Cost-Efficient Optimization of Base Station Densities for Multitier Heterogeneous Cellular Networks
Publication in refereed journal


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摘要Heterogeneous cellular networks have emerged as the primary solution for overwhelming traffic demands. This study addresses the architecture optimization of multitier open-access downlink heterogeneous cellular networks. A distinguishing feature of this work is that the transmission requirements of mobile users and the profit requirements of operators are all considered. Spatial throughput is maximized under practical constrains on the network deployment cost and traffic loads of individual tiers. By using stochastic geometry, the problems of optimizing the densities of base stations (BSs) in different tiers are shown to be linear-fractional programming that can be further transformed into linear programming by employing Charnes-Cooper transformation. The linear-fractional programming can then be solved efficiently. For a two-tier network, the optimal BS densities are derived in closed form by using the graphical method. Our results indicate that enlarging the densities of BSs may not always improve network throughput and that the optimal densities of each tier exist to satisfy the communication demands of mobile users and the profit requirements of operators. Numerical results demonstrate the significant throughput gain from the optimal deployment of multitier heterogeneous cellular networks.
著者Cai R, Zhang W, Ching PC
期刊名稱IEEE Transactions on Wireless Communications
出版年份2016
月份3
日期1
卷號15
期次3
出版社IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
頁次2381 - 2393
國際標準期刊號1536-1276
電子國際標準期刊號1558-2248
語言英式英語
關鍵詞Heterogeneous cellular networks; network architecture optimization; network economics; stochastic geometry
Web of Science 學科類別Engineering; Engineering, Electrical & Electronic; Telecommunications

上次更新時間 2020-14-10 於 00:22