ISAC-Enabled V2I Networks Based on 5G NR: How Much Can the Overhead Be Reduced?

Yunxin LI, Fan LIU, Zhen DU, Weijie YUAN, Christos MASOUROS

Research output: Book Chapters | Papers in Conference ProceedingsConference paper (refereed)Researchpeer-review

5 Citations (Scopus)

Abstract

The emergence of the fifth-generation (5G) New Radio (NR) brings additional possibilities to vehicle-to-everything (V2X) network with improved quality of services. In order to obtain accurate channel state information (CSI) in high-mobility V2X networks, pilot signals and frequent handover between vehicles and infrastructures are required to establish and maintain the communication link, which increases the overheads and reduces the communication throughput. To address this issue, integrated sensing and communications (ISAC) was employed at the base station (BS) in the vehicle-to-infrastructure (V2I) network to reduce a certain amount of overheads, thus improve the spectral efficiency. Nevertheless, the exact amount of overheads reduction remains unclear, particularly for practical NR based V2X networks. In this paper, we study a link-level NR based V2I system employing ISAC signaling to facilitate the communication beam management, where the Extended Kalman filtering (EKF) algorithm is performed to realize the functions of tracking and predicting the motion of the vehicle. We provide detailed analysis on the overheads reduction with the aid of ISAC, and show that up to 43.24% overheads can be reduced under assigned NR frame structure. In addition, numerical results are provided to validate the improved performance on the beam tracking and communication throughput.

Original languageEnglish
Title of host publication2023 IEEE International Conference on Communications Workshops: Sustainable Communications for Renaissance, ICC Workshops 2023
PublisherIEEE
Pages691-696
Number of pages6
ISBN (Electronic)9798350333077
ISBN (Print)9798350333084
DOIs
Publication statusPublished - 2023
Externally publishedYes
Event2023 IEEE International Conference on Communications Workshops, ICC Workshops 2023 - Rome, Italy
Duration: 28 May 20231 Jun 2023

Conference

Conference2023 IEEE International Conference on Communications Workshops, ICC Workshops 2023
Country/TerritoryItaly
CityRome
Period28/05/231/06/23

Bibliographical note

Publisher Copyright:
© 2023 IEEE.

Keywords

  • 5G NR
  • beam tracking
  • EKF
  • ISAC
  • V2I

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