Key Challenges, Drivers and Solutions for Mobility Management in 5G Networks: A Survey

IEEE Access

Yousef Ibrahim Daradkeh¹  Sultan Aldirmaz Colak²  Rosdiadee Nordin³  Mustafa Ergen⁴  Ibraheem Shayea⁴  Marwan Hadri Azmi⁵ 

[1] Department of Computer Engineering and Networks, College of Engineering at Wadi Addawasir, Prince Sattam Bin Abdulaziz University, Wadi Addawasir, Saudi Arabia;Department of Electronics and Communication Engineering, Faculty of Engineering, Kocaeli University, Kocaeli, Turkey;Department of Electronics, Electrical and System Engineering, Universiti Kebangsaan Malaysia, Bangi, Malaysia;Electronics and Communication Engineering Department, Faculty of Electrical and Electronics Engineering, Istanbul Technical University (ITU), Istanbul, Turkey;Wireless Communication Centre, School of Electrical Engineering, Faculty of Engineering, Universiti Teknologi Malaysia (UTM), Johor Bahru, Malaysia;

关键词: Mobility management;    handover;    mobility challenges;    handover problems;    mobility robustness optimization;    handover self-optimization;   

DOI  :  10.1109/ACCESS.2020.3023802

来源: DOAJ

【 摘 要 】

Ensuring a seamless connection during the mobility of various User Equipments (UEs) will be one of the major challenges facing the practical implementation of the Fifth Generation (5G) networks and beyond. Several key determinants will significantly contribute to numerous mobility challenges. One of the most important determinants is the use of millimeter waves (mm-waves) as it is characterized by high path loss. The inclusion of various types of small coverage Base Stations (BSs), such as Picocell, Femtocell and drone-based BSs is another challenge. Other issues include the use of Dual Connectivity (DC), Carrier Aggregation (CA), the massive growth of mobiles connections, network diversity, the emergence of connected drones (as BS or UE), ultra-dense network, inefficient optimization processes, central optimization operations, partial optimization, complex relation in optimization operations, and the use of inefficient handover decision algorithms. The relationship between these processes and diverse wireless technologies can cause growing concerns in relation to handover associated with mobility. The risk becomes critical with high mobility speed scenarios. Therefore, mobility issues and their determinants must be efficiently addressed. This paper aims to provide an overview of mobility management in 5G networks. The work examines key factors that will significantly contribute to the increase of mobility issues. Furthermore, the innovative, advanced, efficient, and smart handover techniques that have been introduced in 5G networks are discussed. The study also highlights the main challenges facing UEs' mobility as well as future research directions on mobility management in 5G networks and beyond.

【 授权许可】

Unknown