# A Fuzzy Based Handover Decision Scheme for Mobile Devices Using Predictive Model
## 1 Introduction  
4G is the extreme network provided rate of data (100 Mb/s), expands multimedia services and gives about 2.8 GHz frequency. 4G is a collection of technologies and protocols which generate packet-switched networks which are optimized for data [1]. The fourth generation (4G) wireless networks possess specific characteristics like higher usability anywhere, anytime and with any kind of technology and they also assist services intelligently at making the transmission cost low [2]. It has a wide area of applications in extensive wireless multimedia services, full-motion video applications and wireless teleconferencing [3]. The numerous measures of voice traffic in 3G harden the undertaking of roaming and interoperating while 4G gives worldwide portability and service portability by its advanced packet network. The inabilities and downsides of 3G propel the deploying of 4G [3]. The network architecture has a core component of system integration [2]. The existing wireless technologies are coherently integrated in 4G and this provides fast and extensive access and service for the cellular user. By combining mobility and networking, it can develop a new class of amazing applications [4]. 5G enables a variety of connections such as the Internet of Things (IoT), Machine to Machine (M2M), Device to Device (D2D), Vehicle to Everything (V2X) and Bluetooth. Collectively, they influence corporate governance and interaction with customers in the physical world [5, 6]. Connections have grown dramatically over time as the benefits of connecting devices have been recognized in Internet access by customers, businesses and governments. Over the next decade, these aforementioned services will become a keyelement of the larger market of devices in the world [7]. The 5G networks connected simultaneously by the hundreds of thousands that are considered essential for the massive deployment of these services. These different types of connected services require more system capacity and higher data rates, but some of them require lower latency. All this led to the development of 5G systems. Recently, several studies have been carried out in terms of mobility prediction, autonomous vertical handoff, security, software-defined network (SDN), software-defined network virtualization (SDNV), network function virtualization (NFV) and battery consumption patterns. mobility management issues [8; 9]. In addition, a survey based on actual measurement data conducted shows how the LTE-A (Long-Term Evolution-Advanced) network works during user mobility compared to the first phase of the LTE version. This study analyzed turnaround times, coverage and transfer times [10]. However, each survey provided a different perspective. Therefore, an investigation is needed to uncover the challenges, problems, mobility solutions and determinants of the future direction of the network in mobility. Handover considers the end user's mobility in a mobile network and assures the continuity of the wireless services if the mobile user varies its position across the cellular boundaries. The moving of a mobile's association starting with one base station then onto the next is called handover. Handover provides the following:  
* Continuity of call
* Optimum radio link selection
* Traffic distribution  
The main aim of 3 GPP-WLAN internetworking is coherent mobility that can reduce data loss and latency (i.e., the time spent in handover) during the handover. 3G access procedures consist of two procedures: namely, a context activation packet data protocol procedure with allocation of IP address and a service request process along with authentication of the subscriber. Handover latency is increased when the procedure takes a long time to complete. This may cause service failure.