About | Contact Us | Register | Login
ProceedingsSeriesJournalsSearchEAI
5th International ICST Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks

Research Article

Dynamic Association for Load Balancing and Interference Avoidance in Multi-cell Networks

Cite
BibTeX Plain Text
  • @INPROCEEDINGS{10.1109/WIOPT.2007.4480044,
        author={Kyuho  Son and Song Chong and Gustavo de Veciana},
        title={Dynamic Association for Load Balancing and Interference Avoidance in Multi-cell Networks},
        proceedings={5th International ICST Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks},
        publisher={IEEE},
        proceedings_a={WIOPT},
        year={2008},
        month={3},
        keywords={Bandwidth  Base stations  Degradation  Downlink  Interference  Load management  Performance gain  Quality of service  Signal to noise ratio  Throughput},
        doi={10.1109/WIOPT.2007.4480044}
    }
    
  • Kyuho Son
    Song Chong
    Gustavo de Veciana
    Year: 2008
    Dynamic Association for Load Balancing and Interference Avoidance in Multi-cell Networks
    WIOPT
    IEEE
    DOI: 10.1109/WIOPT.2007.4480044
Kyuho Son1,*, Song Chong1,*, Gustavo de Veciana2,*
  • 1: Dept. of Electrical Engineering and Computer Science, KAIST
  • 2: Dept. of Electrical and Computer Engineering, University of Texas at Austin
*Contact email: skiognetsys@kaist.ac.kr, song@ee.kaist.ac.kr, gustavo@ece.utexas.edu

Abstract

In promising OFDMA systems, downlink signals originating from the same base station (BS) are orthogonal, while those from different BSs interfere with each other. As a consequence, inter-cell interference (ICI) becomes major performance degradation factor. Particularly, boundary users suffer from severe ICI in addition to the inherent near-far problem. To improve cell edge performances and support a more balanced data rate among all users, partial frequency reuse (PFR) and load-balancing schemes are investigated in this paper. We have formulated a utility maximization problem with network-wide proportional fairness (PF) as an objective in a multi-cell network with PFR. To solve this problem, we propose an offline optimal algorithm and also efficient online algorithms. Our online algorithms are based on simple inter/intra-handover and cell-site selection in which a metric is changed from the signal strength to the average throughput. Through extensive simulations, we demonstrate that our online algorithms can achieve network-wide PF very closely. Compared to the conventional system with a universal frequency reuse where a user is bound to the best signal strength base station, the proposed algorithms bring two types of performance gain: interference avoidance (IA) and load balancing (LB) gain. These gains improve the system performance, especially for users at the cell boundary.

Keywords
Bandwidth Base stations Degradation Downlink Interference Load management Performance gain Quality of service Signal to noise ratio Throughput
Published
2008-03-31
Publisher
IEEE
Modified
2011-07-28
http://dx.doi.org/10.1109/WIOPT.2007.4480044
Copyright © 2007–2025 IEEE
EBSCOProQuestDBLPDOAJPortico
EAI Logo

About EAI

  • Who We Are
  • Leadership
  • Research Areas
  • Partners
  • Media Center

Community

  • Membership
  • Conference
  • Recognition
  • Sponsor Us

Publish with EAI

  • Publishing
  • Journals
  • Proceedings
  • Books
  • EUDL