Decoupled TCP Extension for VLC Hybrid Network

Liu, Yanbing; Qin, Xiaowei; Zhang, Tianyi; Zhu, Ting; Chen, Xiaohui; Wei, Guo

doi:10.1364/jocn.10.000563

Cited by 8 publications

(5 citation statements)

References 13 publications

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“…The physical (PHY) layer, on the transmitter side, decides on the bit representation across the networking medium and on the illumination level, while on the receiver side, it is in charge of detecting the message-signal. An example of a protocol for VLC-based networks, referred to as decoupled TCP, is proposed in [11]. While this protocol utilizes the layered-architecture of the TCP/IP model, it considers a unidirectional link between VLC APs and UDs in an aggregate VLC-based network.…”

Section: Vlc-based Communication Protocolmentioning

confidence: 99%

VLC-Based Networking: Feasibility and Challenges

et al. 2020

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Visible-light communication (VLC) has emerged as a prominent technology to address the radio spectrum shortage. It is characterized by the unlicensed and unexploited high bandwidth, and provides the system with cost-effective advantages because of the dual-use of light bulbs for illumination and communication and the low complexity design. It is considered to be utilized in various telecommunication systems, including 5G, and represents the key technology for light-fidelity. To this end, VLC has to be integrated into the existing telecommunication networks. Therefore, its analysis as a network technology is momentous. In this article, we consider the feasibility of using VLC as a network technology and discuss the challenges related to the implementation of a VLC-based network, as well as the integration of VLC into existing conventional networks and its inclusion in standards.Visible light communication (VLC) is a data transmission technology which exploits the light beam as a communication medium. It is a variant of optical wireless communications, which uses light-emitting diodes (LEDs) as antennas and is characterized by short transmission range. In the indoor environment, VLC provides both data transmission and illumination [1]. Its main applications include light-fidelity (Li-Fi), indoor positioning, as well as vehicle-to-vehicle and infrastructure-to-vehicle communications. It has recently been demonstrated that using laser diodes (LDs), VLC can also be utilized in access networks [2]. The efficient utilization of VLC for such applications requires its analysis as a network technology, which is the focus of this article.The interest in the VLC technology can be evidenced by the growing number of research works in the literature [1,3,4,5,6] (and references therein), the prototypes and field trials proposed by researchers and industry, and by the standardization activities. Following these efforts, the effective deployment is seen as the next key step. Several challenges are to be overcome when practically deploying communication systems using VLC in both simplex and duplex configurations. Among these challenges, we underline the fact that the return path in a VLC-based communication system may use a different technology, such as radio frequency (RF), power line communication, fiber optics, and free space optical. If using VLC, the return path can be based on a different wavelength. Another important challenge is the illumination coverage. The VLC transmission range is limited, as it is imposed by the lighting coverage of the source, which is short by nature [7]. LEDs and LDs are the two main types of light sources considered in VLC. Compared to LEDs, whose lighting range is only a couple of hundred meters, LDs provide an illumination coverage in the order of a couple of kilometers. On the other hand, since only positive and real signals can be successfully transmitted in VLC systems, the modulation schemes that can be employed should produce a non-complex and asymmetric signal. * Alain R. Ndjiongue is with ...

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Section: Vlc-based Communication Protocolmentioning

confidence: 99%

VLC-Based Networking: Feasibility and Challenges

et al. 2020

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“…Finally, in [7] and [8] MPTCP in hybrid networks including VLC were investigated. In [7], a novel decoupled TCP extension protocol for a VLC hybrid network was proposed, where decoupling operation to TCP transmission overcomes the limitation of regular TCP by allowing the users full utilization of network resources by the users. Based on Linux-kernel, they showed higher throughputs for multipath decoupled TCP (MP-DETCP) compared with DETCP for different downlink packet loss ratios.…”

Section: Related Workmentioning

confidence: 99%

A Flexible Transport Layer Protocol Architecture for Handover in a Vehicular VLC Network

Jarchlo

Gawłowicz

Doroud

et al. 2020

2020 12th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP)

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Recent research works have focused on feasibility of using the multipath-transmission control protocol (MPTCP) in order to optimize the network throughput and latency. In this work, we propose a novel architecture using MPTCP for a vehicular visible light communications (VLC) network to improve the performance in terms of network outage duration and throughout. Two relevant MPTCP schedulers and an MPTCP tool is selected to analyze VLC performance during the handover. The results show that the proposed system offers lowoutage duration handover of 24 ms and a high data throughput of 125 Mbps using "Redundant" and "Default" schedulers, respectively.

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“…Some studies have been conducted to improve the performance of hybrid VLC [13][14][15][16]. The hybrid VLC is suitable to provide services based on VLC.…”

Section: Unidirectional Vlcmentioning

confidence: 99%

Framework of IoT Services over Unidirectional Visible Lights Communication Networks

Kim

Koh

2020

Electronics

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Visible Light Communication (VLC) has been noted as an emerging technology for communications in wireless local area networks. VLC provides some distinctive features over the conventional wireless access technologies, such as Wi-Fi, Bluetooth, or ZigBee. The most prominent feature of VLC is that it can provide more exact location information, since it is based on a particular light. In addition, VLC can reduce the frequency interferences from numerous wireless channels, since it uses a completely different radio frequency channel from the conventional wireless access technologies. Thus, VLC can be used for Internet-of-Things (IoT) services. Nevertheless, up to now, not enough studies on how to provide IoT services over VLC networks have been conducted. In this paper, we propose a framework to provide IoT services in VLC networks. In particular, we will consider the unidirectional VLC network, in which the downlink channel from the VLC transmitter to the VLC receiver is given by using VLC communication, whereas the uplink channel from the VLC receiver to the VLC transmitter is implemented by using another wireless access technology, such as Wi-Fi. This is because most of the VLC receivers, such as mobile phones, cannot support the uplink VLC communication. Based on the framework of IoT services over unidirectional VLC, in this paper, we also propose the VLC–IoT protocol (VIP) which is an application layer protocol for data transport with the session management functionality that can be used to effectively provide IoT services among IoT servers, VLC transmitters and VLC receivers in the networks. The proposed VIP protocol is implemented by using the Cooja simulator. For performance analysis, the proposed scheme is compared with the existing CoAP-based scheme that does not provide the session management. From a variety of simulation experiments, we see that the proposed scheme can provide lower data transmission and handover delays, compared to the existing scheme.

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Decoupled TCP Extension for VLC Hybrid Network

Cited by 8 publications

References 13 publications

VLC-Based Networking: Feasibility and Challenges

VLC-Based Networking: Feasibility and Challenges

A Flexible Transport Layer Protocol Architecture for Handover in a Vehicular VLC Network

Framework of IoT Services over Unidirectional Visible Lights Communication Networks

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