Call admission control scheme for multiclass services under rain fading for satellite network

Authors:
Markos P. Anastasopoulos;Dionysia K. Petraki;Athanasios V. Vasilakos;Panayotis G. Cottis;Hsiao-Hwa Chen
Affiliations:
School of Electrical & Computer Engineering, National Technical University of Athens, Greece;School of Electrical & Computer Engineering, National Technical University of Athens, Greece;School of Electrical & Computer Engineering, University of Western Macedonia, Greece;School of Electrical & Computer Engineering, National Technical University of Athens, Greece;Department of Engineering Science, National Cheng Kung University, Tainan City, Taiwan
Venue:
IEEE Transactions on Wireless Communications
Year:
2009

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Abstract

Resource allocation and call admission control (CAC) are two key issues in satellite networks for multimedia applications with quality of service (QoS) guarantees. This paper introduces a new priority-based CAC scheme for multiclass services in satellite networks operating above 10 GHz, where the dominant factor limiting performance is rain attenuation, a phenomenon exhibiting both spatial and temporal variation. The proposed scheme exploits the predictability of the satellite channel and accepts a new call if sufficient resources exist for existing and new users to guarantee their QoS requirements. At the same time, it assigns higher priority to real-time users compared to non-real time ones. The performance of the proposed scheme is investigated using Markov chain to represent the satellite channel states. Analytical expressions concerning the call blocking probability under clear sky and rain conditions are derived.