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Coverage Radius-based Power Control of Femtocells in Ultra-Dense Networks(UDN)

科赛姆(KESSEM Bawimatom P'Ham)  
【摘要】:Rapid increase in mobile data has raised the stakes on developing innovative new technologies and cellular topologies that can meet these demands in an energy efficient manner.One of the most interesting trends that will emerge from this cellular evolution is Ultra-dense network where small cells such as femtocells will be highly densely deployed.Femtocells are small,inexpensive,low power base stations that are generally consumer deployed,and are expected to significantly improve the coverage and capacity of the indoor users or in some hotspot areas.Femtocells access point(FAPs)have extensive auto configuration and perform self-optimization function that continually adjusts the transmit power so the femtocell coverage does not leak into an outdoor area while sufficiently covering the indoor femtocell area.In this paper a coverage radius-based downlink power control scheme to mitigate interference in densely deployed FAPs is presented.Based on varying coverage radii,a max/min function is used to adjust the downlink transmit power value of a FAP.System-level simulations are performed and results demonstrate that the proposed algorithm achieves significant performance and satisfaction gains.


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