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

Title
An Interference Mitigation Scheme of Device-to-Device Communications for Sensor Networks Underlying LTE-A
Author
조성현
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); RESOURCE-ALLOCATION
Issue Date
2017-05
Publisher
MDPI AG
Citation
SENSORS, v. 17, No. 5, Article no. 1088
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.
URI
http://www.mdpi.com/1424-8220/17/5/1088http://repository.hanyang.ac.kr/handle/20.500.11754/72078
ISSN
1424-8220
DOI
10.3390/s17051088
Appears in Collections:
COLLEGE OF COMPUTING[E] > COMPUTER SCIENCE(소프트웨어학부) > Articles
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