The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
pandangan teks lengkap
105
Kehilangan laluan dalam jalur frekuensi tinggi melebihi 6GHz ialah ciri penyebaran paling asas dan ketara bagi IMT-2020. Untuk membangunkan dan menilai jalur frekuensi tinggi sedemikian, ITU-R SG5 WP5D baru-baru ini mengeluarkan model saluran yang boleh digunakan sehingga 100GHz. Model saluran termasuk model kehilangan laluan yang digunakan untuk 0.5-100GHz. Model kehilangan laluan digunakan untuk reka bentuk sel dan penilaian teknologi radio, yang merupakan tujuan utama WP5D. Ketepatan ramalan dalam pelbagai lokasi, kedudukan Tx, jalur frekuensi dan parameter lain adalah penting dalam reka bentuk sel. Artikel ini membentangkan ketepatan ramalan model kehilangan laluan UMa yang diperincikan dalam Laporan ITU-R M.2412 untuk IMT-2020. Kami juga mencadangkan UMa_A' sebagai model lanjutan UMa_A. Walaupun UMa_A menggunakan persamaan berbeza pada jalur di bawah dan di atas 6GHz untuk meramalkan kehilangan laluan, UMa_A' meliputi semua jalur dengan menggunakan persamaan UMa_A di bawah 6GHz. Dengan menggunakan model UMa_A', kita boleh meramalkan kehilangan laluan dengan mengambil kira pelbagai parameter (seperti ketinggian antena BS) dalam julat frekuensi yang luas (0.5-100GHz). Ini berguna untuk mempertimbangkan penggunaan antena BS pada pelbagai kedudukan dengan jalur frekuensi yang luas. Kami mengesahkan ketepatan model dengan pengukuran yang meluas dalam jalur frekuensi dari 2 hingga 66GHz, jarak sehingga 1600 m dan persekitaran UMa dengan tiga ketinggian antena Tx. Model sambungan UMa_A' boleh meramalkan kehilangan laluan dengan RMSE rendah kira-kira 7dB pada 2-26.4GHz, yang lebih tepat daripada model UMa_A dan UMa_B. Walaupun kebolehgunaan model UMa_A' pada 66GHz tidak jelas dan memerlukan pengesahan lanjut, keputusan penilaian untuk 66GHz menunjukkan bahawa ketinggian antena boleh menjejaskan ketepatan ramalan pada 66GHz.
Motoharu SASAKI
NTT Corporation
Mitsuki NAKAMURA
NTT Corporation
Nobuaki KUNO
NTT Corporation
Wataru YAMADA
NTT Corporation
Naoki KITA
NTT Corporation
Takeshi ONIZAWA
NTT Corporation
Yasushi TAKATORI
NTT Corporation
Hiroyuki NAKAMURA
NTT Corporation
Minoru INOMATA
NTT DOCOMO, INC.
Koshiro KITAO
NTT DOCOMO, INC.
Tetsuro IMAI
NTT DOCOMO, INC.
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Salinan
Motoharu SASAKI, Mitsuki NAKAMURA, Nobuaki KUNO, Wataru YAMADA, Naoki KITA, Takeshi ONIZAWA, Yasushi TAKATORI, Hiroyuki NAKAMURA, Minoru INOMATA, Koshiro KITAO, Tetsuro IMAI, "Extension of ITU-R Site-General Path Loss Model in Urban Areas Based on Measurements from 2 to 66GHz Bands" in IEICE TRANSACTIONS on Communications,
vol. E104-B, no. 7, pp. 849-857, July 2021, doi: 10.1587/transcom.2020EBP3034.
