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无线多媒体传感器网络中蜂窝网络下设备到设备通信的分数频率复用方案。

Fractional Frequency Reuse Scheme for Device to Device Communication Underlaying Cellular on Wireless Multimedia Sensor Networks.

机构信息

Department of Computer Science and Engineering, Hanyang University, 55 Hanyangdaehak-ro, Sangnok-gu, Ansan, Gyeonggi-do 426-791, Korea.

出版信息

Sensors (Basel). 2018 Aug 13;18(8):2661. doi: 10.3390/s18082661.

DOI:10.3390/s18082661
PMID:30104533
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6111253/
Abstract

Wireless multimedia sensor networks (WMSNs) have been improved with the increase of multimedia data. In WMSNs, a centralization problem can occur because of large-size multimedia data. It is necessary to consider device-to-device (D2D) communication. We focus on D2D WMSN based on cellular networks. Sensors in the D2D WMSN can non-orthogonally use a cellular link, which is a wireless communication channel between a sensor and an aggregator, and a D2D link, which is the channel between sensors. As a result, it has more complex interference environments than an ordinary system. Therefore, it is a key factor to manage the varying inter-cell interference effectively for throughput improvement. We propose an interference mitigation scheme that can be applied to D2D WMSN. In the proposed scheme, a cell is separated into six zones and orthogonal frequency is allocated to each zone for cellular links. The frequencies allocated to cellular links are reused by D2D links of neighboring zones. The simulation results show that the throughput of the proposed scheme increases two times compared to a static frequency allocation scheme.

摘要

随着多媒体数据的增加，无线多媒体传感器网络（WMSN）得到了改进。在 WMSN 中，由于多媒体数据的规模较大，可能会出现集中化问题。因此，有必要考虑设备到设备（D2D）通信。我们专注于基于蜂窝网络的 D2D WMSN。D2D WMSN 中的传感器可以非正交地使用蜂窝链路，该链路是传感器和聚合器之间的无线通信信道，以及 D2D 链路，该链路是传感器之间的信道。因此，它比普通系统具有更复杂的干扰环境。因此，有效管理变化的小区间干扰是提高吞吐量的关键因素。我们提出了一种可以应用于 D2D WMSN 的干扰缓解方案。在提出的方案中，将小区分为六个区域，并为每个区域的蜂窝链路分配正交频率。分配给蜂窝链路的频率由相邻区域的 D2D 链路重复使用。仿真结果表明，与静态频率分配方案相比，所提出方案的吞吐量增加了两倍。

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