University of Oulu

M. Alsenwi, N. H. Tran, M. Bennis, A. Kumar Bairagi and C. S. Hong, "eMBB-URLLC Resource Slicing: A Risk-Sensitive Approach," in IEEE Communications Letters, vol. 23, no. 4, pp. 740-743, April 2019. doi: 10.1109/LCOMM.2019.2900044

eMBB-URLLC Resource Slicing : A Risk-Sensitive Approach

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Author: Alsenwi, Madyan1; Tran, Nguyen H.2; Bennis, Mehdi3,4;
Organizations: 1Department of Computer Science and Engineering, Kyung Hee University, Yongin 446-701, South Korea
2School of Computer Science, The University of Sydney, Sydney, NSW 2006, Australia
3Department of Communications Engineering, University of Oulu, 90014 Oulu, Finland
4Department of Computer Science and Engineering, Kyung Hee University, Seoul 02447, South Korea
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.3 MB)
Persistent link: http://urn.fi/urn:nbn:fi-fe2019052917649
Language: English
Published: Institute of Electrical and Electronics Engineers, 2019
Publish Date: 2019-05-29
Description:

Abstract

Ultra Reliable Low Latency Communication (URLLC) is a 5G New Radio (NR) application that requires strict reliability and latency. URLLC traffic is usually scheduled on top of the ongoing enhanced Mobile Broadband (eMBB) transmissions (i.e., puncturing the current eMBB transmission) and cannot be queued due to its hard latency requirements. In this letter, we propose a risk-sensitive based formulation to allocate resources to the incoming URLLC traffic, while minimizing the risk of the eMBB transmission (i.e., protecting the eMBB users with low data rate) and ensuring URLLC reliability. Specifically, the Conditional Value at Risk (CVaR) is introduced as a risk measure for eMBB transmission. Moreover, the reliability constraint of URLLC is formulated as a chance constraint and relaxed based on Markov's inequality. We decompose the formulated problem into two subproblems in order to transform it into a convex form and then alternatively solve them until convergence. Simulation results show that the proposed approach allocates resources to the incoming URLLC traffic efficiently, while satisfying the reliability of both eMBB and URLLC.

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Series: IEEE communications letters
ISSN: 1089-7798
ISSN-E: 2373-7891
ISSN-L: 1089-7798
Volume: 23
Issue: 4
Pages: 740 - 743
DOI: 10.1109/LCOMM.2019.2900044
OADOI: https://oadoi.org/10.1109/LCOMM.2019.2900044
Type of Publication: A1 Journal article – refereed
Field of Science: 213 Electronic, automation and communications engineering, electronics
Subjects:
Funding: This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea Government (MSIT) (NRF-2017R1A2A2A05000995).
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