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Sensors 2017, 17(5), 1088; doi:10.3390/s17051088

An Interference Mitigation Scheme of Device-to-Device Communications for Sensor Networks Underlying LTE-A

Department of Computer Science and Engineering, Hanyang University, 55 Hanyangdaehak-ro, Sangnok-gu, Ansan, Gyeonggi-do 426-791, Korea
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Author to whom correspondence should be addressed.
Academic Editor: Leonhard M. Reindl
Received: 3 March 2017 / Revised: 22 April 2017 / Accepted: 6 May 2017 / Published: 10 May 2017
(This article belongs to the Section Sensor Networks)
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Abstract

Device-to-Device (D2D) communication technology has become a key factor in wireless sensor networks to form autonomous communication links among sensor nodes. Many research results for D2D have been presented to resolve different technical issues of D2D. Nevertheless, the previous works have not resolved the shortage of data rate and limited coverage of wireless sensor networks. Due to bandwidth shortages and limited communication coverage, 3rd Generation Partnership Project (3GPP) has introduced a new Device-to-Device (D2D) communication technique underlying cellular networks, which can improve spectral efficiencies by enabling the direct communication of devices in proximity without passing through enhanced-NodeB (eNB). However, to enable D2D communication in a cellular network presents a challenge with regard to radio resource management since D2D links reuse the uplink radio resources of cellular users and it can cause interference to the receiving channels of D2D user equipment (DUE). In this paper, a hybrid mechanism is proposed that uses Fractional Frequency Reuse (FFR) and Almost Blank Sub-frame (ABS) schemes to handle inter-cell interference caused by cellular user equipments (CUEs) to D2D receivers (DUE-Rxs), reusing the same resources at the cell edge area. In our case, DUE-Rxs are considered as victim nodes and CUEs as aggressor nodes, since our primary target is to minimize inter-cell interference in order to increase the signal to interference and noise ratio (SINR) of the target DUE-Rx at the cell edge area. The numerical results show that the interference level of the target D2D receiver (DUE-Rx) decreases significantly compared to the conventional FFR at the cell edge. In addition, the system throughput of the proposed scheme can be increased up to 60% compared to the conventional FFR. View Full-Text
Keywords: wireless sensor network (WSN); device-to-device (D2D); fractional frequency reuse (FFR); almost blank sub-frame (ABS); long-term evolution (LTE); signal to interference plus noise ratio (SINR) wireless sensor network (WSN); device-to-device (D2D); fractional frequency reuse (FFR); almost blank sub-frame (ABS); long-term evolution (LTE); signal to interference plus noise ratio (SINR)
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Kim, J.; Karim, N.A.; Cho, S. An Interference Mitigation Scheme of Device-to-Device Communications for Sensor Networks Underlying LTE-A. Sensors 2017, 17, 1088.

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