Modelling of virtual‐circuit switching nodes with multicast connections

Głąbowski, Mariusz; Stasiak, Maciej; Zwierzykowski, Piotr

doi:10.1002/ett.1256

Cited by 15 publications

(16 citation statements)

References 29 publications

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“…Section VI-A and (17)] and in the system with reservation mechanism [cf. Section VI-A and (19)]. In the case of an Iub link without traffic management mechanism, the value of the parameter is equal to one.…”

Section: Models Of Systems With Multiservice Trafficmentioning

confidence: 99%

“…The process of design and optimization of modern cellular networks should also take into consideration the growing popularity of distributive multimedia services, e.g., IP television (IPTV) [16], [17] and the video on-demand service (VoD) [18] that are based on multicast connections, i.e., connections that are directed to a number of subscribers who can be located in different cells. The problem of the execution of multicast connections in telecommunications and computer networks has been addressed in many works, for example, in [19]- [23]. In [19], a model of a node of the broadband network that services multicast connections is presented, while the work in [20] discusses the implementation of the standard multicast broadcast and multicast subsystem (MBMS) for the execution of multicast connections in the Universal Mobile Telecommunications System (UMTS) network.…”

Section: Introductionmentioning

confidence: 99%

“…The problem of the execution of multicast connections in telecommunications and computer networks has been addressed in many works, for example, in [19]- [23]. In [19], a model of a node of the broadband network that services multicast connections is presented, while the work in [20] discusses the implementation of the standard multicast broadcast and multicast subsystem (MBMS) for the execution of multicast connections in the Universal Mobile Telecommunications System (UMTS) network. In UMTS networks, multicast connections are used in the analytical model of the CAC function [22] located in radio network controller (RNC) and in the model of the radio interface for analysis the influence of intercell interference [21] on the capacity of the interface.…”

Section: Introductionmentioning

confidence: 99%

“…As the basis for the present considerations, the authors have adopted the architecture of the UMTS cellular network. It is assumed that subscribers of the same network are offered multimedia services that are based on multicast connections, understood as a connection of the sender with a selected group of receivers [19]. The following scenario of multicast traffic service will be discussed: • users of a service are in different cells (i.e., cells that are serviced by different base stations); • a multicast connection is executed in the Iub resources that are between the base station (NodeB) and the RNC- Fig.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Traffic Engineering for Multicast Connections in Multiservice Cellular Networks

Parniewicz

Stasiak

Zwierzykowski

2013

IEEE Trans. Ind. Inf.

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The dynamic development of multiservice cellular networks has resulted in significant changes in the system architecture, which, in turn, has led to a broad distribution of many mechanisms and functions responsible for traffic management. These mechanisms take advantage of appropriate algorithms and analytic dependencies to ensure optimal quality of service that can be tailored to the objectives of the network operator. This paper proposes a new analytical model of a cellular network that supports multicast connections in a distributed environment. It is assumed that, in the cells participating in multicast connections, it is possible to apply different and independent traffic management mechanisms such as, for example, threshold mechanisms and resource reservation mechanisms. The proposed method can be used in an evaluation and scientific methods of research in the traffic effectiveness of multicast connections in given load conditions of a cellular network. An application of the method can have a particular significance in designing high-bit-rate multicast services to users in 4G networks. The analytical model proposed in this paper is verified on the basis of simulation examinations of cellular networks with multicast connections. The investigations confirm high accuracy of the model and the correctness of all theoretical assumptions adopted in the study.

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Section: Models Of Systems With Multiservice Trafficmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Traffic Engineering for Multicast Connections in Multiservice Cellular Networks

Parniewicz

Stasiak

Zwierzykowski

2013

IEEE Trans. Ind. Inf.

