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Communications and Networks, Journal of

Issue 4 • Date Dec. 2007

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Displaying Results 1 - 25 of 30
  • [Front cover]

    Publication Year: 2007 , Page(s): c1
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    Freely Available from IEEE
  • [Front inside cover]

    Publication Year: 2007 , Page(s): c2
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  • Routing, path computation and traffic engineering in future Internet

    Publication Year: 2007 , Page(s): 345 - 349
    Request Permissions | Click to expandAbstract | PDF file iconPDF (75 KB) |  | HTML iconHTML  

    The current Internet architecture with integrated routing and forwarding planes has served the community well for the past three decades. The significant growth in Internet traffic and the need for support of very diverse sources has spurned research interest in new architectures. In particular, the next-generation Internet must cater to a variety of services with dynamically changing traffic dema... View full abstract»

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  • On inferring and characterizing Internet routing policies

    Publication Year: 2007 , Page(s): 350 - 355
    Request Permissions | Click to expandAbstract | PDF file iconPDF (419 KB) |  | HTML iconHTML  

    Border gateway protocol allows autonomous systems (ASes) to apply diverse routing policies for selecting routes and for propagating reachability information to other ASes. Although a significant number of studies have been focused on the Internet topology, little is known about what routing policies network operators employ to configure their networks. In this paper, we infer and characterize rout... View full abstract»

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  • On QoS routing and path establishment in the presence of imprecise state information

    Publication Year: 2007 , Page(s): 356 - 367
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1436 KB) |  | HTML iconHTML  

    In large networks, maintaining precise global network state information is impossible. The imprecise network state information has significant impacts on Quality-of-Service (QoS) routing and path establishment. In this paper, we develop analytical models for investigating the QoS routing schemes that are designed to tolerate imprecise network state information, and study the performance of various... View full abstract»

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  • SPARK: A smart parametric online RWA algorithm

    Publication Year: 2007 , Page(s): 368 - 376
    Cited by:  Papers (1)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (685 KB) |  | HTML iconHTML  

    The large potential bandwidth available in wavelength-division multiplexed optical networks makes this technology of crucial importance for satisfying the ever increasing capacity requirements of the next-generation Internet. In this scenario, the routing and wavelength assignment (RWA) problem that concerns deter- mining the optical paths and wavelengths to be used for connection establishment in... View full abstract»

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  • An enhanced dynamic multilayer routing for networks with protection requirements

    Publication Year: 2007 , Page(s): 377 - 382
    Request Permissions | Click to expandAbstract | PDF file iconPDF (968 KB) |  | HTML iconHTML  

    This paper presents a new enhanced dynamic and multi-layer protection (DMP) routing scheme that considers cooperation between packet and wavelength switching domain in order to minimize the resource consumption. The paper describes the architecture of the multilayer network scenario and compares the proposed algorithm with other routing mechanisms applying protection at the IP/multi-protocol label... View full abstract»

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  • Routing and forwarding with flexible addressing

    Publication Year: 2007 , Page(s): 383 - 393
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1430 KB) |  | HTML iconHTML  

    We present a new network-layer architecture that provides generalized addressing. The forwarding infrastructure is independent of the addressing architecture, so multiple addressing architectures can be used simultaneously. We compare our solution with the existing Internet protocols for unicast and multicast services, given the address assignment used in the Internet. By means of an extensive sim... View full abstract»

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  • Lightpaths routing for single link failure survivability in IP-over-WDM networks

    Publication Year: 2007 , Page(s): 394 - 401
    Cited by:  Papers (8)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (820 KB) |  | HTML iconHTML  

    High speed all optical network is a viable option to satisfy the exponential growth of internet usage in the recent years. Optical networks offer very high bit rates and, by employing technologies like internet protocol over wavelength division multiplexing (IP-over-WDM), these high bit rates can be effectively utilized. However, failure of a network component, carrying such high speed data traffi... View full abstract»

