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1. US20170156075 - Radio base station, user terminal and radio communication system

Office United States of America
Application Number 15325615
Application Date 24.06.2015
Publication Number 20170156075
Publication Date 01.06.2017
Grant Number 10154430
Grant Date 11.12.2018
Publication Kind B2
IPC
H04W 16/14
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
16Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cell structures
14Spectrum sharing arrangements
H04W 24/10
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
24Supervisory, monitoring or testing arrangements
10Scheduling measurement reports
H04W 36/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
36Handoff or reselecting arrangements
H04W 48/16
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
48Access restriction; Network selection; Access point selection
16Discovering; Processing access restriction or access information
H04W 72/14
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
72Local resource management, e.g. selection or allocation of wireless resources or wireless traffic scheduling
12Wireless traffic scheduling
14using a grant channel
H04W 74/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
74Wireless channel access, e.g. scheduled or random access
CPC
H04B 17/318
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
17Monitoring; Testing
30of propagation channels
309Measuring or estimating channel quality parameters
318Received signal strength
H04W 16/14
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
16Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
14Spectrum sharing arrangements ; between different networks
H04W 24/10
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
24Supervisory, monitoring or testing arrangements
10Scheduling measurement reports ; ; Arrangements for measurement reports
H04W 36/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
36Hand-off or reselection arrangements
H04W 36/0069
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
36Hand-off or reselection arrangements
0005Control or signalling for completing the hand-off
0055Transmission and use of information for re-establishing the radio link
0069in case of dual connectivity, e.g. CoMP, decoupled uplink/downlink or carrier aggregation
H04W 48/16
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
48Access restriction
16Discovering, processing access restriction or access information
Applicants NTT DOCOMO, INC.
Inventors Hiroki Harada
Kazuki Takeda
Satoshi Nagata
Mingju Li
Jing Wang
Yu Jiang
Liu Liu
Huiling Jiang
Agents Osha Liang LLP
Priority Data 2014-143510 11.07.2014 JP
Title
(EN) Radio base station, user terminal and radio communication system
Abstract
(EN)

In order to prevent, in an LAA system supporting LBT, reduction in resource usage of the system, the present invention provides a radio base station that communicates with a user terminal capable of using a licensed band and unlicensed band. The radio base station comprises: an obtaining section that obtains information about an available time resource amount that is determined based on a result of LBT (Listen Before Talk) in the unlicensed band; and a control section that controls communication with the user terminal in the unlicensed band based on the information about the available time resource amount.