• Dr.S.Prabaharan
• Dr.R.Jegadeesan

Internet of things (IoT) is expected to have billions of heterogeneously connected devices, demanding higher spectral efficiency, enhanced capacity and lesser latency. Device-to-Device (D2D) ultra-dense networks (UDN) are one of the potential components of 5G. Due to smaller cell sizes, more frequent handovers should be executed by the system. The devices should be always connected to the best network, while achieving seamless mobility. The handover failure leads to packet loss and degrades the quality of service (QoS). The unessential handover leads to wastage of resources. In this work, a vertical half handover (VHO) scheme is proposed for D2D-UDN. The proposed scheme dynamically selects two thresholds, which enables the system to maintain probability of VHO failure and probability of unessential handover below the desired bounds than the other conventional schemes.

-Device-to-Device (D2D), Heterogeneous networks (HetNet), Probability of unessential VHO, Probability of VHO failure, Ultra-dense networks (UDN).

"HANDOVER SCHEME FOR GSM BASED DEVICE-TO-DEVICE ULTRA DENSE NETWORKS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 4, page no.601-610, April-2019, Available :http://www.jetir.org/papers/JETIRAU06093.pdf

"HANDOVER SCHEME FOR GSM BASED DEVICE-TO-DEVICE ULTRA DENSE NETWORKS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 4, page no. pp601-610, April-2019, Available at : http://www.jetir.org/papers/JETIRAU06093.pdf