Scheduling Optimization for Mixed-type Devices of IoT in Massive MIMO Systems with Spatio-Temporal Traffic

Qi Zhang, Howard H. Yang, Tony Q.S. Quek, Shi Jin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, we develop a framework for the analysis of massive multiple-input multiple-output (MIMO) systems where various types of devices with different configurations and requirements co-exist, taking into account both the spatial and temporal random traffic. A closed-form approximation of the spatial mean packet throughput which denotes the average number of packets that are successfully transmitted at any unit time slot and area is derived by using tools from stochastic geometry and queuing theory. Based on it, we investigate the optimal scheduling number for each type of device that maximizes the spatial mean packet throughput while meeting devices' delay demands. It is found that when the BS antenna number (M) goes to infinity, the BS should schedule all devices under its coverage, regardless of devices' variations. However, when M is finite, the BS should have a bias on scheduling devices with heavier arrival traffic and lower decoding threshold. On the basis of this, if the delay constraint of one device becomes stricter, the BS will allocate extra shares of the scheduling quantity to it, and this allocation acts more evidently with small-scale BS antennas.

Original languageEnglish
Title of host publication12th International Conference on Wireless Communications and Signal Processing, WCSP 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages74-79
Number of pages6
ISBN (Electronic)9781728172361
DOIs
Publication statusPublished - 2020 Oct 21
Event12th International Conference on Wireless Communications and Signal Processing, WCSP 2020 - Nanjing, China
Duration: 2020 Oct 212020 Oct 23

Publication series

Name12th International Conference on Wireless Communications and Signal Processing, WCSP 2020

Conference

Conference12th International Conference on Wireless Communications and Signal Processing, WCSP 2020
Country/TerritoryChina
CityNanjing
Period20-10-2120-10-23

All Science Journal Classification (ASJC) codes

  • Artificial Intelligence
  • Computer Networks and Communications
  • Signal Processing
  • Information Systems and Management
  • Safety, Risk, Reliability and Quality

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