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학술지 Performance Analysis of Dynamic Spectrum Allocation in Heterogeneous Wireless Networks
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하정락, 김진업, 김상하
ETRI Journal, v.32 no.2, pp.292-301
한국전자통신연구원 (ETRI)
Increasing convergence among heterogeneous radio networks is expected to be a key feature of future ubiquitous services. The convergence of radio networks in combination with dynamic spectrum allocation (DSA) could be a beneficial means to solve the growing demand for radio spectrum. DSA might enhance the spectrum utilization of involved radio networks to comply with user requirements for high-quality multimedia services. This paper proposes a simple spectrum allocation algorithm and presents an analytical model of dynamic spectrum resource allocation between two networks using a 4-D Markov chain. We argue that there may exist a breakeven point for choosing whether or not to adopt DSA in a system. We point out certain circumstances where DSA is not a viable alternative. We also discuss the performance of DSA against the degree of resource sharing using the proposed analytical model and simulations. The presented analytical model is not restricted to DSA, and can be applied to a general resource sharing study. Copyright © 2010 ETRI.
KSP 제안 키워드
4-D, Analytical model, Breakeven point, Heterogeneous wireless networks, High-quality, Multimedia Service, Performance analysis, Radio Spectrum, Radio networks, Sharing studies, Spectrum Resource Allocation