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Group Handover Strategy for Mobile Relays in LTE-A Networks

Olusegun O. Omitola and Viranjay M. Srivastava
Department of Electronic Engineering, Howard College, University of KwaZulu-Natal, Durban - 4041, South Africa

Abstract--Mobile cell is a new area emerging from the small cell technology that will dominate future networks. Mobile relay plays a major role in mobile cells allowing mobile user equipment (UE) to maintain network connectivity with good quality of experience to the macrocell base station during high speed vehicular movement. Group handover is an excellent solution to handle huge number of handovers associated with moving UEs in the mobile cell. In this paper, an efficient group handover strategy for mobile cell in LTE-Advanced system have been proposed. With the proposed group handover strategy, mobile relay node (MRN) attached to a high-speed train handover all UEs related communication from the source donor eNB (DeNB) to the target DeNB. In addition, unlike most work that uses fixed relay architecture, mobile relay architecture has been used in this work. By applying the proposed group handover strategy to the mobile cell, the number of handovers and call dropping probabilities in the system have been greatly reduced.

Index Terms—Donor eNB, group handover, mobile cell, mobile relay node, LTE-Advanced, small cell.

Cite: Olusegun O. Omitola and Viranjay M. Srivastava, "Group Handover Strategy for Mobile Relays in LTE-A Networks," Journal of Communications, vol. 13, no. 9, pp. 505-511, 2018. Doi: 10.12720/jcm.13.9.505-511.