基地局装置および端末装置

Japanese Patent JP6594320

B2

There has been a problem that a time period between transmission of a synchronization signal and the next transmission thereof may become longer depending on a usage state of an unlicensed band and a terminal apparatus requires a long time to measure receive power of signals from a plurality of base station apparatuses that perform communication in the unlicensed band. A base station apparatus that communicates with a terminal apparatus in a second frequency band different from a first frequency band that is able to be used exclusively includes: a DL signal generation unit that generates a signal to be transmitted to the terminal apparatus; a radio transmission unit that transmits the signal; and a connected terminal management unit that receives information about a plurality of subframes in which a signal is able to be transmitted to the terminal apparatus from another base station apparatus that communicates with the terminal apparatus in the first frequency band. The DL signal generation unit generates a subframe constituted by a synchronization signal and a reference signal, and the radio transmission unit transmits the signal with at least one of subframes included in the information about the plurality of subframes.

WO/2024/063460	METHOD FOR TIME ALIGNMENT IN WIRELESS COMMUNICATION SYSTEM, AND DEVICE THEREFOR
WO/2021/203251	METHOD FOR CONFIGURING MULTIPLE CARRIERS, TERMINAL DEVICE, AND NETWORK DEVICE
JP3231904	CHANNEL ASSIGNMENT SYSTEM

Jungo Goto
Osamu Nakamura
Hiromichi Tomeba
Shiro Wakahara
Yasuhiro Hamaguchi

JP2016547372A

October 23, 2019

August 28, 2015

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Sharp Corporation

H04W72/04; H04W16/14; H04W24/10; H04W56/00

JP2014500685A

WO2013161135A1
WO2013065837A1

LG Electronics,Consideration on LTE operation in unlicensed spectrum[online], 3GPP workshop 2014-06-13_LTE-U RWS-140031,インターネット,2014年 6月 5日,Slides 1-13

Takeo Fukuchi
Yoichi Shirakawa

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