The impact of queuing and call setup delays on UMTS spectrum sharing algorithm

This paper proposes spectrum sharing algorithms between two Universal Mobile Telecommunication System (UMTS) operators in order to improve underutilization of the spectrum. Furthermore, it investigates the call setup delays present in the proposed Fixed Spectrum Allocation (FSA) and Dynamic Spectrum Allocation (DSA) schemes, and the associated messages involved. The spectrum efficiency gains of the proposed algorithms are obtained by simulations. The impact of the queuing and call setup messages on the overall algorithm performance is also discussed. It is shown that due to the proposed techniques, spectrum sharing gain of about three percent (3%) is possible at an operating point of 98% satisfaction ratio, when the impact of the call setup messages is considered.

[1]  A. Elberse.  DECT: the ideal telework access technology , 1994 .

[2]  R. Venkatesha Prasad,et al.  Cognitive functionality in next generation wireless networks: standardization efforts , 2008, IEEE Communications Magazine.

[3]  Antti Toskala,et al.  WCDMA for UMTS: HSPA Evolution and LTE , 2010 .

[4]  Rahim Tafazolli,et al.  Nonpool based spectrum sharing for two UMTS operators in the UMTS extension band , 2008, 2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications.

[5]  Junqiang Guo,et al.  Estimate the Call Duration Distribution Parameters in GSM System Based on K-L Divergence Method , 2007, 2007 International Conference on Wireless Communications, Networking and Mobile Computing.

[6]  Oriol Sallent,et al.  Decentralized spectrum and radio resource management enabled by an on-demand Cognitive Pilot Channel , 2008, Ann. des Télécommunications.

[7]  Shane Greenstein,et al.  Promoting Efficient Use of Spectrum Through Elimination of Barriers to the Development of Secondary Markets , 2001 .

[8]  Paul Robert. Leaves.  Dynamic Spectrum Allocation Between Cellular and Broadcast Systems. , 2004 .

[9]  S. Thilakawardana,et al.  Dynamic Spectrum Sharing Algorithm Between Two UMTS Operators in the UMTS Extension Band , 2009, 2009 IEEE International Conference on Communications Workshops.

[10]  Ian F. Akyildiz,et al.  A survey on spectrum management in cognitive radio networks , 2008, IEEE Communications Magazine.

[11]  Hamid Aghvami,et al.  A Framework for Unified Spectrum Management (USM) in Heterogeneous Wireless Networks , 2007, IEEE Communications Magazine.

[12]  Simon Haykin,et al.  Cognitive radio: brain-empowered wireless communications , 2005, IEEE Journal on Selected Areas in Communications.

[13]  Antti Toskala,et al.  Wcdma for Umts , 2002 .

[14]  Hamid Aghvami,et al.  Challenges of real-time secondary usage of spectrum , 2008, Comput. Networks.