Differentiated Connection Admission Control Strategy for Wireless VoIP Networks with Adaptive Modulation Coding

In this paper, a differentiated connection admission control (CAC) strategy for VoIP traffic-based wireless networks with Adaptive Modulation Coding (AMC) is proposed and mathematically analyzed. The service area is divided into different disjoint coverage zones according to the AMC strategy. The aim of the proposed CAC strategy is to regulate and restrain the admission of most resource demanding VoIP sessions (those with lower bit transmission rate). To this end, the number of sessions in a given coverage zone is weighted by a factor whose value depends on the allowed bit transmission rate of that zone. A joint connection and packet level analysis is developed to evaluate the performance of the proposed differentiated CAC strategy. Maximum achieved Erlang capacity for different bit transmission rates ratios and proportion of users in the different coverage zones is evaluated. Numerical results show that with the proposed differentiated CAC strategy, Erlang capacity increases up to 8% relative to CAC without admission differentiation.

[1]  Dong-Ho Cho,et al.  VoIP capacity analysis in cognitive radio system , 2009, IEEE Communications Letters.

[2]  Mischa Schwartz,et al.  A decomposition approximation for the analysis of voice/data integration , 1994, IEEE Trans. Commun..

[3]  Mario E. Rivero-Angeles,et al.  Joint Connection Level and Packet Level Analysis of Cognitive Radio Networks with VoIP Traffic , 2014, IEEE Journal on Selected Areas in Communications.

[4]  Dong-Ho Cho,et al.  Capacity Improvement and Analysis of VoIP Service in a Cognitive Radio System , 2010, IEEE Transactions on Vehicular Technology.

[5]  Jie Wang,et al.  Robust dynamic admission control for unified cell and call QoS in statistical multiplexers , 1998, IEEE J. Sel. Areas Commun..

[6]  Dusit Niyato,et al.  A Novel Analytical Framework for Integrated Cross-Layer Study of Call-Level and Packet-Level QoS in Wireless Mobile Multimedia Networks , 2007, IEEE Transactions on Mobile Computing.

[7]  Iakovos S. Venieris,et al.  End-to-end QoS specification issues in the converged all-IP wired and wireless environment , 2004, IEEE Communications Magazine.

[8]  Kenichi Mase.  Toward scalable admission control for VoIP networks , 2004, IEEE Communications Magazine.

[9]  David M. Lucantoni,et al.  A Markov Modulated Characterization of Packetized Voice and Data Traffic and Related Statistical Multiplexer Performance , 1986, IEEE J. Sel. Areas Commun..

[10]  Tadeus Uhl.  Quality of Service in VoIP Communication , 2004 .

[11]  Hsiao-Hwa Chen,et al.  A call admission control framework for voice over WLANs , 2006, IEEE Wireless Communications.

[12]  Yonatan Levy,et al.  Admission control for VoIP calls with heterogeneous codecs , 2009, 2009 18th Annual Wireless and Optical Communications Conference.

[13]  Fotini-Niovi Pavlidou,et al.  VoIP: A comprehensive survey on a promising technology , 2009, Comput. Networks.

[14]  Kiril Kassev,et al.  A New Paradigm of CAC Dimensioning for VoIP Traffic over Wireless Access Networks , 2010, 2010 Fourth International Conference on Digital Society.

[15]  D. Lara-Rodriguez,et al.  Fractional channel reservation in mobile communication systems , 1999 .

[16]  Francisco Rodrigo Porto Cavalcanti,et al.  QoS-driven adaptive congestion control for voice over IP in multiservice wireless cellular networks , 2008, IEEE Communications Magazine.