| Presentation | 2023-03-02 A Study on Received Power Improvement in Indoor NLoS Region for 28-GHz Band Wireless System Using RIS Jun Shirasaka, Seiichi Sampei, Takumi Takahashi, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Local 5G is a fifth-generation (5G) mobile network that can be built and operated by companies or local governments according to the needs of specific areas, such as factories and logistics warehouses. The 28 GHz band (millimeter wave band), which is expected to be used for local 5G, has strong directivity and significant attenuation due to diffraction, scattering, and transmission, making communication difficult in non-line-of-sight (NLoS) environments. When using millimeter waves in indoor environments, the number of structures can easily result in NLoS environments, and the position of NLoS environments can change due to the movement of objects such as vehicles, requiring means to cope with dynamically changing NLoS environments. In this article, we propose a system that implements reflection control by RIS, converts dynamically changing NLoS areas into line-of-sight (LoS) areas by controlling the propagation path structure using RIS. By using computer simulation based on the ray-tracing method, we confirmed that the received power in the NLoS area can be significantly improved by applying the proposed method. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | RIS / reflector / coverage / mmWave / 28 GHz band / local 5G / LoS / NLoS |
| Paper # | RCS2022-276 |
| Date of Issue | 2023-02-22 (RCS) |
| Conference Information | |
| Committee | RCS / SR / SRW |
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| Conference Date | 2023/3/1(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tokyo Institute of Technology, and Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Mobile Communication Workshop |
| Chair | Kenichi Higuchi(Tokyo Univ. of Science) / Suguru Kameda(Hiroshima Univ.) / Hanako Noda(Anritsu) |
| Vice Chair | Tomoya Tandai(Toshiba) / Fumihide Kojima(NICT) / Osamu Muta(Kyushu Univ.) / Osamu Takyu(Shinshu Univ.) / Kentaro Ishidu(NICT) / Kazuto Yano(ATR) / Keiichi Mizutani(Kyoto Univ.) / Kentaro Saito(Tokyo Denki Univ.) / Hirokazu Sawada(NICT) |
| Secretary | Tomoya Tandai(Panasonic) / Fumihide Kojima(Univ. of Electro-Comm) / Osamu Muta(Sharp) / Osamu Takyu(Mie Univ.) / Kentaro Ishidu(Tokai Univ.) / Kazuto Yano(NTT) / Keiichi Mizutani(KUT) / Kentaro Saito(NIigata Univ.) / Hirokazu Sawada |
| Assistant | Manabu Sakai(Mitsubishi Electric) / Masashi Iwabuchi(NTT) / Issei Kanno(KDDI Research) / Yuyuan Chang(Tokyo Inst. of Tech) / Kazuki Maruta(Tokyo Univ. of Science) / Mai Ohta(NEC) / WANG Xiaoyan(Ibaraki Univ.) / Akemi Tanaka(MathWorks) / Katsuya Suto(Univ. of Electro-Comm) / Maki Arai(Nihon Univ.) / Yuichi Masuda(Univ. of Tokyo) |
| Paper Information | |
| Registration To | Technical Committee on Radio Communication Systems / Technical Committee on Smart Radio / Technical Committee on Short Range Wireless Communications |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study on Received Power Improvement in Indoor NLoS Region for 28-GHz Band Wireless System Using RIS |
| Sub Title (in English) | |
| Keyword(1) | RIS |
| Keyword(2) | reflector |
| Keyword(3) | coverage |
| Keyword(4) | mmWave |
| Keyword(5) | 28 GHz band |
| Keyword(6) | local 5G |
| Keyword(7) | LoS |
| Keyword(8) | NLoS |
| 1st Author's Name | Jun Shirasaka |
| 1st Author's Affiliation | Osaka University(Osaka Univ.) |
| 2nd Author's Name | Seiichi Sampei |
| 2nd Author's Affiliation | Osaka University(Osaka Univ.) |
| 3rd Author's Name | Takumi Takahashi |
| 3rd Author's Affiliation | Osaka University(Osaka Univ.) |
| Date | 2023-03-02 |
| Paper # | RCS2022-276 |
| Volume (vol) | vol.122 |
| Number (no) | RCS-399 |
| Page | pp.pp.167-172(RCS), |
| #Pages | 6 |
| Date of Issue | 2023-02-22 (RCS) |