A study of seamless communication method with the adequate switching between optical and RF wireless LAN

Sakurai, Y.; Nishimaki, Kaori; Toguchi, S.; Sakane, M.

doi:10.1109/icce.2003.1218915

Cited by 9 publications

(4 citation statements)

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“…There are several works on VHO for wireless mobile communication scenario considering QoS but no remarkable work in vehicular communication. A VHO architecture for the combination of optical and RF WLANs is projected in Sakurai et al by means of tunneling method. Most of the VHO work mainly measures bit error rate (BER) based on the received signal strength (RSS), signal‐to‐interference ratio (SIR) at the receiver .…”

Section: Introductionmentioning

confidence: 99%

Vehicular HetNet load distribution using centralized control of software‐defined network

Kandar

Paul

Chyne

2020

Int J Communication

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Current vehicular communication systems experience from nonflexible and costly devices, complicated control-plane protocols, and vendor-specific configuration interfaces. In the next generation vehicular communication, a mobile device (MD) will be installed on a car capable of accessing multiple services from different networks. So heterogeneous networks (HetNets) may play a vital role in vehicular communication. Despite heterogeneity, flawless connectivity between different systems is a basic need of the travellers. The key challenge for seamless connectivity is the design of a vertical handover (VHO) scheme.We claim that software-defined networking (SDN) can make things easier in the design and supervision of VHO in vehicular HetNet. The proposed method maximizes the HetNet utilization with lesser handover by balancing the load among the HetNets. Simulation results performed in MATLAB justified that this novel architecture with proper VHO technique boosts the performance by balancing the load, reducing unnecessary VHO, etc. Performance is analyzed by considering four studies, ie, handover served ratio (HSR), on board units (OBUs), OBU served ratio (OSR), and total throughput and total capacities of road side units (RSUs) to serve handover demands from OBUs. It is observed that the HSR increases rapidly as the number of OBUs increases, which indicates almost all the handover requested OBUs are allocated resources by a connected RSU. We also studied the served total throughput by considering VHO with SDN, without SDN in the average case and without SDN in the best case, and it is observed that with SDN as a central controller, the total OSR and total throughput is increased. KEYWORDShandover served ratio, heterogeneous network, RSU selection, software-defined network, vehicular communication INTRODUCTIONThe advancement of wireless networks is creating web browsing, banking, social networking, multimedia services, and other activities user friendly nowadays, even in speedy mobile condition. Current vehicular communication becomes an important part of human's daily life by providing numerous services associated with nonsafety and safety applications. 1 Vehicular ad hoc networks (VANETs) theater a crucial function in order to support the people's demand on wheels, and that will grow 2 very fast in the near future. Even with the increase demand on the requirement for different stand-alone mobile standards, the lack of interest for commercialization of such individual standards are due to cost Int J Commun Syst. 2020;33:e4329.wileyonlinelibrary.com/journal/dac 2 of 13 KANDAR ET AL.factors, backward-compatibility concerns, etc, and the industry will be interested to come together on a common standard. As an outcome, the vehicular communication scenery will continue to vary for the estimated outlook. Building heterogeneity is an important aspect for service providers and mobile device companies to deal with. The mobile system companies are incorporating further network interfaces into their equipment. Currently, various...

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Section: Introductionmentioning

confidence: 99%

Vehicular HetNet load distribution using centralized control of software‐defined network

Kandar

Paul

Chyne

2020

Int J Communication

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“…Hence, the trend is the cooperation among different technologies working in different frequency bands, such as common Radio Frequency (RF) services and Optical Wireless Communications (OWC), which has demonstrated that provides high speed wireless transmission in indoor environments [1]. Although there are already studies and proposals in this field of interest [2], the coexistence between RF and OWC is still an open research area [3], [4], but it is not the focus of this paper. Moreover, although consumer optical communications are mostly guided [5], the number of wireless applications for it is growing in recent years [6], [7], mainly for the following advantages that make OWC an appropriate candidate to complement RF communications:…”

Section: Introductionmentioning

confidence: 99%

Cooperative optical wireless transmission for improving performance in indoor scenarios for visible light communications

Guzmán

Serrano

Jiménez

2015

IEEE Trans. Consumer Electron.

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In this paper, a novel cooperative transmission and reception scheme in Visible Light Communications (VLC) is proposed and evaluated. This new scheme provides improvements and reliability in large indoor scenarios, such as corridors, laboratories, shops or conference rooms, where the coverage needs to be obtained by using different access points when VLC is used. The main idea behind the proposal is a simple cooperative transmission scheme where the receiver terminal will obtain the signal from different access points at the same time. This proposal outperforms traditional VLC schemes, especially in Non-Line-of-Sight reception where around 3 dB of gain with respect to the traditional schemes can be obtained for unoptimized parameters and larger than 3 dB could be easily achieved. The cooperation is studied in terms of the percentage of light coming from the main access point and a parameter called sidelobes' amplitude level. The performance is evaluated according to the location into the atto-cell 1 .

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“…Fundamental analysis for visible‐light communication system using LED lights are discussed in . Numerous studies also have discussed the VLC and the RF systems to be used as complementary technology to each other . The main goal of those studies is to investigate and exploit the heterogeneous nature of such technologies and find the benefit from being used in combination.…”

Section: Introductionmentioning

confidence: 99%

“…The main goal of those studies is to investigate and exploit the heterogeneous nature of such technologies and find the benefit from being used in combination. In , authors develop a seamless communication method between radio and optical [WiFi‐ infrared (IR)] communication systems where the hybrid WiFi‐IR communication system continues to use RF transmission when the communication path of the optical wireless transmission is obstructed and switches back to optical wireless transmission as soon as the optical wireless connection has become stable again. The purpose of using this hybrid radio‐optical architecture is to use high‐speed and secure communication via optical communication whenever it is available.…”

Section: Introductionmentioning

confidence: 99%

Cooperative data download on the move in indoor hybrid (radio‐optical) WLAN‐VLC hotspot coverage

Chowdhury

Katz

2014

Trans. Emerging Tel. Tech.

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In this work, we study the performance of hybrid (radio-optical) wireless local area network (WLAN)-visible light communication (VLC) hotspot and compare its performance with stand-alone VLC-only or WLAN-only hotspot cases. We consider data download on move scenario in an indoor environment for single-user and for multi-user cases. Short-range spotlighting cell so-called VLC hotspot is considered for high data rate region. On the other hand, WLAN hotspot is used for providing reliable connectivity and moderate data rate support. Throughput-distance relationships are developed both for WLAN and VLC to evaluate the performance of indoor environment by taking into account the radio and optical channel characteristics. The impact of the velocity of mobile user(s) and the number of VLC hotspots present in the considered service area are also considered on the performance of hybrid WLAN-VLC hotspot. Simulations have been performed to evaluate the performance of such network for data downloading on move scenario by taking into account performance metrics such as file size, average connectivity and system throughput. Simulation results reveal that the considered hybrid WLAN-VLC performs always better than stand-alone VLC-only or WLAN-only hotspots both for single and multi-user cases.

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A study of seamless communication method with the adequate switching between optical and RF wireless LAN

Abstract: AbstructThis paper presents a method that can continue communication even when i t , is switched over between Optical and R F Wireless JAN.

Cited by 9 publications

References 0 publications

Vehicular HetNet load distribution using centralized control of software‐defined network

Vehicular HetNet load distribution using centralized control of software‐defined network

Cooperative optical wireless transmission for improving performance in indoor scenarios for visible light communications

Cooperative data download on the move in indoor hybrid (radio‐optical) WLAN‐VLC hotspot coverage

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