The International Telecommunications Union Radiocommunication Sector (ITU-R) Study Group 3 identified the need for a number of radio channel models in anticipation of the World Radiocommunications Conference in 2019 when the frequency allocation for 5G will be discussed. In response to the call for propagation path loss models, members of the study group carried out measurements in the frequency bands between 0.8 GHz up to 73 GHz in urban low-rise and urban high-rise as well as suburban environments. The data were subsequently merged to generate site general path loss models. The paper presents an overview of the radio channel measurements, the measured environments, the data analysis, and the approach for the derivation of the path loss model adopted in Recommendation ITU-R P.1411-10 (2019-08).
Bibliographical noteFunding Information:
The work of J. Lee and M. D. Kim was supported by Institute for Information & Communications Technology Planning & Evaluation (IITP) grant funded by the Korean government (MIST) [2017‐0‐00066, “Development of time‐space based spectrum engineering technologies for the pre‐emptive using of frequency”]. The channel sounder at Durham University was developed under EPSRC project PATRICIAN EP/I00923X/1, and its frequency range extended under further funding from EPSRC Impact, Acceleration Account, Ofcom, UK, under contract 1362, “Long term measurements campaign and development of model(s) for mm wave bands (30–90 GHz)” and Intel, USA. Data in the 60 GHz band were provided by Intel, USA. Discussions with Correspondence Group 3K‐6 of the ITU working party 3K and in particular Jonas Medbo on the capping method are appreciated. All the data used in the paper are summarized in Table . The data, except 0.8, 2.2, 4.7, 26.4, 37.1, and 66.5 GHz frequency data, are available at https://www.itu.int/md/R15‐WP3K‐C‐0125/en which is an ITU‐R contribution document accessible only, at this time, for those who have an ITU‐R ties account. These data may or may not be publicly available subject to the ITU‐R policy. The measurement data at frequencies 0.8, 2.2, 4.7, 26.4, and 37.1 GHz are not publicly available due to the current data policy of NTT Corporation.
© 2020. The Authors.
Copyright 2020 Elsevier B.V., All rights reserved.
- ITU recommendations
- path loss
- radio propagation
- millimetre wave