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  • Optimal bandwidth assignment for packet rings

    Publication Year: 2007 , Page(s): 402 - 407
    Request Permissions | Click to expandAbstract | PDF file iconPDF (877 KB) |  | HTML iconHTML  

    The network throughput is an important performance criteria for the packet ring networks. Since maximizing the network throughput can lead to severe bias in bandwidth allocation among all flows, fairness should be imposed to prevent bandwidth starvation. The challenge here, therefore, is the joint optimization of the network throughput and fairness. In this paper, we present the optimal bandwidth ... View full abstract»

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  • Dynamic network provisioning for time-varying traffic

    Publication Year: 2007 , Page(s): 408 - 418
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1137 KB) |  | HTML iconHTML  

    In this paper, we address the question of dynamic net- work provisioning for time-varying traffic rates, with the objective of maximizing the system throughput. We assume that the network is capable of providing bandwidth guaranteed traffic tunnels for an ingress-egress pair and present an approach that (1) updates the tunnel routes and (2) adjusts the tunnel bandwidths, in an incremental, adaptiv... View full abstract»

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  • Variable aggregation in the ILP design of WDM networks with dedicated protection

    Publication Year: 2007 , Page(s): 419 - 427
    Cited by:  Papers (1)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (710 KB) |  | HTML iconHTML  

    In wavelength-division-multiplexing (WDM) networks a link failure may cause the failure of several high-bit-rate optical channels, thereby leading to large data loss. Recently, various protection and restoration mechanisms have been proposed to efficiently deal with this problem in mesh networks. Among them, dedicated path protection (DPP) is a promising candidate because of its ultra-fast restora... View full abstract»

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  • Framework for end-to-end optimal traffic control law based on overlay mesh

    Publication Year: 2007 , Page(s): 428 - 437
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1536 KB) |  | HTML iconHTML  

    Along with the development of network, more and more functions and services are required by users, while traditional network fails to support all of them. Although overlay is a good solution to some demands, using them in an efficient, scalable way is still a problem. This paper puts forward a framework on how to construct an efficient, scalable overlay mesh in real network. Main differences betwe... View full abstract»

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  • Optimum QoS classes in interworking of next generation networks

    Publication Year: 2007 , Page(s): 438 - 445
    Request Permissions | Click to expandAbstract | PDF file iconPDF (730 KB) |  | HTML iconHTML  

    In this paper, we consider the problem of optimum selection of quality-of-service (QoS) classes in interworking between the networks in a next-generation-network (NGN) environment. After introducing the delay-cost and loss-cost characteristics, we discuss the time-invariant (TI) and time-variant (TV) scenarios. For the TI case, we show that under nearly lossless transmission condition, each networ... View full abstract»

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  • A “GAP-model” based framework for online VVoIP QoE measurement

    Publication Year: 2007 , Page(s): 446 - 456
    Cited by:  Papers (14)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (596 KB) |  | HTML iconHTML  

    Increased access to broadband networks has led to a fast-growing demand for voice and video over IP (VVoIP) applications such as Internet telephony (VoIP), videoconferencing, and IP television (IPTV). For pro-active troubleshooting of VVoIP performance bottlenecks that manifest to end-users as performance impairments such as video frame freezing and voice dropouts, network operators cannot rely on... View full abstract»

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  • ASTAS: Architecture for scalable and transparent anycast services

    Publication Year: 2007 , Page(s): 457 - 465
    Cited by:  Papers (3)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1022 KB) |  | HTML iconHTML  

    Native information provider (IP) anycast suffers from routing scalability issues and the lack of stateful communication support. For this reason, we propose architecture for scalable and transparent anycast services (ASTAS), a proxy-based architecture that provides support for stateful anycast communications, while retaining the transparency offered by native anycast. Dynamic re- source assignment... View full abstract»

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  • Performance of SC-FDE system in UWB communications with imperfect channel estimation

