Low-Latency Networking: Where Latency Lurks and How to Tame It
Author(s)
Modiano, Eytan H
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While the current generation of mobile and fixed communication networks has been standardized for mobile broadband services, the next generation is driven by the vision of the Internet of Things and mission-critical communication services requiring latency in the order of milliseconds or submilliseconds. However, these new stringent requirements have a large technical impact on the design of all layers of the communication protocol stack. The cross-layer interactions are complex due to the multiple design principles and technologies that contribute to the layers' design and fundamental performance limitations. We will be able to develop low-latency networks only if we address the problem of these complex interactions from the new point of view of submilliseconds latency. In this paper, we propose a holistic analysis and classification of the main design principles and enabling technologies that will make it possible to deploy low-latency wireless communication networks. We argue that these design principles and enabling technologies must be carefully orchestrated to meet the stringent requirements and to manage the inherent tradeoffs between low latency and traditional performance metrics. We also review currently ongoing standardization activities in prominent standards associations, and discuss open problems for future research.
Date issued
2019-02Department
Massachusetts Institute of Technology. Laboratory for Information and Decision Systems; Massachusetts Institute of Technology. Department of Aeronautics and AstronauticsJournal
Proceedings of the IEEE
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Citation
Jiang, Xiaolin et al. “Low-Latency Networking: Where Latency Lurks and How to Tame It.” Proceedings of the IEEE, vol. 107, no. 2, 2019, pp. 280-306 © 2019 The Author(s)
Version: Author's final manuscript
ISSN
0018-9219