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Patent Searching and Data


Title:
端末、無線通信方法、及びシステム
Document Type and Number:
Japanese Patent JP7148607
Kind Code:
B2
Abstract:
In order to appropriately perform communication even when performing a random access procedure with fewer steps than the existing steps, an aspect of a user terminal according to the present disclosure includes a transmitting section that transmits a first UL signal including a preamble used for a random access and a second UL signal including a message, a receiving section that receives a response signal to the first UL signal and the second UL signal after the transmission of the second UL signal, and a control section that retransmits at least one of the first UL signal and the second UL signal based on a transmission failure of at least one of the first UL signal and the second UL signal.

Inventors:
Kazuki Takeda
Shohei Yoshioka
Satoshi Nagata
One rife
Guo Xiaozen
Ko Gyorin
Application Number:
JP2020526829A
Publication Date:
October 05, 2022
Filing Date:
June 28, 2018
Export Citation:
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Assignee:
Ntt docomo, Inc.
International Classes:
H04W74/08; H04W28/04
Domestic Patent References:
JP2018511276A
Foreign References:
WO2018064367A1
WO2018049274A1
Other References:
Samsung,NR 2-step random access procedure[online],3GPP TSG RAN WG1 adhoc_NR_AH_1701 R1-1700892,2017年01月20日,Section2,Retrieved from the Internet: Qualcomm Incorporated,2-step RACH procedure consideration [online],3GPP TSG RAN WG1 adhoc_NR_AH_1701 R1-1700792,2017年01月20日,Section2,Retrieved from the Internet: CATT,Consideration on 2-step RA[online],3GPP TSG RAN WG2 adhoc_2017_01_NR R2-1700205,Internet,2017年01月19日
Sony,2-step RACH to 4-step RACH fallback[online],3GPP TSG RAN WG2 adhoc_2017_01_NR R2-1700137,Internet,2017年01月19日
Attorney, Agent or Firm:
Hiroyoshi Aoki
Masayuki Amada
Yoshitaka Moriya