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Patent Searching and Data


Title:
端末、無線通信システム及び通信方法
Document Type and Number:
Japanese Patent JP6967607
Kind Code:
B2
Abstract:
A user apparatus that performs beamforming-applied communications with a base station apparatus is provided. The user apparatus includes a reception unit configured to receive a beam transmitted from the base station apparatus, a control unit configured to perform control related to recovery of connection to the base station apparatus in a case where the reception unit fails to receive the beam, and a transmission unit configured to transmit a random access preamble or an uplink control signal based on the control related to recovery of connection.

Inventors:
Hideaki Takahashi
Toru Uchino
Application Number:
JP2019557133A
Publication Date:
November 17, 2021
Filing Date:
November 14, 2018
Export Citation:
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Assignee:
Ntt docomo, Inc.
International Classes:
H04W76/19; H04B7/06; H04W16/28; H04W56/00; H04W74/08
Foreign References:
US20160353510
Other References:
Huawei, HiSilicon,"Procedure details for beam failure recovery",3GPP TSG-RAN WG1 NR_AH_1706 R1-1709930,[online],2017年06月17日,pages 1-5,https://www.3gpp.org/ftp/tsg_ran/WG1_RL1/TSGR1_AH/NR_AH_1706/Docs/R1-1709930.zip,[検索日 2021.04.16]
Huawei, HiSilicon,"RAN2 aspects of DL beam management",3GPP TSG-RAN WG2 Meeting #99bis R2-1710562,[online],2017年09月29日,pages 1-4,https://www.3gpp.org/ftp/tsg_ran/WG2_RL2/TSGR2_99bis/Docs/R2-1710562.zip,[検索日 2021.04.16]
MediaTek Inc.,"Beam Management and Beam Recovery in MAC",3GPP TSG-RAN WG2 Meeting #100 R2-1712871,[online],2017年11月17日,pages 1-4,https://www.3gpp.org/ftp/tsg_ran/WG2_RL2/TSGR2_100/Docs/R2-1712871.zip,[検索日 2021.04.16]
NTT DOCOMO, INC. ,"Discussion on Beam failure recovery",3GPP TSG-RAN WG2 2018_01_NR R2-1801404,[online],2018年01月12日,pages 1-2,https://www.3gpp.org/ftp/tsg_ran/WG2_RL2/TSGR2_AHs/2018_01_NR/Docs/R2-1801404.zip,[検索日 2021.04.16] 本願の優先日の後に公開された文献
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Ryuji Ishihara