Mobility modeling and analytical solution for spatial traffic distribution in wireless multimedia networks

Authors:
F. Ashtiani;J. A. Salehi;M. R. Aref
Affiliations:
Dept. of Electr. Eng., Sharif Univ. of Technol., Tehran, Iran;-;-
Venue:
IEEE Journal on Selected Areas in Communications
Year:
2006

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Abstract

In this paper, we propose a general mobility model suitable for wireless multimedia networks. Our model is based on splitting a region into subregions. Furthermore, we make an analogy between subregions as well as their inter-connections with a multi-class Jackson queueing network comprising of infinite-server nodes. The main attribute of such a network is due to its product-form stationary distribution. Using this model, we are able to obtain a closed analytical form for the spatial traffic distribution corresponding to a specific number of network-connected users with different classes of service and mobility in a typical region. Also, we show the flexibility obtained by the proposed mobility model in representing some general distributions such as sum-of-hyper-exponentials (SOHYP), hyper-Erlang and Cox which were previously suggested to model mobility-related statistical parameters, e.g., cell dwell time and channel holding time. Finally, we apply the proposed model to a few mobility scenarios and obtain the resultant active user's location density.