    Publication Year: 2007 , Page(s): 466 - 472
    Cited by:  Papers (1)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (821 KB) |  | HTML iconHTML  

    Single carrier block transmission with frequency domain equalization (SC-FDE) has been shown to be a promising candidate in ultra-wideband (UWB) communications. In this paper, we analyze the performance of SC-FDE over UWB communications with channel estimation error. The probability density functions of the frequency domain minimum mean-squared error (MMSE) equalizer taps are derived in closed for... View full abstract»

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  • Energy-efficiency and transmission strategy selection in cooperative wireless sensor networks

    Publication Year: 2007 , Page(s): 473 - 481
    Cited by:  Papers (3)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (724 KB) |  | HTML iconHTML  

    Energy efficiency is one of the most critical concerns for wireless sensor networks. By allowing sensor nodes in close proximity to cooperate in transmission to form a virtual multiple-input multiple-output (MIMO) system, recent progress in wireless MIMO communications can be exploited to boost the system throughput, or equivalently reduce the energy consumption for the same throughput and BER tar... View full abstract»

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  • Frequency domain processing techniques for pulse shape modulated ultra wideband systems

    Publication Year: 2007 , Page(s): 482 - 489
    Request Permissions | Click to expandAbstract | PDF file iconPDF (871 KB) |  | HTML iconHTML  

    In this paper, two frequency domain signal processing techniques for pulse shape modulation (PSM) ultra wideband (UWB) systems are presented. Firstly, orthogonal detection of UWB PSM Hermite pulses in frequency domain is addressed. It is important because time domain detection by correlation-based receivers is severely degraded by many sources of distortion. Pulse- shape, the information conveying... View full abstract»

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  • Damping BGP route flaps

    Publication Year: 2007 , Page(s): 490 - 498
    Request Permissions | Click to expandAbstract | PDF file iconPDF (2141 KB) |  | HTML iconHTML  

    BGP route flap damping (RFD) was anecdotally considered to be a key contributor to the stability of the global Internet inter-domain routing system. However, it was recently shown that RFD can incorrectly suppress for substantially long periods of time relatively stable routes, i.e., routes that only fail occasionally. This phenomenon can be attributed to the complex interaction between BGP path e... View full abstract»

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  • An efficient algorithm for dynamic shortest path tree update in network routing

    Publication Year: 2007 , Page(s): 499 - 510
    Cited by:  Papers (2)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1469 KB) |  | HTML iconHTML  

    Shortest path tree (SPT) construction is essential in high performance routing in an interior network using link state protocols. When some links have new state values, SPTs may be rebuilt, but the total rebuilding of the SPT in a static way for a large computer network is not only computationally expensive, unnecessary modifications can cause routing table instability. This paper presents a new u... View full abstract»

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  • QoS-guaranteed realtime multimedia service provisioning on broadband convergence network (BcN) with IEEE 802.11e wireless LAN and Fast/Gigabit Ethernet

    Publication Year: 2007 , Page(s): 511 - 523
    Request Permissions | Click to expandAbstract | PDF file iconPDF (4354 KB) |  | HTML iconHTML  

    In broadband convergence network (BcN), heterogeneous broadband wired & wireless subnetworks and various terminal equipments will be interconnected. In order to provide end-to-end realtime multimedia services on such heterogeneous networking environment, as a result, two major problems should be resolved: i) Multimedia session establishment & negotiation that adjusts the differences in the... View full abstract»

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  • Reviewer list for 2007

    Publication Year: 2007 , Page(s): 524 - 526
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  • Author index

    Publication Year: 2007 , Page(s): 1 - 4
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  • Call for papers

    Publication Year: 2007 , Page(s): 1
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    Freely Available from IEEE

Aims & Scope

The Journal of Communications and Networks is published six times per year, and is committed to publishing high-quality papers that advance the state-of-the-art and practical applications of communications and information networks.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
H. Vincent Poor
Princeton University