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Energy savings using an adaptive base station-to-relay station switching paradigm

Alam, Atm Shafiul; Dooley, Laurence S.; Poulton, Adrian S. and Ji, Yusheng (2012). Energy savings using an adaptive base station-to-relay station switching paradigm. In: International Conference on Wireless Communications and Signal Processing (WCSP'12), 25-27 October 2012, Huangshan, China.

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Abstract

Applying a Base Station (BS) sleep approach during low traffic periods has recently been advocated as a strategy for reducing energy consumption in cellular networks. The complete switching off of certain BS however, can lead to coverage holes and severe performance degradation in terms of off-cell user throughput, greater transmit power dissipation in both the up and downlinks, and more complex interference management. This paper presents a novel cellular network energy saving model in which certain BS rather being turned off are switched to Relay Station (RS) mode during low traffic periods. The switched RS and other shared RS deployed at the cross border of each cell are responsible for upholding the same quality of service (QoS) provision as when all BS are active. A centralised adaptive switching threshold algorithm is also introduced to undertake the switching decision, instead of using a fixed threshold. Simulation results confirm the new BS-RS Switching model using an adaptive threshold can reduce network energy consumption by more than half, as well as improving off-cell users’ throughput.

Item Type: Conference Item
Copyright Holders: 2012 IEEE
Extra Information: Article No: WCS 1569652243, pp. 1-6
Academic Unit/Department: Mathematics, Computing and Technology > Computing & Communications
Interdisciplinary Research Centre: Centre for Research in Computing (CRC)
Item ID: 34294
Depositing User: Laurence Dooley
Date Deposited: 24 Sep 2012 09:11
Last Modified: 11 Dec 2012 02:02
URI: http://oro.open.ac.uk/id/eprint/34294
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