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    题名: An Enhanced Handover Scheme for Mobile Relays in LTE-A High-Speed Rail Networks
    作者: Pan, Meng-Shiuan;Lin, Tzu-Ming;Chen, Wen-Tsuen
    贡献者: 淡江大學資訊工程學系
    关键词: Handover;Mobile communication;Relays;Mobile computing;Time measurement;Switches
    日期: 2015-02
    上传时间: 2015-05-08 12:44:33 (UTC+8)
    出版者: IEEE
    摘要: 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.
    關聯: IEEE Transactions on Vehicular Technology 64(2), p.743-756
    DOI: 10.1109/TVT.2014.2322374
    显示于类别:[資訊工程學系暨研究所] 期刊論文

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