Novel Out-of-Band mmWave Layer 2 Protocol for 5G Network-Based Downlink IAB SDR Platform

Randy Verdecia-Peña, Rodolfo Oliveira, José I. Alonso

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this paper, we develop a 3GPP-inspired hardware implementation for the out-of-band Integrated Access and Backhaul (IAB) network, which promises to be a solution to both coverage extension and capacity boosting in 5G and beyond networks. The emulated gNodeB transmits an FR1 5G downlink signal as standardized by the 3GPP, which has been tested by means of commercial equipment. By employing Ettus x310 SDR board, Pasternack's 60 GHz Transmitter (Tx) waveguide module, and MatlabTM software, we design and develop an easy-to-use out-of-band mmWave Layer 2 (D&F) protocol. The proposed protocol decodes an FR1 5G signal as input at 3.5 GHz, which is retransmitted to the UE as an FR2 5G signal. In the Layer 2 protocol, the least square (LS) estimator implemented considers the channel state information reference signal (CSI-RS). We review and evaluate the key performance indicators (KPIs) of the proposed Layer 2 protocol in real non-line-of-sight (NLOS) environments and a comparison between the gNode-to-UE link has been carried out. Our results indicate that the performance of the proposed Layer 2 protocol is similar to the obtained with the Anritsu equipment demonstrating the right functionality of the developed algorithms. Experimental results evidence the superiority of the proposed D&F protocol over the gNodeB-to-UE link (direct link communication).
Original languageEnglish
Title of host publication2023 IEEE 97th Vehicular Technology Conference, VTC 2023-Spring
Subtitle of host publicationProceedings
Place of PublicationMassachusetts
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages7
ISBN (Electronic)979-8-3503-1114-3
ISBN (Print)979-8-3503-1115-0
DOIs
Publication statusPublished - 2023
Event97th IEEE Vehicular Technology Conference, VTC 2023-Spring - Florence, Italy
Duration: 20 Jun 202323 Jun 2023

Publication series

NameIEEE Conference on Vehicular Technology (VTC)
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Volume2023-June
ISSN (Print)1090-3038
ISSN (Electronic)2577-2465

Conference

Conference97th IEEE Vehicular Technology Conference, VTC 2023-Spring
Country/TerritoryItaly
CityFlorence
Period20/06/2323/06/23

Keywords

  • D&F protocol
  • FR2 standard
  • IAB network
  • KPIs
  • Measurements
  • SDR platform

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