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International Journal of Distributed Sensor Networks
Volume 2012 (2012), Article ID 170589, 8 pages
http://dx.doi.org/10.1155/2012/170589
Research Article

Centralized Management Mechanism for Cell Outage Compensation in LTE Networks

State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China

Received 3 May 2012; Revised 10 July 2012; Accepted 10 July 2012

Academic Editor: Mugen Peng

Copyright © 2012 Li Wenjing et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

To mitigate the performance degradation induced by the cell outage, in this paper, a centralized cell outage compensation management mechanism and the corresponding workflow are proposed. Then a concrete algorithm named autonomic particle swarm compensation algorithm (APSCA) is proposed to generate the compensation scheme. The simulation results show that the proposed APSCA is effective to resolve the coverage problems induced by the outage. In the simulation scenario, almost 98.3% users that would otherwise be dropped will be served by the surrounding cells, and the block probabilities of the compensating cells are still kept on the accepted levels.