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Dynamic cell expansion with self-organizing cooperation
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Guo, Weisi and O'Farrell, Timothy (2013) Dynamic cell expansion with self-organizing cooperation. IEEE Journal on Selected Areas in Communication, 31 (5). pp. 851-860. doi:10.1109/JSAC.2013.130504 ISSN 0733-8716.
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Official URL: http://dx.doi.org/10.1109/JSAC.2013.130504
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 cell-sites 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.
Item Type: | Journal Article | ||||
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Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||
Library of Congress Subject Headings (LCSH): | Wireless communication systems, Telecommunication -- Traffic | ||||
Journal or Publication Title: | IEEE Journal on Selected Areas in Communication | ||||
Publisher: | IEEE | ||||
ISSN: | 0733-8716 | ||||
Official Date: | May 2013 | ||||
Dates: |
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Volume: | 31 | ||||
Number: | 5 | ||||
Number of Pages: | 10 | ||||
Page Range: | pp. 851-860 | ||||
DOI: | 10.1109/JSAC.2013.130504 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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