New transport services for next-generation SONET/SDH systems

Cavendish, Dirceu; Murakami, Koso; Yun, Sangwoon; Matsuda, Osamu; Nishihara, Masato

doi:10.1109/35.1000217

Cited by 62 publications

(37 citation statements)

References 5 publications

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“…In the DAG representation of DPM1, demand gives rise to vertex , and we create another vertex 0. Arc weight represents the cost of mapping demand points , to point (9) As an example, Fig. 2 shows the graph for a DPM1 instance with .…”

Section: An Algorithm For Dpm1mentioning

confidence: 99%

“…A weighted DAG satisfies the concave Monge condition if (10) holds for all . By substituting (9) into (10), it can be shown that the DAG representing any instance of DPM1 obeys the concave Monge condition.…”

Section: An Algorithm For Dpm1mentioning

confidence: 99%

“…where are the arc weights of the DAG corresponding to this instance of DPM1, as defined in (9). The optimal value for the objective function in (5) is obtained as the value of .…”

Section: An Algorithm For Dpm1mentioning

confidence: 99%

See 2 more Smart Citations

On Bandwidth Tiered Service

Rouskas

Baradwaj²

2009

IEEE/ACM Trans. Networking

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Abstract-Many network operators offer some type of tiered service, in which users may select only from a small set of service levels (tiers). Such a service has the potential to simplify a wide range of core network functions, allowing the providers to scale their operations efficiently. In this work, we study a number of problem variants related to service tier selection. Our contributions include: 1) a faster algorithm for obtaining optimal service tiers; 2) a new formulation and optimal algorithm to optimize jointly the number and magnitude of each service tier; and 3) the concept of "TDM emulation" in which all service tiers are multiples of the same (software-configurable) bandwidth unit, and a suite of algorithms to select jointly the basic unit and service tiers. Our work provides a systematic framework for reasoning about and tackling algorithmically the general problem of service tier selection, and has applications to a number of networking contexts, including access networks (e.g., determining the tiers for ADSL, cable modem networks or PONs) and core networks (e.g., LSP sizing for MPLS networks).

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Section: An Algorithm For Dpm1mentioning

confidence: 99%

Section: An Algorithm For Dpm1mentioning

confidence: 99%

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On Bandwidth Tiered Service

Rouskas

Baradwaj²

2009

IEEE/ACM Trans. Networking

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“…This property, along with others such as its bandwidth scalability, infrastructure scalability (both nationally and internationally), proven operation administration management and provisioning functionality, and robust protection and restoration, are the ingredients for its success [6]. Many studies of SDH networks have been carried out since their inception, most of them focused on the capability of SDH equipments and their adaptability to new scenarios [7]. However few studies as the one developed by us have analyzed SDH systems from a network-theoretical perspective.…”

Section: Introductionmentioning

confidence: 99%

On the topology of optical transport networks

Cárdenas

Santiago

Losada

et al. 2010

J. Phys.: Conf. Ser.

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Abstract. Synchronous Digital Hierarchy (SDH) is the standard technology for information transmission in broadband optical networks. Unlike systems with unplanned growth, such as those of natural origin or the Internet network, the SDH systems are strictly planned as rings, meshes, stars or tree-branches structures designed to connect different equipments. In spite of that, we have found that the SDH network operated by Telefónica in Spain shares remarkable topological properties with other real complex networks as a product of its evolution since 1992. In fact, we have found power-law scaling in the degree distribution (N ·P (k) = k −γ ) and small-world networks properties. The complexity found in SDH systems was reproduced by two models of complex networks, one of them considers real planning directives that take into account geographical and technological variables and the other one is based in the compatibility among SDH equipments.

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“…Overall, using TDM emulation, packet-switched networks (e.g., those employing 1 or 10 GE links) can enjoy many of the benefits, in terms of control and management, of a TDM network, but without the data plane rigidities of such a network. Furthermore, this problem has important applications to next-generation SONET networks in which it is possible to use virtual concatenation to allocate bandwidth flexibly in any multiple of 64 Kbps [2].…”

mentioning

confidence: 99%

TDM Emulation in Packet-Switched Networks

Rouskas

Baradwaj

2007

2007 IEEE International Conference on Communications

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Abstract-Many network operators offer some type of tiered service, in which users may select only from a small set of service levels (tiers). In this work, we study the problem of designing a tiered-service network that allocates bandwidth in multiples of a basic bandwidth unit. Such a packet-switched network can enjoy many of the benefits, in terms of control and management, of a TDM network, but without the associated data plane rigidities.

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New transport services for next-generation SONET/SDH systems

Cited by 62 publications

References 5 publications

On Bandwidth Tiered Service

On Bandwidth Tiered Service

On the topology of optical transport networks

TDM Emulation in Packet-Switched Networks

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