Abstract:
The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for performing establishing/releasing a MAC entity in the wireless communication system, the method comprising: communicating with a first base station (BS) on a first type cell, wherein the UE has a first MAC entity for the first type cell; establishing a second MAC entity for a second type cell, when the UE starts to communicate with a second BS while maintaining communication with the first BS; and releasing the second MAC entity for the second type cell, when the UE stops to communicate with a second BS while maintaining communication with the first BS.
Abstract:
Provided is a method for reporting mobility information by means of a terminal in a wireless communication system. The method includes generating mobility information and reporting the mobility information via a network. The mobility information includes mobility state information indicating the estimated mobility state of the terminal, and mobility history information relating to the mobility history of the terminal.
Abstract:
The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for calculating and reporting a buffer status in the wireless communication system, the method comprising: receiving a Packet Data Convergence Protocol (PDCP) data transmission ratio and an offset value; calculating a first buffer status for the first BS and a second buffer status for the second BS based on the PDCP data transmission ratio; starting a timer for the first BS when the calculated first buffer status is reported to the first BS; checking whether an uplink (UL) grant is received from the first BS when the timer for the first BS expires; and updating the PDCP data transmission ratio using the offset value if the UL grant is not received from the first BS; and re-calculating the first buffer status for the first BS and the second buffer status for the second BS based on the updated PDCP data transmission ratio.
Abstract:
There is provided a method for adjusting a transmission power. The method may comprise: classifying, by a user equipment (UE), a plurality of cells into groups, each of which includes one or more cells belonging to the same base station; determining, by the UE, a transmission power for each group; and adjusting, by the UE, the determined transmission power for each group such that a summation of transmission powers for cells included in each group is less than or equal to a maximum transmission power configured for each group.
Abstract:
The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for triggering a buffer status reporting in the wireless communication system, the method comprising: calculating an amount of first DAT when the first data is arrived in a protocol entity, wherein the amount of first DAT is less than a threshold; calculating an amount of second DAT when the second data is arrived in the protocol entity, wherein the second data is arrived after the first data is arrived in the protocol entity; and triggering a buffer status report if the amount of second DAT is more than the threshold.
Abstract:
The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for power headroom reporting in the wireless communication system, the method comprising: obtaining information related to a power headroom (PH) for the second BS; obtaining PH of activated cells of the UE; and transmitting, to a first BS, the information related to the PH for the second BS and the PH of activated cells of the UE.
Abstract:
The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for processing a PDCP reordering function in a dual connectivity system, the method comprising: generating a MAC PDU (Medium Access Control Protocol Data Unit) if both of a PHR (Power Headroom Reporting) and a sidelink BSR (Buffer Status Reporting) are generated while the UE communicates with other UEs directly using a sidelink; and transmitting the MAC PDU, wherein the PHR is prioritized over the sidelink BSR when the UE prioritizes between the PHR and the sidelink BSR in the generated MAC PDU.
Abstract:
The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for monitoring On Durations in the wireless communication system, the method comprising: receiving DRX information and indicator for selecting On Durations to be used for the UE; calculating one or more first On Durations in a DRX cycle based on the DRX information; and monitoring one or more second On Durations among the one or more first On Durations based on the indicator, wherein each On Duration comprises one or more subframes.
Abstract:
The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for monitoring paging occasions in the wireless communication system, the method comprising: receiving paging information and an indicator for selecting paging occasions (POs) to be used for the UE; calculating one or more first POs in a paging frame based on the paging information; and monitoring one or more second POs among the one or more first POs based on the indicator.
Abstract:
The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for processing a PDCP reordering function in a dual connectivity system, the method comprising: performing a PDCP (Packet Data Convergence Protocol) reordering function using a reordering timer; receiving an RRC (Radio Resource Control) reconfiguration message indicating a PDCP entity is to be associated with one RLC entity; and disabling the PDCP reordering function immediately by resetting the reordering timer if the PDCP entity is re-established according to the RRC reconfiguration message.