METHOD FOR INITIATING A RANDOM ACCESS PROCEDURE IN A CARRIER AGGREGATION SYSTEM AND A DEVICE THEREFOR

    公开(公告)号:US20180054834A1

    公开(公告)日:2018-02-22

    申请号:US15542857

    申请日:2016-01-21

    Abstract: The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for initiating a random access procedure in a carrier aggregation system, the method comprising: receiving, from a network, a Radio Resource Control (RRC) signal which configures a Physical Uplink Control Channel (PUCCH) resource for an cell in a Timing Advance Group (TAG); initiating a dedicated random access procedure on the cell with the PUCCH resource to be configured by the RRC signal if the RRC signal includes a dedicated random access preamble information for the cell.

    METHOD FOR TRANSMITTING DATA IN A COMMUNICATION SYSTEM AND DEVICE THEREFOR

    公开(公告)号:US20180014313A1

    公开(公告)日:2018-01-11

    申请号:US15642048

    申请日:2017-07-05

    CPC classification number: H04W72/10 H04W72/14 H04W76/25

    Abstract: The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for transmitting, by a user equipment (UE), data in a wireless communication system, the method comprising: configuring multiple radio bearer groups (RBGs), each of the multiple RBGs including one or more radio bearers; receiving an uplink grant; selecting a RBG according to a predetermined rule; generating a Medium Access Control Protocol Data Unit (MAC PDU) containing a data of the selected RBG; and transmitting the MAC PDU using the uplink grant, wherein the predetermined rule is at least one of: selecting a RBG having a logical channel with the highest logical channel priority, selecting a RBG having a largest amount of data stored in a PDCP or RLC buffer, or selecting a RBG having a radio bearer with a shortest delay requirement.

    METHOD FOR TRANSMITTING MULTIPLEXED HARQ FEEDBACKS IN A CARRIER AGGREGATION SYSTEM AND A DEVICE THEREFOR

    公开(公告)号:US20180013519A1

    公开(公告)日:2018-01-11

    申请号:US15538060

    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 transmitting multiplexed HARQ feedbacks in a carrier aggregation system, the method comprising: configuring a first Physical Uplink Control Channel (PUCCH) group and a second PUCCH group, sources in each of the first PUCCH group and the second PUCCH group; generating a first Hybrid-ARQ (HARQ) feedback by multiplexing HARQ feedbacks of all HARQ processes of all cells belonging to the first PUCCH group; generating a second HARQ feedback by multiplexing HARQ feedbacks of all HARQ processes of all cells belonging to the second PUCCH group; selecting a first cell among the at least two cells with PUCCH resources in the first PUCCH group; selecting a second cell among the at least two cells with PUCCH resources in the second PUCCH group; and transmitting the first HARQ feedback on the first cell and the second HARQ feedback on the second cell.

    METHOD FOR INDICATING A CIPHERING INDICATION FOR A SIDELINK RADIO BEARER IN A D2D COMMUNICATION SYSTEM AND DEVICE THEREFOR

    公开(公告)号:US20170374699A1

    公开(公告)日:2017-12-28

    申请号:US15684146

    申请日:2017-08-23

    CPC classification number: H04W76/14 H04W12/02 H04W92/18

    Abstract: The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for indicating a ciphering indication for a sidelink radio bearer in a D2D communication system, the method comprising: receiving a PDCP SDU when the UE is configured to communicate with one or more other UEs directly; deciding whether to apply ciphering or not for the received PDCP SDU; generating a PDCP data PDU including the received PDCP SDU and a PDCP PDU header including one or more fields for ciphering parameters; and transmitting the PDCP data PDU to the one or more other UEs over PC5 interface, wherein at least one of the one or more fields for ciphering parameters is set to a fixed value when the ciphering is not applied for the received PDCP SDU.

Patent Agency Ranking