RESTRICTING PDCP CONTROL PDUS ON SPECIFIC LINK

    公开(公告)号:US20200187050A1

    公开(公告)日:2020-06-11

    申请号:US16322196

    申请日:2017-09-28

    Abstract: A user equipment (UE) determines whether a size of data available for transmission in a PDCP (Packet Data Convergence Protocol) entity of the UE, excluding a size of a PDCP Control PDU (Protocol Data Unit), exceeds a threshold value. Here, the PDCP Control PDU is predetermined to be transmitted through the first link of the bearer. The PDCP entity of the UE informs an indication on (a) the size of the data available for transmission, or (b) the size of the PDCP Control PDU, to a first entity of the UE for the first link based on the determination, and the first entity can transmit a buffer status report to the network based on the indication. Here, the size of the data available for transmission in the PDCP includes the size of the PDCP Data PDU and the size of the PDCP Control PDU.

    Method for handling state variables of a PDCP entity in wireless communication system and a device therefor

    公开(公告)号:US10673773B2

    公开(公告)日:2020-06-02

    申请号:US16057104

    申请日:2018-08-07

    Abstract: The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for handling state variables of a PDCP entity in wireless communication system, the method comprising: delivering an PDCP SDU associated with a first COUNT to upper layer and starting, by the PDCP entity, a reordering timer, when an out-of-order PDCP PDU with the first COUNT value is received from lower layer; updating a value of a first state variable to the first COUNT value+1, when the reordering timer starts; and when the reordering timer expires, updating, by the PDCP entity, a value of a second state variable based on a second COUNT value of a first PDCP SDU which has not been delivered to upper layers, among PDCP SDUs with COUNT values which are equal to or larger than the first state variable.

    Method for triggering and reporting a buffer status and device therefor

    公开(公告)号:US10588048B2

    公开(公告)日:2020-03-10

    申请号:US15986277

    申请日:2018-05-22

    Abstract: A method for a user equipment (UE) operating in a wireless communication system including a first base station (BS) and a second BS, includes configuring a first medium access control (MAC) entity to map a first logical channel set transmitting first data to the first BS and a second MAC entity to map a second logical channel set transmitting second data to the second BS, wherein the first logical channel set includes one or more logical channels and the second logical channel set includes one or more logical channels, if the first data belongs to a logical channel having a higher priority than priorities of logical channels for which data is already available for transmission in the first logical channel set, triggering, by the first MAC entity, a first buffer status report to the first BS regardless of priorities of logical channels of the second logical channel set.

    Method for performing uplink packet measurements in a wireless communication system and a device therefor

    公开(公告)号:US10555195B2

    公开(公告)日:2020-02-04

    申请号:US15749394

    申请日:2016-07-19

    Abstract: The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for performing UL packet measurements in a wireless communication system, the method comprising: receiving a measurement configuration including a measurement period and a report unit from an eNB, performing an UL Packet Measurement per the report unit using the measurement period, and generating an UL Packet Measurement report including at least one ID of the report unit and at least one result of the UL Packet Measurement corresponding to the at least one ID of the report unit, and transmitting the UL Packet Measurement report to the eNB.

    Resource management in a wireless communication system

    公开(公告)号:US10524232B2

    公开(公告)日:2019-12-31

    申请号:US16123442

    申请日:2018-09-06

    Abstract: A method of performing, by a user equipment (UE), wireless communication using a serving cell in a wireless communication system is provided. The method includes: starting a deactivation timer associated with the serving cell, the deactivation timer relating to a duration of time after which the serving cell is deactivated; determining whether there is an uplink (UL) grant or a downlink (DL) assignment for the serving cell in a time unit; based on a determination that there is an UL grant or a DL assignment, determining whether a data unit is transmitted on the UL grant or is received on the DL assignment; based on a determination that the data unit is transmitted on the UL grant or is received on the DL assignment: restarting the deactivation timer associated with the serving cell; and transmitting the data unit on the UL grant or receiving the data unit on the DL assignment.

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