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QoS Equalization in a W-CDMA Cell Supporting Calls of Innite or Finite Sources with Interference Cancelation

Moscholios I. D., Kallos G. A., Katsiva M. A., Vassilakis V. G., Logothetis M. D.

Journal of Telecommunications and Information Technology

2014

nr 3

63--70

In this paper, a multirate loss model for the calculation of time and call congestion probabilities in a Wideband Code Division Multiple Access (W-CDMA) cell is considered. It utilizes the Bandwidth Reservation (BR) policy and supports calls generated by an infinite or finite number of users. The BR policy achieves QoS equalization by equalizing congestion probabilities among calls of dierent service-classes. In the proposed models a multiple access interference is considered, and the notion of local blocking, user's activity and interference cancelation. Although the analysis of the proposed models reveals that the steady state probabilities do not have a product form solution, the authors show that the calculation of time and call congestion probabilities can be based on approximate but recursive formulas, whose accuracy is verified through simulation and found to be quite satisfactory.

Fully adaptive CAC schemes for multimedia traffic in wireless mobile networks

Martyna J.

Studia Informatica

2003

Vol. 24, nr 4

149-164

We introduce adaptive Cali Admission Control (CAC) algorithms for micro- and pico-cell wireless multimedia mobile networks. Our approach allows for an arbitrary topology of network. Additionally, we incorporate in our CAC algorithm the required bandwidth, reservation with ąuality of service and classes of services. The new QoS parameters, such as Movement Change Ratio, Reserved Bandwidth in Neighbouring Cells and Possessed Bandwidth in Neighbouring Cells arę derived, allowing for proper tuning of the CAC algorithm. Simulations illustrate the effectiveness of the given algorithms.

W pracy wprowadzono algorytmy do adaptacyjnego sterowania przyjmowania zgłoszeń (CAC) dla bezprzewodowych, multimedialnych sieci radiokomunikacji ruchomej. Dostarczają one wymaganego pasma transmisji, jak również rezerwują je zgodnie, z parametrami jakości usług (QoS), W pracy wprowadzono nowe parametry QoS, takie jak Współczynnik Zmiany Ruchu, Rezerwowane Pasmo Transmisji w Komórkach Sąsiednich, Posiadane Pasmo Transmisji w Komórkach Sąsiednich.