Loading patent…
AssigneeNtt Docomo, Inc.
InventorsHiroki HARADA, Satoshi NAGATA, Jing WANG, Liu LIU, Huiling JIANG
Estimating the term…
The present invention is designed to optimize the RRM measurements in a carrier where an LBT function is applied. A radio base station executes LBT (Listen Before Talk) in an unlicensed carrier, acquires an LBT result, determines the timing to measure a DRS (Discovery Reference Signal) that is transmitted in the unlicensed carrier, and transmits the LBT result and the measurement timing to a user terminal, and the user terminal receives the LBT result and the DRS measurement timing from the radio base station, and detects the unlicensed carrier by measuring the DRS that is transmitted in the unlicensed carrier based on the LBT result, based on the LBT result and the measurement timing.
A radio base station that allows a user terminal, which uses a first carrier as a primary cell, to detect a second carrier, where an LBT (Listen Before Talk) function is applied, as a secondary cell, the radio base station comprising:
A user terminal that uses a first carrier as a primary cell, and that detects a second carrier, where an LBT function is applied, as a secondary cell, the user terminal comprising:
A radio communication method in which a radio base station allows a user terminal, which uses a first carrier as a primary cell, to detect a second carrier, where an LBT function is applied, as a secondary cell, the radio communication method comprising the steps of:
Dependencies are inferred from the claim text.