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Seamless Mobility under a Dedicated Distributed Antenna System for High-Speed Rail Networks

Ali, Wael W. (2018) Seamless Mobility under a Dedicated Distributed Antenna System for High-Speed Rail Networks. Doctor of Philosophy (PhD) thesis, University of Kent. (Access to this publication is currently restricted. You may be able to access a copy if URLs are provided) (KAR id:78948)

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High-speed railway (HSR) has demonstrated a tremendous growth worldwide, and currently is attaining a maximum velocity of 575 km/h. Such a high speed makes the mobile wireless communications a challenging task for HSR to sustain since the handover (HO) rate increases with speed which might result in a high loss of link connectivity. By employing a dedicated distributed antenna system (DAS) along with the two-hop network architecture for HSR wireless communications, this thesis aims to attain a high system capacity, a more transmission reliability, and consequently a superior mobile wireless communication quality-of-service (QoS) for commuters on HSR.

Second, an enhanced fast predictive HO mechanism is proposed by starting the HO process earlier, when moving from one RAU coverage area to the next where these two RAUs are controlled by different central units (CUs). It shows that the proposed fast HO scheme achieves a lower HO command failure probability than the traditional HO. This leads to a lower HO failure probability which consequently can considerably enhance the end-users' quality-of-service (QoS) experience. Analytical results verify that the proposed schemes can improve the system performance substantially by delivering ultra-reliable low-latency communications.

Finally, with the aim of providing an ultra-reliable low-latency wireless communications, this thesis also proposes an onboard frequency switch scheme to further simplify our previously proposed FSW scheme.

Item Type: Thesis (Doctor of Philosophy (PhD))
Thesis advisor: Wang, Jiangzhou
Subjects: T Technology > TK Electrical engineering. Electronics. Nuclear engineering > TK7800 Electronics > TK7871.6 Antennas and waveguides
Divisions: Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Engineering and Digital Arts
SWORD Depositor: System Moodle
Depositing User: System Moodle
Date Deposited: 22 Nov 2019 10:10 UTC
Last Modified: 16 Feb 2021 14:10 UTC
Resource URI: (The current URI for this page, for reference purposes)
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