capacity and time window constraints. In stage 2, the Vehicle Agents would decide whether to service new order through negotiation with Scheduling Agent. Finally, the proposed model is detailed, illustrated through a numerical example, experimented on the base of Solomon's benchmark and compared to the optimal solution. [ABSTRACT FROM AUTHOR]

Information on network protocols from a chapter of the book "Network Protocols Handbook," Fourth Edition is presented. The Bandwidth Allocation Protocol (BAP) defines datagrams to coordinate adding and removing individual links in a multi-link bundle. Developed by Cisco Systems, the Director Response Protocol (DRP) refers to a simple User Datagram Protocol (UDP)-based application. Gateway-to-Gateway Protocol (GGP) specifies how core routers should exchange reachability and routing information.

This paper mainly studies the data communication protocols of control area network (CAN) for the vehicle information systems. The objective is to create the environment of the line replaceable unit (LRU) in these systems. The data transmitted from CANBus are one of the valuable resources. There are 8 bytes of them in each transmission. If they are appropriately planned, the data communication protocol can improve the efficiency of the communication, e.g., arbitrations, masks, filters of nodes for CAN can be assigned arbitrarily on line. Even the software of CAN unit can be upgraded and downloaded on line, too. Upon the above concept, this paper will propose a feasible configuration of the vehicle information systems as well as a kind of possible data communication protocols. [ABSTRACT FROM AUTHOR]

This paper proposes the Channel Hopping with Negotiated Pattern (CHNP) protocol, a MAC protocol specially designed for industrial Wireless Sensor Networks (WSN) applications. CHNP tries to achieve the reliable communication under the harsh industrial radio environment in an energy and bandwidth efficient way by fully take advantage of the multi-channel capability of radio chips. To the best of our knowledge, CHNP is the first multi-channel MAC protocol specially designed for industrial WSN applications, which pays special attention to the reliability performance, and makes comprehensive optimization on energy, delay, and throughput performance at the same time. The following contributions are made in CHNP: first, a novel MAC framework based on synchronized channel hopping mechanism is proposed, which provides a good platform to perform the comprehensive performance optimization; second, an effective interference domain division mechanism is designed to achieve higher performance; third, an adaptive transmission mechanism is designed, which can sidestep the bad channels and realize reliable communication even under harsh RF environment ; last, a sniffing mechanism is provided to achieve low energy operation. Simulation results show that the performance of CHNP achieves a significant improvement over the previous related work in the context of industrial WSN applications. [ABSTRACT FROM AUTHOR]

In recent year, Peer-to-Peer (P2P) approach for media streaming has been studied extensively. In comparison to on-demand media streaming, P2P live media streaming faces a much stringent time constraint. In order to improve the performance metrics, such as startup delay, source-to-end delay, and playback continuity, we present PALMS, a P2P approach for live media streaming where node employs gossip based pull and push protocols to receive and forward media data among connected nodes. We present a simple heuristic mechanism for the pull protocol in the selection of media segments and peers. Besides the pull method, a push method is deployed to increase the streaming quality. We also adopt a randomized push protocol in order to increase the probability of media data delivered to connected nodes. We know that the presence of free-riders could degrade the delivered streaming quality. In PALMS, a simple tit-for-tat incentive mechanism is adopted to discourage the existence of free-riders. We conducted simulations and performance comparisons for PALMS. Experimental results demonstrate that PALMS can deliver better streaming quality and more resilience towards the heterogeneity of network bandwidths as compared to some of the existing protocols. [ABSTRACT FROM AUTHOR]

In MAS, agent interaction protocol has become the basis of coordination, cooperation and communication among agents. Since the semantics of agent interaction protocol in UML or AUML faces ambiguous and inconsistent problems, the paper presents an Extended Colored Petri Net(ECPN) as agent protocol modeling mechanism. By means of ECPN techniques presented in the paper, we can model agent interaction mechanism, validate the model's properties, and implement feasible transition to executable processes. The relevant techniques are demonstrated by a FIPA Protocol example in details. [ABSTRACT FROM AUTHOR]

