A Survey of Scheduling in 5G URLLC and Outlook for Emerging 6G Systems

Md. Emdadul Haque, Faisal Tariq, Muhammad R. A. Khandaker, Kai-Kit Wong, Yangyang Zhang

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)
225 Downloads (Pure)


Future wireless communication is expected to be a paradigm shift from three basic service requirements of 5th Generation (5G) including enhanced Mobile Broadband (eMBB), Ultra Reliable and Low Latency communication (URLLC) and the massive Machine Type Communication (mMTC). Integration of the three heterogeneous services into a single system is a challenging task. The integration includes several design issues including scheduling network resources with various services. Specially, scheduling the URLLC packets with eMBB and mMTC packets need more attention as it is a promising service of 5G and beyond systems. It needs to meet stringent Quality of Service (QoS) requirements and is used in time-critical applications. Thus through understanding of packet scheduling issues in existing system and potential future challenges is necessary. This paper surveys the potential works that addresses the packet scheduling algorithms for 5G and beyond systems in recent years. It provides state of the art review covering three main perspectives such as decentralised, centralised and joint scheduling techniques. The conventional decentralised algorithms are discussed first followed by the centralised algorithms with specific focus on single and multi-connected network perspective. Joint scheduling algorithms are also discussed in details. In order to provide an in-depth understanding of the key scheduling approaches, the performances of some prominent scheduling algorithms are evaluated and analysed. This paper also provides an insight into the potential challenges and future research directions from the scheduling perspective.
Original languageEnglish
Pages (from-to)34372-34396
Number of pages25
JournalIEEE Access
Early online date5 Apr 2023
Publication statusPublished - 2023


  • 5G
  • 5G mobile communication
  • 6G
  • 6G mobile communication
  • Long Term Evolution
  • Resource management
  • Scheduling
  • Scheduling algorithms
  • Ultra reliable low latency communication
  • eMBB
  • joint scheduling
  • mMTC
  • packet scheduling

ASJC Scopus subject areas

  • General Computer Science
  • General Materials Science
  • General Engineering
  • Electrical and Electronic Engineering


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