Optimal Spectrum Allocation in the Dynamic Heterogeneous Cellular Network

Xiong ZHOU
Suili FENG
Yuehua DING

IEICE TRANSACTIONS on Communications   Vol.E99-B    No.1    pp.240-248
Publication Date: 2016/01/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.2015EBP3049
Type of Manuscript: PAPER
Category: Wireless Communication Technologies
heterogeneous cellular network,  optimal spectrum allocation,  evolutionary game,  dynamic programming,  

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In the dynamic heterogeneous cellular network, spectrum allocation deeply impacts the quality of service and performance of network. In this paper, spectrum allocation is formulated as a dynamic programming problem. A two-level framework is proposed by jointly considering users' dynamic service selection and provider's spectrum allocation. In the first level, the users' service selection is modeled as an evolutionary game, and an evolutionary equilibrium is obtained. In the second level, the service provider allocates the spectral resources to macrocells and femtocells according to the users' strategies, so as to maximize its profits. By jointly considering the service selection and spectrum allocation, the equilibriums of the dynamic network are found. The stability of the equilibriums is analyzed and proven. The proposed two-level framework is validated by the numerical simulation.