Peer-to-Peer (P2P) systems and Grids share the same focus on harnessing resources across large-scale multi-administrative domains though having many different characteristics. The way of using P2P approaches to realize decentralized P2P Grid system extends the resource scalar exponentially. This paper presents a layered resource space model that has a good feature in expansibility, autonomy, modularity and loose coupling. In terms of this model a Bootstrap based on Distributed Hashing Table (DHT) is added into P2P Grid and a Peer Service is implemented in every node. The semantic-based resource management architecture and RPC protocols are discussed. A prototype experiment is realized with BT tracker functionality. This model could be used in P2P Grid systems and heterogeneous P2P systems as a reference for resource sharing and collaboration. The contribution of this paper is to provide a semantic-based solution to resource discovery, search and integration that will enable the SOA revolution in P2P Grid. [ABSTRACT FROM AUTHOR]

This paper mainly studies the data communication protocols of control area network (CAN) for the vehicle information systems. The objective is to create the environment of the line replaceable unit (LRU) in these systems. The data transmitted from CANBus are one of the valuable resources. There are 8 bytes of them in each transmission. If they are appropriately planned, the data communication protocol can improve the efficiency of the communication, e.g., arbitrations, masks, filters of nodes for CAN can be assigned arbitrarily on line. Even the software of CAN unit can be upgraded and downloaded on line, too. Upon the above concept, this paper will propose a feasible configuration of the vehicle information systems as well as a kind of possible data communication protocols. [ABSTRACT FROM AUTHOR]

In recent years, there has been a growing interest in wireless sensor networks. One of the major issues in wireless sensor network is developing an energy-efficient routing protocol. Since the sensor nodes have limited available power, energy conservation is a critical issue in wireless sensor network for nodes and network life [1]. LEACH is very effective in enhancing nodes' lifetime from routing's aspect. In this paper we propose a novel routing algorithm, pseudo LEACH, which copes with limited transmission range of each node and brings in a pseudo cluster header to improve the energy efficiency of LEACH. The simulation results are shown at the end to verify the performance of our pseudo LEACH. [ABSTRACT FROM AUTHOR]

This paper proposes the Channel Hopping with Negotiated Pattern (CHNP) protocol, a MAC protocol specially designed for industrial Wireless Sensor Networks (WSN) applications. CHNP tries to achieve the reliable communication under the harsh industrial radio environment in an energy and bandwidth efficient way by fully take advantage of the multi-channel capability of radio chips. To the best of our knowledge, CHNP is the first multi-channel MAC protocol specially designed for industrial WSN applications, which pays special attention to the reliability performance, and makes comprehensive optimization on energy, delay, and throughput performance at the same time. The following contributions are made in CHNP: first, a novel MAC framework based on synchronized channel hopping mechanism is proposed, which provides a good platform to perform the comprehensive performance optimization; second, an effective interference domain division mechanism is designed to achieve higher performance; third, an adaptive transmission mechanism is designed, which can sidestep the bad channels and realize reliable communication even under harsh RF environment ; last, a sniffing mechanism is provided to achieve low energy operation. Simulation results show that the performance of CHNP achieves a significant improvement over the previous related work in the context of industrial WSN applications. [ABSTRACT FROM AUTHOR]

