講演抄録/キーワード |
講演名 |
2021-10-28 10:30
[ポスター講演]人体遮蔽を考慮したローカル5G周波数帯屋内伝搬特性推定 ○吉田総希・日景 隆・山本 学・大宮 学(北大) |
抄録 |
(和) |
企業や地方自治体等が自らの建物内や特定の敷地内で柔軟に構築できる第5世代移動通信システム(5G)であるローカル5Gの開発実証が行われている.本稿では,室内環境におけるローカル5G周波数帯の伝搬特性に及ぼす人体遮蔽影響について定量的な評価を行う.複数の人体を含む会議室を高精度にモデル化し,FDTD法に基づく大規模な3次元数値解析によって伝搬特性を評価する.会議室内に基地局アンテナを模擬した4.7 GHzの送信アンテナを設置し,会議室全体の電磁界強度分布について,人体の有無に起因する特性の違いを議論する.シミュレーションでは,姿勢変更に対応した複数の人体モデルを配置することにより,実利用環境に近い条件での人体遮蔽あるいは散乱の影響を評価した. |
(英) |
This study focuses on human body shadowing on the propagation characteristics of local-5G frequency bands in indoor environments, since the development and demonstration of the local 5G system, which is a 5G system that various entities such as local companies and local governments can construct flexibly on a spot basis in their own buildings and premises according to the individual needs of the community and industries, has been conducted since last year. We modeled an indoor propagation environment assuming a conference room containing human bodies and evaluated the propagation characteristics through a large-scale 3D numerical analysis based on the FDTD method. The electric field distribution in the conference room environment exited by the 4.7GHz transmitting antenna, which is used as the local-5G frequency, was calculated, and the propagation characteristics with and without the human bodies were compared. Shadowing and scattering effects due to multiple human bodies in standing and sitting postures were evaluated in the simulations. |
キーワード |
(和) |
人体遮蔽 / 伝搬特性 / FDTD法 / ローカル5G周波数帯 / / / / |
(英) |
Human body shadowing / Propagation characteristics / FDTD method / Local-5G frequency band / / / / |
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