著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) Yuqiang Heng and Jeffrey G. Andrews and Jianhua Mo and Vutha Va and Anum Ali and Boon Loong Ng and Jianzhong Charlie Zhang,Six Key Challenges for Beam Management in 5.5G and 6G Systems,IEEE Communications Magazine,0163-6804,Institute of Electrical and Electronics Engineers (IEEE),2021-07,59,7,74-79,https://cir.nii.ac.jp/crid/1360298342473840896,https://doi.org/10.1109/mcom.001.2001184