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1. (WO2017110962) USER TERMINAL, WIRELESS BASE STATION, AND WIRELESS COMMUNICATION METHOD
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2017/110962 International Application No.: PCT/JP2016/088276
Publication Date: 29.06.2017 International Filing Date: 22.12.2016
IPC:
H04W 72/04 (2009.01) ,H04W 56/00 (2009.01) ,H04W 74/08 (2009.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
W
WIRELESS COMMUNICATION NETWORKS
72
Local resource management, e.g. selection or allocation of wireless resources or wireless traffic scheduling
04
Wireless resource allocation
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
W
WIRELESS COMMUNICATION NETWORKS
56
Synchronisation arrangements
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 一樹 TAKEDA, Kazuki; JP
原田 浩樹 HARADA, Hiroki; 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:
2015-25528325.12.2015JP
Title (EN) USER TERMINAL, WIRELESS BASE STATION, AND WIRELESS COMMUNICATION METHOD
(FR) TERMINAL UTILISATEUR, STATION DE BASE SANS FIL ET PROCÉDÉ DE COMMUNICATION SANS FIL
(JA) ユーザ端末、無線基地局及び無線通信方法
Abstract:
(EN) The present invention enables timing control to be performed appropriately even in a case where short TTIs are used. The present invention provides a user terminal that performs communication by using short TTIs having transmission time interval (TTI) lengths of less than 1 ms. The user terminal is provided with a reception unit that receives DL signals transmitted from a wireless base station, and a control unit that controls the transmission of UL signals on the basis of the DL signals. The control unit controls random access operations on the basis of the short TTIs and/or normal TTIs having TTI lengths of 1 ms.
(FR) La présente invention concerne une commande de temporisation exécutée de façon appropriée même dans le cas où des TTI courtes sont utilisées. La présente invention concerne un terminal utilisateur réalisant une communication à l'aide de TTI courts présentant des longueurs d'intervalle de synchronisation de transmission (TTI) inférieures à 1 ms. Le terminal utilisateur comprend une unité de réception qui reçoit des signaux DL transmis depuis une station de base sans fil et une unité de commande qui commande la transmission de signaux UL en fonction des signaux DL. L'unité de commande commande des opérations d'accès aléatoire conformément aux TTI courts et/ou à des TTI normaux présentant des longueurs de TTI de 1 ms.
(JA) 短縮TTIを利用する場合であっても、タイミング制御を適切に行うこと。送信時間間隔(TTI:Transmission Time Interval)長が1msより短い短縮TTIを利用して通信を行うユーザ端末であって、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UL信号の送信を制御する制御部と、を有し、前記制御部は、ランダムアクセス動作を短縮TTI及び/又はTTI長が1msである通常TTIに基づいて制御する。
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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, 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 Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (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)
Also published as:
CN108432315EP3397012