Statistical Delay and Error-Rate Bounded QoS Provisioning over mmWave Cell-Free M-MIMO and FBC-HARQ-IR Based 6G Wireless Networks

Xi Zhang, Jingqing Wang, H. Vincent Poor

Research output: Contribution to journalArticlepeer-review

Abstract

As a new and dominating 6G mobile-networks' service class for time-sensitive traffics, massive ultra-reliable and low latency communications (mURLLC) has received tremendous attention. One of key 6G enabling-techniques for achieving mURLLC lies in how to efficiently support statistical delay and error-rate bounded quality-of-services (QoS) provisioning for real-time data-transmissions over time-varying wireless networks. Towards this end, several emerging wireless techniques, including finite blocklength coding (FBC), hybrid automatic repeat request with incremental redundancy (HARQ-IR) protocol, millimeter wave (mmWave), cell-free (CF) massive multiple-input multiple-output (m-MIMO), etc., have been shown to be 6G promising enablers to significantly improve various QoS performances. However, integrating these techniques with the statistical delay and error-rate bounded QoS provisioning theory for mURLLC has imposed many new difficulties not encountered before. To overcome these challenges, in this paper we propose the statistical delay-and-error-rate-bounded QoS provisioning system architecture over mmWave user-centric CF m-MIMO and FBC-HARQ-IR based 6G wireless networks. First, we establish the comprehensive system models by accurately characterizing the integrations of above-described 6G promising techniques with statistical QoS provisioning theory. Then, we integrate FBC with HARQ-IR protocol to derive the channel capacity as a function of error probability. Finally, we obtain the closed-form expressions for effective capacities under our proposed schemes. We also conduct a set of simulations to validate and evaluate our proposed FBC-HARQ-IR based mmWave user-centric CF m-MIMO schemes.

Original languageEnglish (US)
Article number9130689
Pages (from-to)1661-1677
Number of pages17
JournalIEEE Journal on Selected Areas in Communications
Volume38
Issue number8
DOIs
StatePublished - Aug 2020

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Keywords

  • 6G mobile wireless networks
  • FBC-HARQ-IR
  • Statistical delay and error-rate bounded QoS
  • effective capacity
  • mURLLC
  • mmWave user-centric CF m-MIMO

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