Coverage Analysis of D2D Relay-Assisted Millimeter-Wave Cellular Networks

Wu, Shuanshuan; Atat, Rachad; Mastronarde, Nicholas; Liu, Lingjia

doi:10.1109/wcnc.2017.7925803

Cited by 23 publications

(18 citation statements)

References 17 publications

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“…As mentioned earlier, we model obstacles as cylinders that are spatially distributed according Proof. The proof can be found in [1].…”

Section: Los Probabilitymentioning

confidence: 98%

“…In [19], we address the problem of incentivizing UEs to relay in commercial cellular networks. Currently, there is only limited research on D2D relay-assisted mmWave cellular communications [1], [27]- [30]. In [27], the authors use stochastic geometry to analyze the connectivity of mmWave networks with multi-hop relaying.…”

Section: A Related Workmentioning

confidence: 99%

“…However, since large scale fading contributes significantly more to the signal power attenuation, we incorporate the LOS/NLOS effect into the path loss model instead of complicating our analysis with Rician fading. 1 The received power over a microwave D2D link with length d is modeled as P Rx = P Tx hA −1 d −α .…”

Section: ) Mmwave Cellular and D2d Linksmentioning

confidence: 99%

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Improving the Coverage and Spectral Efficiency of Millimeter-Wave Cellular Networks Using Device-to-Device Relays

Atat

Mastronarde

et al. 2018

IEEE Trans. Commun.

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The susceptibility of millimeter waveform propagation to blockages limits the coverage of millimeterwave (mmWave) signals. To overcome blockages, we propose to leverage two-hop device-to-device (D2D) relaying. Using stochastic geometry, we derive expressions for the downlink coverage probability of relay-assisted mmWave cellular networks when the D2D links are implemented in either uplink mmWave or uplink microwave bands. We further investigate the spectral efficiency (SE) improvement in the cellular downlink, and the effect of D2D transmissions on the cellular uplink. For mmWave links, we derive the coverage probability using dominant interferer analysis while accounting for both blockages and beamforming gains. For microwave D2D links, we derive the coverage probability considering both line-of-sight (LOS) and non-line-of-sight (NLOS) propagation. Numerical results show that downlink coverage and SE can be improved using two-hop D2D relaying. Specifically, microwave D2D relays achieve better coverage because D2D connections can be established under NLOS conditions. However, mmWave D2D relays achieve better coverage when the density of interferers is large because blockages eliminate interference from NLOS interferers. The SE on the downlink depends on the relay mode selection strategy, and mmWave D2D relays use a significantly smaller fraction of uplink resources than microwave D2D relays.

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“…As mentioned earlier, we model obstacles as cylinders that are spatially distributed according Proof. The proof can be found in [1].…”

Section: Los Probabilitymentioning

confidence: 98%

Section: A Related Workmentioning

confidence: 99%

See 1 more Smart Citation

Improving the Coverage and Spectral Efficiency of Millimeter-Wave Cellular Networks Using Device-to-Device Relays

Atat

Mastronarde

et al. 2018

IEEE Trans. Commun.

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“…Stochastic geometry is also used in [28]- [31]. In [28], the connection probability for mm-wave wireless networks with multi-hop relaying is analyzed.…”

Section: A Related Workmentioning

confidence: 99%

“…The authors of [26], [27] use stochastic geometry to show the improvements in the signal-to-interference-plus-noise ratio (SINR) distribution and coverage probability for a mm-wave cellular network that is assisted by a relay. The results of [27] show the asymptotic gain that can be achieved by using the best relay selection strategy over random relay selection.Stochastic geometry is also used in [28]- [31]. In [28], the connection probability for mm-wave wireless networks with multi-hop relaying is analyzed.…”

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confidence: 99%

On the Benefits of Network-Level Cooperation in Millimeter-Wave Communications

Tatino

Παππάς

Malanchini

et al. 2019

IEEE Trans. Wireless Commun.

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Relaying techniques for millimeter-wave wireless networks represent a powerful solution for improving the transmission performance. In this work, we quantify the benefits in terms of delay and throughput for a random-access multi-user millimeter-wave wireless network, assisted by a full-duplex network cooperative relay. The relay is equipped with a queue for which we analyze the performance characteristics (e.g., arrival rate, service rate, average size, and stability condition). Moreover, we study two possible transmission schemes: fully directional and broadcast. In the former, the source nodes transmit a packet either to the relay or to the destination by using narrow beams, whereas, in the latter, the nodes transmit to both the destination and the relay in the same timeslot by using a wider beam, but with lower beamforming gain. In our analysis, we also take into account the beam alignment phase that occurs every time a transmitter node changes the destination node. We show how the beam alignment duration, as well as position and number of transmitting nodes, significantly affect the network performance. We additionally discuss the impact of beam alignment errors and imperfect self-interference cancellation technique at the relay for full-duplex communications. Moreover, we illustrate the optimal transmission scheme (i.e., broadcast or fully directional) for several system parameters and show that a fully directional transmission is not always beneficial, but, in some scenarios, broadcasting and relaying can improve the performance in terms of throughput and delay. Index TermsMillimeter-waves, network cooperative relaying, beam alignment, random access networks, directional communications.cooperative full-duplex relay that is equipped with a queue. We analyze the impact of directional communications by evaluating two possible transmission schemes: broadcast (BR) and fully directional (FD). Using the former, the UEs transmit simultaneously to both the mmAP and the relay by means of wider beams at lower beamforming gains, whereas, with the FD scheme, the UEs transmit either to the mmAP or to the relay by using narrow beams. Moreover, we take into account the beam alignments that occur every time the transmitters change receiver and scheme. A. Related WorkSeveral works have been proposed for evaluating the benefits of relaying techniques in mmwave communications, e.g, [25]- [34]. In [25], the authors propose a physical layer analysis of cooperative communications for frequencies above 10 GHz and evaluate the outage probability of several multiple access protocols, combining techniques, and relay transmission techniques.The study shows that the use of relays drastically improves the coverage probability and the correlation between the source-relay and relay-destination links can be exploited to improve the performance. The authors of [26], [27] use stochastic geometry to show the improvements in the signal-to-interference-plus-noise ratio (SINR) distribution and coverage probability for a mm-wave cellular network...

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