CARRIER RESELECTION UNDER BACKOFF MECHANISIM OF RANDOM ACCESS PROCEDURE

    公开(公告)号:US20180092131A1

    公开(公告)日:2018-03-29

    申请号:US15717208

    申请日:2017-09-27

    Abstract: A method and apparatus for a user equipment (UE) performing a random access to a network are disclosed. For this end, the UE selects a first carrier for the random access among multiple carriers, and transmits a first random access preamble for a first random access procedure via the first carrier to the network. Then, the UE applies backoff time to the first carrier and reselects a second carrier for the first random access procedure among the multiple carriers, when the first random access procedure is determined as not successful; and transmits a second random access preamble via the second carrier to the network. Here, reselecting the second carrier is performed before the backoff time applied to the first carrier ends.

    METHOD FOR SELECTING PUCCH TRANSMISSION IN A CARRIER AGGREGATION SYSTEM AND A DEVICE THEREFOR

    公开(公告)号:US20170366306A1

    公开(公告)日:2017-12-21

    申请号:US15538636

    申请日:2016-01-13

    Abstract: The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for selecting PUCCH transmission at power limitation situation in a carrier aggregation system, the method comprising: configuring multiple Physical Uplink Control Channels (PUCCHs) for the UE; generating multiple uplink control information, wherein each of the multiple uplink control information is to be transmitted via corresponding PUCCH to the eNB at a same time; selecting one of multiple PUCCHs configured for the UE if the UE is not able to transmit the multiple uplink control information on the multiple PUCCHs at the same time; and transmitting corresponding uplink control information on the selected PUCCH to the eNB.

    METHOD AND USER EQUIPMENT FOR RECEIVING DOWNLINK CONTROL INFORMATION

    公开(公告)号:US20170339682A1

    公开(公告)日:2017-11-23

    申请号:US15603308

    申请日:2017-05-23

    Abstract: A user equipment (UE) receives receiving discontinuous reception (DRX) configuration information including information indicating subframes for the start of an on-duration timer and a value of the on-duration timer. The UE starts the on-duration timer in a subframe n based on the DRX configuration information if a hybrid automatic repeat request (HARQ) round trip time (RTT) timer is not running. The UE monitors a physical downlink control channel (PDCCH) to receive downlink control information while the on-duration timer is running.

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