A Dual-Link Soft Handover Scheme for C/U Plane Split Network in High-Speed Railway

The heterogeneous network architecture based on control/user (C/U) plane split is a research hot spot in the fifth generation (5G) communication system. This new architecture for the high-speed railway (HSR) communication system can provide high quality of service (QoS) for the passengers, such as h...

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Main Authors: Junhui Zhao, Yunyi Liu, Yi Gong, Chuanyun Wang, Lisheng Fan
Format: Article
Language:English
Published: IEEE 2018-01-01
Series:IEEE Access
Subjects:
Online Access:https://ieeexplore.ieee.org/document/8268654/
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spelling doaj-b6e0d3eaf57b4c958773902f7fb567082021-03-29T20:42:27ZengIEEEIEEE Access2169-35362018-01-016124731248210.1109/ACCESS.2018.27947708268654A Dual-Link Soft Handover Scheme for C/U Plane Split Network in High-Speed RailwayJunhui Zhao0https://orcid.org/0000-0002-4429-494XYunyi Liu1Yi Gong2Chuanyun Wang3Lisheng Fan4https://orcid.org/0000-0002-9783-1366School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing, ChinaSchool of Electronic and Information Engineering, Beijing Jiaotong University, Beijing, ChinaDepartment of Electrical and Electronic Engineering, Southern University of Science and Technology of China, Shenzhen, ChinaSchool of Information Engineering, East China Jiaotong University, Nanchang, ChinaSchool of Computer Science and Educational Software, Guangzhou University, Guangzhou, ChinaThe heterogeneous network architecture based on control/user (C/U) plane split is a research hot spot in the fifth generation (5G) communication system. This new architecture for the high-speed railway (HSR) communication system can provide high quality of service (QoS) for the passengers, such as higher system transmission capacity, better transmission reliability, and lower co-channel interference. The relatively critical C plane is expanded and maintained in a reliable low-frequency band to guarantee transmission reliability, and the U plane is supported by the available high-frequency band to meet the increasing system capacity demands. However, there are still many problems to be solved in the C/U plane split network to ensure reliable transmission. In the HSR communication system, the C plane and the U plane are supported by the macro evolved NodeBs (eNBs) and the small eNBs, respectively. The handover between the different macro eNBs involves two types of handovers, which directly reduces its applicability and reliability in HSR. Therefore, a dual-link soft handover scheme for C/U plane split network in HSR is proposed in this paper. By deploying a train relay station (TRS) and two antennas in the train, the handover outage probability will be reduced. Moreover, the bi-casting is adopted to decrease the communication interruption time and the signaling flows of the intra-macro eNB handover and inter-macro eNB handover are designed in detail. Simulation results show that the proposed handover scheme can significantly reduce the outage probability and improve the handover success probability in the inter-macro eNB handover.https://ieeexplore.ieee.org/document/8268654/High-speed railway (HSR)C/U plane splithandoverdual-linkbi-casting
collection DOAJ
language English
format Article
sources DOAJ
author Junhui Zhao
Yunyi Liu
Yi Gong
Chuanyun Wang
Lisheng Fan
spellingShingle Junhui Zhao
Yunyi Liu
Yi Gong
Chuanyun Wang
Lisheng Fan
A Dual-Link Soft Handover Scheme for C/U Plane Split Network in High-Speed Railway
IEEE Access
High-speed railway (HSR)
C/U plane split
handover
dual-link
bi-casting
author_facet Junhui Zhao
Yunyi Liu
Yi Gong
Chuanyun Wang
Lisheng Fan
author_sort Junhui Zhao
title A Dual-Link Soft Handover Scheme for C/U Plane Split Network in High-Speed Railway
title_short A Dual-Link Soft Handover Scheme for C/U Plane Split Network in High-Speed Railway
title_full A Dual-Link Soft Handover Scheme for C/U Plane Split Network in High-Speed Railway
title_fullStr A Dual-Link Soft Handover Scheme for C/U Plane Split Network in High-Speed Railway
title_full_unstemmed A Dual-Link Soft Handover Scheme for C/U Plane Split Network in High-Speed Railway
title_sort dual-link soft handover scheme for c/u plane split network in high-speed railway
publisher IEEE
series IEEE Access
issn 2169-3536
publishDate 2018-01-01
description The heterogeneous network architecture based on control/user (C/U) plane split is a research hot spot in the fifth generation (5G) communication system. This new architecture for the high-speed railway (HSR) communication system can provide high quality of service (QoS) for the passengers, such as higher system transmission capacity, better transmission reliability, and lower co-channel interference. The relatively critical C plane is expanded and maintained in a reliable low-frequency band to guarantee transmission reliability, and the U plane is supported by the available high-frequency band to meet the increasing system capacity demands. However, there are still many problems to be solved in the C/U plane split network to ensure reliable transmission. In the HSR communication system, the C plane and the U plane are supported by the macro evolved NodeBs (eNBs) and the small eNBs, respectively. The handover between the different macro eNBs involves two types of handovers, which directly reduces its applicability and reliability in HSR. Therefore, a dual-link soft handover scheme for C/U plane split network in HSR is proposed in this paper. By deploying a train relay station (TRS) and two antennas in the train, the handover outage probability will be reduced. Moreover, the bi-casting is adopted to decrease the communication interruption time and the signaling flows of the intra-macro eNB handover and inter-macro eNB handover are designed in detail. Simulation results show that the proposed handover scheme can significantly reduce the outage probability and improve the handover success probability in the inter-macro eNB handover.
topic High-speed railway (HSR)
C/U plane split
handover
dual-link
bi-casting
url https://ieeexplore.ieee.org/document/8268654/
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