In recent year, Peer-to-Peer (P2P) approach for media streaming has been studied extensively. In comparison to on-demand media streaming, P2P live media streaming faces a much stringent time constraint. In order to improve the performance metrics, such as startup delay, source-to-end delay, and playback continuity, we present PALMS, a P2P approach for live media streaming where node employs gossip based pull and push protocols to receive and forward media data among connected nodes. We present a simple heuristic mechanism for the pull protocol in the selection of media segments and peers. Besides the pull method, a push method is deployed to increase the streaming quality. We also adopt a randomized push protocol in order to increase the probability of media data delivered to connected nodes. We know that the presence of free-riders could degrade the delivered streaming quality. In PALMS, a simple tit-for-tat incentive mechanism is adopted to discourage the existence of free-riders. We conducted simulations and performance comparisons for PALMS. Experimental results demonstrate that PALMS can deliver better streaming quality and more resilience towards the heterogeneity of network bandwidths as compared to some of the existing protocols. [ABSTRACT FROM AUTHOR]

Internet Protocol Next Generation Label Switching (IPngLS) is seen as another interesting approach satisfying the ever-increasing Internet users' multimedia demands as well as the future IPv6 addressing. With the concept of mapping the MPLS shim header into the IPv6 header, IPngLS provides the decrease of packet overhead which results in the better network performance. We have modified MPLS network simulator (MNS) extended from network simulator (ns) for IPngLS network simulator. The validation of our simulator is carried out by comparing with result from the approximate calculation with the timing diagram. After that, the performance study of IPngLS in comparison with MPLS is done by simulation. We evaluate the performance of multiple traffic sources based on throughput, bandwidth utilization, dropped packet and mean end-to-end delay. Our simulation results show that IPngLS provides better performance 1.695 %, based on throughput and bandwidth utilization, than MPLS at the very high traffic load, while the average of dropped packet and mean end-to-end of IPngLS is lower than MPLS 2.049 % and 1.491 %, respectively. [ABSTRACT FROM AUTHOR]

An ad hoc network is a collection of wireless mobile nodes dynamically forming a temporary network without the use of any existing network infrastructure or centralized administration. Due to the limited transmission range of wireless network interfaces, multiple networks "hops" may be needed for one node to exchange data with another across the network. In recent years, a variety of new multicasting routing protocols targeted specifically at this environment have been developed, but little performance information on each protocol and no realistic performance comparison in different network scenarios are available .The multicast operation of the Ad hoc On-Demand Distance Vector (AODV) routing protocol (MAODV) is intended for use by mobile nodes in an ad hoc network. The protocol behavior is unpredictable and changes drastically with respect to change in the network scenarios. In this detailed packet-level simulation study is carried out using network simulator 2 and show when the network is stabilized under varying mobility and traffic scenarios. Our simulation results shows that change in network scenario will impact the performance of routing protocols in ad hoc networks. [ABSTRACT FROM AUTHOR]

Devices in mobile ad hoc networks depend on the cooperation of other nodes for relaying of packets in the network. Medium Access Control protocols such as IEEE 802.11 are efficient with upper layer protocols only if the nodes adhere to the protocol and cooperate. Non-cooperating nodes may delay forwarding of frames or drop the frames altogether. This might be advantageous for individual nodes (from the point of view of saving energy) but it hampers the network as a whole. Such non-cooperating nodes disrupt communication between the cooperating nodes. We present a solution with a part modification of the IEEE 802.11 protocol to detect and penalize such non-cooperating nodes and thus making it unattractive to deny cooperation. For this we associate each node with an index, the Fairness Index, which is dynamically mapped to the behavior of the associated node. We not only penalize them but also ensure reliable routing throughout. In our scheme we also allow a convicted node to return to the mainstream if it shows its eagerness to cooperate. We prove the same using simulation results. [ABSTRACT FROM AUTHOR]

The article describes the design challenges and technical hurdles facing successful deployment of wireless Internet Protocol (IP) telephony. New wireless network architecture will take advantage of the service and management flexibility offered by IP, allowing service providers to offer multimedia and data content to their wireless subscribers. The greatest challenges facing the successful deployment of wireless IP telephony are threefold: securing reliable guarantees of service quality on par with traditional cellular systems, obtaining spectral efficiencies over the wireless channel that will not hinder system capacity or service quality, and effectively providing seamless connections to mobile users.

