LTE/Wi-Fi/mmWave RAN-Level Interworking Using 2C/U Plane Splitting for Future 5G Networks

Mubarak, Ahmed S. A.; Esmaiel, Hamada; Mohamed, Ehab Mahmoud

doi:10.1109/access.2018.2871059

Cited by 32 publications

(27 citation statements)

References 33 publications

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“…In [1], the µW RSS radio map was used as an index to the mmWave best beams radio map for enabling mmWave concurrent transmissions in random access scenarios. In [2], a multi-band heterogenous architecture was introduced for 5G networks based on the integration between LTE/Wi-Fi/mmWave bands empowered by a new concept of 2C/U plane splitting. In [33], utilizing µW/mmWave dual band small cells, scheduling over the two different bands was jointly performed based on user applications.…”

Section: Related Workmentioning

confidence: 99%

“…α ν g is the path loss exponent and ε ν g N 0,δ ν g is the dB shadowing term with zero mean and standard deviation of δ ν g . In (2), TX (θ) and RX (ϕ), represent the TX and RX beam gains, where θ and ϕ represent the angle of departure (AoD) and the angle of arrival (AoA). Using the 2D steerable antenna model with gaussian main loop profile given in [37], [38], TX (θ) can be represented as:…”

Section: ) Mmwave Link Modelmentioning

confidence: 99%

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Relay Probing for Millimeter Wave Multi-Hop D2D Networks

et al. 2020

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The communications in the millimeter wave (mmWave) band, e.g., WiGig (60 GHz), is considered as one of the main components of 5G and beyond 5G (B5G) networks. However, it is characterized by short range transmissions along with high susceptibility to path blockage, e.g., human shadowing. Thus, mmWave multi-hop relaying using device to device (D2D) connections turns to be an efficient solution to extend its communication range and to route around blockages. In this context, relay probing is essential to discover/explore the candidate multi-hop routes from source-to-destination and then select the best route among them. However, a trade-off exists between relay probing and the required overhead coming from mmWave beamforming training. In this paper, taking advantage of the multi-band µW /mmWave relay nodes, an efficient multi-hop relay probing scheme is proposed for mmWave D2D routing. In this scheme, the collected µW received signal strengths (RSSs) among the distributed relay nodes are used to estimate the probability of their mmWave signal-to-noise power ratios (SNRs) while considering line-of-sight (LOS) and non-LOS (NLOS) path availabilities. Then, based on a proposed probabilistic metric, a hierarchical search algorithm is proposed to jointly discover the relay nodes along the candidate multi-hop routes and enumerate the number of routes expected to maximize the spectral efficiency of the whole path from sourceto-destination. This is done in an offline phase, and only the relay nodes located within the pre-selected multi-hop routes are requested to do online relay probing. Numerical analysis confirms the superiority of the proposed mmWave multi-hop relay probing scheme over the candidate techniques. INDEX TERMS Millimeter wave D2D networks, multi-hop relaying, unlicensed µW band, multiband management protocol, relay probing.

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Section: Related Workmentioning

confidence: 99%

Section: ) Mmwave Link Modelmentioning

confidence: 99%

Relay Probing for Millimeter Wave Multi-Hop D2D Networks

et al. 2020

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“…Our envisaged radio access architecture is depicted in Fig.1, where a cloud-oriented mobile network is proposed for a mmWave-based communication and positioning system in which the signals for both UL and DL employ orthogonal frequency division multiplexing (OFDM) waveforms. In addition, a time-division duplex (TDD) protocol is considered in the system with a focus on mmWave-enabled radio access technology (RAT), and a multi-RAT-enabled heterogeneous network (HetNet) was proposed and analyzed in [29]. Moreover, each UE within the network is assumed to be equipped with an omni-directional antenna from which the UL pilot signals 2 are transmitted to the network (i.e., to the APs) in a periodic manner.…”

Section: A System Overviewmentioning

confidence: 99%

Positioning-Aided 3D Beamforming for Enhanced Communications in mmWave Mobile Networks

Koivisto

Talvitie

et al. 2020

IEEE Access

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The extension from centimeter wave frequencies to millimeter wave (mmWave) frequencies has triggered an enormous transformation in terms of radio access architecture for future wireless networks, and it has therefore empowered unlimited opportunities for the user-oriented services and applications. Besides mmWave as a driving element, beamforming (BF) will be incorporated as a key enabling technology for the future wireless networks. In this paper, we propose a positioning-aided beamforming (PA-BF) framework for enhanced downlink communications in a cloud-oriented mmWave mobile networks. We show that the proposed PA-BF achieves a higher effective transmit ratio that is equivalent to a lower initial access latency than the conventional codebook-based BF, which in turn manifests its capability to support high-velocity mobile users. We also analyze the impact of positioning accuracies on the performance of PA-BF and discuss the trade-offs between different BF strategies with varied system parameters. Our simulation results demonstrate that, with a narrow beam phased array and reasonably good positioning accuracy, the PA-BF framework is capable of achieving higher spectral efficiency than the considered codebook-based BF especially at higher velocities. INDEX TERMS Exhaustive beamforming, millimeter wave mobile networks, positioning-aided beamforming, positioning-aided communications.

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“…To withstand mmWave channel impairments, the use of antenna beamforming using either analogue beamforming or hybrid precoding was studied in literature as given in [12,16,17]. For mmWave wireless local area network applications, variety of Wi-Fi/WiGig interworking schemes can be also found in the literature [4,[18][19][20].…”

Section: Related Workmentioning

confidence: 99%

Joint users selection and beamforming in downlink millimetre‐wave NOMA based on users positioning

Mohamed

2020

IET Communications

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LTE/Wi-Fi/mmWave RAN-Level Interworking Using 2C/U Plane Splitting for Future 5G Networks

Cited by 32 publications

References 33 publications

Relay Probing for Millimeter Wave Multi-Hop D2D Networks

Relay Probing for Millimeter Wave Multi-Hop D2D Networks

Positioning-Aided 3D Beamforming for Enhanced Communications in mmWave Mobile Networks

Joint users selection and beamforming in downlink millimetre‐wave NOMA based on users positioning

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