Enabling Service Continuity Support for Low-Latency Services over Mobile Edge with Ubiquitous Mobility
Guiliang Cai, Qiang Wu, Wei Su · 2024
Mobile edge computing (MEC) is a promising approach to support latency-sensitive and computation-intensive applications by sinking the computational resources to network edges. Due to high-speed and ubiquitous mobility, mobile devices such as autonomous vehicles may encounter service interruptions or increased communication latency when transitioning across network gateways. However, the existing mechanisms fall short of simultaneously achieving both continuity and efficient performance. To address these issues, we investigate a service migration mechanism for MEC, namely SeMiMEC, to support service continuity, while achieving low-latency requirements. In SeMiMEC, both handover management and application migration procedures are novelly devised to collaboratively realize service migration. For service migration, a comprehensive set of signaling operations is designed to provide efficient support for ongoing sessions in each handover scenario. For data communication, the SeMiMEC binds the session information with the identifier to address the issue of certain applications not accommodating changes in communication addresses during an active session. Experimental results show that the proposed SeMiMEC reduces the interruption latency and packet forwarding latency while reducing the data delivery cost as well.