公开(公告)号：US20150208403A1

公开(公告)日：2015-07-23

申请号：US14420667

申请日：2013-08-08

Applicant: NTT DOCOMO, INC.

Inventor： Kazuaki Takeda ,  Yang Lu ,  Liu Liu ,  Lan Chen

IPC: H04W72/04

CPC classification number: H04W72/0413 ,  H04L1/00 ,  H04W72/042

Abstract: A user terminal carries out the steps of receiving downlink control information for a first cell and a second cell allocated to the PDCCH of the first cell, generating retransmission control signals for each downlink data signal in predetermined PUCCH formats, allocating the generated retransmission control signals to a PUCCH resource of the first cell, and sending feedback, and, when the ratio of DL subframes is higher in the second cell than in the first cell, applies PUCCH format 3 to a retransmission control signal for a downlink data signal of the second cell demodulated by using downlink control information in which the CCE number is equal to or lower than a predetermined value, and applies PUCCH format 1b to a retransmission control signal for a downlink data signal of the second cell demodulated by using downlink control information in which the CCE number is greater than the predetermined value.

Abstract translation: 用户终端执行接收分配给第一小区的PDCCH的第一小区和第二小区的下行链路控制信息的步骤，以预定的PUCCH格式生成每个下行链路数据信号的重发控制信号，将生成的重发控制信号分配给 第一小区的PUCCH资源，并发送反馈，并且当第二小区中的DL子帧的比率比在第一小区中高时，将PUCCH格式3应用于第二小区的下行链路数据信号的重发控制信号 通过使用CCE数等于或低于预定值的下行链路控制信息进行解调，并且将PUCCH格式1b应用于通过使用其中CCE的下行链路控制信息解调的第二小区的下行链路数据信号的重发控制信号 数大于预定值。

公开(公告)号：US20150146586A1

公开(公告)日：2015-05-28

申请号：US14399974

申请日：2013-05-09

Applicant: NTT DOCOMO, INC.

Inventor： Kazuaki Takeda ,  Yang Lu ,  Qin Mu ,  Liu Liu ,  Lan Chen

IPC: H04W72/04 ,  H04L5/14

CPC classification number: H04W72/0413 ,  H04L1/18 ,  H04L5/1469 ,  H04W72/042

Abstract: The present invention is designed to allow effective allocation of PUCCH resources, even when the ratio between uplink subframes and downlink subframes is changed in each cell, in CA by TDD. A user terminal communicates with a radio base station by means of TDD, in a communication band that is broadbanded by CA between a first cell and a second cell, and has a receiving section that receives downlink control information for the first cell and downlink control information for the second cell, allocated to a downlink control channel of the first cell, a retransmission control determining section that determines retransmission control for downlink signals transmitted from each cell, a transmitting section that feeds back retransmission control signals to the radio base station using the PUCCH of the first cell, and a resource selection section that selects the PUCCH resources to feed back the retransmission control signals, and, when the ratio of DL subframes is higher in the second cell than in the first cell, the resource selection section determines the PUCCH resources to allocate the retransmission control signals that correspond to the first cell and the second cell to, by different methods.

Abstract translation: 本发明被设计为即使当在每个小区中在TDD中，CA在每个小区中改变上行链路子帧和下行链路子帧之间的比率时，也能够有效地分配PUCCH资源。 用户终端在由第一小区和第二小区之间由CA宽带的通信频带中通过TDD与无线基站进行通信，并且具有：接收部，其接收第一小区的下行链路控制信息和下行链路控制信息 对于分配给第一小区的下行控制信道的第二小区，确定从各小区发送的下行链路信号的重发控制的重传控制决定部，使用PUCCH向无线基站反馈重发控制信号的发送部 以及资源选择部，其选择所述PUCCH资源来反馈所述重发控制信号，并且当所述第二小区中的所述DL子帧的比例高于所述第一小区时，所述资源选择部确定所述PUCCH 用于分配与第一小区和第二小区相对应的重发控制信号的资源， 通过不同的方法。

公开(公告)号：US09648598B2

公开(公告)日：2017-05-09

申请号：US14399974

申请日：2013-05-09

Applicant: NTT DOCOMO, INC.

Inventor： Kazuaki Takeda ,  Yang Lu ,  Qin Mu ,  Liu Liu ,  Lan Chen

IPC: H04W72/04 ,  H04L1/18 ,  H04L5/14

CPC classification number: H04W72/0413 ,  H04L1/18 ,  H04L5/1469 ,  H04W72/042

Abstract: The present invention is designed to allow effective allocation of PUCCH resources, even when the ratio between uplink subframes and downlink subframes is changed in each cell, in CA by TDD. A user terminal communicates with a radio base station by means of TDD, in a communication band that is broadbanded by CA between a first cell and a second cell, and has a receiving section that receives downlink control information for the first cell and downlink control information for the second cell, allocated to a downlink control channel of the first cell, a retransmission control determining section that determines retransmission control for downlink signals transmitted from each cell, a transmitting section that feeds back retransmission control signals to the radio base station using the PUCCH of the first cell, and a resource selection section that selects the PUCCH resources to feed back the retransmission control signals, and, when the ratio of DL subframes is higher in the second cell than in the first cell, the resource selection section determines the PUCCH resources to allocate the retransmission control signals that correspond to the first cell and the second cell to, by different methods.

公开(公告)号：US09345009B2

公开(公告)日：2016-05-17

申请号：US14420667

申请日：2013-08-08

Applicant: NTT DOCOMO, INC.

Inventor： Kazuaki Takeda ,  Yang Lu ,  Liu Liu ,  Lan Chen

IPC: H04W72/04 ,  H04L1/00

CPC classification number: H04W72/0413 ,  H04L1/00 ,  H04W72/042

Abstract: A user terminal carries out the steps of receiving downlink control information for a first cell and a second cell allocated to the PDCCH of the first cell, generating retransmission control signals for each downlink data signal in predetermined PUCCH formats, allocating the generated retransmission control signals to a PUCCH resource of the first cell, and sending feedback, and, when the ratio of DL subframes is higher in the second cell than in the first cell, applies PUCCH format 3 to a retransmission control signal for a downlink data signal of the second cell demodulated by using downlink control information in which the CCE number is equal to or lower than a predetermined value, and applies PUCCH format 1b to a retransmission control signal for a downlink data signal of the second cell demodulated by using downlink control information in which the CCE number is greater than the predetermined value.

Abstract translation: 用户终端执行接收分配给第一小区的PDCCH的第一小区和第二小区的下行链路控制信息的步骤，以预定的PUCCH格式生成每个下行链路数据信号的重发控制信号，将生成的重发控制信号分配给 第一小区的PUCCH资源，并发送反馈，并且当第二小区中的DL子帧的比率比在第一小区中高时，将PUCCH格式3应用于第二小区的下行链路数据信号的重发控制信号 通过使用CCE数等于或低于预定值的下行链路控制信息进行解调，并且将PUCCH格式1b应用于通过使用其中CCE的下行链路控制信息解调的第二小区的下行链路数据信号的重发控制信号 数大于预定值。