MinFAST: Minimum Span Frequency Assignment Technique for Integrated Access and Backhaul Networks

Ki Hun Lee, Hyang Won Lee, Howon Lee, Seong Ho Chae, Yongsin Kim, Bang Chul Jung

Research output: Contribution to journalArticlepeer-review

Abstract

We propose novel centralized minimum span frequency assignment (MS-FA) techniques allowing partially overlapped channels (POCs) to improve cost and spectral efficiency for integrated access and backhaul (IAB) networks. We first revisit the conventional MS-FA problem (MS-FAP) that minimizes the required bandwidth for given quality-of-service (QoS) requirements, and then design a novel integer linear programming (ILP)-based optimal MS-FA technique with POCs. However, the optimal technique may not be feasible for large-scale IAB networks due to its NP-hardness. Hence, we propose a novel low-complexity MS-FA algorithm that achieves a near-optimal performance while significantly reducing the computational complexity. To the best of our knowledge, no MS-FA technique exists to consider both POCs and the physical interference model in the literature. Simulation results show that the spectral efficiency becomes significantly improved by reducing the required bandwidth in practical IAB networks.

Original languageEnglish
Pages (from-to)8222-8227
Number of pages6
JournalIEEE Transactions on Vehicular Technology
Volume72
Issue number6
DOIs
Publication statusPublished - 2023 Jun 1
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 1967-2012 IEEE.

Keywords

  • Integrated access and backhaul
  • millimeter wave
  • minimum span frequency assignment problem
  • partially overlapped channel
  • physical interference model

ASJC Scopus subject areas

  • Automotive Engineering
  • Aerospace Engineering
  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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