An inter-slice mobility with data offloading scheme using hierarchical-tunneling-based proxy mobile IPv6 for 5G networks
by Yuh-Shyan Chen; Chih-Shun Hsu; Wei-Ming Wu
International Journal of Ad Hoc and Ubiquitous Computing (IJAHUC), Vol. 48, No. 3, 2025

Abstract: Session continuity across different slices is critical for inter-slice mobility in 5G networks. To minimise service disruption latency, the MIPV6-RR/BU and GTPv1-U protocol was proposed for session continuity. However, this approach results in higher resource utilisation overhead compared to the 3GPP standard scheme. In this paper, we introduce a new inter-slice mobility scheme for 5G networks using the hierarchical-tunneling-based proxy mobile IPv6 (HTISDO) protocol. This scheme combines the existing proxy mobile IPv6 protocol with an inter-slice mobility protocol and addresses data offloading to facilitate network-initiated inter-slice mobility for load balancing. The main contribution of our HTISDO scheme is to alleviate the problem of frequent access to the 5G core network for requesting new network slices and re-establishing sessions, thereby enhancing service continuity. Experimental results show that our HTISDO scheme reduces the average transmission delay by approximately 10.6% and improves the average throughput by about 12.5% compared to existing inter-slice mobility schemes.

Online publication date: Tue, 11-Feb-2025

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