Lg Electronics Inc.

Yejee Lee

Youngdae Lee

Hongsuk Kim

Sunyoung Lee

Sangwon Kim

The present disclosure relates to mobility management wireless communications. According to an embodiment of the present disclosure, a method performed by a wireless device in a wireless communication system comprises: receiving, from a source cell, a handover command comprising a handover validity timer; performing a handover attempt to a target cell while the handover validity timer is running; and transmitting, to the source cell, a report message comprising cell information including target cell information for the target cell upon an expiration of the handover validity timer.

Method and apparatus for mobility management in wireless communication system

A method and apparatus for supporting a random access channel (RACH)-less mobility with pre-allocated beams in a wireless communication system is provided. A user equipment (UE) receives a mobility command message which includes information on a pre-allocated UL resource for UL transmission with pre-allocated beams, synchronizes to a target cell, and performs the UL transmission to the target cell via the pre-allocated beams based on the pre-allocated UL resource for UL transmission to transmit a mobility complete message via a UL grant. If the UL transmission fails, the UE may perform RACH procedure.

Method and apparatus for supporting RACH-less mobility with pre-allocated beams in wireless communication system

Provided are a method of estimating mobility state of UE and a device supporting the method. According to one embodiment of the present disclosure, the method includes: receiving information on neighbor cell from a serving cell, wherein the information informs to which group the neighbor cell belongs; performing cell change from the serving cell to the neighbor cell; when the neighbor cell belongs to a first group, counting the cell change; when the neighbor cell belongs to a second group, skipping counting the cell change; and reporting a number of counted cell change for estimating mobility state of the UE, wherein the first group and the second group are configured based on altitude of the UE.

Method for estimating mobility state of UE and device supporting the same

Provided are a method for performing, by a user equipment (UE), a role change between a primary cell and a secondary cell in a wireless communication system, and an apparatus supporting the same. The method may include: receiving a configuration and a condition for triggering the role change between the primary cell and the secondary cell; configuring a source cell as the primary cell and a target cell as the secondary cell; determining whether or not the condition is satisfied; and when it is determined that the condition is satisfied, configuring the target cell as the primary cell and the source cell as the secondary cell based on the configuration.

Method and apparatus for performing DC based handover

A method and apparatus for deprioritizing access on an unlicensed band based on user equipment (UE) preference in a wireless communication system is provided. A wireless device attempts to access a cell on an unlicensed frequency and starts a timer. When the timer expires, if the wireless device is a licensed preferred wireless device, the wireless device deprioritizes the unlicensed frequency. If the wireless device is an unlicensed preferred wireless device, the wireless device deprioritizes only the cell. The wireless device performs a cell reselection according to the de-prioritization.

Method and apparatus for deprioritizing access on unlicensed band based on UE preference in wireless communication system

A method and apparatus for performing an uplink (UL) transmission with pre-allocated beams in a wireless communication system is provided. A user equipment (UE) receives a connection release message from a network in a first state. The connection release message includes information on a pre-allocated UL resource for UL transmission with pre-allocated beams. The UE enters a second state from the first state, selects a cell, and performs the UL transmission to the cell in the second state via the pre-allocated beams based on the pre-configured UL resource for UL transmission when a data is available for transmission. The first state may be a radio resource control (RRC) connected state, and the second state may be an RRC inactive state and/or an RRC idle state.

Method and apparatus for performing uplink transmission with pre-allocated beams in wireless communication system

Provided are a method for monitoring paging. According to an embodiment of the present disclosure, the method includes calculating a first paging occasion (PO) based on identifier (ID) of the wireless device which belongs to a first group, monitoring the first PO based on a first frequency, receiving frequency pattern information on the first frequency, when a signal is not detected in the first PO, monitoring a second PO on a second frequency based on the frequency pattern information.

Monitoring a paging on an unlicensed band

A receiving system information method includes monitoring a first system information (SI) monitoring window based on a first frequency. Receiving frequency pattern information on the first frequency, when a signal is not detected in the first SI monitoring window. Monitoring a second SI monitoring window on a second frequency based on the frequency pattern information.

Monitoring system information on unlicensed band

Provided are a method of estimating mobility state of an UE and a device supporting the method. According to one embodiment of the present invention, the method includes: entering a second cell from a first cell, wherein the first cell provides specific information; receiving neighbor cell list from the second cell; and counting a number of cell changes for mobility state, based on whether the neighbor cell list from the second cell includes at least one of neighbor cells providing the specific information.

A method and apparatus for supporting a measurement reporting enhancement for an aerial device in a wireless communication system is provided. A prohibit timer can be used in order to prohibit frequent measurement reporting, and the prohibit timer may be stopped when a leaving condition for the measurement reporting is satisfied and/or a handover procedure and/or a radio resource control (RRC) connection re-establishment procedure is performed.

Method and apparatus for supporting measurement reporting enhancement for aerial device in wireless communication system

Provided are a method of measurement reporting and a device supporting the method. According to one embodiment of the present invention, the method includes: receiving a configuration of condition for measurement report; starting a first timer related to a first cell, when a report triggering event for the first cell is occurred; detecting a triggering event for a second cell and that the condition is satisfied; and reporting measurement results of the first cell and the second cell, when the first timer is expired or stopped.

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Seoul, South Korea

Yejee Lee