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1. (WO2018084207) USER TERMINAL AND WIRELESS COMMUNICATION METHOD
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.: WO/2018/084207 International Application No.: PCT/JP2017/039622
Publication Date: 11.05.2018 International Filing Date: 01.11.2017
IPC:
H04W 28/04 (2009.01) ,H04W 16/28 (2009.01) ,H04W 52/06 (2009.01) ,H04W 74/08 (2009.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
W
WIRELESS COMMUNICATION NETWORKS
28
Network traffic or resource management
02
Traffic management, e.g. flow control or congestion control
04
Error control
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
W
WIRELESS COMMUNICATION NETWORKS
16
Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cell structures
24
Cell structures
28
using beam steering
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
W
WIRELESS COMMUNICATION NETWORKS
52
Power management, e.g. TPC [Transmission Power Control], power saving or power classes
04
TPC [Transmission power control]
06
TPC algorithms
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
W
WIRELESS COMMUNICATION NETWORKS
74
Wireless channel access, e.g. scheduled or random access
08
Non-scheduled access, e.g. random access, ALOHA or CSMA [Carrier Sense Multiple Access]
Applicants:
株式会社NTTドコモ NTT DOCOMO, INC. [JP/JP]; 東京都千代田区永田町二丁目11番1号 11-1, Nagatacho 2-chome, Chiyoda-ku, Tokyo 1006150, JP
Inventors:
武田 和晃 TAKEDA, Kazuaki; JP
大久保 尚人 OOKUBO, Naoto; JP
永田 聡 NAGATA, Satoshi; JP
Agent:
青木 宏義 AOKI, Hiroyoshi; JP
天田 昌行 AMADA, Masayuki; JP
守屋 芳隆 MORIYA, Yoshitaka; JP
Priority Data:
2016-21556802.11.2016JP
Title (EN) USER TERMINAL AND WIRELESS COMMUNICATION METHOD
(FR) TERMINAL UTILISATEUR ET PROCÉDÉ DE COMMUNICATION SANS FIL
(JA) ユーザ端末及び無線通信方法
Abstract:
(EN) The purpose of the present invention is to appropriately perform a random access procedure in communication which uses beam forming. This user terminal is characterized by being provided with: a reception unit which receives a DL signal transmitted from a wireless base station; a transmission unit which uses a prescribed random access preamble (PRACH) resource selected on the basis of the DL signal to transmit a PRACH; and a control unit which controls retransmission of the PRACH using a PRACH resource different to the prescribed PRACH resource, if the reception of a response signal to the PRACH transmission is unsuccessful.
(FR) Le but de la présente invention est d'effectuer convenablement un procédé d'accès aléatoire dans une communication qui utilise une formation de faisceau. Ce terminal utilisateur est caractérisé en ce qu'il est pourvu : d'une unité de réception qui reçoit un signal DL émis par une station de base sans fil ; d'une unité de transmission qui utilise une ressource de préambule d'accès aléatoire prescrit (PRACH) sélectionnée sur la base du signal DL pour transmettre un PRACH ; d'une unité de commande qui commande la retransmission du PRACH à l'aide d'une ressource PRACH différente de la ressource PRACH prescrite, si la réception d'un signal de réponse à la transmission PRACH a échoué.
(JA) ビームフォーミングを用いる通信において、ランダムアクセス手順を適切に行うこと。本発明のユーザ端末は、無線基地局から送信されるDL信号を受信する受信部と、前記DL信号に基づいて選択した所定のランダムアクセスプリアンブル(PRACH)リソースを用いてPRACHを送信する送信部と、前記PRACH送信に対する応答信号の受信が成功しなかった場合、前記所定のPRACHリソースと異なるPRACHリソースを用いてPRACHの再送を制御する制御部と、を有することを特徴とする。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)