NDLI: A multi-tier cooperative resource partitioning technique for interference mitigation in heterogeneous cellular networks

Content Provider	IEEE Xplore Digital Library
Author	Singh, R. Mishra, S. Murthy, C.S.R.
Copyright Year	2014
Description	Author affiliation: Indian Inst. of Technol. Madras, Chenai, India (Singh, R.; Mishra, S.; Murthy, C.S.R.)
Abstract	In Heterogeneous cellular networks (HetNets), co-channel interference is a major concern due to the co-existence of multiple base stations with overlaid regions. Edge users are typically the victims because of high interference exposure. To counter this high interference, picocells communicate with the edge users in protected subframes (PSF). The severity of the problem intensifies in case of hotspot deployment, where picocells cannot provide coverage to the entire hotspot, thus forming a dense ring of macrocell users around picocells. We argue that these macrocell users are also victims, constituting a significant victim user population in hotspot deployment. We propose that, along with the macrocell muting during PSF, picocells should also be operated in cooperative manner with macrocell, and be barred from transmission during some of the subframes for protection of these macrocell victim users. We define a utility function to find the optimal values of PSF density for both macrocell and picocells, which would increase victim user throughput thereby enhancing system fairness. Exhaustive simulations illustrate that the proposed scheme improves victim user throughput significantly, while maintaining the overall system capacity.
Sponsorship	IEEE Inf. Theory Soc.
Starting Page	181
Ending Page	187
File Size	415568
Page Count	7
File Format	PDF
ISBN	9783901882630
DOI	10.1109/WIOPT.2014.6850297
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-05-12
Publisher Place	Tunisia
Access Restriction	Subscribed
Rights Holder	IFIP
Subject Keyword	Macrocell networks Interference eICIC Throughput HetNets Protected Subframe Fairness Bit rate Bandwidth CRE Convex Optimization Resource management Signal to noise ratio
Content Type	Text
Resource Type	Article

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