Optimum Antenna Downtilt Angles for Macrocellular WCDMA Network

Niemelä, Jarno; Isotalo, Tero; Lempiainen, Jukka

doi:10.1155/wcn.2005.816

Cited by 61 publications

(53 citation statements)

References 19 publications

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“…Existing work [14] has shown that dynamically tilting the antenna can improve the throughput of the cell. The optimal down-tilt for the reference deployment was found to be between 6-8…”

Section: B Dynamic Antenna Beam-tiltingmentioning

confidence: 99%

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Dynamic Cell Expansion with Self-Organizing Cooperation

Guo

O’Farrell

2013

IEEE J. Select. Areas Commun.

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Abstract-This paper addresses the challenge of how to reduce the energy consumption of a multi-cell network under a dynamic traffic load. The body of investigation first shows that the energy reduction upper-bound for transmission improving techniques is hardware-limited, and the bound for infrastructure reduction is capacity-limited.The paper proposes a novel cell expansion technique, where the coverage area of cells can expand and contract based on the traffic load. This is accomplished by switching off low load cellsites and compensating for the coverage loss by expanding the neighboring cells through antenna beam tilting. The multi-cell coordination is resolved by using either a centralized controller or a distributed self-organizing-network (SON) algorithm. The analysis demonstrates that the proposed distributed algorithm is able to exploit flexibility and performance uncertainty through reinforced learning and improves on the centralized solution. The combined energy saving benefit of the proposed techniques is up to 50% compared to a reference deployment and 44% compared with alternative state-of-the-art dynamic base-station techniques.

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“…Existing work [14] has shown that dynamically tilting the antenna can improve the throughput of the cell. The optimal down-tilt for the reference deployment was found to be between 6-8…”

Section: B Dynamic Antenna Beam-tiltingmentioning

confidence: 99%

“…For antenna arrays, the vertical pattern is typically very nonuniform, and therefore optimization is performed via bruteforce search within a reasonable range of (2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20) • ). Referring to Fig.…”

Section: B Dynamic Antenna Beam-tiltingmentioning

confidence: 99%

Dynamic Cell Expansion with Self-Organizing Cooperation

Guo

O’Farrell

2013

IEEE J. Select. Areas Commun.

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“…The BS antenna radiation patterns are cosine-like with side lobe level -15 dB and half-power beamwidth 10, 65, and 120 degrees, respectively (Czylwik & Dekorsy, 2004;Niemelä et al, 2005). Figure 8 depicts the probability that an interfering cell causes interference over φ in the network (in a single cluster system, this probability is even function).…”

Section: The Impact Of the Shape Of The Cells On Co-channel Interferementioning

confidence: 99%

Hexagonal vs Circular Cell Shape: A Comparative Analysis and Evaluation of the Two Popular Modeling Approximations

Baltzis¹

2011

Cellular Networks - Positioning, Performance Analysis, Reliability

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“…One of the most commonly used parameter for CCO in different technologies is the antenna tilt [14,15]. Several optimization algorithms based on antenna tilt modifications can be found in the literature.…”

Section: Introductionmentioning

confidence: 99%

Fault compensation algorithm based on handover margins in LTE networks

de-la-Bandera

Barco

Muñoz

et al. 2016

J Wireless Com Network

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In the context of Self-Organizing Networks (SON), this paper presents a novel cell degradation compensation algorithm based on handover margin modifications. The fault considered in this paper is a weak coverage use case so that the faulty cell will be active during the compensation, but its power will be abnormally lower than it should. Unlike the extensively studied cell outage use case, in this case, the modification of the faulty cell's parameters can be considered as part of the compensation algorithm. In particular, this paper proposes to modify the handover margins for cell degradation compensation. To analyze the proposed algorithm, a set of simulations has been carried out using an LTE simulator with a realistic scenario. Results show that the proposed algorithm is able to improve the degradation caused by the fault with a low effect in the neighboring cells under different conditions.

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Optimum Antenna Downtilt Angles for Macrocellular WCDMA Network

Cited by 61 publications

References 19 publications

Dynamic Cell Expansion with Self-Organizing Cooperation

Dynamic Cell Expansion with Self-Organizing Cooperation

Hexagonal vs Circular Cell Shape: A Comparative Analysis and Evaluation of the Two Popular Modeling Approximations

Fault compensation algorithm based on handover margins in LTE networks

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