A Practical Tessellation-Based Approach for Optimizing Cell-SpecificBias Values in LTE-A Heterogeneous Cellular Networks

Collection with item attached
2017
Item details URL
http://open-repository.kisti.re.kr/cube/handle/open_repository/473912.do
DOI
10.1155/2017/4764103
Title
A Practical Tessellation-Based Approach for Optimizing Cell-SpecificBias Values in LTE-A Heterogeneous Cellular Networks
Description
This research was supported by Basic Science Research Program throughthe National Research Foundation of Korea (NRF) funded by the Ministryof Education, Science and Technology (NRF-2014R1A2A2A01007254 andNRF-2015K2A3A1000189) in part and Institute for Information &Communications Technology Promotion (IITP) grant funded by the KoreaGovernment (MSIP) (2014-0-00552, Next Generation WLAN System with HighEfficient Performance) in part.
abstract
In order to implement an optimized solution for cell range expansion (CRE) and enhanced intercell interference coordination (eICIC) schemes in long-term evolution-advanced (LTE-A) heterogeneous cellular networks (HCNs) and to realize good load-balancing performance in existing LTE-A systems, a practical tessellation-based algorithm is proposed. In this algorithm, a globalized cell-specific bias optimization and a localized almost blank subframe (ABS) ratio update are proposed. The proposed scheme does not require major changes to existing protocols. Thus, it can be implemented in existing LTE-A systems with any legacy user equipment (UE) with only a partial update to the BSs and core networks. From simulation results, it is shown that the tessellation formed by the proposed approach is quite consistent with the optimal one for various realistic scenarios. Thus, the proposed scheme can provide a much better load-balancing capability compared with the conventional common bias scheme. Owing to the improved load-balancing capability, the user rate distribution of the proposed scheme is much better than that obtained from the conventional scheme and is even indistinguishable from that of the ideal joint user association scheme.
provenance
Made available in Cube on 2018-09-28T10:32:12Z (GMT). No. of bitstreams: 0
language
English
author
Park, Jin-Bae
Kim, Kwang Soon
accessioned
2018-09-28T10:32:12Z
available
2018-09-28T10:32:12Z
issued
2017
citation
MATHEMATICAL PROBLEMS IN ENGINEERING
issn
1024-123X
uri
http://open-repository.kisti.re.kr/cube/handle/open_repository/473912.do
Funder
교육부
Funding Program
BK21플러스사업(0.5)
Project ID
1345274009
Jurisdiction
Rep.of Korea
Project Name
Institute of BioMed-IT, Energy-IT and Smart-IT Technology (BEST)
rights
openAccess
type
article


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