发明名称 |
USER TERMINAL, BASE STATION AND RADIO COMMUNICATION METHOD |
摘要 |
The present invention is designed to carry out uplink transmission adequately even when CA is executed by applying different duplex modes between multiple cells. A user terminal communicates with an FDD cell and a TDD cell that employ carrier aggregation, and has a receiving section that receives DL signals transmitted from each cell, and a feedback control section that allocates and feeds back delivery acknowledgement signals in response to the DL signals in a predetermined UL subframe, and, regardless of which cell is configured as a primary cell, the feedback control section, when transmitting only a delivery acknowledgement signal in response to the DL signal of one cell, transmits the delivery acknowledgement signal from the one cell by using a PUCCH resource that is determined from a downlink control channel resource of the DL signal, and, when transmitting delivery acknowledgement signals in response to the DL signals of both cells, transmits the delivery acknowledgement signals by using a PUCCH resource of one or both of the cells. |
申请公布号 |
US2016242158(A1) |
申请公布日期 |
2016.08.18 |
申请号 |
US201415024896 |
申请日期 |
2014.09.22 |
申请人 |
NTT DOCOMO, INC. |
发明人 |
Takeda Kazuki;Harada Hiroki;Nagata Satoshi;Ishii Hiroyuki |
分类号 |
H04W72/04;H04L1/18;H04L5/00 |
主分类号 |
H04W72/04 |
代理机构 |
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代理人 |
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主权项 |
1. A user terminal that communicates with an FDD cell and a TDD cell employing carrier aggregation, the user terminal comprising:
a receiving section that receives DL signals transmitted from each cell; and a feedback control section that allocates and feeds back delivery acknowledgement signals in response to the DL signals in a predetermined UL sub frame, wherein, regardless of which cell is configured as a primary cell, the feedback control section, when transmitting only a delivery acknowledgement signal in response to the DL signal of one cell, transmits the delivery acknowledgement signal from the one cell by using a PUCCH resource that is determined from a downlink control channel resource of the DL signal, and, when transmitting delivery acknowledgement signals in response to the DL signals of both cells, transmits the delivery acknowledgement signals by using a PUCCH resource of one or both of the cells. |
地址 |
Tokyo JP |