IEEE 802.11ay: Next-Generation 60 GHz Communication for 100 Gb/s Wi-Fi

Ghasempour, Yasaman; Silva, Claudio R. C. M. da; Cordeiro, Carlos; Knightly, Edward W.

doi:10.1109/mcom.2017.1700393

Cited by 303 publications

(183 citation statements)

References 5 publications

Supporting

Mentioning

182

Contrasting

Order By: Relevance

“…The directional beam requires angular channel information for steering direction of analog beams. Such information is typically acquired by beam training in standardized mmW systems, including IEEE 802.11ad/ay [1] and 5G-NR [2]. However, with increased array size and reduced beam width, the training overhead increases.…”

Section: Introductionmentioning

confidence: 99%

Wideband Millimeter-Wave Beam Training with True-Time-Delay Array Architecture

Han

Boljanovic

Čabrić

2019

2019 53rd Asilomar Conference on Signals, Systems, and Computers

View full text Add to dashboard Cite

Millimeter-wave communications rely on beamforming gain from both transmitters and receivers to compensate for severe propagation loss. To achieve adequate gain, beam training is required to identify propagation directions. The main challenge in beam training arises from maintaining low overhead with increased array size. This paper presents a novel one-shot beam training technique that utilizes the emerging architecture of true-time-delay (TTD) arrays. We first show that TTD arrays facilitate frequency dependent beam steering. The proposed training procedure with TTD arrays then exploits this fact by using a single radio-frequency-chain to multiplex different subcarriers into different sounding directions. We derive conditions on the parameters of TTD array configuration and physical layer to achieve scanning of the entire angular domain with a single orthogonal frequency-division multiplexing (OFDM) training symbol. The estimation of propagation directions with high resolution is achieved via low-complexity digital signal processing of spatially coded subcarriers. Simulation results show that this TTD array based approach requires an order-ofmagnitude fewer training symbols than those of phased arrays.

show abstract

Section: Introductionmentioning

confidence: 99%

Wideband Millimeter-Wave Beam Training with True-Time-Delay Array Architecture

Han

Boljanovic

Čabrić

2019

2019 53rd Asilomar Conference on Signals, Systems, and Computers

View full text Add to dashboard Cite

show abstract

“…skyrocketing data traffic through harnessing multi-GHz bandwidths. Multiple standardization efforts, such as IEEE 802.11ad [1], [2] and ongoing IEEE 802.11ay [3], [4], and large-scale field-trials have paved the road for the commercialization of mmwave communications.…”

mentioning

confidence: 99%

Fast mmwave Beam Alignment via Correlated Bandit Learning

Cheng

Zhang

et al. 2019

IEEE Trans. Wireless Commun.

110

View full text Add to dashboard Cite

Beam alignment (BA) is to ensure the transmitter and receiver beams are accurately aligned to establish a reliable communication link in millimeter-wave (mmwave) systems. Existing BA methods search the entire beam space to identify the optimal transmit-receive beam pair, which incurs significant BA latency on the order of seconds in the worst case. In this paper, we develop a learning algorithm to reduce BA latency, namely Hierarchical Beam Alignment (HBA) algorithm. We first formulate the BA problem as a stochastic multi-armed bandit problem with the objective to maximize the cumulative received signal strength within a certain period. The proposed algorithm takes advantage of the correlation structure among beams such that the information from nearby beams is extracted to identify the optimal beam, instead of searching the entire beam space. Furthermore, the prior knowledge on the channel fluctuation is incorporated in the proposed algorithm to further accelerate the BA process.Theoretical analysis indicates that the proposed algorithm is asymptotically optimal. Extensive simulation results demonstrate that the proposed algorithm can identify the optimal beam with a high probability and reduce the BA latency from hundreds of milliseconds to a few milliseconds in the multipath channel, as compared to the existing BA method in IEEE 802.11ad.

show abstract

“…In the area of IEEE 802. 15 Wireless Personal Area Networks (WPANs), multiple solutions have been proposed for beam management and time-domain coordination in mmWave bands with beam-based transmissions. Solutions based on Time Division Multiple Access (TDMA) have been proposed in [26], [27].…”

Section: Introductionmentioning

confidence: 99%

“…Authors in [28] introduce the concept of an exclusive region to enable concurrent transmission with significant interference reduction in mmWave WPANs, by considering all kinds of directional and omnidirectional transmission/reception antenna patterns. In IEEE 802.11 Wireless Local Area Networks (WLANs) for mmWave, IEEE 802.11ad [14] and IEEE 802.11ay [29], [15] use Carrier Sense Multiple Access (CSMA) and have adopted asynchronous CCA that is implemented omnidirectionally, while the contention window status is maintained per beam. In [30], a distributed MAC protocol is proposed for CSMA-based mesh networks, which employs memory at the nodes to achieve approximate TDMA schedules without explicit coordination.…”

Section: Introductionmentioning

confidence: 99%

New Radio Beam-Based Access to Unlicensed Spectrum: Design Challenges and Solutions

Lagén

Giupponi

Goyal

et al. 2020

IEEE Commun. Surv. Tutorials

105

View full text Add to dashboard Cite

Licensed-Assisted Access (LAA) enabled LTE operators to access unlicensed spectrum while adhering to Listen-Before-Talk (LBT) requirements. LAA is based on enhancements over 4G LTE technology. Differently, 5G New Radio (NR) technology is being designed from the start to support operation in unlicensed bands through a technology referred to as NRbased access to unlicensed spectrum (NR-U). A large amount of unlicensed spectrum has been allocated in millimeter-wave (mmWave) bands, making it an attractive candidate for NR-U. However, the propagation characteristics in mmWave often require beam-based transmissions. Beam-based transmissions enhance spatial reuse, but also complicate interference management due to the dynamic nature of the directional antennas. Therefore, some major design principles need to be revisited in NR-U to address coexistence. This paper elaborates on the design challenges, opportunities, and solutions for NR-U by taking into account beam-based transmissions and the worldwide regulatory requirements. In particular, different problems and the potential solutions related to channel access procedures, frame structure, initial access procedures, HARQ procedures, and scheduling schemes are discussed.

show abstract

IEEE 802.11ay: Next-Generation 60 GHz Communication for 100 Gb/s Wi-Fi

Cited by 303 publications

References 5 publications

Wideband Millimeter-Wave Beam Training with True-Time-Delay Array Architecture

Wideband Millimeter-Wave Beam Training with True-Time-Delay Array Architecture

Fast mmwave Beam Alignment via Correlated Bandit Learning

New Radio Beam-Based Access to Unlicensed Spectrum: Design Challenges and Solutions

Contact Info

Product

Resources

About