The article focuses on the combination of wireless communications and asynchronous transfer mode (ATM), referred to as wireless ATM, which aims at providing freedom of mobility with service advantages and quality-of-service guarantees. Wireless ATM is mainly considered for wireless access to a fixed ATM network, in this sense, it is applicable mostly to wireless LANs. The article describes the basic issues and solutions for the medium access control. It also discusses some important protocols and their effectiveness in servicing ATM traffic. The article analyzes the required signaling enhancements for call and mobility control.

The article focuses on transport protocols for optical networks. The term "transport protocol," as used in the article and in the context of computer communication systems, refers to an end-to-end protocol. The article presents features of optical networks that are particularly salient to transport protocols. It provides an overview of the generic functions that transport protocols are expected to provide, and discusses how these functions are affected by the use of optical networks. The article describes specific transport protocols that have been used with optical networks.

The article focuses on features of transmission control protocol (TCP) as a reliable transport protocol. TCP provides a reliable, connection-oriented, byte stream service between applications. TCP provides reliability and ensures end-to-end delivery of data by adding services on top of IP. TCP treats the actual data it sends as an unstructured stream of bytes. TCP keeps track of each byte that is sent/received. TCP enables many application processes within a single device to use the TCP services simultaneously, this is termed TCP multiplexing.

The article provides an overview of digital transport formats, synchronous optical network (SONET) and synchronous digital hierarchy (SDH). SONET and SDH are similar digital transport formats that were developed for the specific purpose of providing a reliable and versatile digital structure to take advantage of the higher bit rate capacity of optical fiber. SONET is based on a synchronous digital signal comprised of 8-bit octets, which are organized into a frame SDH bit rates are built on the basic rate of synchronous transport module 1 of 155.520 Mbps.

This article presents information on communication networks. A number of communication networks use a broadcast (or multiaccess) transmission, medium, where the signal transmitted by a node (station) is received by every other node that is in the listening area of the transmitting node. The constraints vary by technology and also by network type. The general task of the medium access control (MAC) protocol is to organize the transmissions such that under the given constraints successful communication takes place over the broadcast transmission medium. A large number of MAC protocols have been proposed in the literature, and quite a few of them are standardized and widely deployed in different commercial networks.

The article focuses on session initiation protocol (SIP). SIP is a signaling protocol for setting up, tearing down and modifying multimedia sessions. These sessions can consist of any number of media, such as audio, video and shared applications and can be either unicast or multicast. SIP was originally designed to be used with multicast multimedia conferences in the Internet, allowing participants to invite others to join the multicast group. Cable carriers can also use SIP as the signaling protocol in the Distributed Call Signaling version of the PacketCable specification.

The article focuses on importance of satellites in IP networks. Satellites have been an important element of telecommunications networks for many years in providing long-distance telephony and television broadcasting. This article will review the satellite communications systems and introduce a new era for satellite communications toward broadband satellite systems and satellite-for-the Internet systems. This means that the satellite is changing its traditional role as being simply a relay in space into becoming an active element similar to a switch or a router in terrestrial networks.

The article focuses on optical synchronous code-division multiple access (CDMA) systems. CDMA is a multiple access protocol that is efficient with low traffic and has zero access delay. Especially direct detection optical CDMA systems have been investigated widely to apply for highspeed local area networks, because they allow multiple users to access the network simultaneously. In the transmitter and receiver, low-cost devices with high cost performance and high reliability, such as Fabry-Perot laser diode and avalanche and pin photodiodes, are available.

This article presents information on multiprotocol label switching (MPLS) in communication systems. MPLS allows the setup of label-switched paths (LSPs) between Internet Protocol (IP) routers to avoid the IP forwarding in the intermediate routers. IP packets are tagged with labels. The initial goal of label-based switching was to increase the throughput of IP packet forwarding. In regular non-MPLS IP networks, packets are forwarded in a hop-by-hop manner. This means that the forwarding decision of a packet traversing the network is based on the lookup of the destination in the local routing table.

