Design and Assessment of Low-Latency Random Access Procedures in 5G Networks
We design and assess novel random access (RA) procedures for use in 5G radio access networks in support of machine-type applications requiring Ultra-Reliable Low-Latency Communications (URLLC). In a simulation-based performance assessment the proposed RA procedures are compared against LTE Cat-M1 (or LTE-M), the current LTE-based access technology for such applications, considering a Factory of the Future scenario and a realistic density and mix of URLLC and non-URLLC devices. As a key outcome, the most promising Two-step RA with Feedback procedure is demonstrated to be able to satisfy the 3GPP-imposed 10 ms (50 ms) latency requirement of URLLC (non-URLLC) applications in 99.901% (99.997%) of the cases, with a theoretical minimum access latency of only 5 ms.
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Factory of the Future
Mobile telecommunication systems
Radio access networks
Simulation-based performance assessments
Institute of Electrical and Electronics Engineers Inc.
2019 European Conference on Networks and Communications, EuCNC 2019, 28th European Conference on Networks and Communications, EuCNC 2019, 18 June 2019 through 21 June 2019, 406-411