Enhanced Distributed Resource Allocation and Interference Management in LTE Femtocell Networks

Sathya, V and Gudivada, H V and Narayanam, H and Krishna, P M and Tamma, Bheemarjuna Reddy (2013) Enhanced Distributed Resource Allocation and Interference Management in LTE Femtocell Networks. In: IEEE 9th International Conference on Wireless and Mobile Computing, Networking and Communications, WiMob, 1-9 October 2013, Lyon; France.

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Femto cells have been integrated into 4G Long Term Evolution (LTE) cellular network architecture to efficiently address the coverage and capacity issues faced in indoors and at hotspots. Though spectral efficiency increases through frequency reuse one at Femtos, it could lead to co-tier interference and cause higher interference for cell edge User Equipments (UEs). This problem is more severe in enterprise and hotspot Femto deployments due to dense placement of Femtos. Existing co-tier interference management techniques do not solve this problem completely. Hence, in this paper, we propose a Variable Radius (VR) algorithm which dynamically increases or decreases the cell edge/non-cell edge region of Femtos and efficiently allocates the radio resources among cell edge/non-cell edge region of Femtos so that the co-tier interference between neighboring Femtos can be avoided. We implemented the proposed VR algorithm on top of Proportional Fair (PF) scheduling algorithm in NS-3 simulator. In our experiments, for 90 UEs the proposed technique (VR + PF) achieved 29% and 38% improvement in average throughput for static and mobile scenarios, respectively when compared to classic PF algorithm without any interference management

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IITH Creators:
IITH CreatorsORCiD
Tamma, Bheemarjuna ReddyUNSPECIFIED
Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Femto Cells; Interference Management; LTE; Spectral efficiency
Subjects: Computer science > Big Data Analytics
Divisions: Department of Computer Science & Engineering
Depositing User: Team Library
Date Deposited: 20 Nov 2014 09:56
Last Modified: 07 Sep 2017 10:01
URI: http://raiith.iith.ac.in/id/eprint/888
Publisher URL: https://doi.org/10.1109/WiMOB.2013.6673412
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