Convergence of WSN and cognitive cellular network using maximum frequency reuse
Convergence of WSN and cognitive cellular network using maximum frequency reuse
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DOI：
10.1049/iet-com.2016.0966
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发表时间：
2017-03-20
影响因子：
1.6
通讯作者：
Saxena, Navrati
中科院分区：
文献类型：
--
作者：
Hassan, Farooque;Roy, Abhishek;Saxena, Navrati
无线传感器网络（WSN）应用和设备的数量呈指数级增长，对通信资源的需求日益迫切.无论接入机制如何，未经许可的工业、科学和医疗频带都不足以实现大规模的同时连接。另一方面，4G和新兴的5G蜂窝网络分别提供75- 300 Mbps和7.5Gbps的高数据速率。然而，无线传感器网络的临时包含在蜂窝网络中可以严重拥塞其随机接入信道（RACH）。在这项研究中，作者调查了一个独特的概念，最大的频率复用在小型演进节点B，随后，建议在无线传感器网络拥塞地区的部署。他们还提出了一种认知无线电（CR）算法，以通过宏小区卸载SeNB负载。作者在分析RACH模型中制定提出的基于SeNB的蜂窝网络，其中仔细检查SeNB和宏小区用户的动态。实验结果表明，该方案能够以较低的冲突概率分配更多的用户。仿真结果表明，该方案可使下行链路吞吐量显著提高1- 3 Mbps，上行链路吞吐量提高2- 9 Mbps。平均上行链路信号与干扰加噪声比（SINR）也增加了大约10-15 dB。此外，基于CR的SeNB的智能卸载在下行链路和上行链路SINR方面优于常规卸载大约1-3dB。
The exponential increase in wireless sensor network (WSN) applications and devices crave for the communication resources. Regardless of the access mechanism, the unlicensed industrial, scientific and medical spectrum band is insufficient for massive simultaneous connections. On the other hand, the 4G and the emerging 5G cellular networks provide high data rates of 75-300Mbps and 7.5Gbps, respectively. Nevertheless, WSN's extempore inclusion in the cellular network can heavily congest its Random Access Channel (RACH). In this study, the authors investigate a unique concept of maximum frequency reuse in small evolved NodeBs, and subsequently, recommend their deployment in WSN congested areas. They also propose a cognitive radio (CR) algorithm to offload SeNB load over Macrocell. Authors formulate proposed SeNB-based cellular network in an analytical RACH model, where dynamics of SeNB's and Macrocell users are scrutinised. Observations show that the proposed scheme allocates more users with low collision probability. Simulation results show that the proposed scheme imparts a significant increase of 1-3Mbps in downlink throughput and culminate a lift of 2-9Mbps in uplink throughput. The average uplink signal-to-interference-plus-noise-ratio (SINR) is also proliferated by approximately 10-15 dB. Moreover, CR-based SeNB's smart offloading outperforms the conventional offloading in terms of downlink and uplink SINR by about 1-3dB.