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1. EP3419359 - USER TERMINAL, WIRELESS BASE STATION, AND WIRELESS COMMUNICATION METHOD

Office European Patent Office
Application Number 17753286
Application Date 16.02.2017
Publication Number 3419359
Publication Date 26.12.2018
Publication Kind A4
IPC
H04W 72/04
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
72Local resource management, e.g. selection or allocation of wireless resources or wireless traffic scheduling
04Wireless resource allocation
H04L 27/26
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
26Systems using multi-frequency codes
H04W 28/04
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
28Network traffic or resource management
02Traffic management, e.g. flow control or congestion control
04Error control
CPC
H04W 72/0446
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
72Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
04Wireless resource allocation
044where an allocation plan is defined based on the type of the allocated resource
0446the resource being a slot, sub-slot or frame
H04L 27/26
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
26Systems using multi-frequency codes
H04W 28/04
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
28Network traffic or resource management
02Traffic management, e.g. flow control or congestion control
04Error control
H04L 1/1861
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1Arrangements for detecting or preventing errors in the information received
12by using return channel
16in which the return channel carries supervisory signals, e.g. repetition request signals
18Automatic repetition systems, e.g. van Duuren system ; ; ARQ protocols
1829Arrangements specific to the receiver end
1861Physical mapping arrangements
H04W 72/042
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
72Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
04Wireless resource allocation
0406involving control information exchange between nodes
042in downlink direction of a wireless link, i.e. towards terminal
H04W 72/12
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
72Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
12Dynamic; Wireless traffic scheduling ; ; Dynamically scheduled allocation on shared channel
Applicants NTT DOCOMO INC
Inventors TAKEDA KAZUKI
NAGATA SATOSHI
Designated States
Priority Data 2016029885 19.02.2016 JP
Title
(DE) BENUTZERENDGERÄT, DRAHTLOSE BASISSTATION UND DRAHTLOSKOMMUNIKATIONSVERFAHREN
(EN) USER TERMINAL, WIRELESS BASE STATION, AND WIRELESS COMMUNICATION METHOD
(FR) TERMINAL UTILISATEUR, STATION DE BASE SANS FIL, ET PROCÉDÉ DE COMMUNICATION SANS FIL
Abstract
(EN)
In order that a user terminal properly performs communication even when a shortened TTI is applied, a user terminal that performs communication in a second Transmission Time Interval (TTI) having a shorter TTI length than a first TTI, is provided with a reception unit that receives, from a radio base station, first downlink control information transmitted for each first TTI, and second downlink control information transmitted in the second TTI, and a control unit that controls UL transmission in the second TTI based on the first control information and the second control information, in which the control unit controls the UL transmission using the first downlink control information that is received before a predetermined period from the second TTI in which the UL transmission is performed, and the second downlink control information that is included in the first TTI in which the first downlink control information is transmitted.

(FR)
Selon la présente invention, une communication est réalisée de manière appropriée même quand un intervalle de temps de transmission (TTI) raccourci est appliqué. Ce terminal utilisateur réalise la communication en utilisant un second TTI ayant une longueur de TTI plus courte qu'un premier TTI, et a : une unité de réception qui reçoit des premières informations de commande de liaison descendante transmises par une station de base sans fil dans chaque premier TTI, et des secondes informations de commande de liaison descendante transmises au second TTI; et une unité de commande qui commande la transmission montante au second TTI sur la base des premières informations de commande et des secondes informations de commande. L'unité de commande ordonne la transmission montante en utilisant les premières informations de commande de liaison descendante reçues dans une période prescrite avant le second TTI auquel est exécutée la transmission montante, et les secondes informations de commande de liaison descendante comprises dans le premier TTI auquel sont transmises les premières informations de commande de liaison descendante.