Handover Algorithms in LTE Networks for Massive Means of Transport

Abstract

Handover in LTE occurs when a device moves from the cell coverage serving it towards another; a process where the user established session must not be interrupted due to this cell change. Handovers in LTE are classified as hard ones, since the link with the serving cell is interrupted before establishing the new link with the target cell. This entails a larger failure risk and, consequently, a potential deterioration in the quality of service. This article presents a review of the handover algorithms in LTE, focusing on the ones oriented to massive means of transport. We show how the new algorithms offer a larger success in handovers, increasing the networkdata rate. This indicates that factors such as speed, position, and direction should be included in the algorithms to improve the handover in means of transport. We also present the algorithms focused on mobile relays such as an important study field for future research works.

SCRAS Server-Based Crosslayer Rate-Adaptive Video Streaming over 4G-LTE for UAV-Based Surveillance Applications

“…Therefore, in this case, server-side, dynamic, link-aware adaptation occurs. We also took the handover into consideration, as we know that there is no soft handover in LTE, and it only supports hard handover, which drastically decreases the bandwidth [39][40][41]. At the time of handover, the server-side adaptation occurs from high-resolution to low-resolution video streaming to achieve better QoE of video monitoring.…”