Seamless Dual-Link Handover Scheme in Broadband Wireless Communication Systems for High-Speed Rail

Tian, Lin; Li, Juan; Huang, Yi; Shi, Jinglin; Zhou, Jihua

doi:10.1109/jsac.2012.120505

Cited by 154 publications

(94 citation statements)

References 21 publications

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“…Also, as cabins of HSTs are usually built with metal like aluminum, there will be huge penetration losses when signals get into carriages [5]. In order to solve these problems, many new cellular architectures such as the distributed antenna system (DAS) [6]- [8] and the mobile relay station (MRS) [9], [10] (or mobile Femtocell [4], [11]) have been investigated. In this paper, the MRS solution with multiple antenna elements are considered as it has been adopted by some widely used standardized wireless channel models such as the WINNER II [12] model and the International Mobile Telecommunications Advanced (IMT-A) model [13] for high mobility scenarios.…”

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confidence: 99%

Performance Investigation of Spatial Modulation Systems Under Non-Stationary Wideband High-Speed Train Channel Models

Wang

Ghazal

et al. 2016

IEEE Trans. Wireless Commun.

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confidence: 99%

Performance Investigation of Spatial Modulation Systems Under Non-Stationary Wideband High-Speed Train Channel Models

Wang

Ghazal

et al. 2016

IEEE Trans. Wireless Commun.

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“…The second one is the dual link approach where there are two antennas [4,5]. One is located on the train front and the other is on the train rear.…”

Section: Introductionmentioning

confidence: 99%

An Expedited Predictive Distributed Antenna System Based Handover Scheme for High-Speed Railway

Ali

Wang

Zhu

et al. 2017

GLOBECOM 2017 - 2017 IEEE Global Communications Conference

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Abstract-High-speed train has drawn considerable attention and become one of the most preferable conveyance mechanism. Each year the manufacture corporations reach a higher speed record which is expected to attain 1000 km/h by 2021 using hyperloop one technology. Moving at such a high speed results in a high handover (HO) rate which makes it challenging for high speed railway (HSR) mobile wireless communication to preserve steady link performance. Employing distributed antenna systems (DASs) along with the two-hop architecture, this paper proposes a fast predictive HO algorithm. In this strategy, the serving cell starts the HO preparation phase in advance by inferring the train current location. Issuing the HO preparation phase in advance reduces the HO latency and reduces the HO command failure probability as well. Lower HO command failure probability means lower HO failure probability which could greatly improve the end-users quality of services (QoS). The analytical results show that the proposed scheme performs better compared with the conventional HO scheme.Index Terms-Mobile Relay, Distributed Antenna System, Handover, Frequency Switch, High-speed Railway. I. INTRODUCTIONCurrently, more and more attempts have been performed to satisfy the ever-growing desire for internet access due to the trending application which connects people all over the globe. This kind of popularity results in wide diverse requirements which range from simple web browsing to mobile video communication, e.g. video conferencing. Lately, high-speed railway (HSR) mobile communication system has paid a lot of attention on providing internet access with high quality of service (QoS) [1] to entice more travelers. With the global tendency towards green environment, the gradual prosperity of high-speed railway (HSR) will make it one of the most leading transportation means in the near feature. Yet, the current available mobile broadband wireless communication technology is only suitable for low-to-medium-mobility scenarios.HSR broadband wireless communication encounters challenges from time varying channel, frequency selective fading, and high penetration loss of 10-40 dB. More importantly, high moving speed leads to frequent handover (HO). For example, an HO would be required every 10 s assuming a coverage area of 1 km in conjunction with a speed of 360 km/h. The frequent HO results in long delay, high packet loss, and high drop off rate, degrading the overall system performance.The current HO solution can be divided into three main categories. The first category is the location based triggering using the global positioning system (GPS) signalling [2,3].

