A Relative Survey on Vertical Handover Mechanisms in Internet of Vehicles

Internet of Vehicles (IoV) is a new term coined recently and it is a integration of popular technology Internet of Things (IoV) and Intelligence Transportation Systems (ITS). The main aim of IoV is to provide V2X (here X: the vehicles to communicate with other vehicles, Rode Side Units (RSU), pedestrians, humans and Infrastructure). As many radio access networks are involving and leading to heterogeneous networks the 5G can ensures the better seamless connectivity in V2X communication. In the scenario of heterogeneous networks vehicles mobility demands for frequent handover. The most important technologies required for V2X communication are cellular networks and Dedicated Short-Range Communication (DSRC). These two has their own merits and demerits. DSRC covers limited area with low latency whereas 5G offers higher data rates and with low latency by covering wider cell area. Hence, it is not possible to fulfil the requirements of V2X communication with only one of above technologies. To ensure effective V2X communication inter working of cellular network technologies and DSRC is required. Earlier research was focused on selection of network directly for handover. Due to this, the frequent handover was took place, handover failure occurred and Quality of Service (QoS) not ensured. Hence, in this paper a review is carried out to compare existing works and presented.