Human Blockage Model for Indoor Terahertz Band Communication

Bilgin, Bilgesu A.; Ramezani, Hamideh; Akan, Özgür B.

doi:10.1109/iccw.2019.8757158

Cited by 27 publications

(19 citation statements)

References 12 publications

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“…Moreover, the MAC protocols can also resolve the issue of LoS blockage where the received power of a user device may undergo deep fading due to the device being held in a manner that blocks the LoS path. Studies have shown that such attenuation by the human body can be as high as 20 dB at 60 GHz and up [50], [51]. To mitigate the blockage problem, researchers have proposed a multi-hop scheme at the mmWave and THz bands to form alternative routes [52], [53].…”

Section: Medium Access Control In Thz Band Communicationsmentioning

confidence: 99%

6G and Beyond: The Future of Wireless Communications Systems

2020

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The next generation of wireless communication networks, or 6G, will fulfill the requirements of a fully connected world and provide ubiquitous wireless connectivity for all. Transformative solutions are expected to drive the surge for accommodating a rapidly growing number of intelligent devices and services. Major technological breakthroughs to achieve connectivity goals within 6G include: (i) a network operating at the THz band with much wider spectrum resources, (ii) intelligent communication environments that enable a wireless propagation environment with active signal transmission and reception, (iii) pervasive artificial intelligence, (iv) large-scale network automation, (v) an all-spectrum reconfigurable front-end for dynamic spectrum access, (vi) ambient backscatter communications for energy savings, (vii) the Internet of Space Things enabled by CubeSats and UAVs, and (viii) cell-free massive MIMO communication networks. In this roadmap paper, use cases for these enabling techniques as well as recent advancements on related topics are highlighted, and open problems with possible solutions are discussed, followed by a development timeline outlining the worldwide efforts in the realization of 6G. Going beyond 6G, promising early-stage technologies such as the Internet of NanoThings, the Internet of BioNanoThings, and quantum communications, which are expected to have a far-reaching impact on wireless communications, have also been discussed at length in this paper.

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Section: Medium Access Control In Thz Band Communicationsmentioning

confidence: 99%

6G and Beyond: The Future of Wireless Communications Systems

2020

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“…Another common blockage is a human body, which can be modeled as a cylinder with a radius of R b and a height of H b . Since people stand randomly on the floor, we model the human blockage as a random circle process [24], [25], [34], essentially the bottom center of the cylinder as a two-dimensional homogeneous PPP with intensity of λ b . As illustrated in Fig.…”

Section: Human Blockage Modelmentioning

confidence: 99%

Interference and Coverage Analysis for Terahertz Networks With Indoor Blockage Effects and Line-of-Sight Access Point Association

Kokkoniemi

Han

et al. 2021

IEEE Trans. Wireless Commun.

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Providing high-bandwidth and fast-speed links, wireless local area networks (WLANs) in the Terahertz (THz) band have huge potential for various bandwidth-intensive indoor applications. However, due to the specific phenomena in the THz band, including severe reflection loss, indoor blockage effects, multi-path fading, the analysis on the interference and coverage probability at a downlink is challenging. In this paper, indoor blockage effects caused by the walls and human bodies are analyzed. Next, a statistical THz channel model is proposed to characterize the THz indoor propagation. In light of these, the moment generating functions of the aggregated interference and theoretical expressions for the mean interference power are derived. As a result, the approximated coverage probability and average network throughput are derived. Extensive numerical results show that for the nearest access point (nearest-AP) user association scheme, the optimal AP density is 0.15/m 2 , which results in the coverage probability reaches 93% and the average network throughput is 30 Gbps/m 2 . In addition, by adopting a novel line-of-sight access point (LoS-AP) user association mechanism, the coverage probability and the average network throughput can be further improved by 3 percent and 2 Gbps/m 2 , respectively.

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“…Based on this, the IRS can be conveniently installed in the wireless propagation environment, including the building facade, ceilings, furniture, clothes and other reflecting objects. Currently, research on the coverage problem of the THz communications is still in its infancy [38][39][40][41]. For example, the work in [39] explores the effect of human blockage on performance of the THz system, and employs two transmitters to establish the LoS link and handle the human blockage.…”

Section: Coverage Enhancement For Thz Communicationsmentioning

confidence: 99%

Towards intelligent reflecting surface empowered 6G terahertz communications: A survey

et al. 2021

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Terahertz (THz) communications have been widely envisioned as a promising enabler to provide adequate bandwidth and achieve ultra-high data rates for sixth generation (6G) wireless networks. In order to mitigate blockage vulnerability caused by serious propagation attenuation and poor diffraction of THz waves, an intelligent reflecting surface (IRS), which manipulates the propagation of incident electromagnetic waves in a programmable manner by adjusting the phase shifts of passive reflecting elements, is proposed to create smart radio environments, improve spectrum efficiency and enhance coverage capability. Firstly, some prospective application scenarios driven by the IRS empowered THz communications are introduced, including wireless mobile communications, secure communications, unmanned aerial vehicle (UAV) scenario, mobile edge computing (MEC) scenario and THz localization scenario. Then, we discuss the enabling technologies employed by the IRS empowered THz system, involving hardware design, channel estimation, capacity optimization, beam control, resource allocation and robustness design. Moreover, the arising challenges and open problems encountered in the future IRS empowered THz communications are also highlighted. Concretely, these emerging problems possibly originate from channel modeling, new material exploration, experimental IRS testbeds and intensive deployment. Ultimately, the combination of THz communications and IRS is capable of accelerating the

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Human Blockage Model for Indoor Terahertz Band Communication

Cited by 27 publications

References 12 publications

6G and Beyond: The Future of Wireless Communications Systems

6G and Beyond: The Future of Wireless Communications Systems

Interference and Coverage Analysis for Terahertz Networks With Indoor Blockage Effects and Line-of-Sight Access Point Association

Towards intelligent reflecting surface empowered 6G terahertz communications: A survey

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