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    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/102869


    Title: An Enhanced Handover Scheme for Mobile Relays in LTE-A High-Speed Rail Networks
    Authors: Pan, Meng-Shiuan;Lin, Tzu-Ming;Chen, Wen-Tsuen
    Contributors: 淡江大學資訊工程學系
    Keywords: Handover;Mobile communication;Relays;Mobile computing;Time measurement;Switches
    Date: 2015-02
    Issue Date: 2015-05-08 12:44:33 (UTC+8)
    Publisher: IEEE
    Abstract: Recently, the mobile relay technique has been discussed to support communication services for Long-Term Evolution Advanced (LTE-A) high-speed rail networks. In the network, there are several mobile relays in a train. User equipment (UE) devices connect to in-car mobile relays instead of outside evolved NodeBs (eNBs). Mobile relays establish backhaul links with the serving donor eNBs (DeNBs) and coordinate control and data flows for UE devices. Since the train travels in high speed, mobile relays suffer from frequent handovers between DeNBs. We observe that the defined handover procedures in LTE-A specifications may incur message overhead and lengthen handover time. In this paper, we propose an enhanced handover scheme, which contains two procedures. The first procedure is an enhanced measurement procedure, which can accelerate the measurement procedure when the mobile relay knows that the train is moving toward some neighbor DeNBs. The second procedure is a group in-network handover procedure, which can aggregate similar in network handover procedures in the core network. Performance evaluations indicate that our design can conserve both time and messages when handover.
    Relation: IEEE Transactions on Vehicular Technology 64(2), p.743-756
    DOI: 10.1109/TVT.2014.2322374
    Appears in Collections:[Graduate Institute & Department of Computer Science and Information Engineering] Journal Article

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