An integrated model of packetized VBR teletraffic source for cellular NG All-IP wireless networks

Authors:
Dmitri Moltchanov;Yevgeni Koucheryavy;Jarmo Harju
Affiliations:
Networks and Protocols Group, Institute of Communications Engineering, Tampere University of Technology, P.O. Box 553, FIN-33101 Tampere, Finland;Networks and Protocols Group, Institute of Communications Engineering, Tampere University of Technology, P.O. Box 553, FIN-33101 Tampere, Finland;Networks and Protocols Group, Institute of Communications Engineering, Tampere University of Technology, P.O. Box 553, FIN-33101 Tampere, Finland
Venue:
Computer Communications
Year:
2006

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Abstract

We propose the integrated model of a single packetized variable bit rate (VBR) teletraffic source for cellular next generation (NG) All-IP networks. The proposed model integrates two parts: the mobility model and the teletraffic model. The mobility model captures mobility behavior of a single user and modeled by a Markov chain with finite state space. The teletraffic model captures teletraffic characteristics of call and packet levels and is represented by the superposition of a Markov chain and a discrete-time batch Markovian arrival process (D-BMAP). Mobility and teletraffic models are integrated, such that the whole model is a triply stochastic process for which the D-BMAP framework remains valid. Numerical examples of the proposed model indicates that even in presence of probabilistic dependence between user mobility and its teletraffic demands it is still feasible to estimate the actual value of call and packet level teletraffic demands offered by a single user to cellular NG All-IP networks. Performance evaluation studies show that the proposed model can be used to predict call and packet level performance degradation experienced by applications in cellular NG All-IP networks under different mobility behavior of nomadic users.