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“…Given the concurrent nature of the call service in two multiservice systems (radio interface and Iub interface), the article employs the fixed point methodology [42]. This method has already been used in earlier works of the authors (e.g., in [44,[46][47][48][49][50]) in order to take into account the concurrency of service processes that occur in different multi-service systems. The fixed point methodology is characterized by a high effectiveness, e.g., [42].…”

Section: Case Studymentioning

confidence: 99%

Modelling of the access part of a multi-service mobile network with service priorities

Hanczewski

Stasiak

Zwierzykowski

2015

J Wireless Com Network

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This paper presents a methodology for the modelling and optimization of multi-service radio access for universal mobile telecommunications system (UMTS) networks. The paper provides a description of the basis for modelling of a tandem pair: a wideband code division multiple access (WCDMA) interface and a Iub interface. The models involved in the study take into consideration a possibility of setting priorities to a number of selected traffic classes. Particular attention is given to the development of simple computational algorithms that would make it possible to determine the blocking probability for call streams with different priorities. The results of the analytical calculations are then compared with the results of simulation experiments, which confirms the high accuracy of the proposed analytical solutions.

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The extended connection‐dependent threshold model for call‐level performance analysis of multi‐rate loss systems under the bandwidth reservation policy

Moscholios

Logothetis

2011

Int J Communication

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Firstly, we reviewed two extensions of the Erlang multi-rate loss model, whereby we can assess the call-level QoS of telecom networks supporting elastic traffic: (i) the extended Erlang multi-rate loss model, where random arriving calls of certain bandwidth requirements at call setup can tolerate bandwidth compression while in service; and (ii) the connection-dependent threshold model, where arriving calls may have several contingency bandwidth requirements, whereas in-service calls cannot tolerate bandwidth compression. Secondly, we proposed a new model, the extended connection-dependent threshold model. Calls may have alternative bandwidth requirements at call setup and can tolerate bandwidth compression while in service. We proposed a recurrent formula for the efficient calculation of link occupancy distribution and consequently call blocking probabilities, link utilization, and throughput per service class. Furthermore, in the proposed model, we incorporated the bandwidth reservation policy, whereby we can (i) equalize the call blocking probabilities of different service classes, (ii) guarantee specific QoS per service class, and (iii) implement different maximum bandwidth compression/expansion rate per service class so that the network supports both elastic and stream traffic. The accuracy of the new model is verified by simulation. Moreover, the proposed model performs better than the existing models. Finally, we generalize the proposed model by incorporating service classes with either random or quasi-random arrivals.applications whose bandwidth requirement can be compressed, but their service time is not altered (e.g., adaptive audio or video). Calls of fixed bandwidth and service time requirements compose the so-called stream traffic. Despite the fundamental difference between elastic/adaptive traffic and stream traffic, the springboard of call-level modelling of elastic/adaptive traffic is the Erlang multirate loss model (EMLM) [13,14], which is a stream traffic model. In the EMLM, Poisson arriving calls of stream service classes are accommodated to a single link of certain capacity. The available link bandwidth is shared according to the complete sharing (CS) policy [15,16] (calls are accepted for service only when the required bandwidth is available in the link). The calls' service time can be arbitrarily distributed [13]. Stream calls have fixed bandwidth requirement-that is, the assigned bandwidth can change neither during call setup nor during service time. As far as the equilibrium state probabilities are concerned, the EMLM has a product form solution (PFS) ‡ [13]. This fact leads to an accurate calculation of link occupancy distribution and call blocking probabilities (CBP), the key call-level performance metric. Moreover, these calculations are recurrent (Kaufman-Roberts recursion), a feature that broadens the EMLM's applicability range to wired, wireless, or optical networks (e.g., [18][19][20][21][22][23]). The call admission policy has a strong impact on teletraffic models and on the efficie...

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Modelling of virtual‐circuit switching nodes with multicast connections

Cited by 15 publications

References 29 publications

Traffic Engineering for Multicast Connections in Multiservice Cellular Networks

Traffic Engineering for Multicast Connections in Multiservice Cellular Networks

Modelling of the access part of a multi-service mobile network with service priorities

The extended connection‐dependent threshold model for call‐level performance analysis of multi‐rate loss systems under the bandwidth reservation policy

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