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“…Dual-layer, two-tier, or hierarchical two-hop networks are all terms used to describe offloading-related architectures [2], [3]. Offloading can be applied in vehicles using mobile relays that are deployed in the topology.…”

Section: Introductionmentioning

confidence: 99%

“…To be specific, 51% of the total amount of mobile data traffic was offloaded onto fixed networks through Wi-Fi or femtocells in 2015. When we consider these statistics, we envision that more and more of the smart devices connected to mobile hotspots, for example, on buses and subway/high-speed trains, will be connected to networks, and a good portion of such traffic will be offloaded through Wi-Fi.Dual-layer, two-tier, or hierarchical two-hop networks are all terms used to describe offloading-related architectures [2], [3]. Offloading can be applied in vehicles using mobile relays that are deployed in the topology.…”

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confidence: 99%

Mobile Hotspot Network System for High-Speed Railway Communications Using Millimeter Waves

Choi¹,

Chung²,

Kim³

et al. 2016

ETRI Journal

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We propose a millimeter wave (MMW)-based mobile hotspot network (MHN) system for application in high-speed railways that is capable of supporting a peak backhaul link throughput of 1 Gbps per train at 400 km/h. The MHN system can be implemented in subways and high-speed trains to support passengers with smart devices and provide access to the Internet. The proposed system can overcome the inherent high path loss in MMW through system designs and high antenna gains. We present a simulation of the system performance that shows that a fixed beamforming strategy can provide high signal-tointerference-plus-noise-ratio similar to those of an adaptive beamforming strategy, with the exception of 15% of the train path in which the network can use link adaptation with low-order modulation formats or trigger a handover to maintain the connection. We also demonstrate the feasibility of the MHN system using a test bed deployed in Seoul subway line 8. The backhaul link throughput varies instantaneously between 200 Mbps and 500 Mbps depending on the SNR variations while the train is running. During the field trial, the smartphones used could make connections through offloading. Keywords: Millimeter waves, MHN, Railway communication, Doppler shift, High-speed scenarios, 5G.Manuscript received Apr. 15, 2016; revised July 11, 2016; accepted July 20, 2016 I. IntroductionMobile data traffic has been increasing along with the increased usage of smartphones and the evolution of various networks. Cisco has published a white paper that reported that mobile data traffic has grown 4,000-fold over the past ten years, reaching 3.7 exabytes per month as of 2015 [1]. Due to the ubiquity of handheld devices, there is demand for mobile data not only at home and work, but also on buses and trains. Smartphone users are able to connect to the Internet through cellular networks or utilize offloading, if available. Offloading occurs at the user or device level when users are switched from cellular connections to Wi-Fi or small-cell access connections. The white paper [1] disclosed that mobile offloading exceeded cellular traffic in 2015 for the first time. To be specific, 51% of the total amount of mobile data traffic was offloaded onto fixed networks through Wi-Fi or femtocells in 2015. When we consider these statistics, we envision that more and more of the smart devices connected to mobile hotspots, for example, on buses and subway/high-speed trains, will be connected to networks, and a good portion of such traffic will be offloaded through Wi-Fi.Dual-layer, two-tier, or hierarchical two-hop networks are all terms used to describe offloading-related architectures [2], [3]. Offloading can be applied in vehicles using mobile relays that are deployed in the topology. Vehicles, such as subways and high-speed trains, can be viewed as mobile hotspots that have a large number of users at the same location. The smartphones and tablets of users can connect to a network through Wi-Fi access points (APs) inside a train car. To connect to public land mobil...

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Seamless Dual-Link Handover Scheme in Broadband Wireless Communication Systems for High-Speed Rail

Cited by 154 publications

References 21 publications

Performance Investigation of Spatial Modulation Systems Under Non-Stationary Wideband High-Speed Train Channel Models

Performance Investigation of Spatial Modulation Systems Under Non-Stationary Wideband High-Speed Train Channel Models

An Expedited Predictive Distributed Antenna System Based Handover Scheme for High-Speed Railway

Mobile Hotspot Network System for High-Speed Railway Communications Using Millimeter Waves

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