Coverage probability driven dynamic spectrum allocation in heterogeneous wireless networks

In this paper, we design a dynamic spectrum allocation (DSA) scheme for heterogeneous cellular wireless networks with special interest on guaranteeing the cell coverage probability. To this end, considering users spatial distribution, we propose a new interference control (IC) model, which guarantees SINR (signal to interference plus noise ratio) requirements of different services and ensures the coverage performance of base stations (BSs). Under such an IC model, we formulate the DSA scheme as a combinatorial optimization problem. Since the problem is computationally intractable, we design an algorithm for its solution based on graph coloring. Simulation results indicate that the proposed DSA scheme can increase the total spectrum utility while effectively controlling the interference among BSs and meeting SINR requirements of users.

[1]  Shilpa Achaliya,et al.  Cognitive radio , 2010 .

[2]  Yunseok Kang,et al.  Dynamic Spectrum Allocation with Efficient SINR-Based Interference Management , 2011, 2011 IEEE Vehicular Technology Conference (VTC Fall).

[3]  R. Tafazolli,et al.  Dynamic spectrum allocation in hybrid networks with imperfect load prediction , 2002 .

[4]  Ralf Tönjes,et al.  Dynamic spectrum allocation in composite reconfigurable wireless networks , 2004, IEEE Communications Magazine.

[5]  M. Buddhikot,et al.  Spectrum management in coordinated dynamic spectrum access based cellular networks , 2005, First IEEE International Symposium on New Frontiers in Dynamic Spectrum Access Networks, 2005. DySPAN 2005..

[6]  T. Aaron Gulliver,et al.  Dynamic Spectrum Management for WCDMA/DVB Heterogeneous Systems , 2011, IEEE Transactions on Wireless Communications.

[7]  A.P. Subramanian,et al.  Near-Optimal Dynamic Spectrum Allocation in Cellular Networks , 2008, 2008 3rd IEEE Symposium on New Frontiers in Dynamic Spectrum Access Networks.

[8]  Kamran Arshad,et al.  Dynamic spectrum allocation algorithm with interference management in displaced networks , 2011, 2011 7th International Wireless Communications and Mobile Computing Conference.

[9]  Kamran Arshad,et al.  Dynamic Spectrum Allocation Algorithm with Interference Management in Co-Existing Networks , 2011, IEEE Communications Letters.