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首页> 美国卫生研究院文献>Sensors (Basel Switzerland) >Fractional Frequency Reuse Scheme for Device to Device Communication Underlaying Cellular on Wireless Multimedia Sensor Networks
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Fractional Frequency Reuse Scheme for Device to Device Communication Underlaying Cellular on Wireless Multimedia Sensor Networks

机译：无线多媒体传感器网络上支持蜂窝的设备到设备通信的小数重用方案

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摘要

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.
机译：随着多媒体数据的增加，无线多媒体传感器网络（WMSN）得到了改善。在WMSN中，由于大尺寸的多媒体数据，可能会出现集中化问题。有必要考虑设备到设备（D2D）的通信。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接（即传感器和聚合器之间的无线通信通道）和D2D链接（即传感器之间的通道）。结果，它具有比普通系统更复杂的干扰环境。因此，有效地管理变化的小区间干扰以提高吞吐量是关键因素。我们提出了一种可应用于D2D WMSN的干扰缓解方案。在所提出的方案中，小区被分成六个区域，并且正交频率被分配给用于蜂窝链路的每个区域。分配给蜂窝链路的频率被相邻区域的D2D链路重用。仿真结果表明，与静态频率分配方案相比，该方案的吞吐量提高了两倍。

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