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Energy-Efficient Repulsive Cell Activation for Heterogeneous Cellular Networks.

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Title: Energy-Efficient Repulsive Cell Activation for Heterogeneous Cellular Networks.
Authors: Cho, Sung-rae1, Choi, Wan2
Source: IEEE Journal on Selected Areas in Communications. May2013, Vol. 31 Issue 5, p870-882. 13p.
Subjects: Energy consumption, Computer networks, Stochastic geometry, Search algorithms, Numerical analysis, Probability theory
Abstract: In this paper, we consider a two-tier heterogeneous cellular network (HCN) where macrocells and distributed low power cells, namely daughtercells, are operated in a common spectrum. Due to the ad-hoc nature of daughtercell BS deployments such as pico and femto cells, the mutual interference varies and obviously the coverage probability behaves differently in terms of transmit powers and densities of macrocells and daughtercells. In this paper, we employ repulsive cell activation in the interfering daughtercell network and see the impact of a minimum separation distance between the daughtercell BSs in terms of coverage under open access and power efficiency. The control of the minimum separation distance plays a role in balancing cell load effectively according to changing user density and is justified for the coexistence of low power daughtercells. The optimal minimum separation distance in terms of user density and target per-tier user throughput requirements is found by a numerical search based on a simple bisection method. Numerical results show the benefit of cell repulsion in terms of increased user density support and less area power consumption. [ABSTRACT FROM PUBLISHER]
Copyright of IEEE Journal on Selected Areas in Communications is the property of IEEE and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Energy-Efficient Repulsive Cell Activation for Heterogeneous Cellular Networks.
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  Data: <searchLink fieldCode="DE" term="%22Energy+consumption%22">Energy consumption</searchLink><br /><searchLink fieldCode="DE" term="%22Computer+networks%22">Computer networks</searchLink><br /><searchLink fieldCode="DE" term="%22Stochastic+geometry%22">Stochastic geometry</searchLink><br /><searchLink fieldCode="DE" term="%22Search+algorithms%22">Search algorithms</searchLink><br /><searchLink fieldCode="DE" term="%22Numerical+analysis%22">Numerical analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Probability+theory%22">Probability theory</searchLink>
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  Data: In this paper, we consider a two-tier heterogeneous cellular network (HCN) where macrocells and distributed low power cells, namely daughtercells, are operated in a common spectrum. Due to the ad-hoc nature of daughtercell BS deployments such as pico and femto cells, the mutual interference varies and obviously the coverage probability behaves differently in terms of transmit powers and densities of macrocells and daughtercells. In this paper, we employ repulsive cell activation in the interfering daughtercell network and see the impact of a minimum separation distance between the daughtercell BSs in terms of coverage under open access and power efficiency. The control of the minimum separation distance plays a role in balancing cell load effectively according to changing user density and is justified for the coexistence of low power daughtercells. The optimal minimum separation distance in terms of user density and target per-tier user throughput requirements is found by a numerical search based on a simple bisection method. Numerical results show the benefit of cell repulsion in terms of increased user density support and less area power consumption. [ABSTRACT FROM PUBLISHER]
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  Data: <i>Copyright of IEEE Journal on Selected Areas in Communications is the property of IEEE and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1109/JSAC.2013.130506
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        Text: English
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        PageCount: 13
        StartPage: 870
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      – SubjectFull: Energy consumption
        Type: general
      – SubjectFull: Computer networks
        Type: general
      – SubjectFull: Stochastic geometry
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      – SubjectFull: Search algorithms
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      – SubjectFull: Numerical analysis
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      – SubjectFull: Probability theory
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      – TitleFull: Energy-Efficient Repulsive Cell Activation for Heterogeneous Cellular Networks.
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              Text: May2013
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