Deakin University
Browse

File(s) not publicly available

Rare-Event Analysis of Packet-Level Coding for URLLC via Virtual Queue

journal contribution
posted on 2023-02-14, 03:43 authored by Jinho ChoiJinho Choi
In this paper, we propose a method to analyze the performance of ultra-reliable low-latency communication (URLLC) with packet-level coding when no feedback from a receiver is available. Unlike conventional methods of analyzing URLLC performance using average error rate, we focus on the events of burst or clustered (reception) errors1 as they can be fatal for certain real-time wireless control systems. In the proposed method, to see the impact of clustered errors on the performance, a virtual queue is considered, where the reception error sequence is regarded as the arrival process and the departure process is characterized by the target error rate. This virtual queue allows to find how often the events of clustered errors of certain sizes occur using large deviations theory. For packet-level channels modeled by an independent and identically distributed process and a two-state Markov chain, the quality-of-service exponents are derived, and the asymptotic probability of buffer overflow is obtained, which agrees with simulation results. This demonstrates that the proposed method using virtual queue is useful to find the probability of system failure due to clustered errors and allows to determine the values of key parameters of URLLC for a certain probability of system failure under given conditions.

History

Journal

IEEE Transactions on Wireless Communications

Volume

PP

Pagination

1-1

ISSN

1536-1276

eISSN

1558-2248

Publication classification

C1 Refereed article in a scholarly journal

Issue

99

Publisher

Institute of Electrical and Electronics Engineers (IEEE)