User terminal, radio base station and radio communication method

• US 10,425,925 B2
• Filed: 03/31/2016
• Issued: 09/24/2019
• Est. Priority Date: 04/02/2015
• Status: Active Grant

• Current Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Original Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Inventors: Takeda, Kazuki, Uchino, Tooru, Nagata, Satoshi
• Primary Examiner(s): Kassim, Khaled M
• Application Number:
  US15/563,701
• Publication Number:
  US 20180070352A1
• Time in Patent Office: 1,272 Days
• CPC Class Codes: H04L 1/1671 the supervisory signal being transmitted together with control information
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 88/02 Terminal devices
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

The present invention is designed so that UL transmission can be made adequately even when transmission of uplink control information using secondary cells (SCells) is made configurable. A user terminal communicates with a radio base station by using carrier aggregation, and has a generating section that generates uplink control information based on a DL signal transmitted from the radio base station, and a control section that controls transmission of the uplink control information, and the control section controls the transmission of the uplink control information by applying simultaneous transmission of an uplink control channel and an uplink shared channel to each of a plurality of cell groups, each including at least one component carrier (CC).

Claims

1. A user terminal communicating with a radio base station by using one or more component carriers (CCs), the user terminal comprising:

a processor coupled to a memory, that wherein the processor generates uplink control information corresponding to a DL signal transmitted from the radio base station,

wherein the processor controls transmission of the uplink control information,

wherein, when the user terminal is configured with a first cell group having one or more CCs including a primary cell and a second cell group having one or more CCs including a secondary cell, the processor controls the transmission of the uplink control information per cell group,

when PUCCH and PUSCH simultaneous transmission is applied to the primary cell of the first cell group and to the secondary cell of the second cell group, the uplink control information in the second cell group includes HARQ-ACK and periodic CSI, and

when PUSCH transmission is not present in the secondary cell to which the PUCCH and PUSCH simultaneous transmission is applied, the HARQ-ACK is transmitted on PUCCH of the secondary cell and the periodic CSI is transmitted on PUSCH of another secondary cell of the second cell group.

4. The user terminal according to claim 1, wherein the uplink control information is allocated, per cell group, to a predetermined number of or fewer channels.

2. A radio base station communicating with a user terminal by using one or more component carriers (CCs), the radio base station comprising:

a transmitter that transmits a DL signal;

a receiver that receives uplink control information transmitted from the user terminal,

wherein, when a first cell group having one or more CCs including a primary cell and a second cell group having one or more CCs including a secondary cell are configured, the receiver receives the uplink control information per cell group,

when PUCCH and PUSCH simultaneous transmission is applied to the primary cell of the first cell group and to the secondary cell of the second cell group, the uplink control information in the second cell group includes HARQ-ACK and periodic CSI, and

when PUSCH transmission is not present in the secondary cell to which the PUCCH and PUSCH simultaneous transmission is applied, the HARQ-ACK is received on PUCCH of the secondary cell and the periodic CSI is received on PUSCH of another secondary cell of the second cell group.

3. A radio communication method for a user terminal communicating with a radio base station by using one or more component carriers (CCs), the radio communication method comprising:

generating uplink control information corresponding to a DL signal transmitted from the radio base station; and

controlling transmission of the uplink control information,

wherein, when the user terminal is configured with a first cell group having one or more CCs including a primary cell and a second cell group having one or more CCs including a secondary cell, the user terminal controls the transmission of the uplink control information per cell group,

when PUCCH and PUSCH simultaneous transmission is applied to the primary cell of the first cell group and to the secondary cell of the second cell group, the uplink control information in the second cell group includes HARQ-ACK and periodic CSI, and

when PUSCH transmission is not present in the secondary cell to which the PUCCH and PUSCH simultaneous transmission is applied, the HARQ-ACK is transmitted on PUCCH of the secondary cell and the periodic CSI is transmitted on PUSCH of another secondary cell of the second cell group.