D. Parniewicz - Academia.edu (original) (raw)

Papers by D. Parniewicz

PHOSPHORUS deliverable D7. 1.3: Annual Report on Dissemination Activities

An Approximate Model of the WCDMA Interface Servicing a Mixture of Multi-rate Traffic Streams with Priorities

Lecture Notes in Computer Science, 2008

The paper presents an approximate method for blocking probability determination in the WCDMA inte... more The paper presents an approximate method for blocking probability determination in the WCDMA interface of the UMTS network with priorities. In our considerations we use a new model of the full-availability group servicing multi-rate traffic with priorities. In the proposed ...

Analytical Model of Traffic Compression in the UMTS Network

Lecture Notes in Computer Science, 2009

... Keywords: analytical model, traffic compression, UMTS, HSDPA. ... Performance Indicator) para... more ... Keywords: analytical model, traffic compression, UMTS, HSDPA. ... Performance Indicator) parameters that serve as determinants in the process of network dimensioning and optimization. ... have been devoted to traffic modelling in cellular systems with the WCDMA radio interface [4 ...

Proceedings of the 2014 ACM SIGCOMM workshop on Distributed cloud computing - DCC '14, 2014

OpenFlow is a leading standard for Software-Defined Networking (SDN) and has already played a sig... more OpenFlow is a leading standard for Software-Defined Networking (SDN) and has already played a significant role in reshaping network infrastructures. However, a wide range of existing provider domains is still not equipped with a framework that supports wider deployment of an OpenFlow-based control plane beyond Ethernetdominated networks. We address this gap by introducing a Hardware Abstraction Layer (HAL) which can transform legacy network elements into OpenFlow capable devices. This paper details the functional architecture of HAL, discusses the key design aspects and explains how HAL can support a number of network device classes. In addition, this paper presents the implementation details of HAL for hardware platforms such as DOCSIS (Data over Cable Service Interface Specification) and DWDM (Dense Wavelength Division Multiplexing) which have so far received little attention by the OpenFlow research community despite their wide real-world deployment.

Global Telecommunications Conference, . GLOBECOM . IEEE, 2005

Performance evaluation of the MOQ switch recently proposed by us is discussed in this paper. In t... more Performance evaluation of the MOQ switch recently proposed by us is discussed in this paper. In the MOQ switch both the switch fabric and buffers can operate at the same speed as input and output ports. This solution does not need any speedup in the switch fabric as well as any matching algorithms between inputs and outputs. The description and

Model of the k-cast connections in mobile networks

Traffic engineering for multicast connections in multiservice cellular networks

The dynamic development of multiservice cellular networks has resulted in significant changes in ... more 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

In this paper, a new analytical method of blocking probability calculation in multi-service cellu... more In this paper, a new analytical method of blocking probability calculation in multi-service cellular systems with multicast connections is proposed. The new analytical method considers the influence of both WCDMA and Iub interfaces on multicast traffic streams characteristics. The basis for the discussed method is a model of the fullavailability group with traffic compression and the fixedpoint methodology. The results of the analytical calculations of the cellular system with multicast connections are compared with the results of the simulation experiments, which confirms the accuracy of the proposed method. The proposed scheme can be applicable for a cost-effective resource management in UMTS/HSPA/LTE mobile networks and can be easily applied in proper network dimensioning.