Abstract: Path loss in high frequency bands above 6GHz is the most fundamental and significant propagation characteristic of IMT-2020. To develop and evaluate such high frequency bands, ITU-R SG5 WP5D recently released channel models applicable up to 100GHz. The channel models include path loss models applicable to 0.5-100GHz. A path loss model is used for cell design and the evaluation of the radio technologies, which is the main purpose of WP5D. Prediction accuracy in various locations, Tx positions, frequency bands, and other parameters are significant in cell design. This article presents the prediction accuracy of UMa path loss models which are detailed in Report ITU-R M.2412 for IMT-2020. We also propose UMa_A' as an extension model of UMa_A. While UMa_A applies different equations to the bands below and above 6GHz to predict path loss, UMa_A' covers all bands by using the equations of UMa_A below 6GHz. By using the UMa_A' model, we can predict path loss by taking various parameters (such as BS antenna height) into account over a wide frequency range (0.5-100GHz). This is useful for considering the deployment of BS antennas at various positions with a wide frequency band. We verify model accuracy by extensive measurements in the frequency bands from 2 to 66GHz, distances up to 1600 m, and an UMa environment with three Tx antenna heights. The UMa_A' extension model can predict path loss with the low RMSE of about 7dB at 2-26.4GHz, which is more accurate than the UMa_A and UMa_B models. Although the applicability of the UMa_A' model at 66GHz is unclear and needs further verification, the evaluation results for 66GHz demonstrate that the antenna height may affect the prediction accuracy at 66GHz.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2020EBP3034/_p
Salinan
@ARTICLE{e104-b_7_849,
author={Motoharu SASAKI, Mitsuki NAKAMURA, Nobuaki KUNO, Wataru YAMADA, Naoki KITA, Takeshi ONIZAWA, Yasushi TAKATORI, Hiroyuki NAKAMURA, Minoru INOMATA, Koshiro KITAO, Tetsuro IMAI, },
journal={IEICE TRANSACTIONS on Communications},
title={Extension of ITU-R Site-General Path Loss Model in Urban Areas Based on Measurements from 2 to 66GHz Bands},
year={2021},
volume={E104-B},
number={7},
pages={849-857},
abstract={Path loss in high frequency bands above 6GHz is the most fundamental and significant propagation characteristic of IMT-2020. To develop and evaluate such high frequency bands, ITU-R SG5 WP5D recently released channel models applicable up to 100GHz. The channel models include path loss models applicable to 0.5-100GHz. A path loss model is used for cell design and the evaluation of the radio technologies, which is the main purpose of WP5D. Prediction accuracy in various locations, Tx positions, frequency bands, and other parameters are significant in cell design. This article presents the prediction accuracy of UMa path loss models which are detailed in Report ITU-R M.2412 for IMT-2020. We also propose UMa_A' as an extension model of UMa_A. While UMa_A applies different equations to the bands below and above 6GHz to predict path loss, UMa_A' covers all bands by using the equations of UMa_A below 6GHz. By using the UMa_A' model, we can predict path loss by taking various parameters (such as BS antenna height) into account over a wide frequency range (0.5-100GHz). This is useful for considering the deployment of BS antennas at various positions with a wide frequency band. We verify model accuracy by extensive measurements in the frequency bands from 2 to 66GHz, distances up to 1600 m, and an UMa environment with three Tx antenna heights. The UMa_A' extension model can predict path loss with the low RMSE of about 7dB at 2-26.4GHz, which is more accurate than the UMa_A and UMa_B models. Although the applicability of the UMa_A' model at 66GHz is unclear and needs further verification, the evaluation results for 66GHz demonstrate that the antenna height may affect the prediction accuracy at 66GHz.},
keywords={},
doi={10.1587/transcom.2020EBP3034},
ISSN={1745-1345},
month={July},}
Salinan
TY - JOUR
TI - Extension of ITU-R Site-General Path Loss Model in Urban Areas Based on Measurements from 2 to 66GHz Bands
T2 - IEICE TRANSACTIONS on Communications
SP - 849
EP - 857
AU - Motoharu SASAKI
AU - Mitsuki NAKAMURA
AU - Nobuaki KUNO
AU - Wataru YAMADA
AU - Naoki KITA
AU - Takeshi ONIZAWA
AU - Yasushi TAKATORI
AU - Hiroyuki NAKAMURA
AU - Minoru INOMATA
AU - Koshiro KITAO
AU - Tetsuro IMAI
PY - 2021
DO - 10.1587/transcom.2020EBP3034
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E104-B
IS - 7
JA - IEICE TRANSACTIONS on Communications
Y1 - July 2021
AB - Path loss in high frequency bands above 6GHz is the most fundamental and significant propagation characteristic of IMT-2020. To develop and evaluate such high frequency bands, ITU-R SG5 WP5D recently released channel models applicable up to 100GHz. The channel models include path loss models applicable to 0.5-100GHz. A path loss model is used for cell design and the evaluation of the radio technologies, which is the main purpose of WP5D. Prediction accuracy in various locations, Tx positions, frequency bands, and other parameters are significant in cell design. This article presents the prediction accuracy of UMa path loss models which are detailed in Report ITU-R M.2412 for IMT-2020. We also propose UMa_A' as an extension model of UMa_A. While UMa_A applies different equations to the bands below and above 6GHz to predict path loss, UMa_A' covers all bands by using the equations of UMa_A below 6GHz. By using the UMa_A' model, we can predict path loss by taking various parameters (such as BS antenna height) into account over a wide frequency range (0.5-100GHz). This is useful for considering the deployment of BS antennas at various positions with a wide frequency band. We verify model accuracy by extensive measurements in the frequency bands from 2 to 66GHz, distances up to 1600 m, and an UMa environment with three Tx antenna heights. The UMa_A' extension model can predict path loss with the low RMSE of about 7dB at 2-26.4GHz, which is more accurate than the UMa_A and UMa_B models. Although the applicability of the UMa_A' model at 66GHz is unclear and needs further verification, the evaluation results for 66GHz demonstrate that the antenna height may affect the prediction accuracy at 66GHz.
ER -