The IMT 2020 requirements of 20 Gbps peak data rate and 1 millisecond latency present significant engineering challenges for the design of 5G cellular systems. Use of the millimeter wave (mmWave) bands above 10 GHz --- where vast quantities of spectrum are available --- is a promising 5G candidate that may be able to rise to the occasion. However, while the mmWave bands can support massive peak data rates, delivering these data rates on end-to-end service while maintaining reliability and ultra-low latency performance will require rethinking all layers of the protocol stack. This papers surveys some of the challenges and possible solutions for delivering end-to-end, reliable, ultra-low latency services in mmWave cellular systems in terms of the Medium Access Control (MAC) layer, congestion control and core network architecture.
@article{arxiv.1602.06925,
title = {Achieving Ultra-Low Latency in 5G Millimeter Wave Cellular Networks},
author = {Russell Ford and Menglei Zhang and Marco Mezzavilla and Sourjya Dutta and Sundeep Rangan and Michele Zorzi},
journal= {arXiv preprint arXiv:1602.06925},
year = {2016}
}