The article presents information related to the Internet protocol (IP) telephony. IP telephony systems are designed to transmit packetized voice using the Internet Protocol (IP). IP telephony networks can offer video, high-quality audio, and directory services, in addition to services traditionally offered by the public switched telephone network (PSTN). Enterprises implement IP telephony networks to avoid the cost of supporting both a circuit switched network and a data network. Individual users save money by using IP telephony software to bypass long distance charges in the PSTN. IP telephony makes use of statistical multiplexing and voice compression to support increased efficiency over circuit-switched networks. However, many IP networks do not support quality-of-service guarantees.

This article focuses on wireless protocols. RS-ISMA is a wireless access protocol designed for wireless multimedia communications and implemented in the BRAIN indoor-LAN prototype. In addition, a compact RF module composed of flat antennas and an MMIC was employed for each remote station and AP. The use of large capacity FPGA decreased the number of signal processing boards. System parameters such as the packet format were optimized for IP datagram transport to support all applications based on IP. The HAMAC protocol uses a super frame that is divided into two frames, the downlink frame and the uplink frame.

Wireless data networks present a more constrained communication environment compared to wired networks. The Wireless Application Protocol (WAP) architecture provides a scalable and extensible environment for application development for mobile communication devices. The WAP protocol stack has a layered design, and each layer is accessible by the layers above, and by other services and applications. The WAP layered architecture enables other services and applications to use the features of the WAP stack through a set of well-defined interfaces.

This article focuses on wireless local area networks. Virtual LANs provide support for workgroups that share the same servers and other resources over the network. A flexible broadcast scope for workgroups is based on Layer 3 (network). This solution uses multicast addressing, mobility support, and the Dynamic Host Configuration Protocol for the IP. Broadband wireless access is based on the TLN concept in which subscribers are grouped into microcells, which are embedded into a macrocell. The microcells coverage uses local repeaters operating at 5.8 GHz fed by a BS through 40-GHz links.

The article focuses on the Carrier-sense multiple access (CSMA) protocols. Communication of information between two or more parties takes place over a variety of physical media called channels. Such channels can be simple twisted pair cables, coaxial and optical cables, or free space. Sometimes the channel is dedicated to a specific transmitter-receiver pair. This may be the case when two parties establish a telephone conversation over a dedicated cable. Channels of this type are called point-to-point.

The article focuses on the ALOHA methods, which originated at the University of Hawaii as a means for multiple users to send short data packets via radio transmission over a common channel to a central station, in a largely uncoordinated manner. ALOHA is very effective in light traffic situations; the sender can use the whole channel, and send very rapidly, usually without collision. With heavier traffic, ALOHA suffers from problems of efficiency and stability. Various protocols and signal processing methods have been invented to alleviate these problems. These include collision resolution algorithms, control of arrival rate and retransmission time, reservation ALOHA and multichannel ALOHA.

Chapter 8 covers the application of ATM signalling by other protocols and applications: Classical IP over ATM (CLIP), LAN Emulation over ATM (LANE) Multi Protocol Over ATM (MPOA) and Sylvia, which is a multimedia application that uses UNI signalling [ABSTRACT FROM PUBLISHER]

Chapter 7 covers the Integrated Local Management Interface (ILMI) that is used to exchange status and configuration information, such as registered ATM network prefixes, registered ATM addresses, VPCs and VCCs. The relation to the Simple Network Management Protocol (SNMP) is explained. The used database structure (MIB) is introduced. [ABSTRACT FROM PUBLISHER]

Chapter 6 describes the Private Network Node Interface (PNNI) protocol family that is used in private ATM networks. The PNNI protocol family consists of two protocols that are covered here: the PNNI routing protocol and the PNNI signalling protocol. [ABSTRACT FROM PUBLISHER]

