URLLC Mode Optimal Resource Allocation to Support HARQ in 5G Wireless Networks

Hyeondeok Jang, Junsung Kim, Wonsuk Yoo, Jong Moon Chung

Research output: Contribution to journalArticlepeer-review

Abstract

Ultra Reliable Low Latency Communication (URLLC) mode is a promising 5G technology for various real-time applications, such as, autonomous vehicles, augmented reality, and factory automation. Several papers on URLLC exist, however, most papers only focus on ways to achieve high reliability, and lack mathematical analysis of delay related to packet errors, retransmissions, and bandwidth. In this paper, a M/G/1 queuing model is applied to analyze the erroneous transmission recovery delay of URLLC multi-user services, and using this model the minimum required bandwidth is derived and applied into an adaptive control scheme. The proposed Pollaczek-Khinchine (P-K) formula based quadratic optimization (PFQO) scheme optimizes the bandwidth requirement by controlling the maximum retransmission parameter of the hybrid automatic repeated request (HARQ) mechanism in URLLC. Simulation results show the bandwidth saving effect of the proposed PFQO scheme based on various signal to interference plus noise ratios (SINRs) and packet length distributions.

Original languageEnglish
Article number9136687
Pages (from-to)126797-126804
Number of pages8
JournalIEEE Access
Volume8
DOIs
Publication statusPublished - 2020

Bibliographical note

Funding Information:
This work was supported by the Institute for Information and Communications Technology Promotion funded by the Korean Government (The Development of Adaptive Network Technology With Multi-Media Multi-Path) under Grant 2017-0-00282.

All Science Journal Classification (ASJC) codes

  • Computer Science(all)
  • Materials Science(all)
  • Engineering(all)

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