@inproceedings{a45af67d92b241338df50f9876c9e7cb,
title = "Coexistence of URLLC and eMBB Services in the C-RAN Uplink: An Information-Theoretic Study",
abstract = "The performance of orthogonal and non-orthogonal multiple access is studied for the multiplexing of enhanced Mobile BroadBand (eMBB) and Ultra-Reliable Low-Latency Communications (URLLC) users in the uplink of a multi-cell Cloud Radio Access Network (C-RAN) architecture. While eMBB users can operate over long codewords spread in time and frequency, URLLC users' transmissions are random and localized in time due to their low-latency requirements. These requirements also call for decoding of URLLC packets to be carried out at the edge nodes (ENs), whereas eMBB traffic can leverage the interference management capabilities of centralized decoding at the cloud. Using information-theoretic arguments, the performance tradeoffs between eMBB and URLLC traffic types are investigated in terms of rate for the former, and rate, access latency, and reliability for the latter. The analysis includes non-orthogonal multiple access (NOMA) with different decoding architectures, such as puncturing and successive interference cancellation (SIC). The main results bring insight on effective design choices as a function of inter-cell interference, signal-to-noise ratio levels, and fronthaul capacity constraints.",
keywords = "5G, C-RAN, Information Theory, URLLC, eMBB",
author = "Rahif Kassab and Osvaldo Simeone and Petar Popovski",
note = "Funding Information: The work of Rahif Kassab, Osvaldo Simeone and Petar Popovski has received funding from the European Research Council (ERC) under the European Union Horizon 2020 research and innovation program (grant agreements 725731 and 648382).; 2018 IEEE Global Communications Conference, GLOBECOM 2018 ; Conference date: 09-12-2018 Through 13-12-2018",
year = "2018",
doi = "10.1109/GLOCOM.2018.8647460",
language = "English (US)",
series = "2018 IEEE Global Communications Conference, GLOBECOM 2018 - Proceedings",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
booktitle = "2018 IEEE Global Communications Conference, GLOBECOM 2018 - Proceedings",
address = "United States",
}