Performance Evaluation of Handover Protocols in Software Defined Networking Environment

Lee, Dong-Ru; Jaffry, Shan; Hasan, Syed Faraz; Kuo, Yaw-Wen; Gui, Xiang

doi:10.1007/978-3-319-94965-9_24

Cited by 5 publications

(2 citation statements)

References 11 publications

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“…In cellular networks, handover is required to support user mobility when they travel from the coverage of one base station to another [127]. Legacy handover mechanisms are based on comparing received signal strength, i.e., a handover is triggered when the received signal strength of the target base station exceeds that of the serving base station by a certain threshold offset [128].…”

Section: Handovermentioning

confidence: 99%

A Comprehensive Survey on Moving Networks

Jaffry

Hussain

Gui

et al. 2020

Preprint

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The unprecedented increase in the demand for mobile data, fuelled by new emerging applications and usecases such as high-definition video streaming and heightened online activities has caused massive strain on the existing cellular networks. As a solution, the fifth generation (5G) of cellular technology has been introduced to improve network performance through various innovative features such as millimeter-wave spectrum and Heterogeneous Networks (HetNet). In essence, HetNets include several small cells underlaid within macro-cell to serve densely populated regions like stadiums, shopping malls, and so on. Recently, a mobile layer of HetNet has been under consideration by the researchers and is often referred to as moving networks. Moving networks comprise of mobile cells that are primarily introduced to improve Quality of Service (QoS) for commuting users inside public transport because the QoS is deteriorated due to vehicular penetration losses and high Doppler shift. Furthermore, the users inside fast moving public transport also exert excessive load on the core network due to large group handovers. To this end, mobile cells will play a crucial role in reducing overall handover count and will help in alleviating these problems by decoupling in-vehicle users from the core network. This decoupling is achieved by introducing separate in-vehicle access link, and out-of-vehicle backhaul links with the core network. Additionally sidehaul links will connect mobile cells with their neighbors.To date, remarkable research results have been achieved by the research community in addressing challenges linked to moving networks. However, to the best of our knowledge, a discussion on moving networks and mobile cells in a holistic way is missing in the current literature. To fill the gap, in this paper, we comprehensively survey moving networks and mobile cells. We cover the technological aspects of moving cells and their applications in the futuristic applications. We also discuss the use-cases and value additions that moving networks may bring to future cellular architecture and identify the challenges associated with them. Based on the identified challenges we discuss the future research directions.

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Section: Handovermentioning

confidence: 99%

A Comprehensive Survey on Moving Networks

Jaffry

Hussain

Gui

et al. 2020

Preprint

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“…The commuters inside these mobile-platforms experience low quality of service (QoS) due to vehicular penetration loss (VPL), which can be as high as 25 dB [5]. Additionally, simultaneous group handovers from public transport generate excessive amount of undesired signaling [6], [7]. Hence researchers aim to unite such users into a single entity as seen by the core-network and call it a mobilecell (MC).…”

Section: Introductionmentioning

confidence: 99%

Shared Spectrum for Mobile-Cell's Backhaul and Access Link

Jaffry

Hasan

Gui

2018

2018 IEEE Global Communications Conference (GLOBECOM)

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Offloading cellular hotspot regions to small-cells has been the main theme for the fifth generation of cellular network. One such hotspot is the public transport which carries a large number of cellular users who frequently receive low quality of service (QoS) due to vehicular penetration effect (VPE). Hence installation of mobile-cell (MC) within public transport is seen as a potential enabler to enhance QoS for commuting users. However, unlike fixed cells, MC requires wireless backhaul (BH) connectivity along with in-vehicle Access-Link (AL) communication. These additional wireless links for MC communication will pose an excessive burden on an already scarce frequency spectrum. Hence, in this research, we exploit VPE and line-ofsight (LOS) communication to allow the downlink backhaul (DL-BH) sub-channels to be shared by in-vehicle downlink accesslink (DL-AL) transmission. Our analysis and simulations show that using the above-mentioned technique, both links maintain high success probability, especially in regions with low signal to interference ratios.

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