Chapter 5 describes the Signalling ATM Adaptation Layer (SAAL), which is a transport protocol for signalling messages. Additional protocols are involved: SSCOP and SSCF. [ABSTRACT FROM PUBLISHER]

Chapter 4 covers the different types of ATM addresses: ATM Service Access Point (NSAP), ATM End System Addresses (AESA), E.164 addresses, ATM anycast addresses and address aggregation. [ABSTRACT FROM PUBLISHER]

Chapter 3 covers the UNI signalling protocol that is running between an ATM end system and the first ATM switch. This protocol is used to manage connections between ATM end systems. i.e. to establish, modify and release them. Protocol messages, connection states, point-to-point calls, point-to-multipoint calls and the interface to other layers are covered. [ABSTRACT FROM PUBLISHER]

Chapter 2 provides a complete overview of the interworking of all signalling interfaces and protocols covered in the book. This comprises end systems and switches with ILMI, UNI and PNNI. [ABSTRACT FROM PUBLISHER]

The TUP and ISUP protocols are SS7 protocols for trunk-related exchange actions (mainly call control). The SS7 signaling takes place between the exchanges at the ends of a TUP or ISUP trunk. Starting with this chapter, the focus is on SS7 signaling for operations that are not trunk-related. [ABSTRACT FROM PUBLISHER]

Web Service is a software component invoked over the Web via an XML[1] message that follows the Simple Object Access Protocol (SOAP[2]), which is a simple XML based protocol to let applications exchange information over HTTP and to transport the messages using open protocols standard. Web Services are based on distributed technology and provide standard means of interoperating between different software applications across and within organizational boundaries with the use of XML. The purpose of web service selection is to select optimal web service for a particular task. When dynamic discovery is used in Web Services, it is common that the result of the discovery contains more than one provider. The purpose of this work is to develop an approach for secured, dynamic and transparent service selection and to evaluate the proposed architecture in terms of what selection techniques should be applied. [ABSTRACT FROM AUTHOR]

Transmission Control Protocol (TCP) includes eleven variants-Tahoe, FullTcp, TCP/Asym, Reno, Reno/Asym, Newreno, Newreno/Asym, Sack1, Fack, Vegas and VegasRBP as source and five-TCPSink, TCPSink/Asym, Sack1, DelAck and Sack1/DelAck as destination, implemented in Network Simulator (NS-2). Performance of TCP versions indicates how they respond to various network parameters-propagation delay, bandwidth, TTL (time to live), RTT (round trip time), rate of packet sending and so on. Such analysis is immensely in need to be aware of which TCP is better for a specific criterion, wherefrom an appropriate one will be selected in respective network to optimize traffic goal. But yet no complete summary is available as we've investigated hereby thoroughly. Recently published researches considered Congestion Window, Throughput, and Delay for five variants only. This paper covers all the supported variants to observe their nature regarding to five new perspectives in details. [ABSTRACT FROM AUTHOR]

An ad hoc network is a collection of wireless mobile nodes dynamically forming a temporary network without the use of any existing network infrastructure or centralized administration. A number of routing protocols like Destination-Sequenced Distance-Vector (DSDV), Adhoc On-Demand Distance Vector Routing (AODV), Dynamic Source Routing (DSR) and Temporally Ordered Routing Algorithm (TORA) have been implemented. In this paper, a comprehensive attempt has been made to compare the performance of two prominent on-demand reactive routing protocols for mobile ad hoc networks: DSR and AODV, along with the traditional proactive DSDV protocol. A simulation model with MAC and physical layer models have been used to study interlayer interactions and their performance implications. The On-demand protocols, AODV and DSR perform better than the table-driven DSDV protocol. Although DSR and AODV share similar on-demand behavior, the differences in the protocol mechanics can lead to significant performance differentials. The performance differentials have been analyzed by varying network load, mobility, and network size. [ABSTRACT FROM AUTHOR]