A Comparative Study on Anchorless Routing in 5G System

In vehicle-to-vehicle communications with the assistance of network (V2N2V), it is important to reduce the end-to-end delay between vehicles. However, the current 5G system as well as existing studies do not satisfy this in some mobility scenarios. To address this issue, we propose three methods that enhance an anchorless routing that follows the concept of Locator/ID Separation Protocol (LISP). In these methods, the control plane node proactively injects mapping information of the vehicle's ID and its locator to suitable user-plane nodes. We show that the proposed methods can reduce the delay by up to 81% than the current 5G System on evaluations using mobility scenarios.