Dual Connectivity in Decoupled Aerial HetNets With Reverse Frequency Allocation and Clustered Jamming
Dual Connectivity in Decoupled Aerial HetNets With Reverse Frequency Allocation and Clustered Jamming
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DOI：
10.1109/access.2020.3042880
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发表时间：
2020-12
期刊：
影响因子：
3.9
通讯作者：
M. Arif;Shurjeel Wyne;K. Navaie;M. Haroon;Sadia Qureshi
中科院分区：
文献类型：
--
作者：
M. Arif;Shurjeel Wyne;K. Navaie;M. Haroon;Sadia Qureshi
移动设备数量的广泛增加及其对数据速率的要求将导致网络资源的稀缺。为了满足第五代及以后蜂窝网络的容量和覆盖需求，利用异构网络（HetNets）中的双连接（DC）特性是一种很有前途的解决方案。本文考虑了一种具有解耦接入和反向频率分配策略的两层空中HetNet，并研究了网络边缘用户的直流特性。推导了直流第一和第二上行链路（UL）连接覆盖概率的解析表达式。我们提出的设置提高了具有解耦访问的DC的覆盖性能，相对于具有和不具有解耦访问的单连接（SC）。结果表明，当信号干扰比（SIR）阈值为- 20 dB时，相对于有去耦接入和没有去耦接入的SC，基于dc的覆盖性能分别提高了10.6%和82.6%。此外，空中HetNets中基于dc的覆盖对干扰具有弹性。结果还表明，如果目标用户设备周围存在宽带干扰器（wbj），则合法的UL传输将受到干扰干扰的严重破坏。例如，当SIR阈值设置为- 20 dB时，当wbj设置为2和4时，解耦访问的DC覆盖性能下降的百分比分别为4.9%和10.6%。随着wbj发射功率和数量的增加，覆盖性能进一步降低，而随着wbj簇半径的增加，覆盖性能有所提高。
The extensive increase in the number of mobile devices and their data-rate requirements will lead to the scarcity of network resources. One of the promising solutions to keep up with the capacity and coverage demands of the 5th generation and beyond of cellular networks is to exploit the dual connectivity (DC) feature in heterogeneous networks (HetNets). In this work, a two-tier aerial HetNet with decoupled access and reverse frequency allocation strategy is considered and the DC feature for the network edge users is investigated. The analytical expressions of the coverage probability for the first and second uplink (UL) connections in DC are derived. Our proposed setup improves the coverage performance of the DC with decoupled access in relation to single connectivity (SC) with and without decoupled access. The results show a relative increase in the DC-based coverage performance of 10.6% and 82.6%, for a signal-to-interference-ratio (SIR) threshold of −20 dB, with respect to SC with and without decoupled access, respectively. Moreover, DC-based coverage in aerial HetNets is resilient to jamming interference. The results also show that if the wide-band jammers (WBJs) are present around a target-user equipment, the legitimate UL transmission is severely disrupted by the jamming interference. For instance, the percentage-decrease in the coverage performance of DC with decoupled access for the SIR threshold set to −20 dB is 4.9% and 10.6%, when the WBJs is set to 2 and 4, respectively. The coverage performance further decreases with an increase in the transmit powers of the WBJs and their number, whereas increases with an increase in the radius of the WBJs cluster.