Robust Handover Optimization Technique with Fuzzy Logic Controller for Beyond 5G Mobile Networks.
Robust Handover Optimization Technique with Fuzzy Logic Controller for Beyond 5G Mobile Networks.
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DOI：
10.3390/s22166199
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发表时间：
2022-08-18
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移动性管理是移动的网络中确保移动的用户设备（UE）在其移动期间的高服务质量（QoS）的必要过程。在第五代（5G）和更高代（B5 G）移动的网络中，移动性管理由于若干关键因素而变得更加关键，诸如毫米波（mmWave）和太赫兹的使用、更高数量的部署的小小区、连接的设备的大规模增长、对更高数据速率的要求以及对具有高可靠性的超低延迟的必要性。因此，提供通过UE的移动性实现无缝连接的鲁棒移动性技术已经变得至关重要且具有挑战性。移动性鲁棒性优化（mobility robustness optimization，MRO）是一种重要的切换（handover，HO）技术，其主要目的是调整HO控制参数（HCP）（触发时间（time-to-trigger，TTT）和切换余量（handover margin，HOM））。尽管此功能已在4G中引入并在5G中进一步开发，但由于前面所述的几个关键挑战，它必须在未来的移动的网络中更有效。本文提出了一种鲁棒切换优化技术与模糊逻辑控制器（RHOT FLC）。所提出的技术旨在通过利用关于参考信号接收功率（RSRP）、参考信号接收质量（RSRQ）和UE速度的信息作为所提出的技术的输入参数来自动配置HCP。该技术通过B5 G网络中的各种移动场景进行了验证。另外，使用多个主要HO性能度量（诸如HO概率（HOP）、HO失败（霍夫）、HO乒乓（HOPP）、HO等待时间（HOL）和HO中断时间（HIT））来对其进行评估。所得到的结果也进行了比较与其他竞争力的算法从文献中。结果表明，RHOT-FLC取得了相当好的性能比其他技术。此外，与竞争算法相比，RHOT-FLC技术获得了高达95%的HOP减少，95.8%的霍夫，97%的HOPP，94.7%的HOL和95%的HIT。总体而言，RHOT-FLC使用所考虑的HO性能指标获得了高达95.5%的大幅改善。
Mobility management is an essential process in mobile networks to ensure a high quality of service (QoS) for mobile user equipment (UE) during their movements. In fifth generation (5G) and beyond (B5G) mobile networks, mobility management becomes more critical due to several key factors, such as the use of Millimeter Wave (mmWave) and Terahertz, a higher number of deployed small cells, massive growth of connected devices, the requirements of a higher data rate, and the necessities for ultra-low latency with high reliability. Therefore, providing robust mobility techniques that enable seamless connections through the UE’s mobility has become critical and challenging. One of the crucial handover (HO) techniques is known as mobility robustness optimization (MRO), which mainly aims to adjust HO control parameters (HCPs) (time-to-trigger (TTT) and handover margin (HOM)). Although this function has been introduced in 4G and developed further in 5G, it must be more efficient with future mobile networks due to several key challenges, as previously illustrated. This paper proposes a Robust Handover Optimization Technique with a Fuzzy Logic Controller (RHOT-FLC). The proposed technique aims to automatically configure HCPs by exploiting the information on Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), and UE velocity as input parameters for the proposed technique. The technique is validated through various mobility scenarios in B5G networks. Additionally, it is evaluated using a number of major HO performance metrics, such as HO probability (HOP), HO failure (HOF), HO ping-pong (HOPP), HO latency (HOL), and HO interruption time (HIT). The obtained results have also been compared with other competitive algorithms from the literature. The results show that RHOT-FLC has achieved considerably better performance than other techniques. Furthermore, the RHOT-FLC technique obtains up to 95% HOP reduction, 95.8% in HOF, 97% in HOPP, 94.7% in HOL, and 95% in HIT compared to the competitive algorithms. Overall, RHOT-FLC obtained a substantial improvement of up to 95.5% using the considered HO performance metrics.
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DOI：
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发表时间：
2022-01-20
期刊：
Sensors (Basel, Switzerland)
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