NDLI: Load-based cell association for load balancing in heterogeneous cellular networks

Content Provider	IEEE Xplore Digital Library
Author	Guan-Ting Chou Liu, K.-H.S. Szu-Lin Su
Copyright Year	2015
Description	Author affiliation: Inst. of Comput. & Commun. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan (Guan-Ting Chou; Liu, K.-H.S.; Szu-Lin Su)
Abstract	To meet the explosive demands of wireless access, existing cellular networks are under a revolutionary change from macro-only homogeneous networks to heterogeneous cellular networks (HCNs) with small cells added into current infrastructure. Since small-cell base stations (SBSs) transmit with a much small power than the macro base stations (MBSs), the cell association scheme based on received signal strength will underuse SBSs and thus the notion of cell range expansion (CRE) has been proposed as a de facto technique for future HCNs. In CRE, a constant range expansion bias (REB) is added to the received signal strength of SBSs to increase the footprint of small cells and in turn offload the MBS onto the SBSs overlaid in the same geographical area. Without taking the cell load into consideration, cell offloading may not be effectively performed because an overloaded MBS needs to offload users more urgently than an underloaded MBS. In this work, we propose a load-based cell association scheme, where a bias adjustment function is introduced to determine the timing and the magnitude of offloading based on the load of individual MBS. Using 3GPP long term evolution advanced (LTE-A) compliant parameters, extensive simulation results are presented to show that the proposed load-based cell association scheme outperforms the existing one in terms of both average user rates and association successful probability.
Starting Page	1681
Ending Page	1686
File Size	179156
Page Count	6
File Format	PDF
e-ISBN	9781467367820
DOI	10.1109/PIMRC.2015.7343569
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-08-30
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Load management Base stations Interference Mobile communication Wireless networks Signal to noise ratio
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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