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An Enhanced Handover Scheme Adopting Mobile Relays in a LTE-A Network for High-Speed Movements

机译：在LTE-A网络中采用移动中继的高速移动增强切换方案

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In a high movement environment, handover occurs frequently in a mobile network and degrades the quality of mobile communication and service. The shorter the handover delay is, the better the communication quality can be obtained. To shorten the handover delay for a bunch of UEs moving in the same direction, mobile relays (MR), an intermediate role between a UE and an eNodeB (eNB), have been introduced to support mobile communication and service in a Long-Tern Evolution Advanced (LTE-A) network for high-speed rail systems. MR acts as an eNB for the UE, and acts as a UE for the eNB. Since a train travels along a fixed trajectory, target eNB are predicatible when handover is required. Based on such an assumption, we design an enhanced handover scheme to simultaneously synchronize the target eNB and complete the path switch among the serving eNB and target eNB. We run several simulations to show that the proposed scheme can shorten 29.63% of the handover delay.
机译：在高移动环境中，切换经常在移动网络中发生，并且降低了移动通信和服务的质量。切换延迟越短，可获得的通信质量越好。为了缩短沿相同方向移动的一堆UE的切换延迟，已经引入了移动中继（MR），它是UE与eNodeB（eNB）之间的中间角色，以支持Long-Tern演进中的移动通信和服务适用于高铁系统的高级（LTE-A）网络。 MR充当UE的eNB，并充当eNB的UE。由于火车沿着固定的轨迹行进，因此在需要切换时可以确定目标eNB。基于这样的假设，我们设计了一种增强的切换方案，以同时同步目标eNB并完成服务eNB与目标eNB之间的路径切换。我们进行了一些仿真，结果表明所提出的方案可以缩短29.63％的切换延迟。

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