HARQ operation when TDD cell and FDD cell are included in carrier aggregation

    公开(公告)号:US10250374B2

    公开(公告)日:2019-04-02

    申请号:US15026771

    申请日:2014-09-01

    Abstract: One disclosure of the present specification provides a method for operating a HARQ from user equipment (UE). The method comprises the steps of: the UE receiving downlink data from each cell, when at least one TDD-based cell and at least one FDD based cell are established according to carrier aggregation (CA), a specific TDD-based cell is established as a primary cell of the carrier aggregation (CA), and the at least one FDD-based cell is established as a secondary cell of the carrier aggregation (CA); the UE confirming a PUCCH format to be used for transmitting a HARQ ACK/NACK for the downlink data; and the UE determining the number of bits for transmitting the HARQ ACK/NACK when use of the specific PUCCH format for transmitting the HARQ ACK/NACK is confirmed.

    METHOD FOR RECEIVING DOWNLINK CONTROL CHANNEL BY MTC DEVICE, AND TERMINAL

    公开(公告)号:US20190090248A1

    公开(公告)日:2019-03-21

    申请号:US16195298

    申请日:2018-11-19

    Abstract: An embodiment of the present specification provides a method for receiving a downlink control channel by a machine type communication (MTC) device. The method comprises: a step of receiving, by the downlink control channel, setting information about the maximum number of physical resource blocks (PRBs) which can be transmitted by a base station; a step of receiving, by the MTC device, setting information about a set of control channel monitoring PRBs which should monitor the downlink control channel; and a step of monitoring the downlink control channel on the PRBs according to the setting information about the set of control channel monitoring PRBs, wherein if the number of sets of control channel monitoring PRBs exceeds the maximum number of PRBs, the downlink control channel may be monitored only on the sets of PRBs equal to or less than the maximum number of PRBs.

    Connectivity supporting method for D2D communication and wireless device

    公开(公告)号:US10187769B2

    公开(公告)日:2019-01-22

    申请号:US15536116

    申请日:2015-12-24

    Abstract: A disclosure of the present specification provides a method for supporting connectivity of device-to-device (D2D) communication between a first wireless device and a second wireless device. The method may comprise the steps of: receiving, by a third wireless device, information on a resource pool which can be used for D2D communication, from a base station; transmitting, by the third wireless device, information on a resource which can be used for D2D communication between the first wireless device and the second wireless device to the first wireless device and the second wireless device, on the basis of the received information; and performing, by the third wireless device, a procedure for providing necessary data to the second wireless device when the disconnection of the D2D communication link between the first wireless device and the second wireless device is detected.

    Method for transmitting, to MTC device, PDSCH including downlink data, and base station therefor

    公开(公告)号:US10159090B2

    公开(公告)日:2018-12-18

    申请号:US15027223

    申请日:2014-10-07

    Abstract: One embodiment of the present specification provides a method for transmitting, to a machine type communication (MTC) device, a physical downlink shared channel (PDSCH) including downlink data. The method can comprise the steps of: mapping the PDSCH on a resource element (RE) of a first subframe among a plurality of subframes and transmitting the same, when a base station performs PDSCH bundle transmission for repeatedly transmitting the same PDSCH to the MTC device on the plurality of subframes; and mapping, by the base station, the PDSCH on an RE of a second subframe among the plurality of subframes with respect to the RE of the first subframe, on which the PDSCH is mapped, to enable the MTC device to decode a bundle of the PDSCHs through the combination of RE units, and transmitting the same.

    Method and apparatus for transmitting control information in wireless communication system

    公开(公告)号:US10110365B2

    公开(公告)日:2018-10-23

    申请号:US15124658

    申请日:2015-03-25

    Abstract: The present invention relates to a wireless communication system. Specifically, the present invention relates to a method for transmitting, by a terminal, control information in an FDD cell, and an apparatus therefor, the method comprising the steps of: receiving sub-frame reconfiguration information for a UL CC; receiving, on the FDD cell, a PDCCH including DCI; receiving, on the FDD cell, a PDSCH indicated by the PDCCH; and transmitting, in sub-frame n on the UL CC, HARQ-ACK information on the PDSCH, wherein the index of a PUCCH resource used in transmitting the HARQ-ACK information is determined by n(1)PUCCH=nCCE+N(1)PUCCH or n(1)PUCCH=nCCE+N(1)PUCCH+offset.

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