Radio interface design for ultra-low latency millimeter-wave communications in 5G Era

Levanen, Toni; Pirskanen, Juho; Valkama, Mikko

doi:10.1109/glocomw.2014.7063633

Cited by 39 publications

(34 citation statements)

References 12 publications

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“…It is widely contended that 5G mmWave systems will target Time Division Duplex (TDD) operation because it offers improved utilization of wider bandwidths and the opportunity to take advantage of channel reciprocity for channel estimation [3], [69]- [72]. In addition, shorter symbol periods and/or slot lengths have been proposed in order to reduce radio link latency [73]- [75]. The ns-3 mmWave module therefore implements a TDD frame structure which is designed to be configurable and supports short slots in the hope that it will be useful for evaluating different potential designs and numerologies.…”

Section: A Frame Structurementioning

confidence: 99%

End-to-End Simulation of 5G mmWave Networks

Mezzavilla

Zhang

Polese

et al. 2018

IEEE Commun. Surv. Tutorials

376

237

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Due to its potential for multi-gigabit and low latency wireless links, millimeter wave (mmWave) technology is expected to play a central role in 5th generation (5G) cellular systems. While there has been considerable progress in understanding the mmWave physical layer, innovations will be required at all layers of the protocol stack, in both the access and the core network. Discrete-event network simulation is essential for end-to-end, cross-layer research and development. This paper provides a tutorial on a recently developed full-stack mmWave module integrated into the widely used open-source ns-3 simulator. The module includes a number of detailed statistical channel models as well as the ability to incorporate real measurements or raytracing data. The Physical (PHY) and Medium Access Control (MAC) layers are modular and highly customizable, making it easy to integrate algorithms or compare Orthogonal Frequency Division Multiplexing (OFDM) numerologies, for example. The module is interfaced with the core network of the ns-3 Long Term Evolution (LTE) module for full-stack simulations of end-to-end connectivity, and advanced architectural features, such as dualconnectivity, are also available. To facilitate the understanding of the module, and verify its correct functioning, we provide several examples that show the performance of the custom mmWave stack as well as custom congestion control algorithms designed specifically for efficient utilization of the mmWave channel.This work has been submitted to IEEE Communication Surveys and Tutorials for possible publication.

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Section: A Frame Structurementioning

confidence: 99%

End-to-End Simulation of 5G mmWave Networks

Mezzavilla

Zhang

Polese

et al. 2018

IEEE Commun. Surv. Tutorials

376

237

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“…It addresses ultra low latency along with the multiple users, short bursty traffic and beam forming architecture constraints. The study [96] focuses on three critical higher-layer design areas: low latency core network architecture, flexible MAC [96] Low latency core network architecture, flexible MAC layer, and congestion control " " [97] mmWave based physical layer air interface with basic numerology and logical channel arrangement " [98] Low latency frame structure with beam tracking " Location information utilization in protocol stack Latency, scalability and robustness can be improved.…”

Section: G Mmwave Communicationsmentioning

confidence: 99%

“…[193] A framework supporting of in-band, point-to-multipoint, non-Line-of-sight and mmWave backhaul. [194] A mmWave based backhaul frame structure in 3 -10 GHz carrier frequencies. [179], [195] Ultra dense wavelength division multiplexing (UDWDM) passive optical networks (PONs) based backhaul solution for mmWave networks.…”

Section: Categorymentioning

confidence: 99%

See 1 more Smart Citation

A Survey on Low Latency Towards 5G: RAN, Core Network and Caching Solutions

Parvez

Rahmati

Güvenç

et al. 2018

IEEE Commun. Surv. Tutorials

742

395

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The fifth generation (5G) wireless network technology is to be standardized by 2020, where main goals are to improve capacity, reliability, and energy efficiency, while reducing latency and massively increasing connection density. An integral part of 5G is the capability to transmit touch perception type real-time communication empowered by applicable robotics and haptics equipment at the network edge. In this regard, we need drastic changes in network architecture including core and radio access network (RAN) for achieving end-to-end latency on the order of 1 ms. In this paper, we present a detailed survey on the emerging technologies to achieve low latency communications considering three different solution domains: RAN, core network, and caching. We also present a general overview of 5G cellular networks composed of software defined network (SDN), network function virtualization (NFV), caching, and mobile edge computing (MEC) capable of meeting latency and other 5G requirements.

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“…Motivated by the flexible frame structure in 5G, [8] proposed to fulfil the strict delay constraints for MCC users by dynamically selecting the TTI length in FDD system, using reverse calculation based on the delay budgets. Along similar lines, in [9] the authors apply the variable frame duration to achieve the ultra-low latency in millimeter-wave communication. Both works use the strategy that short TTI is selected first when MCC users exist in the system, followed by long TTI lengths when reaching steady state operation.…”

Section: Introductionmentioning

confidence: 98%

Resource Scheduling for Mixed Traffic Types with Scalable TTI in Dynamic TDD Systems

Liao

Baracca

Liu

et al. 2016

2016 IEEE Globecom Workshops (GC Wkshps)

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Abstract-This paper analyses the performance benefits of a user-centric scheduling approach, exploiting the flexibility of both dynamic time division duplex (TDD) and a variable transmission time interval (TTI), where the downlink to uplink ratio and TTI duration can be adapted to the traffic load. The formulation of the joint optimisation problem takes into consideration the individual requirements of each single user in terms of sustainable latency and desired throughput, thus implementing a real user-centric scheduling approach. Moreover, the developed solution is evaluated in a scenario with mixed traffic types, mobile broadband (MBB) and mission critical communications (MCC), showing remarkable performance enhancement of the proposed scheme over baseline dynamic TDD schemes with a fixed TTI in terms of both achievable throughput of the MBB users and guaranteed latency for the MCC users.

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Radio interface design for ultra-low latency millimeter-wave communications in 5G Era

Cited by 39 publications

References 12 publications

End-to-End Simulation of 5G mmWave Networks

End-to-End Simulation of 5G mmWave Networks

A Survey on Low Latency Towards 5G: RAN, Core Network and Caching Solutions

Resource Scheduling for Mixed Traffic Types with Scalable TTI in Dynamic TDD Systems

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